muen/linux.git
3 years agoMerge remote-tracking branches 'spi/topic/jcore', 'spi/topic/kconfig', 'spi/topic...
Mark Brown [Mon, 2 Apr 2018 14:56:39 +0000 (15:56 +0100)]
Merge remote-tracking branches 'spi/topic/jcore', 'spi/topic/kconfig', 'spi/topic/orion', 'spi/topic/pxa2xx' and 'spi/topic/rspi' into spi-next

3 years agoMerge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm-qspi', 'spi/topic...
Mark Brown [Mon, 2 Apr 2018 14:56:34 +0000 (15:56 +0100)]
Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm-qspi', 'spi/topic/bcm2835aux', 'spi/topic/dw' and 'spi/topic/gpio' into spi-next

3 years agoMerge remote-tracking branch 'spi/topic/samsung' into spi-next
Mark Brown [Mon, 2 Apr 2018 14:56:32 +0000 (15:56 +0100)]
Merge remote-tracking branch 'spi/topic/samsung' into spi-next

3 years agoMerge remote-tracking branches 'spi/fix/atmel', 'spi/fix/pxa2xx' and 'spi/fix/unregis...
Mark Brown [Mon, 2 Apr 2018 14:56:24 +0000 (15:56 +0100)]
Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/pxa2xx' and 'spi/fix/unregiser' into spi-linus

3 years agoMerge remote-tracking branch 'spi/fix/dma' into spi-linus
Mark Brown [Mon, 2 Apr 2018 14:56:20 +0000 (15:56 +0100)]
Merge remote-tracking branch 'spi/fix/dma' into spi-linus

3 years agoMAINTAINERS: update Andi's e-mail
Andi Shyti [Wed, 28 Mar 2018 09:31:02 +0000 (18:31 +0900)]
MAINTAINERS: update Andi's e-mail

Because I will be leaving Samsung soon, update my e-mail address
to andi@etezian.org

For reachability update also mailcap.

CC: Krzysztof Kozlowski <krzk@kernel.org>
CC: Kukjin Kim <kgene@kernel.org>
CC: linux-samsung-soc@vger.kernel.org
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
3 years agoLinux 4.16 v4.16
Linus Torvalds [Sun, 1 Apr 2018 21:20:27 +0000 (14:20 -0700)]
Linux 4.16

3 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 31 Mar 2018 17:59:00 +0000 (07:59 -1000)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Two fixlets"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/hwbp: Simplify the perf-hwbp code, fix documentation
  perf/x86/intel: Fix linear IP of PEBS real_ip on Haswell and later CPUs

3 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 31 Mar 2018 17:50:30 +0000 (07:50 -1000)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Two UV platform fixes, and a kbuild fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform/UV: Fix critical UV MMR address error
  x86/platform/uv/BAU: Add APIC idt entry
  x86/purgatory: Avoid creating stray .<pid>.d files, remove -MD from KBUILD_CFLAGS

3 years agoMerge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 31 Mar 2018 17:26:48 +0000 (07:26 -1000)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 PTI fixes from Ingo Molnar:
 "Two fixes: a relatively simple objtool fix that makes Clang built
  kernels work with ORC debug info, plus an alternatives macro fix"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/alternatives: Fixup alternative_call_2
  objtool: Add Clang support

3 years agoMerge tag 'kbuild-fixes-v4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 31 Mar 2018 04:53:57 +0000 (18:53 -1000)]
Merge tag 'kbuild-fixes-v4.16-3' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - fix missed rebuild of TRIM_UNUSED_KSYMS

 - fix rpm-pkg for GNU tar >= 1.29

 - include scripts/dtc/include-prefixes/* to kernel header deb-pkg

 - add -no-integrated-as option ealier to fix building with Clang

 - fix netfilter Makefile for parallel building

* tag 'kbuild-fixes-v4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  netfilter: nf_nat_snmp_basic: add correct dependency to Makefile
  kbuild: rpm-pkg: Support GNU tar >= 1.29
  builddeb: Fix header package regarding dtc source links
  kbuild: set no-integrated-as before incl. arch Makefile
  kbuild: make scripts/adjust_autoksyms.sh robust against timestamp races

3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 31 Mar 2018 04:47:28 +0000 (18:47 -1000)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix RCU locking in xfrm_local_error(), from Taehee Yoo.

 2) Fix return value assignments and thus error checking in
    iwl_mvm_start_ap_ibss(), from Johannes Berg.

 3) Don't count header length twice in vti4, from Stefano Brivio.

 4) Fix deadlock in rt6_age_examine_exception, from Eric Dumazet.

 5) Fix out-of-bounds access in nf_sk_lookup_slow{v4,v6}() from Subash
    Abhinov.

 6) Check nladdr size in netlink_connect(), from Alexander Potapenko.

 7) VF representor SQ numbers are 32 not 16 bits, in mlx5 driver, from
    Or Gerlitz.

 8) Out of bounds read in skb_network_protocol(), from Eric Dumazet.

 9) r8169 driver sets driver data pointer after register_netdev() which
    is too late. Fix from Heiner Kallweit.

10) Fix memory leak in mlx4 driver, from Moshe Shemesh.

11) The multi-VLAN decap fix added a regression when dealing with device
    that lack a MAC header, such as tun. Fix from Toshiaki Makita.

12) Fix integer overflow in dynamic interrupt coalescing code. From Tal
    Gilboa.

13) Use after free in vrf code, from David Ahern.

14) IPV6 route leak between VRFs fix, also from David Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (81 commits)
  net: mvneta: fix enable of all initialized RXQs
  net/ipv6: Fix route leaking between VRFs
  vrf: Fix use after free and double free in vrf_finish_output
  ipv6: sr: fix seg6 encap performances with TSO enabled
  net/dim: Fix int overflow
  vlan: Fix vlan insertion for packets without ethernet header
  net: Fix untag for vlan packets without ethernet header
  atm: iphase: fix spelling mistake: "Receiverd" -> "Received"
  vhost: validate log when IOTLB is enabled
  qede: Do not drop rx-checksum invalidated packets.
  hv_netvsc: enable multicast if necessary
  ip_tunnel: Resolve ipsec merge conflict properly.
  lan78xx: Crash in lan78xx_writ_reg (Workqueue: events lan78xx_deferred_multicast_write)
  qede: Fix barrier usage after tx doorbell write.
  vhost: correctly remove wait queue during poll failure
  net/mlx4_core: Fix memory leak while delete slave's resources
  net/mlx4_en: Fix mixed PFC and Global pause user control requests
  net/smc: use announced length in sock_recvmsg()
  llc: properly handle dev_queue_xmit() return value
  strparser: Fix sign of err codes
  ...

3 years agonet: mvneta: fix enable of all initialized RXQs
Yelena Krivosheev [Fri, 30 Mar 2018 10:05:31 +0000 (12:05 +0200)]
net: mvneta: fix enable of all initialized RXQs

In mvneta_port_up() we enable relevant RX and TX port queues by write
queues bit map to an appropriate register.

q_map must be ZERO in the beginning of this process.

Signed-off-by: Yelena Krivosheev <yelena@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/ipv6: Fix route leaking between VRFs
David Ahern [Fri, 30 Mar 2018 00:44:57 +0000 (17:44 -0700)]
net/ipv6: Fix route leaking between VRFs

Donald reported that IPv6 route leaking between VRFs is not working.
The root cause is the strict argument in the call to rt6_lookup when
validating the nexthop spec.

ip6_route_check_nh validates the gateway and device (if given) of a
route spec. It in turn could call rt6_lookup (e.g., lookup in a given
table did not succeed so it falls back to a full lookup) and if so
sets the strict argument to 1. That means if the egress device is given,
the route lookup needs to return a result with the same device. This
strict requirement does not work with VRFs (IPv4 or IPv6) because the
oif in the flow struct is overridden with the index of the VRF device
to trigger a match on the l3mdev rule and force the lookup to its table.

The right long term solution is to add an l3mdev index to the flow
struct such that the oif is not overridden. That solution will not
backport well, so this patch aims for a simpler solution to relax the
strict argument if the route spec device is an l3mdev slave. As done
in other places, use the FLOWI_FLAG_SKIP_NH_OIF to know that the
RT6_LOOKUP_F_IFACE flag needs to be removed.

Fixes: ca254490c8df ("net: Add VRF support to IPv6 stack")
Reported-by: Donald Sharp <sharpd@cumulusnetworks.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agovrf: Fix use after free and double free in vrf_finish_output
David Ahern [Thu, 29 Mar 2018 19:49:52 +0000 (12:49 -0700)]
vrf: Fix use after free and double free in vrf_finish_output

Miguel reported an skb use after free / double free in vrf_finish_output
when neigh_output returns an error. The vrf driver should return after
the call to neigh_output as it takes over the skb on error path as well.

Patch is a simplified version of Miguel's patch which was written for 4.9,
and updated to top of tree.

Fixes: 8f58336d3f78a ("net: Add ethernet header for pass through VRF device")
Signed-off-by: Miguel Fadon Perlines <mfadon@teldat.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoipv6: sr: fix seg6 encap performances with TSO enabled
David Lebrun [Thu, 29 Mar 2018 16:59:36 +0000 (17:59 +0100)]
ipv6: sr: fix seg6 encap performances with TSO enabled

Enabling TSO can lead to abysmal performances when using seg6 in
encap mode, such as with the ixgbe driver. This patch adds a call to
iptunnel_handle_offloads() to remove the encapsulation bit if needed.

Before:
root@comp4-seg6bpf:~# iperf3 -c fc00::55
Connecting to host fc00::55, port 5201
[  4] local fc45::4 port 36592 connected to fc00::55 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   196 KBytes  1.60 Mbits/sec   47   6.66 KBytes
[  4]   1.00-2.00   sec   304 KBytes  2.49 Mbits/sec  100   5.33 KBytes
[  4]   2.00-3.00   sec   284 KBytes  2.32 Mbits/sec   92   5.33 KBytes

After:
root@comp4-seg6bpf:~# iperf3 -c fc00::55
Connecting to host fc00::55, port 5201
[  4] local fc45::4 port 43062 connected to fc00::55 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  1.03 GBytes  8.89 Gbits/sec    0    743 KBytes
[  4]   1.00-2.00   sec  1.03 GBytes  8.87 Gbits/sec    0    743 KBytes
[  4]   2.00-3.00   sec  1.03 GBytes  8.87 Gbits/sec    0    743 KBytes

Reported-by: Tom Herbert <tom@quantonium.net>
Fixes: 6c8702c60b88 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels")
Signed-off-by: David Lebrun <dlebrun@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'ceph-for-4.16-rc8' of git://github.com/ceph/ceph-client
Linus Torvalds [Fri, 30 Mar 2018 17:29:47 +0000 (07:29 -1000)]
Merge tag 'ceph-for-4.16-rc8' of git://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A fix for a dio-enabled loop on ceph deadlock from Zheng, marked for
  stable"

* tag 'ceph-for-4.16-rc8' of git://github.com/ceph/ceph-client:
  ceph: only dirty ITER_IOVEC pages for direct read

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 30 Mar 2018 17:24:14 +0000 (07:24 -1000)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "PPC:
   - Fix a bug causing occasional machine check exceptions on POWER8
     hosts (introduced in 4.16-rc1)

  x86:
   - Fix a guest crashing regression with nested VMX and restricted
     guest (introduced in 4.16-rc1)

   - Fix dependency check for pv tlb flush (the wrong dependency that
     effectively disabled the feature was added in 4.16-rc4, the
     original feature in 4.16-rc1, so it got decent testing)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Fix pv tlb flush dependencies
  KVM: nVMX: sync vmcs02 segment regs prior to vmx_set_cr0
  KVM: PPC: Book3S HV: Fix duplication of host SLB entries

3 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 30 Mar 2018 17:14:35 +0000 (07:14 -1000)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fix from Wolfram Sang:
 "A simple but worthwhile I2C driver fix for 4.16"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i2c-stm32f7: fix no check on returned setup

3 years agoMerge tag 'sound-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 30 Mar 2018 17:11:14 +0000 (07:11 -1000)]
Merge tag 'sound-4.16' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Very small fixes (all one-liners) at this time.

  One fix is for a PCM core stuff to correct the mmap behavior on
  non-x86. It doesn't show on most machines but mostly only for exotic
  non-interleaved formats"

* tag 'sound-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: pcm: potential uninitialized return values
  ALSA: pcm: Use dma_bytes as size parameter in dma_mmap_coherent()
  ALSA: usb-audio: Add native DSD support for TEAC UD-301

3 years agonet/dim: Fix int overflow
Tal Gilboa [Thu, 29 Mar 2018 10:53:52 +0000 (13:53 +0300)]
net/dim: Fix int overflow

When calculating difference between samples, the values
are multiplied by 100. Large values may cause int overflow
when multiplied (usually on first iteration).
Fixed by forcing 100 to be of type unsigned long.

Fixes: 4c4dbb4a7363 ("net/mlx5e: Move dynamic interrupt coalescing code to include/linux")
Signed-off-by: Tal Gilboa <talgi@mellanox.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'vlan-fix'
David S. Miller [Fri, 30 Mar 2018 16:36:28 +0000 (12:36 -0400)]
Merge branch 'vlan-fix'

Toshiaki Makita says:

====================
Fix vlan tag handling for vlan packets without ethernet headers

Eric Dumazet reported syzbot found a new bug which leads to underflow of
size argument of memmove(), causing crash[1]. This can be triggered by tun
devices.

The underflow happened because skb_vlan_untag() did not expect vlan packets
without ethernet headers, and tun can produce such packets.
I also checked vlan_insert_inner_tag() and found a similar bug.

This series fixes these problems.

[1] https://marc.info/?l=linux-netdev&m=152221753920510&w=2
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agovlan: Fix vlan insertion for packets without ethernet header
Toshiaki Makita [Thu, 29 Mar 2018 10:05:30 +0000 (19:05 +0900)]
vlan: Fix vlan insertion for packets without ethernet header

In some situation vlan packets do not have ethernet headers. One example
is packets from tun devices. Users can specify vlan protocol in tun_pi
field instead of IP protocol. When we have a vlan device with reorder_hdr
disabled on top of the tun device, such packets from tun devices are
untagged in skb_vlan_untag() and vlan headers will be inserted back in
vlan_insert_inner_tag().

vlan_insert_inner_tag() however did not expect packets without ethernet
headers, so in such a case size argument for memmove() underflowed.

We don't need to copy headers for packets which do not have preceding
headers of vlan headers, so skip memmove() in that case.
Also don't write vlan protocol in skb->data when it does not have enough
room for it.

Fixes: cbe7128c4b92 ("vlan: Fix out of order vlan headers with reorder header off")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: Fix untag for vlan packets without ethernet header
Toshiaki Makita [Thu, 29 Mar 2018 10:05:29 +0000 (19:05 +0900)]
net: Fix untag for vlan packets without ethernet header

In some situation vlan packets do not have ethernet headers. One example
is packets from tun devices. Users can specify vlan protocol in tun_pi
field instead of IP protocol, and skb_vlan_untag() attempts to untag such
packets.

skb_vlan_untag() (more precisely, skb_reorder_vlan_header() called by it)
however did not expect packets without ethernet headers, so in such a case
size argument for memmove() underflowed and triggered crash.

====
BUG: unable to handle kernel paging request at ffff8801cccb8000
IP: __memmove+0x24/0x1a0 arch/x86/lib/memmove_64.S:43
PGD 9cee067 P4D 9cee067 PUD 1d9401063 PMD 1cccb7063 PTE 2810100028101
Oops: 000b [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 17663 Comm: syz-executor2 Not tainted 4.16.0-rc7+ #368
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__memmove+0x24/0x1a0 arch/x86/lib/memmove_64.S:43
RSP: 0018:ffff8801cc046e28 EFLAGS: 00010287
RAX: ffff8801ccc244c4 RBX: fffffffffffffffe RCX: fffffffffff6c4c2
RDX: fffffffffffffffe RSI: ffff8801cccb7ffc RDI: ffff8801cccb8000
RBP: ffff8801cc046e48 R08: ffff8801ccc244be R09: ffffed0039984899
R10: 0000000000000001 R11: ffffed0039984898 R12: ffff8801ccc244c4
R13: ffff8801ccc244c0 R14: ffff8801d96b7c06 R15: ffff8801d96b7b40
FS:  00007febd562d700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801cccb8000 CR3: 00000001ccb2f006 CR4: 00000000001606e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 memmove include/linux/string.h:360 [inline]
 skb_reorder_vlan_header net/core/skbuff.c:5031 [inline]
 skb_vlan_untag+0x470/0xc40 net/core/skbuff.c:5061
 __netif_receive_skb_core+0x119c/0x3460 net/core/dev.c:4460
 __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4627
 netif_receive_skb_internal+0x10b/0x670 net/core/dev.c:4701
 netif_receive_skb+0xae/0x390 net/core/dev.c:4725
 tun_rx_batched.isra.50+0x5ee/0x870 drivers/net/tun.c:1555
 tun_get_user+0x299e/0x3c20 drivers/net/tun.c:1962
 tun_chr_write_iter+0xb9/0x160 drivers/net/tun.c:1990
 call_write_iter include/linux/fs.h:1782 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x454879
RSP: 002b:00007febd562cc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007febd562d6d4 RCX: 0000000000454879
RDX: 0000000000000157 RSI: 0000000020000180 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000006b0 R14: 00000000006fc120 R15: 0000000000000000
Code: 90 90 90 90 90 90 90 48 89 f8 48 83 fa 20 0f 82 03 01 00 00 48 39 fe 7d 0f 49 89 f0 49 01 d0 49 39 f8 0f 8f 9f 00 00 00 48 89 d1 <f3> a4 c3 48 81 fa a8 02 00 00 72 05 40 38 fe 74 3b 48 83 ea 20
RIP: __memmove+0x24/0x1a0 arch/x86/lib/memmove_64.S:43 RSP: ffff8801cc046e28
CR2: ffff8801cccb8000
====

We don't need to copy headers for packets which do not have preceding
headers of vlan headers, so skip memmove() in that case.

Fixes: 4bbb3e0e8239 ("net: Fix vlan untag for bridge and vlan_dev with reorder_hdr off")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoatm: iphase: fix spelling mistake: "Receiverd" -> "Received"
Colin Ian King [Wed, 28 Mar 2018 23:18:53 +0000 (00:18 +0100)]
atm: iphase: fix spelling mistake: "Receiverd" -> "Received"

Trivial fix to spelling mistake in message text

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoceph: only dirty ITER_IOVEC pages for direct read
Yan, Zheng [Fri, 16 Mar 2018 03:22:29 +0000 (11:22 +0800)]
ceph: only dirty ITER_IOVEC pages for direct read

If a page is already locked, attempting to dirty it leads to a deadlock
in lock_page().  This is what currently happens to ITER_BVEC pages when
a dio-enabled loop device is backed by ceph:

  $ losetup --direct-io /dev/loop0 /mnt/cephfs/img
  $ xfs_io -c 'pread 0 4k' /dev/loop0

Follow other file systems and only dirty ITER_IOVEC pages.

Cc: stable@kernel.org
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
3 years agoMerge tag 'for-4.16/dm-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 30 Mar 2018 05:27:12 +0000 (19:27 -1000)]
Merge tag 'for-4.16/dm-fixes-4' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix a DM multipath regression introduced in a v4.16-rc6 commit:
   restore support for loading, and attaching, scsi_dh modules during
   multipath table load. Otherwise some users may find themselves unable
   to boot, as was reported today:

     https://marc.info/?l=linux-scsi&m=152231276114962&w=2

 - Fix a DM core ioctl permission check regression introduced in a
   v4.16-rc5 commit.

* tag 'for-4.16/dm-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: fix dropped return code from dm_get_bdev_for_ioctl
  dm mpath: fix support for loading scsi_dh modules during table load

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Fri, 30 Mar 2018 05:23:24 +0000 (19:23 -1000)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "It has been fairly silent lately on our -rc front. Big queue of
  patches on the mailing list going to for-next though.

  Bug fixes:
   - qedr driver bugfixes causing application hangs, wrong uapi errnos,
     and a race condition
   - three syzkaller found bugfixes in the ucma uapi

  Regression fixes for things introduced in 4.16:
   - Crash on error introduced in mlx5 UMR flow
   - Crash on module unload/etc introduced by bad interaction of
     restrack and mlx5 patches this cycle
   - Typo in a two line syzkaller bugfix causing a bad regression
   - Coverity report of nonsense code in hns driver"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/ucma: Introduce safer rdma_addr_size() variants
  RDMA/hns: ensure for-loop actually iterates and free's buffers
  RDMA/ucma: Check that device exists prior to accessing it
  RDMA/ucma: Check that device is connected prior to access it
  RDMA/rdma_cm: Fix use after free race with process_one_req
  RDMA/qedr: Fix QP state initialization race
  RDMA/qedr: Fix rc initialization on CNQ allocation failure
  RDMA/qedr: fix QP's ack timeout configuration
  RDMA/ucma: Correct option size check using optlen
  RDMA/restrack: Move restrack_clean to be symmetrical to restrack_init
  IB/mlx5: Don't clean uninitialized UMR resources

3 years agoMerge tag 'mtd/fixes-for-4.16' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 30 Mar 2018 05:21:29 +0000 (19:21 -1000)]
Merge tag 'mtd/fixes-for-4.16' of git://git.infradead.org/linux-mtd

Pull MTD fixes from Boris Brezillon:
 "Two fixes, one in the atmel NAND driver and another one in the
  CFI/JEDEC code.

  Summary:

   - Fix a bug in Atmel ECC engine driver

   - Fix a bug in the CFI/JEDEC driver"

* tag 'mtd/fixes-for-4.16' of git://git.infradead.org/linux-mtd:
  mtd: jedec_probe: Fix crash in jedec_read_mfr()
  mtd: nand: atmel: Fix get_sectorsize() function

3 years agodm: fix dropped return code from dm_get_bdev_for_ioctl
Mike Snitzer [Fri, 30 Mar 2018 03:31:32 +0000 (23:31 -0400)]
dm: fix dropped return code from dm_get_bdev_for_ioctl

dm_get_bdev_for_ioctl()'s return of 0 or 1 must be the result from
prepare_ioctl (1 means the ioctl was issued to a partition, 0 means it
wasn't).  Unfortunately commit 519049afea ("dm: use blkdev_get rather
than bdgrab when issuing pass-through ioctl") reused the variable 'r'
to store the return from blkdev_get() that follows prepare_ioctl()
-- whereby dropping prepare_ioctl()'s result on the floor.

This can lead to an ioctl or persistent reservation being issued to a
partition going unnoticed, which implies the extra permission check for
CAP_SYS_RAWIO is skipped.

Fix this by using a different variable to store blkdev_get()'s return.

Fixes: 519049afea ("dm: use blkdev_get rather than bdgrab when issuing pass-through ioctl")
Reported-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Fri, 30 Mar 2018 01:49:19 +0000 (21:49 -0400)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkman says:

====================
pull-request: bpf 2018-03-29

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Fix nfp to properly check max insn count while emitting
   instructions in the JIT which was wrongly comparing bytes
   against number of instructions before, from Jakub.

2) Fix for bpftool to avoid usage of hex numbers in JSON
   output since JSON doesn't accept hex numbers with 0x
   prefix, also from Jakub.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodm mpath: fix support for loading scsi_dh modules during table load
Mike Snitzer [Thu, 29 Mar 2018 15:50:10 +0000 (11:50 -0400)]
dm mpath: fix support for loading scsi_dh modules during table load

The ability to have multipath dynamically attach a scsi_dh, that the user
specified in the multipath table, was broken by commit e8f74a0f00 ("dm
mpath: eliminate need to use scsi_device_from_queue").

Restore the ability to load, and attach, a particular scsi_dh module if
one is specified (as noticed by checking m->hw_handler_name).

Fixes: e8f74a0f00 ("dm mpath: eliminate need to use scsi_device_from_queue")
Reported-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
3 years agovhost: validate log when IOTLB is enabled
Jason Wang [Thu, 29 Mar 2018 08:00:04 +0000 (16:00 +0800)]
vhost: validate log when IOTLB is enabled

Vq log_base is the userspace address of bitmap which has nothing to do
with IOTLB. So it needs to be validated unconditionally otherwise we
may try use 0 as log_base which may lead to pin pages that will lead
unexpected result (e.g trigger BUG_ON() in set_bit_to_user()).

Fixes: 6b1e6cc7855b0 ("vhost: new device IOTLB API")
Reported-by: syzbot+6304bf97ef436580fede@syzkaller.appspotmail.com
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoqede: Do not drop rx-checksum invalidated packets.
Manish Chopra [Wed, 28 Mar 2018 10:35:52 +0000 (03:35 -0700)]
qede: Do not drop rx-checksum invalidated packets.

Today, driver drops received packets which are indicated as
invalid checksum by the device. Instead of dropping such packets,
pass them to the stack with CHECKSUM_NONE indication in skb.

Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomtd: jedec_probe: Fix crash in jedec_read_mfr()
Linus Walleij [Sat, 3 Mar 2018 22:29:03 +0000 (23:29 +0100)]
mtd: jedec_probe: Fix crash in jedec_read_mfr()

It turns out that the loop where we read manufacturer
jedec_read_mfd() can under some circumstances get a
CFI_MFR_CONTINUATION repeatedly, making the loop go
over all banks and eventually hit the end of the
map and crash because of an access violation:

Unable to handle kernel paging request at virtual address c4980000
pgd = (ptrval)
[c4980000] *pgd=03808811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] PREEMPT ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.16.0-rc1+ #150
Hardware name: Gemini (Device Tree)
PC is at jedec_probe_chip+0x6ec/0xcd0
LR is at 0x4
pc : [<c03a2bf4>]    lr : [<00000004>]    psr: 60000013
sp : c382dd18  ip : 0000ffff  fp : 00000000
r10: c0626388  r9 : 00020000  r8 : c0626340
r7 : 00000000  r6 : 00000001  r5 : c3a71afc  r4 : c382dd70
r3 : 00000001  r2 : c4900000  r1 : 00000002  r0 : 00080000
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 0000397f  Table: 00004000  DAC: 00000053
Process swapper (pid: 1, stack limit = 0x(ptrval))

Fix this by breaking the loop with a return 0 if
the offset exceeds the map size.

Fixes: 5c9c11e1c47c ("[MTD] [NOR] Add support for flash chips with ID in bank other than 0")
Cc: <stable@vger.kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
3 years agomtd: nand: atmel: Fix get_sectorsize() function
Boris Brezillon [Tue, 27 Mar 2018 17:01:58 +0000 (19:01 +0200)]
mtd: nand: atmel: Fix get_sectorsize() function

get_sectorsize() was not using the appropriate macro to extract the
ECC sector size from the config cache, which led to buggy ECC when
using 1024 byte sectors.

Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver")
Cc: <stable@vger.kernel.org>
Reported-by: Olivier Schonken <olivier.schonken@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Tested-by: Olivier Schonken <olivier.schonken@gmail.com>
3 years agohv_netvsc: enable multicast if necessary
Stephen Hemminger [Tue, 27 Mar 2018 18:28:48 +0000 (11:28 -0700)]
hv_netvsc: enable multicast if necessary

My recent change to netvsc drive in how receive flags are handled
broke multicast.  The Hyper-v/Azure virtual interface there is not a
multicast filter list, filtering is only all or none. The driver must
enable all multicast if any multicast address is present.

Fixes: 009f766ca238 ("hv_netvsc: filter multicast/broadcast")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoip_tunnel: Resolve ipsec merge conflict properly.
David S. Miller [Thu, 29 Mar 2018 15:42:14 +0000 (11:42 -0400)]
ip_tunnel: Resolve ipsec merge conflict properly.

We want to use dev_set_mtu() regardless of how we calculate
the mtu value.

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agolan78xx: Crash in lan78xx_writ_reg (Workqueue: events lan78xx_deferred_multicast_write)
Raghuram Chary J [Tue, 27 Mar 2018 09:21:16 +0000 (14:51 +0530)]
lan78xx: Crash in lan78xx_writ_reg (Workqueue: events lan78xx_deferred_multicast_write)

Description:
Crash was reported with syzkaller pointing to lan78xx_write_reg routine.

Root-cause:
Proper cleanup of workqueues and init/setup routines was not happening
in failure conditions.

Fix:
Handled the error conditions by cleaning up the queues and init/setup
routines.

Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Raghuram Chary J <raghuramchary.jallipalli@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
David S. Miller [Thu, 29 Mar 2018 14:12:47 +0000 (10:12 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2018-03-29

1) Fix a rcu_read_lock/rcu_read_unlock imbalance
   in the error path of xfrm_local_error().
   From Taehee Yoo.

2) Some VTI MTU fixes. From Stefano Brivio.

3) Fix a too early overwritten skb control buffer
   on xfrm transport mode.

Please note that this pull request has a merge conflict
in net/ipv4/ip_tunnel.c.

The conflict is between

commit f6cc9c054e77 ("ip_tunnel: Emit events for post-register MTU changes")

from the net tree and

commit 24fc79798b8d ("ip_tunnel: Clamp MTU to bounds on new link")

from the ipsec tree.

It can be solved as it is currently done in linux-next.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'drm-fixes-for-v4.16-rc8' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Thu, 29 Mar 2018 01:07:23 +0000 (15:07 -1000)]
Merge tag 'drm-fixes-for-v4.16-rc8' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Nothing serious, two amdkfd and two tegra fixes"

* tag 'drm-fixes-for-v4.16-rc8' of git://people.freedesktop.org/~airlied/linux:
  drm/tegra: dc: Using NULL instead of plain integer
  drm/amdkfd: Deallocate SDMA queues correctly
  drm/amdkfd: Fix scratch memory with HWS enabled
  drm/tegra: dc: Use correct format array for Tegra124

3 years agonetfilter: nf_nat_snmp_basic: add correct dependency to Makefile
Masahiro Yamada [Thu, 29 Mar 2018 00:24:28 +0000 (09:24 +0900)]
netfilter: nf_nat_snmp_basic: add correct dependency to Makefile

nf_nat_snmp_basic_main.c includes a generated header, but the
necessary dependency is missing in Makefile. This could cause
build error in parallel building.

Remove a weird line, and add a correct one.

Fixes: cc2d58634e0f ("netfilter: nf_nat_snmp_basic: use asn1 decoder library")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
3 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Thu, 29 Mar 2018 00:34:55 +0000 (14:34 -1000)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "8 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  MAINTAINERS: demote ARM port to "odd fixes"
  MAINTAINERS: correct rmk's email address
  mm/kmemleak.c: wait for scan completion before disabling free
  mm/memcontrol.c: fix parameter description mismatch
  mm/vmstat.c: fix vmstat_update() preemption BUG
  mm/page_owner: fix recursion bug after changing skip entries
  ipc/shm.c: add split function to shm_vm_ops
  mm, slab: memcg_link the SLAB's kmem_cache

3 years agoMerge tag 'drm/tegra/for-4.16-fixes' of git://anongit.freedesktop.org/tegra/linux...
Dave Airlie [Wed, 28 Mar 2018 23:57:09 +0000 (09:57 +1000)]
Merge tag 'drm/tegra/for-4.16-fixes' of git://anongit.freedesktop.org/tegra/linux into drm-fixes

drm/tegra: Fixes for v4.16

This contains two small fixes, one which fixes a typo that causes a
crash with the new framebuffer modifier query support and another that
fixes a build warning.

* tag 'drm/tegra/for-4.16-fixes' of git://anongit.freedesktop.org/tegra/linux:
  drm/tegra: dc: Using NULL instead of plain integer
  drm/tegra: dc: Use correct format array for Tegra124

3 years agoMerge tag 'powerpc-4.16-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Wed, 28 Mar 2018 23:54:03 +0000 (13:54 -1000)]
Merge tag 'powerpc-4.16-6' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Some more powerpc fixes for 4.16. Apologies if this is a bit big at
  rc7, but they're all reasonably important fixes. None are actually for
  new code, so they aren't indicative of 4.16 being in bad shape from
  our point of view.

   - Fix missing AT_BASE_PLATFORM (in auxv) when we're using a new
     firmware interface for describing CPU features.

   - Fix lost pending interrupts due to a race in our interrupt
     soft-masking code.

   - A workaround for a nest MMU bug with TLB invalidations on Power9.

   - A workaround for broadcast TLB invalidations on Power9.

   - Fix a bug in our instruction SLB miss handler, when handling bad
     addresses (eg. >= TASK_SIZE), which could corrupt non-volatile user
     GPRs.

  Thanks to: Aneesh Kumar K.V, Balbir Singh, Benjamin Herrenschmidt,
  Nicholas Piggin"

* tag 'powerpc-4.16-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Fix i-side SLB miss bad address handler saving nonvolatile GPRs
  powerpc/mm: Fixup tlbie vs store ordering issue on POWER9
  powerpc/mm/radix: Move the functions that does the actual tlbie closer
  powerpc/mm/radix: Remove unused code
  powerpc/mm: Workaround Nest MMU bug with TLB invalidations
  powerpc/mm: Add tracking of the number of coprocessors using a context
  powerpc/64s: Fix lost pending interrupt due to race causing lost update to irq_happened
  powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU features

3 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Wed, 28 Mar 2018 23:52:13 +0000 (13:52 -1000)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Here are are a couple of last-minute fixes for 4.16, mostly for
  regressions. As usual, the majory are device tree changes:

   - USB 3 support on rk3399 didn't work and is being reverted for now

   - One fix for an old suspend/resume bug on rk3399

   - A few regulator related fixes on Banana Pi M2, and on imx7d-sdb

   - A boot regression fix for all Aspeed SoCs failing to find their
     memory

   - One more dtc warning fix

  The other changes are:

   - A few updates to the MAINTAINERS file

   - A revert for an incorrect orion5x cleanup

   - Two power management fixes for OMAP"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: OMAP: Fix SRAM W+X mapping
  ARM: dts: aspeed: Add default memory node
  mailmap: Update email address for Gregory CLEMENT
  ARM: davinci: fix the GPIO lookup for omapl138-hawk
  MAINTAINERS: Update Tegra IOMMU maintainer
  ARM: dts: imx7d-sdb: Fix regulator-usb-otg2-vbus node name
  ARM: ux500: Fix PMU IRQ regression
  ARM: dts: rockchip: Add missing #sound-dai-cells on rk3288
  Revert "arm64: dts: rockchip: add usb3-phy otg-port support for rk3399"
  arm64: dts: rockchip: Fix rk3399-gru-* s2r (pinctrl hogs, wifi reset)
  ARM: OMAP: Fix dmtimer init for omap1
  MAINTAINERS: update email address for Maxime Ripard
  ARM: dts: sun6i: a31s: bpi-m2: add missing regulators
  ARM: dts: sun6i: a31s: bpi-m2: improve pmic properties

3 years agoMAINTAINERS: demote ARM port to "odd fixes"
Russell King [Wed, 28 Mar 2018 23:01:22 +0000 (16:01 -0700)]
MAINTAINERS: demote ARM port to "odd fixes"

As of the start of 2018, I am no longer paid to support the core 32-bit
ARM architecture code.  This means that this code is no longer
commercially supported, and is now only supported through voluntary
effort.

I will continue to merge patches as and when able, but this will be at a
lower priority than before (which means a longer latency.) I have also
be scaled back the amount of time spent reading email, so email that is
intended for my attention needs to make itself plainly obvious, or I
will miss it.

In an attempt to reduce the amount of email Cc'd to me, exclude
arch/arm/boot/dts from the maintainers patterns, but add entries for the
SolidRun platforms I look after.

Link: http://lkml.kernel.org/r/E1ezkgn-0002fO-52@rmk-PC.armlinux.org.uk
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMAINTAINERS: correct rmk's email address
Russell King [Wed, 28 Mar 2018 23:01:19 +0000 (16:01 -0700)]
MAINTAINERS: correct rmk's email address

Correct my email address in the MAINTAINTERS file.

Link: http://lkml.kernel.org/r/E1ezkgi-0002fH-01@rmk-PC.armlinux.org.uk
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/kmemleak.c: wait for scan completion before disabling free
Vinayak Menon [Wed, 28 Mar 2018 23:01:16 +0000 (16:01 -0700)]
mm/kmemleak.c: wait for scan completion before disabling free

A crash is observed when kmemleak_scan accesses the object->pointer,
likely due to the following race.

  TASK A             TASK B                     TASK C
  kmemleak_write
   (with "scan" and
   NOT "scan=on")
  kmemleak_scan()
                     create_object
                     kmem_cache_alloc fails
                     kmemleak_disable
                     kmemleak_do_cleanup
                     kmemleak_free_enabled = 0
                                                kfree
                                                kmemleak_free bails out
                                                 (kmemleak_free_enabled is 0)
                                                slub frees object->pointer
  update_checksum
  crash - object->pointer
   freed (DEBUG_PAGEALLOC)

kmemleak_do_cleanup waits for the scan thread to complete, but not for
direct call to kmemleak_scan via kmemleak_write.  So add a wait for
kmemleak_scan completion before disabling kmemleak_free, and while at it
fix the comment on stop_scan_thread.

[vinmenon@codeaurora.org: fix stop_scan_thread comment]
Link: http://lkml.kernel.org/r/1522219972-22809-1-git-send-email-vinmenon@codeaurora.org
Link: http://lkml.kernel.org/r/1522063429-18992-1-git-send-email-vinmenon@codeaurora.org
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/memcontrol.c: fix parameter description mismatch
Honglei Wang [Wed, 28 Mar 2018 23:01:12 +0000 (16:01 -0700)]
mm/memcontrol.c: fix parameter description mismatch

There are a couple of places where parameter description and function
name do not match the actual code.  Fix it.

Link: http://lkml.kernel.org/r/1520843448-17347-1-git-send-email-honglei.wang@oracle.com
Signed-off-by: Honglei Wang <honglei.wang@oracle.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/vmstat.c: fix vmstat_update() preemption BUG
Steven J. Hill [Wed, 28 Mar 2018 23:01:09 +0000 (16:01 -0700)]
mm/vmstat.c: fix vmstat_update() preemption BUG

Attempting to hotplug CPUs with CONFIG_VM_EVENT_COUNTERS enabled can
cause vmstat_update() to report a BUG due to preemption not being
disabled around smp_processor_id().

Discovered on Ubiquiti EdgeRouter Pro with Cavium Octeon II processor.

  BUG: using smp_processor_id() in preemptible [00000000] code:
  kworker/1:1/269
  caller is vmstat_update+0x50/0xa0
  CPU: 0 PID: 269 Comm: kworker/1:1 Not tainted
  4.16.0-rc4-Cavium-Octeon-00009-gf83bbd5-dirty #1
  Workqueue: mm_percpu_wq vmstat_update
  Call Trace:
    show_stack+0x94/0x128
    dump_stack+0xa4/0xe0
    check_preemption_disabled+0x118/0x120
    vmstat_update+0x50/0xa0
    process_one_work+0x144/0x348
    worker_thread+0x150/0x4b8
    kthread+0x110/0x140
    ret_from_kernel_thread+0x14/0x1c

Link: http://lkml.kernel.org/r/1520881552-25659-1-git-send-email-steven.hill@cavium.com
Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/page_owner: fix recursion bug after changing skip entries
Maninder Singh [Wed, 28 Mar 2018 23:01:05 +0000 (16:01 -0700)]
mm/page_owner: fix recursion bug after changing skip entries

This patch fixes commit 5f48f0bd4e36 ("mm, page_owner: skip unnecessary
stack_trace entries").

Because if we skip first two entries then logic of checking count value
as 2 for recursion is broken and code will go in one depth recursion.

so we need to check only one call of _RET_IP(__set_page_owner) while
checking for recursion.

Current Backtrace while checking for recursion:-

  (save_stack)             from (__set_page_owner)  // (But recursion returns true here)
  (__set_page_owner)       from (get_page_from_freelist)
  (get_page_from_freelist) from (__alloc_pages_nodemask)
  (__alloc_pages_nodemask) from (depot_save_stack)
  (depot_save_stack)       from (save_stack)       // recursion should return true here
  (save_stack)             from (__set_page_owner)
  (__set_page_owner)       from (get_page_from_freelist)
  (get_page_from_freelist) from (__alloc_pages_nodemask+)
  (__alloc_pages_nodemask) from (depot_save_stack)
  (depot_save_stack)       from (save_stack)
  (save_stack)             from (__set_page_owner)
  (__set_page_owner)       from (get_page_from_freelist)

Correct Backtrace with fix:

  (save_stack)             from (__set_page_owner) // recursion returned true here
  (__set_page_owner)       from (get_page_from_freelist)
  (get_page_from_freelist) from (__alloc_pages_nodemask+)
  (__alloc_pages_nodemask) from (depot_save_stack)
  (depot_save_stack)       from (save_stack)
  (save_stack)             from (__set_page_owner)
  (__set_page_owner)       from (get_page_from_freelist)

Link: http://lkml.kernel.org/r/1521607043-34670-1-git-send-email-maninder1.s@samsung.com
Fixes: 5f48f0bd4e36 ("mm, page_owner: skip unnecessary stack_trace entries")
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@techadventures.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ayush Mittal <ayush.m@samsung.com>
Cc: Prakash Gupta <guptap@codeaurora.org>
Cc: Vinayak Menon <vinmenon@codeaurora.org>
Cc: Vasyl Gomonovych <gomonovych@gmail.com>
Cc: Amit Sahrawat <a.sahrawat@samsung.com>
Cc: <pankaj.m@samsung.com>
Cc: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoipc/shm.c: add split function to shm_vm_ops
Mike Kravetz [Wed, 28 Mar 2018 23:01:01 +0000 (16:01 -0700)]
ipc/shm.c: add split function to shm_vm_ops

If System V shmget/shmat operations are used to create a hugetlbfs
backed mapping, it is possible to munmap part of the mapping and split
the underlying vma such that it is not huge page aligned.  This will
untimately result in the following BUG:

  kernel BUG at /build/linux-jWa1Fv/linux-4.15.0/mm/hugetlb.c:3310!
  Oops: Exception in kernel mode, sig: 5 [#1]
  LE SMP NR_CPUS=2048 NUMA PowerNV
  Modules linked in: kcm nfc af_alg caif_socket caif phonet fcrypt
  CPU: 18 PID: 43243 Comm: trinity-subchil Tainted: G         C  E 4.15.0-10-generic #11-Ubuntu
  NIP:  c00000000036e764 LR: c00000000036ee48 CTR: 0000000000000009
  REGS: c000003fbcdcf810 TRAP: 0700   Tainted: G         C  E (4.15.0-10-generic)
  MSR:  9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 24002222  XER: 20040000
  CFAR: c00000000036ee44 SOFTE: 1
  NIP __unmap_hugepage_range+0xa4/0x760
  LR __unmap_hugepage_range_final+0x28/0x50
  Call Trace:
    0x7115e4e00000 (unreliable)
    __unmap_hugepage_range_final+0x28/0x50
    unmap_single_vma+0x11c/0x190
    unmap_vmas+0x94/0x140
    exit_mmap+0x9c/0x1d0
    mmput+0xa8/0x1d0
    do_exit+0x360/0xc80
    do_group_exit+0x60/0x100
    SyS_exit_group+0x24/0x30
    system_call+0x58/0x6c
  ---[ end trace ee88f958a1c62605 ]---

This bug was introduced by commit 31383c6865a5 ("mm, hugetlbfs:
introduce ->split() to vm_operations_struct").  A split function was
added to vm_operations_struct to determine if a mapping can be split.
This was mostly for device-dax and hugetlbfs mappings which have
specific alignment constraints.

Mappings initiated via shmget/shmat have their original vm_ops
overwritten with shm_vm_ops.  shm_vm_ops functions will call back to the
original vm_ops if needed.  Add such a split function to shm_vm_ops.

Link: http://lkml.kernel.org/r/20180321161314.7711-1-mike.kravetz@oracle.com
Fixes: 31383c6865a5 ("mm, hugetlbfs: introduce ->split() to vm_operations_struct")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Reviewed-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Tested-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm, slab: memcg_link the SLAB's kmem_cache
Shakeel Butt [Wed, 28 Mar 2018 23:00:57 +0000 (16:00 -0700)]
mm, slab: memcg_link the SLAB's kmem_cache

All the root caches are linked into slab_root_caches which was
introduced by the commit 510ded33e075 ("slab: implement slab_root_caches
list") but it missed to add the SLAB's kmem_cache.

While experimenting with opt-in/opt-out kmem accounting, I noticed
system crashes due to NULL dereference inside cache_from_memcg_idx()
while deferencing kmem_cache.memcg_params.memcg_caches.  The upstream
clean kernel will not see these crashes but SLAB should be consistent
with SLUB which does linked its boot caches (kmem_cache_node and
kmem_cache) into slab_root_caches.

Link: http://lkml.kernel.org/r/20180319210020.60289-1-shakeelb@google.com
Fixes: 510ded33e075c ("slab: implement slab_root_caches list")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRDMA/ucma: Introduce safer rdma_addr_size() variants
Roland Dreier [Wed, 28 Mar 2018 18:27:22 +0000 (11:27 -0700)]
RDMA/ucma: Introduce safer rdma_addr_size() variants

There are several places in the ucma ABI where userspace can pass in a
sockaddr but set the address family to AF_IB.  When that happens,
rdma_addr_size() will return a size bigger than sizeof struct sockaddr_in6,
and the ucma kernel code might end up copying past the end of a buffer
not sized for a struct sockaddr_ib.

Fix this by introducing new variants

    int rdma_addr_size_in6(struct sockaddr_in6 *addr);
    int rdma_addr_size_kss(struct __kernel_sockaddr_storage *addr);

that are type-safe for the types used in the ucma ABI and return 0 if the
size computed is bigger than the size of the type passed in.  We can use
these new variants to check what size userspace has passed in before
copying any addresses.

Reported-by: <syzbot+6800425d54ed3ed8135d@syzkaller.appspotmail.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
3 years agox86/platform/UV: Fix critical UV MMR address error
mike.travis@hpe.com [Wed, 28 Mar 2018 17:40:11 +0000 (12:40 -0500)]
x86/platform/UV: Fix critical UV MMR address error

A critical error was found testing the fixed UV4 HUB in that an MMR address
was found to be incorrect.  This causes the virtual address space for
accessing the MMIOH1 region to be allocated with the incorrect size.

Fixes: 673aa20c55a1 ("x86/platform/UV: Update uv_mmrs.h to prepare for UV4A fixes")
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Cc: Russ Anderson <russ.anderson@hpe.com>
Cc: Andrew Banman <andrew.banman@hpe.com>
Link: https://lkml.kernel.org/r/20180328174011.041801248@stormcage.americas.sgi.com
3 years agoperf/hwbp: Simplify the perf-hwbp code, fix documentation
Linus Torvalds [Tue, 27 Mar 2018 01:39:07 +0000 (15:39 -1000)]
perf/hwbp: Simplify the perf-hwbp code, fix documentation

Annoyingly, modify_user_hw_breakpoint() unnecessarily complicates the
modification of a breakpoint - simplify it and remove the pointless
local variables.

Also update the stale Docbook while at it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
3 years agodrm/tegra: dc: Using NULL instead of plain integer
Wei Yongjun [Wed, 28 Mar 2018 12:52:10 +0000 (12:52 +0000)]
drm/tegra: dc: Using NULL instead of plain integer

Fixes the following sparse warnings:

drivers/gpu/drm/tegra/dc.c:2181:69: warning:
  Using plain integer as NULL pointer

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
3 years agoKVM: x86: Fix pv tlb flush dependencies
Wanpeng Li [Sun, 25 Mar 2018 04:18:35 +0000 (21:18 -0700)]
KVM: x86: Fix pv tlb flush dependencies

PV TLB FLUSH can only be turned on when steal time is enabled.
The condition got reversed during conflict resolution.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Fixes: 4f2f61fc5071 ("KVM: X86: Avoid traversing all the cpus for pv tlb flush when steal time is disabled")
[Rebased on top of kvm/master and reworded the commit message. - Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
3 years agox86/platform/uv/BAU: Add APIC idt entry
Andrew Banman [Tue, 27 Mar 2018 22:09:06 +0000 (17:09 -0500)]
x86/platform/uv/BAU: Add APIC idt entry

BAU uses the old alloc_initr_gate90 method to setup its interrupt. This
fails silently as the BAU vector is in the range of APIC vectors that are
registered to the spurious interrupt handler. As a consequence BAU
broadcasts are not handled, and the broadcast source CPU hangs.

Update BAU to use new idt structure.

Fixes: dc20b2d52653 ("x86/idt: Move interrupt gate initialization to IDT code")
Signed-off-by: Andrew Banman <abanman@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Mike Travis <mike.travis@hpe.com>
Cc: Dimitri Sivanich <sivanich@hpe.com>
Cc: Russ Anderson <rja@hpe.com>
Cc: stable@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/1522188546-196177-1-git-send-email-abanman@hpe.com
3 years agospi: spi-atmel: Use correct enum for DMA transfer direction
Stefan Agner [Sat, 24 Mar 2018 10:48:00 +0000 (11:48 +0100)]
spi: spi-atmel: Use correct enum for DMA transfer direction

Use enum dma_transfer_direction as required by the functions
dmaengine_prep_slave_(sg|single)() instead of enum dma_data_direction.
This won't change behavior in practice as the enum values are
equivalent.

This fixes two warnings when building with clang:
  drivers/spi/spi-atmel.c:771:12: warning: implicit conversion from enumeration
      type 'enum dma_data_direction' to different enumeration type
      'enum dma_transfer_direction'
      [-Wenum-conversion]
                                                     DMA_FROM_DEVICE,
                                                     ^~~~~~~~~~~~~~~
  ...

Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
3 years agoMerge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Wed, 28 Mar 2018 00:28:40 +0000 (14:28 -1000)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "A small number of small fixes for ARM, mostly for some build issues.

  One fix for a regression caused by the cpu hotplug conversion from a
  few kernel versions ago"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8750/1: deflate_xip_data.sh: minor fixes
  ARM: 8748/1: mm: Define vdso_start, vdso_end as array
  ARM: 8747/1: make CONFIG_DEBUG_WX depend on MMU
  ARM: 8746/1: vfp: Go back to clearing vfp_current_hw_state[]

3 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Wed, 28 Mar 2018 00:11:46 +0000 (14:11 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two driver fixes (ibmvfc, iscsi_tcp) and a USB fix for devices that
  give the wrong return to Read Capacity and cause a huge log spew.

  The remaining five patches all try to fix commit 84676c1f21e8
  ("genirq/affinity: assign vectors to all possible CPUs") which broke
  the non-mq I/O path"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: iscsi_tcp: set BDI_CAP_STABLE_WRITES when data digest enabled
  scsi: sd: Remember that READ CAPACITY(16) succeeded
  scsi: ibmvfc: Avoid unnecessary port relogin
  scsi: virtio_scsi: unify scsi_host_template
  scsi: virtio_scsi: fix IO hang caused by automatic irq vector affinity
  scsi: core: introduce force_blk_mq
  scsi: megaraid_sas: fix selection of reply queue
  scsi: hpsa: fix selection of reply queue

3 years agoRDMA/hns: ensure for-loop actually iterates and free's buffers
Colin Ian King [Mon, 26 Mar 2018 15:10:18 +0000 (16:10 +0100)]
RDMA/hns: ensure for-loop actually iterates and free's buffers

The current for-loop zeros variable i and only loops once, hence
not all the buffers are free'd.  Fix this by setting i correctly.

Detected by CoverityScan, CID#1463415 ("Operands don't affect result")

Fixes: a5073d6054f7 ("RDMA/hns: Add eq support of hip08")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
3 years agoRDMA/ucma: Check that device exists prior to accessing it
Leon Romanovsky [Sun, 25 Mar 2018 08:39:05 +0000 (11:39 +0300)]
RDMA/ucma: Check that device exists prior to accessing it

Ensure that device exists prior to accessing its properties.

Reported-by: <syzbot+71655d44855ac3e76366@syzkaller.appspotmail.com>
Fixes: 75216638572f ("RDMA/cma: Export rdma cm interface to userspace")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
3 years agoRDMA/ucma: Check that device is connected prior to access it
Leon Romanovsky [Sun, 25 Mar 2018 08:23:55 +0000 (11:23 +0300)]
RDMA/ucma: Check that device is connected prior to access it

Add missing check that device is connected prior to access it.

[   55.358652] BUG: KASAN: null-ptr-deref in rdma_init_qp_attr+0x4a/0x2c0
[   55.359389] Read of size 8 at addr 00000000000000b0 by task qp/618
[   55.360255]
[   55.360432] CPU: 1 PID: 618 Comm: qp Not tainted 4.16.0-rc1-00071-gcaf61b1b8b88 #91
[   55.361693] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org 04/01/2014
[   55.363264] Call Trace:
[   55.363833]  dump_stack+0x5c/0x77
[   55.364215]  kasan_report+0x163/0x380
[   55.364610]  ? rdma_init_qp_attr+0x4a/0x2c0
[   55.365238]  rdma_init_qp_attr+0x4a/0x2c0
[   55.366410]  ucma_init_qp_attr+0x111/0x200
[   55.366846]  ? ucma_notify+0xf0/0xf0
[   55.367405]  ? _get_random_bytes+0xea/0x1b0
[   55.367846]  ? urandom_read+0x2f0/0x2f0
[   55.368436]  ? kmem_cache_alloc_trace+0xd2/0x1e0
[   55.369104]  ? refcount_inc_not_zero+0x9/0x60
[   55.369583]  ? refcount_inc+0x5/0x30
[   55.370155]  ? rdma_create_id+0x215/0x240
[   55.370937]  ? _copy_to_user+0x4f/0x60
[   55.371620]  ? mem_cgroup_commit_charge+0x1f5/0x290
[   55.372127]  ? _copy_from_user+0x5e/0x90
[   55.372720]  ucma_write+0x174/0x1f0
[   55.373090]  ? ucma_close_id+0x40/0x40
[   55.373805]  ? __lru_cache_add+0xa8/0xd0
[   55.374403]  __vfs_write+0xc4/0x350
[   55.374774]  ? kernel_read+0xa0/0xa0
[   55.375173]  ? fsnotify+0x899/0x8f0
[   55.375544]  ? fsnotify_unmount_inodes+0x170/0x170
[   55.376689]  ? __fsnotify_update_child_dentry_flags+0x30/0x30
[   55.377522]  ? handle_mm_fault+0x174/0x320
[   55.378169]  vfs_write+0xf7/0x280
[   55.378864]  SyS_write+0xa1/0x120
[   55.379270]  ? SyS_read+0x120/0x120
[   55.379643]  ? mm_fault_error+0x180/0x180
[   55.380071]  ? task_work_run+0x7d/0xd0
[   55.380910]  ? __task_pid_nr_ns+0x120/0x140
[   55.381366]  ? SyS_read+0x120/0x120
[   55.381739]  do_syscall_64+0xeb/0x250
[   55.382143]  entry_SYSCALL_64_after_hwframe+0x21/0x86
[   55.382841] RIP: 0033:0x7fc2ef803e99
[   55.383227] RSP: 002b:00007fffcc5f3be8 EFLAGS: 00000217 ORIG_RAX: 0000000000000001
[   55.384173] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc2ef803e99
[   55.386145] RDX: 0000000000000057 RSI: 0000000020000080 RDI: 0000000000000003
[   55.388418] RBP: 00007fffcc5f3c00 R08: 0000000000000000 R09: 0000000000000000
[   55.390542] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000400480
[   55.392916] R13: 00007fffcc5f3cf0 R14: 0000000000000000 R15: 0000000000000000
[   55.521088] Code: e5 4d 1e ff 48 89 df 44 0f b6 b3 b8 01 00 00 e8 65 50 1e ff 4c 8b 2b 49
8d bd b0 00 00 00 e8 56 50 1e ff 41 0f b6 c6 48 c1 e0 04 <49> 03 85 b0 00 00 00 48 8d 78 08
48 89 04 24 e8 3a 4f 1e ff 48
[   55.525980] RIP: rdma_init_qp_attr+0x52/0x2c0 RSP: ffff8801e2c2f9d8
[   55.532648] CR2: 00000000000000b0
[   55.534396] ---[ end trace 70cee64090251c0b ]---

Fixes: 75216638572f ("RDMA/cma: Export rdma cm interface to userspace")
Fixes: d541e45500bd ("IB/core: Convert ah_attr from OPA to IB when copying to user")
Reported-by: <syzbot+7b62c837c2516f8f38c8@syzkaller.appspotmail.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
3 years agoRDMA/rdma_cm: Fix use after free race with process_one_req
Jason Gunthorpe [Thu, 22 Mar 2018 20:04:23 +0000 (14:04 -0600)]
RDMA/rdma_cm: Fix use after free race with process_one_req

process_one_req() can race with rdma_addr_cancel():

           CPU0                                 CPU1
           ====                                 ====
 process_one_work()
  debug_work_deactivate(work);
  process_one_req()
                                        rdma_addr_cancel()
                                  mutex_lock(&lock);
                  set_timeout(&req->work,..);
                                              __queue_work()
           debug_work_activate(work);
                                  mutex_unlock(&lock);

   mutex_lock(&lock);
[..]
list_del(&req->list);
   mutex_unlock(&lock);
[..]

   // ODEBUG explodes since the work is still queued.
   kfree(req);

Causing ODEBUG to detect the use after free:

ODEBUG: free active (active state 0) object type: work_struct hint: process_one_req+0x0/0x6c0 include/net/dst.h:165
WARNING: CPU: 0 PID: 79 at lib/debugobjects.c:291 debug_print_object+0x166/0x220 lib/debugobjects.c:288
kvm: emulating exchange as write
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 79 Comm: kworker/u4:3 Not tainted 4.16.0-rc6+ #361
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ib_addr process_one_req
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x24d lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x1f4/0x2b0 lib/bug.c:186
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986
RIP: 0010:debug_print_object+0x166/0x220 lib/debugobjects.c:288
RSP: 0000:ffff8801d966f210 EFLAGS: 00010086
RAX: dffffc0000000008 RBX: 0000000000000003 RCX: ffffffff815acd6e
RDX: 0000000000000000 RSI: 1ffff1003b2cddf2 RDI: 0000000000000000
RBP: ffff8801d966f250 R08: 0000000000000000 R09: 1ffff1003b2cddc8
R10: ffffed003b2cde71 R11: ffffffff86f39a98 R12: 0000000000000001
R13: ffffffff86f15540 R14: ffffffff86408700 R15: ffffffff8147c0a0
 __debug_check_no_obj_freed lib/debugobjects.c:745 [inline]
 debug_check_no_obj_freed+0x662/0xf1f lib/debugobjects.c:774
 kfree+0xc7/0x260 mm/slab.c:3799
 process_one_req+0x2e7/0x6c0 drivers/infiniband/core/addr.c:592
 process_one_work+0xc47/0x1bb0 kernel/workqueue.c:2113
 worker_thread+0x223/0x1990 kernel/workqueue.c:2247
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406

Fixes: 5fff41e1f89d ("IB/core: Fix race condition in resolving IP to MAC")
Reported-by: <syzbot+3b4acab09b6463472d0a@syzkaller.appspotmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
3 years agoqede: Fix barrier usage after tx doorbell write.
Manish Chopra [Tue, 27 Mar 2018 13:34:41 +0000 (06:34 -0700)]
qede: Fix barrier usage after tx doorbell write.

Since commit c5ad119fb6c09b0297446be05bd66602fa564758
("net: sched: pfifo_fast use skb_array") driver is exposed
to an issue where it is hitting NULL skbs while handling TX
completions. Driver uses mmiowb() to flush the writes to the
doorbell bar which is a write-combined bar, however on x86
mmiowb() does not flush the write combined buffer.

This patch fixes this problem by replacing mmiowb() with wmb()
after the write combined doorbell write so that writes are
flushed and synchronized from more than one processor.

V1->V2:
-------
This patch was marked as "superseded" in patchwork.
(Not really sure for what reason).Resending it as v2.

Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agovhost: correctly remove wait queue during poll failure
Jason Wang [Tue, 27 Mar 2018 12:50:52 +0000 (20:50 +0800)]
vhost: correctly remove wait queue during poll failure

We tried to remove vq poll from wait queue, but do not check whether
or not it was in a list before. This will lead double free. Fixing
this by switching to use vhost_poll_stop() which zeros poll->wqh after
removing poll from waitqueue to make sure it won't be freed twice.

Cc: Darren Kenny <darren.kenny@oracle.com>
Reported-by: syzbot+c0272972b01b872e604a@syzkaller.appspotmail.com
Fixes: 2b8b328b61c79 ("vhost_net: handle polling errors when setting backend")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agokbuild: rpm-pkg: Support GNU tar >= 1.29
Jason Gunthorpe [Fri, 23 Mar 2018 17:59:36 +0000 (11:59 -0600)]
kbuild: rpm-pkg: Support GNU tar >= 1.29

There is a change in how command line parsing is done in this version.
Excludes and includes are now ordered with the file list. Since
the spec file puts the file list before the exclude list it means newer
tar ignores the excludes and packs all the build output into the
kernel-devel RPM resulting in a huge package.

Simple argument re-ordering fixes the problem.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
3 years agobuilddeb: Fix header package regarding dtc source links
Jan Kiszka [Wed, 21 Mar 2018 05:15:28 +0000 (13:15 +0800)]
builddeb: Fix header package regarding dtc source links

Since d5d332d3f7e8, a couple of links in scripts/dtc/include-prefixes
are additionally required in order to build device trees with the header
package.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
3 years agoMerge branch 'mlx4-misc-fixes-for-4.16'
David S. Miller [Tue, 27 Mar 2018 16:02:30 +0000 (12:02 -0400)]
Merge branch 'mlx4-misc-fixes-for-4.16'

Tariq Toukan says:

====================
mlx4 misc fixes for 4.16

This patchset contains misc bug fixes from the team
to the mlx4 Core and Eth drivers.

Patch 1 by Eran fixes a control mix of PFC and Global pauses, please queue it
to -stable for >= v4.8.
Patch 2 by Moshe fixes a resource leak in slave's delete flow, please queue it
to -stable for >= v4.5.

Series generated against net commit:
3c82b372a9f4 net: dsa: mt7530: fix module autoloading for OF platform drivers
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/mlx4_core: Fix memory leak while delete slave's resources
Moshe Shemesh [Tue, 27 Mar 2018 11:41:19 +0000 (14:41 +0300)]
net/mlx4_core: Fix memory leak while delete slave's resources

mlx4_delete_all_resources_for_slave in resource tracker should free all
memory allocated for a slave.
While releasing memory of fs_rule, it misses releasing memory of
fs_rule->mirr_mbox.

Fixes: 78efed275117 ('net/mlx4_core: Support mirroring VF DMFS rules on both ports')
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/mlx4_en: Fix mixed PFC and Global pause user control requests
Eran Ben Elisha [Tue, 27 Mar 2018 11:41:18 +0000 (14:41 +0300)]
net/mlx4_en: Fix mixed PFC and Global pause user control requests

Global pause and PFC configuration should be mutually exclusive (i.e. only
one of them at most can be set). However, once PFC was turned off,
driver automatically turned Global pause on. This is a bug.

Fix the driver behaviour to turn off PFC/Global once the user turned the
other on.

This also fixed a weird behaviour that at a current time, the profile
had both PFC and global pause configuration turned on, which is
Hardware-wise impossible and caused returning false positive indication
to query tools.

In addition, fix error code when setting global pause or PFC to change
metadata only upon successful change.

Also, removed useless debug print.

Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Fixes: c27a02cd94d6 ("mlx4_en: Add driver for Mellanox ConnectX 10GbE NIC")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/smc: use announced length in sock_recvmsg()
Ursula Braun [Tue, 27 Mar 2018 08:43:50 +0000 (10:43 +0200)]
net/smc: use announced length in sock_recvmsg()

Not every CLC proposal message needs the maximum buffer length.
Due to the MSG_WAITALL flag, it is important to use the peeked
real length when receiving the message.

Fixes: d63d271ce2b5ce ("smc: switch to sock_recvmsg()")
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agollc: properly handle dev_queue_xmit() return value
Cong Wang [Mon, 26 Mar 2018 22:08:33 +0000 (15:08 -0700)]
llc: properly handle dev_queue_xmit() return value

llc_conn_send_pdu() pushes the skb into write queue and
calls llc_conn_send_pdus() to flush them out. However, the
status of dev_queue_xmit() is not returned to caller,
in this case, llc_conn_state_process().

llc_conn_state_process() needs hold the skb no matter
success or failure, because it still uses it after that,
therefore we should hold skb before dev_queue_xmit() when
that skb is the one being processed by llc_conn_state_process().

For other callers, they can just pass NULL and ignore
the return value as they are.

Reported-by: Noam Rathaus <noamr@beyondsecurity.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'mlx5-fixes-2018-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Tue, 27 Mar 2018 15:41:56 +0000 (11:41 -0400)]
Merge tag 'mlx5-fixes-2018-03-23' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2018-03-23

The following series includes fixes for mlx5 netdev and eswitch.

v1->v2:
    - Fixed commit message quotation marks in patch #7

For -stable v4.12
    ('net/mlx5e: Avoid using the ipv6 stub in the TC offload neigh update path')
    ('net/mlx5e: Fix traffic being dropped on VF representor')

For -stable v4.13
    ('net/mlx5e: Fix memory usage issues in offloading TC flows')
    ('net/mlx5e: Verify coalescing parameters in range')

For -stable v4.14
    ('net/mlx5e: Don't override vport admin link state in switchdev mode')

For -stable v4.15
    ('108b2b6d5c02 net/mlx5e: Sync netdev vxlan ports at open')

Please pull and let me know if there's any problem.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agostrparser: Fix sign of err codes
Dave Watson [Mon, 26 Mar 2018 19:31:21 +0000 (12:31 -0700)]
strparser: Fix sign of err codes

strp_parser_err is called with a negative code everywhere, which then
calls abort_parser with a negative code.  strp_msg_timeout calls
abort_parser directly with a positive code.  Negate ETIMEDOUT
to match signed-ness of other calls.

The default abort_parser callback, strp_abort_strp, sets
sk->sk_err to err.  Also negate the error here so sk_err always
holds a positive value, as the rest of the net code expects.  Currently
a negative sk_err can result in endless loops, or user code that
thinks it actually sent/received err bytes.

Found while testing net/tls_sw recv path.

Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages")
Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet sched actions: fix dumping which requires several messages to user space
Craig Dillabaugh [Mon, 26 Mar 2018 18:58:32 +0000 (14:58 -0400)]
net sched actions: fix dumping which requires several messages to user space

Fixes a bug in the tcf_dump_walker function that can cause some actions
to not be reported when dumping a large number of actions. This issue
became more aggrevated when cookies feature was added. In particular
this issue is manifest when large cookie values are assigned to the
actions and when enough actions are created that the resulting table
must be dumped in multiple batches.

The number of actions returned in each batch is limited by the total
number of actions and the memory buffer size.  With small cookies
the numeric limit is reached before the buffer size limit, which avoids
the code path triggering this bug. When large cookies are used buffer
fills before the numeric limit, and the erroneous code path is hit.

For example after creating 32 csum actions with the cookie
aaaabbbbccccdddd

$ tc actions ls action csum
total acts 26

    action order 0: csum (tcp) action continue
    index 1 ref 1 bind 0
    cookie aaaabbbbccccdddd

    .....

    action order 25: csum (tcp) action continue
    index 26 ref 1 bind 0
    cookie aaaabbbbccccdddd
total acts 6

    action order 0: csum (tcp) action continue
    index 28 ref 1 bind 0
    cookie aaaabbbbccccdddd

    ......

    action order 5: csum (tcp) action continue
    index 32 ref 1 bind 0
    cookie aaaabbbbccccdddd

Note that the action with index 27 is omitted from the report.

Fixes: 4b3550ef530c ("[NET_SCHED]: Use nla_nest_start/nla_nest_end")"
Signed-off-by: Craig Dillabaugh <cdillaba@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: fix setting driver_data after register_netdev
Heiner Kallweit [Mon, 26 Mar 2018 17:19:30 +0000 (19:19 +0200)]
r8169: fix setting driver_data after register_netdev

pci_set_drvdata() is called only after registering the net_device,
therefore we could run into a NPE if one of the functions using
driver_data is called before it's set.

Fix this by calling pci_set_drvdata() before registering the
net_device.

This fix is a candidate for stable. As far as I can see the
bug has been there in kernel version 3.2 already, therefore
I can't provide a reference which commit is fixed by it.

The fix may need small adjustments per kernel version because
due to other changes the label which is jumped to if
register_netdev() fails has changed over time.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: fix possible out-of-bound read in skb_network_protocol()
Eric Dumazet [Mon, 26 Mar 2018 15:08:07 +0000 (08:08 -0700)]
net: fix possible out-of-bound read in skb_network_protocol()

skb mac header is not necessarily set at the time skb_network_protocol()
is called. Use skb->data instead.

BUG: KASAN: slab-out-of-bounds in skb_network_protocol+0x46b/0x4b0 net/core/dev.c:2739
Read of size 2 at addr ffff8801b3097a0b by task syz-executor5/14242

CPU: 1 PID: 14242 Comm: syz-executor5 Not tainted 4.16.0-rc6+ #280
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x24d lib/dump_stack.c:53
 print_address_description+0x73/0x250 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report+0x23c/0x360 mm/kasan/report.c:412
 __asan_report_load_n_noabort+0xf/0x20 mm/kasan/report.c:443
 skb_network_protocol+0x46b/0x4b0 net/core/dev.c:2739
 harmonize_features net/core/dev.c:2924 [inline]
 netif_skb_features+0x509/0x9b0 net/core/dev.c:3011
 validate_xmit_skb+0x81/0xb00 net/core/dev.c:3084
 validate_xmit_skb_list+0xbf/0x120 net/core/dev.c:3142
 packet_direct_xmit+0x117/0x790 net/packet/af_packet.c:256
 packet_snd net/packet/af_packet.c:2944 [inline]
 packet_sendmsg+0x3aed/0x60b0 net/packet/af_packet.c:2969
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:639
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2047
 __sys_sendmsg+0xe5/0x210 net/socket.c:2081

Fixes: 19acc327258a ("gso: Handle Trans-Ether-Bridging protocol in skb_network_protocol()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Pravin B Shelar <pshelar@ovn.org>
Reported-by: Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet-usb: add qmi_wwan if on lte modem wistron neweb d18q1
Giuseppe Lippolis [Mon, 26 Mar 2018 14:34:39 +0000 (16:34 +0200)]
net-usb: add qmi_wwan if on lte modem wistron neweb d18q1

This modem is embedded on dlink dwr-921 router.
    The oem configuration states:

    T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=480 MxCh= 0
    D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
    P:  Vendor=1435 ProdID=0918 Rev= 2.32
    S:  Manufacturer=Android
    S:  Product=Android
    S:  SerialNumber=0123456789ABCDEF
    C:* #Ifs= 7 Cfg#= 1 Atr=80 MxPwr=500mA
    I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
    E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none)
    E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
    E:  Ad=84(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
    E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
    E:  Ad=86(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
    E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
    E:  Ad=88(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
    E:  Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    E:  Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    I:* If#= 5 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
    E:  Ad=8a(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
    E:  Ad=89(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    E:  Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    I:* If#= 6 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=(none)
    E:  Ad=8b(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
    E:  Ad=07(O) Atr=02(Bulk) MxPS= 512 Ivl=125us

Tested on openwrt distribution

Signed-off-by: Giuseppe Lippolis <giu.lippolis@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'batadv-net-for-davem-20180326' of git://git.open-mesh.org/linux-merge
David S. Miller [Tue, 27 Mar 2018 14:40:19 +0000 (10:40 -0400)]
Merge tag 'batadv-net-for-davem-20180326' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
Here are some batman-adv bugfixes:

 - fix multicast-via-unicast transmissions for AP isolation and gateway
   extension, by Linus Luessing (2 patches)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoALSA: pcm: potential uninitialized return values
Dan Carpenter [Tue, 27 Mar 2018 13:07:52 +0000 (16:07 +0300)]
ALSA: pcm: potential uninitialized return values

Smatch complains that "tmp" can be uninitialized if we do a zero size
write.

Fixes: 02a5d6925cd3 ("ALSA: pcm: Avoid potential races between OSS ioctls and read/write")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
3 years agoMerge tag 'sunxi-fixes-for-4.16' of ssh://gitolite.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Tue, 27 Mar 2018 11:12:10 +0000 (13:12 +0200)]
Merge tag 'sunxi-fixes-for-4.16' of ssh://gitolite./linux/kernel/git/sunxi/linux into fixes

Pull "Allwinner Fixes for 4.16" from Maxime Ripard:

The first and second patches fix the regulator support for the Bananapi M2
board.

The last one updates my email address in MAINTAINERS.

* tag 'sunxi-fixes-for-4.16' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  MAINTAINERS: update email address for Maxime Ripard
  ARM: dts: sun6i: a31s: bpi-m2: add missing regulators
  ARM: dts: sun6i: a31s: bpi-m2: improve pmic properties

3 years agoMerge tag 'omap-for-v4.16/sram-fix-signed' of ssh://gitolite.kernel.org/pub/scm/linux...
Arnd Bergmann [Tue, 27 Mar 2018 11:11:21 +0000 (13:11 +0200)]
Merge tag 'omap-for-v4.16/sram-fix-signed' of ssh://gitolite./linux/kernel/git/tmlind/linux-omap into fixes

Pull "Two fixes for omap variants for v4.16-rc cycle" from Tony Lindgren:

Fix insecure W+X mapping warning for SRAM for omaps that
don't yet use drivers/misc/*sram*.c code. An earlier attempt
at fixing this turned out to cause problems with PM on omap3,
this version works with PM on omap3.

Also fix dmtimer probe for omap16xx devices that was noticed
with the pending dmtimer move to drivers. It seems this has
been broken for a while and is a non-critical for booting.
It is needed for PM on omap16xx though.

* tag 'omap-for-v4.16/sram-fix-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP: Fix SRAM W+X mapping
  ARM: OMAP: Fix dmtimer init for omap1

3 years agoMerge tag 'tegra-for-4.17-misc' of ssh://gitolite.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Tue, 27 Mar 2018 11:09:09 +0000 (13:09 +0200)]
Merge tag 'tegra-for-4.17-misc' of ssh://gitolite./linux/kernel/git/tegra/linux into fixes

Pull "ARM: tegra: Miscellaneous changes for v4.17-rc1" from Thierry Reding:

This contains a single patch to update the MAINTAINERS entry for the
Tegra SMMU driver.

* tag 'tegra-for-4.17-misc' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  MAINTAINERS: Update Tegra IOMMU maintainer

3 years agox86/alternatives: Fixup alternative_call_2
Alexey Dobriyan [Sun, 14 Jan 2018 12:05:04 +0000 (15:05 +0300)]
x86/alternatives: Fixup alternative_call_2

The following pattern fails to compile while the same pattern
with alternative_call() does:

if (...)
alternative_call_2(...);
else
alternative_call_2(...);

as it expands into

if (...)
{
}; <===
else
{
};

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20180114120504.GA11368@avx2
3 years agoMerge tag 'drm-amdkfd-fixes-2018-03-25' of git://people.freedesktop.org/~gabbayo...
Dave Airlie [Tue, 27 Mar 2018 07:39:50 +0000 (17:39 +1000)]
Merge tag 'drm-amdkfd-fixes-2018-03-25' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes

- Programming VMID correctly for scratch memory with HWS
- deallocating SDMA queues correctly in various situations

* tag 'drm-amdkfd-fixes-2018-03-25' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: Deallocate SDMA queues correctly
  drm/amdkfd: Fix scratch memory with HWS enabled

3 years agoperf/x86/intel: Fix linear IP of PEBS real_ip on Haswell and later CPUs
Stephane Eranian [Fri, 23 Mar 2018 07:01:47 +0000 (00:01 -0700)]
perf/x86/intel: Fix linear IP of PEBS real_ip on Haswell and later CPUs

this patch fix a bug in how the pebs->real_ip is handled in the PEBS
handler. real_ip only exists in Haswell and later processor. It is
actually the eventing IP, i.e., where the event occurred. As opposed
to the pebs->ip which is the PEBS interrupt IP which is always off
by one.

The problem is that the real_ip just like the IP needs to be fixed up
because PEBS does not record all the machine state registers, and
in particular the code segement (cs). This is why we have the set_linear_ip()
function. The problem was that set_linear_ip() was only used on the pebs->ip
and not the pebs->real_ip.

We have profiles which ran into invalid callstacks because of this.
Here is an example:

 .....  0: ffffffffffffff80 recent entry, marker kernel v
 .....  1: 000000000040044d <= user address in kernel space!
 .....  2: fffffffffffffe00 marker enter user v
 .....  3: 000000000040044d
 .....  4: 00000000004004b6 oldest entry

Debugging output in get_perf_callchain():

 [  857.769909] CALLCHAIN: CPU8 ip=40044d regs->cs=10 user_mode(regs)=0

The problem is that the kernel entry in 1: points to a user level
address. How can that be?

The reason is that with PEBS sampling the instruction that caused the event
to occur and the instruction where the CPU was when the interrupt was posted
may be far apart. And sometime during that time window, the privilege level may
change. This happens, for instance, when the PEBS sample is taken close to a
kernel entry point. Here PEBS, eventing IP (real_ip) captured a user level
instruction. But by the time the PMU interrupt fired, the processor had already
entered kernel space. This is why the debug output shows a user address with
user_mode() false.

The problem comes from PEBS not recording the code segment (cs) register.
The register is used in x86_64 to determine if executing in kernel vs user
space. This is okay because the kernel has a software workaround called
set_linear_ip(). But the issue in setup_pebs_sample_data() is that
set_linear_ip() is never called on the real_ip value when it is available
(Haswell and later) and precise_ip > 1.

This patch fixes this problem and eliminates the callchain discrepancy.

The patch restructures the code around set_linear_ip() to minimize the number
of times the IP has to be set.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: kan.liang@intel.com
Link: http://lkml.kernel.org/r/1521788507-10231-1-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
3 years agoobjtool: Add Clang support
Josh Poimboeuf [Thu, 22 Mar 2018 18:00:37 +0000 (13:00 -0500)]
objtool: Add Clang support

Since the ORC unwinder was made the default on x86_64, Clang-built
defconfig kernels have triggered some new objtool warnings:

  drivers/gpu/drm/i915/i915_gpu_error.o: warning: objtool: i915_error_printf()+0x6c: return with modified stack frame
  drivers/gpu/drm/i915/intel_display.o: warning: objtool: pipe_config_err()+0xa6: return with modified stack frame

The problem is that objtool has never seen clang-built binaries before.

Shockingly enough, objtool is apparently able to follow the code flow
mostly fine, except for one instruction sequence.  Instead of a LEAVE
instruction, clang restores RSP and RBP the long way:

   67c:   48 89 ec                mov    %rbp,%rsp
   67f:   5d                      pop    %rbp

Teach objtool about this new code sequence.

Reported-and-test-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/fce88ce81c356eedcae7f00ed349cfaddb3363cc.1521741586.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
3 years agonet/mlx5e: Sync netdev vxlan ports at open
Shahar Klein [Tue, 20 Mar 2018 12:44:40 +0000 (14:44 +0200)]
net/mlx5e: Sync netdev vxlan ports at open

When mlx5_core is loaded it is expected to sync ports
with all vxlan devices so it can support vxlan encap/decap.
This is done via udp_tunnel_get_rx_info(). Currently this
call is set in mlx5e_nic_enable() and if the netdev is not in
NETREG_REGISTERED state it will not be called.

Normally on load the netdev state is not NETREG_REGISTERED
so udp_tunnel_get_rx_info() will not be called.

Moving udp_tunnel_get_rx_info() to mlx5e_open() so
it will be called on netdev UP event and allow encap/decap.

Fixes: 610e89e05c3f ("net/mlx5e: Don't sync netdev state when not registered")
Signed-off-by: Shahar Klein <shahark@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet/mlx5e: Avoid using the ipv6 stub in the TC offload neigh update path
Or Gerlitz [Tue, 13 Mar 2018 19:43:43 +0000 (21:43 +0200)]
net/mlx5e: Avoid using the ipv6 stub in the TC offload neigh update path

Currently we use the global ipv6_stub var to access the ipv6 global
nd table. This practice gets us to troubles when the stub is only partially
set e.g when ipv6 is loaded under the disabled policy. In this case, as of commit
343d60aada5a ("ipv6: change ipv6_stub_impl.ipv6_dst_lookup to take net argument")
the stub is not null, but stub->nd_tbl is and we crash.

As we can access the ipv6 nd_tbl directly, the fix is just to avoid the
reference through the stub. There is one place in the code where we
issue ipv6 route lookup and keep doing it through the stub, but that
mentioned commit makes sure we get -EAFNOSUPPORT from the stack.

Fixes: 232c001398ae ("net/mlx5e: Add support to neighbour update flow")
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Aviv Heller <avivh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet/mlx5e: Fix memory usage issues in offloading TC flows
Jianbo Liu [Thu, 8 Mar 2018 09:20:55 +0000 (09:20 +0000)]
net/mlx5e: Fix memory usage issues in offloading TC flows

For NIC flows, the parsed attributes are not freed when we exit
successfully from mlx5e_configure_flower().

There is possible double free for eswitch flows. If error is returned
from rhashtable_insert_fast(), the parse attrs will be freed in
mlx5e_tc_del_flow(), but they will be freed again before exiting
mlx5e_configure_flower().

To fix both issues we do the following:
(1) change the condition that determines if to issue the free call to
    check if this flow is NIC flow, or it does not have encap action.
(2) reorder the code such that that the check and free calls are done
    before we attempt to add into the hash table.

Fixes: 232c001398ae ('net/mlx5e: Add support to neighbour update flow')
Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet/mlx5e: Fix traffic being dropped on VF representor
Roi Dayan [Wed, 28 Feb 2018 10:56:42 +0000 (12:56 +0200)]
net/mlx5e: Fix traffic being dropped on VF representor

Increase representor netdev RQ size to avoid dropped packets.
The current size (two) is just too small to keep up with
conventional slow path traffic patterns.
Also match the SQ size to the RQ size.

Fixes: cb67b832921c ("net/mlx5e: Introduce SRIOV VF representors")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet/mlx5e: Verify coalescing parameters in range
Moshe Shemesh [Thu, 15 Feb 2018 10:41:48 +0000 (12:41 +0200)]
net/mlx5e: Verify coalescing parameters in range

Add check of coalescing parameters received through ethtool are within
range of values supported by the HW.
Driver gets the coalescing rx/tx-usecs and rx/tx-frames as set by the
users through ethtool. The ethtool support up to 32 bit value for each.
However, mlx5 modify cq limits the coalescing time parameter to 12 bit
and coalescing frames parameters to 16 bits.
Return out of range error if user tries to set these parameters to
higher values.

Fixes: f62b8bb8f2d3 ('net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality')
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet/mlx5: Make eswitch support to depend on switchdev
Or Gerlitz [Thu, 15 Feb 2018 10:39:55 +0000 (12:39 +0200)]
net/mlx5: Make eswitch support to depend on switchdev

Add dependancy for switchdev to be congfigured as any user-space control
plane SW is expected to use the HW switchdev ID to locate the representors
related to VFs of a certain PF and apply SW/offloaded switching on them.

Fixes: e80541ecabd5 ('net/mlx5: Add CONFIG_MLX5_ESWITCH Kconfig')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet/mlx5e: Use 32 bits to store VF representor SQ number
Or Gerlitz [Tue, 13 Feb 2018 11:43:39 +0000 (13:43 +0200)]
net/mlx5e: Use 32 bits to store VF representor SQ number

SQs are 32 and not 16 bits, hence it's wrong to use only 16 bits to
store the sq number for which are going to set steering rule, fix that.

Fixes: cb67b832921c ('net/mlx5e: Introduce SRIOV VF representors')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet/mlx5e: Don't override vport admin link state in switchdev mode
Jianbo Liu [Fri, 2 Mar 2018 02:09:08 +0000 (02:09 +0000)]
net/mlx5e: Don't override vport admin link state in switchdev mode

The vport admin original link state will be re-applied after returning
back to legacy mode, it is not right to change the admin link state value
when in switchdev mode.

Use direct vport commands to alter logical vport state in netdev
representor open/close flows rather than the administrative eswitch API.

Fixes: 20a1ea674783 ('net/mlx5e: Support VF vport link state control for SRIOV switchdev mode')
Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
3 years agonet: dsa: mt7530: fix module autoloading for OF platform drivers
Sean Wang [Mon, 26 Mar 2018 10:07:10 +0000 (18:07 +0800)]
net: dsa: mt7530: fix module autoloading for OF platform drivers

It's required to create a modules.alias via MODULE_DEVICE_TABLE helper
for the OF platform driver. Otherwise, module autoloading cannot work.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>