muen/linux.git
3 years agoMerge tag 'spi-fix-v4.19-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Mon, 17 Sep 2018 20:34:25 +0000 (22:34 +0200)]
Merge tag 'spi-fix-v4.19-rc4' of https://git./linux/kernel/git/broonie/spi

Mark writes:
  "spi: Fixes for v4.19

  As well as one driver fix there's a couple of fixes here which address
  issues with the use of IDRs for allocation of dynamic bus numbers,
  ensuring that dynamic bus numbers interact well with static bus numbers
  assigned via DT and otherwise."

* tag 'spi-fix-v4.19-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: spi-fsl-dspi: fix broken DSPI_EOQ_MODE
  spi: Fix double IDR allocation with DT aliases
  spi: fix IDR collision on systems with both fixed and dynamic SPI bus numbers

3 years agoMerge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Mon, 17 Sep 2018 07:13:47 +0000 (09:13 +0200)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4

Ted writes:
Various ext4 bug fixes; primarily making ext4 more robust against
maliciously crafted file systems, and some DAX fixes.

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4, dax: set ext4_dax_aops for dax files
  ext4, dax: add ext4_bmap to ext4_dax_aops
  ext4: don't mark mmp buffer head dirty
  ext4: show test_dummy_encryption mount option in /proc/mounts
  ext4: close race between direct IO and ext4_break_layouts()
  ext4: fix online resizing for bigalloc file systems with a 1k block size
  ext4: fix online resize's handling of a too-small final block group
  ext4: recalucate superblock checksum after updating free blocks/inodes
  ext4: avoid arithemetic overflow that can trigger a BUG
  ext4: avoid divide by zero fault when deleting corrupted inline directories
  ext4: check to make sure the rename(2)'s destination is not freed
  ext4: add nonstring annotations to ext4.h

3 years agoMerge tag 'linux-kselftest-4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel...
Greg Kroah-Hartman [Mon, 17 Sep 2018 05:24:28 +0000 (07:24 +0200)]
Merge tag 'linux-kselftest-4.19-rc5' of git://git./linux/kernel/git/shuah/linux-kselftest

Pulled kselftest fixes from Shuah:
 "This Kselftest fixes update for 4.9-rc5 consists of:

  -- fixes to build failures
  -- fixes to add missing config files to increase test coverage
  -- fixes to cgroup test and a new cgroup test for memory.oom.group"

3 years agoLinux 4.19-rc4 v4.19-rc4
Linus Torvalds [Sun, 16 Sep 2018 18:52:37 +0000 (11:52 -0700)]
Linux 4.19-rc4

3 years agoCode of Conduct: Let's revamp it.
Greg Kroah-Hartman [Sat, 15 Sep 2018 18:26:44 +0000 (20:26 +0200)]
Code of Conduct: Let's revamp it.

The Code of Conflict is not achieving its implicit goal of fostering
civility and the spirit of 'be excellent to each other'.  Explicit
guidelines have demonstrated success in other projects and other areas
of the kernel.

Here is a Code of Conduct statement for the wider kernel.  It is based
on the Contributor Covenant as described at www.contributor-covenant.org

From this point forward, we should abide by these rules in order to help
make the kernel community a welcoming environment to participate in.

Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Olof Johansson <olof@lxom.net>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoext4, dax: set ext4_dax_aops for dax files
Toshi Kani [Sun, 16 Sep 2018 01:37:59 +0000 (21:37 -0400)]
ext4, dax: set ext4_dax_aops for dax files

Sync syscall to DAX file needs to flush processor cache, but it
currently does not flush to existing DAX files.  This is because
'ext4_da_aops' is set to address_space_operations of existing DAX
files, instead of 'ext4_dax_aops', since S_DAX flag is set after
ext4_set_aops() in the open path.

  New file
  --------
  lookup_open
    ext4_create
      __ext4_new_inode
        ext4_set_inode_flags   // Set S_DAX flag
      ext4_set_aops            // Set aops to ext4_dax_aops

  Existing file
  -------------
  lookup_open
    ext4_lookup
      ext4_iget
        ext4_set_aops          // Set aops to ext4_da_aops
        ext4_set_inode_flags   // Set S_DAX flag

Change ext4_iget() to initialize i_flags before ext4_set_aops().

Fixes: 5f0663bb4a64 ("ext4, dax: introduce ext4_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
3 years agoext4, dax: add ext4_bmap to ext4_dax_aops
Toshi Kani [Sun, 16 Sep 2018 01:23:41 +0000 (21:23 -0400)]
ext4, dax: add ext4_bmap to ext4_dax_aops

Ext4 mount path calls .bmap to the journal inode. This currently
works for the DAX mount case because ext4_iget() always set
'ext4_da_aops' to any regular files.

In preparation to fix ext4_iget() to set 'ext4_dax_aops' for ext4
DAX files, add ext4_bmap() to 'ext4_dax_aops', since bmap works for
DAX inodes.

Fixes: 5f0663bb4a64 ("ext4, dax: introduce ext4_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Suggested-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
3 years agoext4: don't mark mmp buffer head dirty
Li Dongyang [Sat, 15 Sep 2018 21:11:25 +0000 (17:11 -0400)]
ext4: don't mark mmp buffer head dirty

Marking mmp bh dirty before writing it will make writeback
pick up mmp block later and submit a write, we don't want the
duplicate write as kmmpd thread should have full control of
reading and writing the mmp block.
Another reason is we will also have random I/O error on
the writeback request when blk integrity is enabled, because
kmmpd could modify the content of the mmp block(e.g. setting
new seq and time) while the mmp block is under I/O requested
by writeback.

Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@vger.kernel.org
3 years agoext4: show test_dummy_encryption mount option in /proc/mounts
Eric Biggers [Sat, 15 Sep 2018 18:28:26 +0000 (14:28 -0400)]
ext4: show test_dummy_encryption mount option in /proc/mounts

When in effect, add "test_dummy_encryption" to _ext4_show_options() so
that it is shown in /proc/mounts and other relevant procfs files.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
3 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 18:02:46 +0000 (08:02 -1000)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingol Molnar:
 "Misc fixes:

   - EFI crash fix

   - Xen PV fixes

   - do not allow PTI on 2-level 32-bit kernels for now

   - documentation fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/APM: Fix build warning when PROC_FS is not enabled
  Revert "x86/mm/legacy: Populate the user page-table with user pgd's"
  x86/efi: Load fixmap GDT in efi_call_phys_epilog() before setting %cr3
  x86/xen: Disable CPU0 hotplug for Xen PV
  x86/EISA: Don't probe EISA bus for Xen PV guests
  x86/doc: Fix Documentation/x86/earlyprintk.txt

3 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 18:00:37 +0000 (08:00 -1000)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixes: various scheduler metrics corner case fixes, a
  sched_features deadlock fix, and a topology fix for certain NUMA
  systems"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Fix kernel-doc notation warning
  sched/fair: Fix load_balance redo for !imbalance
  sched/fair: Fix scale_rt_capacity() for SMT
  sched/fair: Fix vruntime_normalized() for remote non-migration wakeup
  sched/pelt: Fix update_blocked_averages() for RT and DL classes
  sched/topology: Set correct NUMA topology type
  sched/debug: Fix potential deadlock when writing to sched_features

3 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 16:44:32 +0000 (06:44 -1000)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, but also breakpoint and x86 PMU driver fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  perf tools: Fix maps__find_symbol_by_name()
  tools headers uapi: Update tools's copy of linux/if_link.h
  tools headers uapi: Update tools's copy of linux/vhost.h
  tools headers uapi: Update tools's copies of kvm headers
  tools headers uapi: Update tools's copy of drm/drm.h
  tools headers uapi: Update tools's copy of asm-generic/unistd.h
  tools headers uapi: Update tools's copy of linux/perf_event.h
  perf/core: Force USER_DS when recording user stack data
  perf/UAPI: Clearly mark __PERF_SAMPLE_CALLCHAIN_EARLY as internal use
  perf/x86/intel: Add support/quirk for the MISPREDICT bit on Knights Landing CPUs
  perf annotate: Fix parsing aarch64 branch instructions after objdump update
  perf probe powerpc: Ignore SyS symbols irrespective of endianness
  perf event-parse: Use fixed size string for comms
  perf util: Fix bad memory access in trace info.
  perf tools: Streamline bpf examples and headers installation
  perf evsel: Fix potential null pointer dereference in perf_evsel__new_idx()
  perf arm64: Fix include path for asm-generic/unistd.h
  perf/hw_breakpoint: Simplify breakpoint enable in perf_event_modify_breakpoint
  perf/hw_breakpoint: Enable breakpoint in modify_user_hw_breakpoint
  perf/hw_breakpoint: Remove superfluous bp->attr.disabled = 0
  ...

3 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Sep 2018 16:39:09 +0000 (06:39 -1000)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:
 "Misc fixes: liblockdep fixes and ww_mutex fixes"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/ww_mutex: Fix spelling mistake "cylic" -> "cyclic"
  locking/lockdep: Delete unnecessary #include
  tools/lib/lockdep: Add dummy task_struct state member
  tools/lib/lockdep: Add empty nmi.h
  tools/lib/lockdep: Update Sasha Levin email to MSFT
  jump_label: Fix typo in warning message
  locking/mutex: Fix mutex debug call and ww_mutex documentation

3 years agox86/APM: Fix build warning when PROC_FS is not enabled
Randy Dunlap [Fri, 14 Sep 2018 22:10:29 +0000 (15:10 -0700)]
x86/APM: Fix build warning when PROC_FS is not enabled

Fix build warning in apm_32.c when CONFIG_PROC_FS is not enabled:

../arch/x86/kernel/apm_32.c:1643:12: warning: 'proc_apm_show' defined but not used [-Wunused-function]
 static int proc_apm_show(struct seq_file *m, void *v)

Fixes: 3f3942aca6da ("proc: introduce proc_create_single{,_data}")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Jiri Kosina <jikos@kernel.org>
Link: https://lkml.kernel.org/r/be39ac12-44c2-4715-247f-4dcc3c525b8b@infradead.org
3 years agoMerge tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 15 Sep 2018 05:33:42 +0000 (19:33 -1000)]
Merge tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Fixes for four CIFS/SMB3 potential pointer overflow issues, one minor
  build fix, and a build warning cleanup"

* tag '4.19-rc3-smb3-cifs' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: read overflow in is_valid_oplock_break()
  cifs: integer overflow in in SMB2_ioctl()
  CIFS: fix wrapping bugs in num_entries()
  cifs: prevent integer overflow in nxt_dir_entry()
  fs/cifs: require sha512
  fs/cifs: suppress a string overflow warning

3 years agoMerge tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Sat, 15 Sep 2018 05:25:28 +0000 (19:25 -1000)]
Merge tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client bugfixes from Anna Schumaker:
 "These are a handful of fixes for problems that Trond found. Patch #1
  and #3 have the same name, a second issue was found after applying the
  first patch.

  Stable bugfixes:
   - v4.17+: Fix tracepoint Oops in initiate_file_draining()
   - v4.11+: Fix an infinite loop on I/O

  Other fixes:
   - Return errors if a waiting layoutget is killed
   - Don't open code clearing of delegation state"

* tag 'nfs-for-4.19-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFS: Don't open code clearing of delegation state
  NFSv4.1 fix infinite loop on I/O.
  NFSv4: Fix a tracepoint Oops in initiate_file_draining()
  pNFS: Ensure we return the error if someone kills a waiting layoutget
  NFSv4: Fix a tracepoint Oops in initiate_file_draining()

3 years agoMerge tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Sat, 15 Sep 2018 03:31:02 +0000 (17:31 -1000)]
Merge tag 'trace-v4.19-rc3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "This fixes an issue with the build system caused by a change that
  modifies CC_FLAGS_FTRACE. The issue is that it breaks the dependencies
  and causes "make targz-pkg" to rebuild the entire world"

* tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/Makefile: Fix handling redefinition of CC_FLAGS_FTRACE

3 years agoMerge tag 'devicetree-fixes-for-4.19-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 14 Sep 2018 23:03:17 +0000 (13:03 -1000)]
Merge tag 'devicetree-fixes-for-4.19-2' of git://git./linux/kernel/git/robh/linux

Pull DeviceTree fix from Rob Herring:
 "One regression for a 20 year old PowerMac:

   - Fix a regression on systems having a DT without any phandles which
     happens on a PowerMac G3"

* tag 'devicetree-fixes-for-4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: fix phandle cache creation for DTs with no phandles

3 years agoMerge tag 'for-linus-4.19c-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 14 Sep 2018 23:01:06 +0000 (13:01 -1000)]
Merge tag 'for-linus-4.19c-rc4-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "This contains some minor cleanups and fixes:

   - a new knob for controlling scrubbing of pages returned by the Xen
     balloon driver to the Xen hypervisor to address a boot performance
     issue seen in large guests booted pre-ballooned

   - a fix of a regression in the gntdev driver which made it impossible
     to use fully virtualized guests (HVM guests) with a 4.19 based dom0

   - a fix in Xen cpu hotplug functionality which could be triggered by
     wrong admin commands (setting number of active vcpus to 0)

  One further note: the patches have all been under test for several
  days in another branch. This branch has been rebased in order to avoid
  merge conflicts"

* tag 'for-linus-4.19c-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/gntdev: fix up blockable calls to mn_invl_range_start
  xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage
  xen: avoid crash in disable_hotplug_cpu
  xen/balloon: add runtime control for scrubbing ballooned out pages
  xen/manage: don't complain about an empty value in control/sysrq node

3 years agoMerge tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa
Linus Torvalds [Fri, 14 Sep 2018 22:56:42 +0000 (12:56 -1000)]
Merge tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa fixes and cleanups from Max Filippov:

 - don't allocate memory in platform_setup as the memory allocator is
   not initialized at that point yet;

 - remove unnecessary ifeq KBUILD_SRC from arch/xtensa/Makefile;

 - enable SG chaining in arch/xtensa/Kconfig.

* tag 'xtensa-20180914' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: enable SG chaining in Kconfig
  xtensa: remove unnecessary KBUILD_SRC ifeq conditional
  xtensa: ISS: don't allocate memory in platform_setup

3 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 14 Sep 2018 22:42:02 +0000 (12:42 -1000)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "The trickle of arm64 fixes continues to come in.

  Nothing that's the end of the world, but we've got a fix for PCI IO
  port accesses, an accidental naked "asm goto" and a fix to the
  vmcoreinfo PT_NOTE merged this time around which we'd like to get
  sorted before it becomes ABI.

   - Fix ioport_map() mapping the wrong physical address for some I/O
     BARs

   - Remove direct use of "asm goto", since some compilers don't like
     that

   - Ensure kimage_voffset is always present in vmcoreinfo PT_NOTE"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  asm-generic: io: Fix ioport_map() for !CONFIG_GENERIC_IOMAP && CONFIG_INDIRECT_PIO
  arm64: kernel: arch_crash_save_vmcoreinfo() should depend on CONFIG_CRASH_CORE
  arm64: jump_label.h: use asm_volatile_goto macro instead of "asm goto"

3 years agoNFS: Don't open code clearing of delegation state
Trond Myklebust [Wed, 5 Sep 2018 18:07:15 +0000 (14:07 -0400)]
NFS: Don't open code clearing of delegation state

Add a helper for the case when the nfs4 open state has been set to use
a delegation stateid, and we want to revert to using the open stateid.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
3 years agoNFSv4.1 fix infinite loop on I/O.
Trond Myklebust [Wed, 5 Sep 2018 18:07:14 +0000 (14:07 -0400)]
NFSv4.1 fix infinite loop on I/O.

The previous fix broke recovery of delegated stateids because it assumes
that if we did not mark the delegation as suspect, then the delegation has
effectively been revoked, and so it removes that delegation irrespectively
of whether or not it is valid and still in use. While this is "mostly
harmless" for ordinary I/O, we've seen pNFS fail with LAYOUTGET spinning
in an infinite loop while complaining that we're using an invalid stateid
(in this case the all-zero stateid).

What we rather want to do here is ensure that the delegation is always
correctly marked as needing testing when that is the case. So we want
to close the loophole offered by nfs4_schedule_stateid_recovery(),
which marks the state as needing to be reclaimed, but not the
delegation that may be backing it.

Fixes: 0e3d3e5df07dc ("NFSv4.1 fix infinite loop on IO BAD_STATEID error")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
3 years agoNFSv4: Fix a tracepoint Oops in initiate_file_draining()
Trond Myklebust [Wed, 5 Sep 2018 18:07:13 +0000 (14:07 -0400)]
NFSv4: Fix a tracepoint Oops in initiate_file_draining()

Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to
change the test in the tracepoint.

Fixes: ce5624f7e6675 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
3 years agopNFS: Ensure we return the error if someone kills a waiting layoutget
Trond Myklebust [Wed, 5 Sep 2018 18:07:12 +0000 (14:07 -0400)]
pNFS: Ensure we return the error if someone kills a waiting layoutget

If someone interrupts a wait on one or more outstanding layoutgets in
pnfs_update_layout() then return the ERESTARTSYS/EINTR error.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
3 years agoNFSv4: Fix a tracepoint Oops in initiate_file_draining()
Trond Myklebust [Thu, 23 Aug 2018 15:02:49 +0000 (11:02 -0400)]
NFSv4: Fix a tracepoint Oops in initiate_file_draining()

Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to
change the test in the tracepoint.

Fixes: ce5624f7e6675 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.17+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
3 years agoMerge tag 'dmaengine-fix-4.19-rc4' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 14 Sep 2018 16:08:40 +0000 (06:08 -1000)]
Merge tag 'dmaengine-fix-4.19-rc4' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fix from Vinod Koul:
 "Fix the mic_x100_dma driver to use devm_kzalloc for driver memory, so
  that it is freed properly when it unregisters from dmaengine using
  managed API"

* tag 'dmaengine-fix-4.19-rc4' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: mic_x100_dma: use devm_kzalloc to fix an issue

3 years agoMerge tag 'usb-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Fri, 14 Sep 2018 15:59:48 +0000 (05:59 -1000)]
Merge tag 'usb-4.19-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of small USB driver fixes for -rc4.

  The usual suspects of gadget, xhci, and dwc2/3 are in here, along with
  some reverts of reported problem changes, and a number of build
  documentation warning fixes. Full details are in the shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (28 commits)
  Revert "cdc-acm: implement put_char() and flush_chars()"
  usb: Change usb_of_get_companion_dev() place to usb/common
  usb: xhci: fix interrupt transfer error happened on MTK platforms
  usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()
  usb: misc: uss720: Fix two sleep-in-atomic-context bugs
  usb: host: u132-hcd: Fix a sleep-in-atomic-context bug in u132_get_frame()
  usb: Avoid use-after-free by flushing endpoints early in usb_set_interface()
  linux/mod_devicetable.h: fix kernel-doc missing notation for typec_device_id
  usb/typec: fix kernel-doc notation warning for typec_match_altmode
  usb: Don't die twice if PCI xhci host is not responding in resume
  usb: mtu3: fix error of xhci port id when enable U3 dual role
  usb: uas: add support for more quirk flags
  USB: Add quirk to support DJI CineSSD
  usb: typec: fix kernel-doc parameter warning
  usb/dwc3/gadget: fix kernel-doc parameter warning
  USB: yurex: Check for truncation in yurex_read()
  USB: yurex: Fix buffer over-read in yurex_write()
  usb: host: xhci-plat: Iterate over parent nodes for finding quirks
  xhci: Fix use after free for URB cancellation on a reallocated endpoint
  USB: add quirk for WORLDE Controller KS49 or Prodipe MIDI 49C USB controller
  ...

3 years agoMerge tag 'tty-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Fri, 14 Sep 2018 15:58:12 +0000 (05:58 -1000)]
Merge tag 'tty-4.19-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull tty fixes from Greg KH:
 "Here are three small HVC tty driver fixes to resolve a reported
  regression from 4.19-rc1.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: hvc: hvc_write() fix break condition
  tty: hvc: hvc_poll() fix read loop batching
  tty: hvc: hvc_poll() fix read loop hang

3 years agoMerge tag 'staging-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 14 Sep 2018 15:43:43 +0000 (05:43 -1000)]
Merge tag 'staging-4.19-rc4' of git://git./linux/kernel/git/gregkh/staging

Pull staging/IIO driver fixes from Greg KH:
 "Here are a few small staging and iio driver fixes for -rc4.

  Nothing major, just a few small bugfixes for some reported issues, and
  a MAINTAINERS file update for the fbtft drivers.

  We also re-enable the building of the erofs filesystem as the XArray
  patches that were causing it to break never got merged in the -rc1
  cycle, so there's no reason it can't be turned back on for now. The
  problem that was previously there is now being handled in the Xarray
  tree at the moment, so it will not hit us again in the future.

  All of these patches have been in linux-next with no reported issues"

* tag 'staging-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: vboxvideo: Change address of scanout buffer on page-flip
  staging: vboxvideo: Fix IRQs no longer working
  staging: gasket: TODO: re-implement using UIO
  staging/fbtft: Update TODO and mailing lists
  staging: erofs: rename superblock flags (MS_xyz -> SB_xyz)
  iio: imu: st_lsm6dsx: take into account ts samples in wm configuration
  Revert "iio: temperature: maxim_thermocouple: add MAX31856 part"
  Revert "staging: erofs: disable compiling temporarile"
  MAINTAINERS: Switch a maintainer for drivers/staging/gasket
  staging: wilc1000: revert "fix TODO to compile spi and sdio components in single module"

3 years agoMerge tag 'char-misc-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Fri, 14 Sep 2018 15:40:13 +0000 (05:40 -1000)]
Merge tag 'char-misc-4.19-rc4' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are a small handful of char/misc driver fixes for 4.19-rc4.

  All of them are simple, resolving reported problems in a few drivers.
  Full details are in the shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  firmware: Fix security issue with request_firmware_into_buf()
  vmbus: don't return values for uninitalized channels
  fpga: dfl: fme: fix return value check in in pr_mgmt_init()
  misc: hmc6352: fix potential Spectre v1
  Tools: hv: Fix a bug in the key delete code
  misc: ibmvsm: Fix wrong assignment of return code
  android: binder: fix the race mmap and alloc_new_buf_locked
  mei: bus: need to unlink client before freeing
  mei: bus: fix hw module get/put balance
  mei: fix use-after-free in mei_cl_write
  mei: ignore not found client in the enumeration

3 years agoRevert "x86/mm/legacy: Populate the user page-table with user pgd's"
Joerg Roedel [Fri, 14 Sep 2018 10:59:14 +0000 (12:59 +0200)]
Revert "x86/mm/legacy: Populate the user page-table with user pgd's"

This reverts commit 1f40a46cf47c12d93a5ad9dccd82bd36ff8f956a.

It turned out that this patch is not sufficient to enable PTI on 32 bit
systems with legacy 2-level page-tables. In this paging mode the huge-page
PTEs are in the top-level page-table directory, where also the mirroring to
the user-space page-table happens. So every huge PTE exits twice, in the
kernel and in the user page-table.

That means that accessed/dirty bits need to be fetched from two PTEs in
this mode to be safe, but this is not trivial to implement because it needs
changes to generic code just for the sake of enabling PTI with 32-bit
legacy paging. As all systems that need PTI should support PAE anyway,
remove support for PTI when 32-bit legacy paging is used.

Fixes: 7757d607c6b3 ('x86/pti: Allow CONFIG_PAGE_TABLE_ISOLATION for x86_32')
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: hpa@zytor.com
Cc: linux-mm@kvack.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Link: https://lkml.kernel.org/r/1536922754-31379-1-git-send-email-joro@8bytes.org
3 years agoxen/gntdev: fix up blockable calls to mn_invl_range_start
Michal Hocko [Tue, 4 Sep 2018 23:21:39 +0000 (09:21 +1000)]
xen/gntdev: fix up blockable calls to mn_invl_range_start

Patch series "mmu_notifiers follow ups".

Tetsuo has noticed some fallouts from 93065ac753e4 ("mm, oom: distinguish
blockable mode for mmu notifiers").  One of them has been fixed and picked
up by AMD/DRM maintainer [1].  XEN issue is fixed by patch 1.  I have also
clarified expectations about blockable semantic of invalidate_range_end.
Finally the last patch removes MMU_INVALIDATE_DOES_NOT_BLOCK which is no
longer used nor needed.

[1] http://lkml.kernel.org/r/20180824135257.GU29735@dhcp22.suse.cz

This patch (of 3):

93065ac753e4 ("mm, oom: distinguish blockable mode for mmu notifiers") has
introduced blockable parameter to all mmu_notifiers and the notifier has
to back off when called in !blockable case and it could block down the
road.

The above commit implemented that for mn_invl_range_start but both
in_range checks are done unconditionally regardless of the blockable mode
and as such they would fail all the time for regular calls.  Fix this by
checking blockable parameter as well.

Once we are there we can remove the stale TODO.  The lock has to be
sleepable because we wait for completion down in gnttab_unmap_refs_sync.

Link: http://lkml.kernel.org/r/20180827112623.8992-2-mhocko@kernel.org
Fixes: 93065ac753e4 ("mm, oom: distinguish blockable mode for mmu notifiers")
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
3 years agoxen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage
Josh Abraham [Thu, 13 Sep 2018 01:13:54 +0000 (15:13 -1000)]
xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage

This patch removes duplicate macro useage in events_base.c.

It also fixes gcc warning:
variable ‘col’ set but not used [-Wunused-but-set-variable]

Signed-off-by: Joshua Abraham <j.abraham1776@gmail.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
3 years agoxen: avoid crash in disable_hotplug_cpu
Olaf Hering [Fri, 7 Sep 2018 14:31:35 +0000 (16:31 +0200)]
xen: avoid crash in disable_hotplug_cpu

The command 'xl vcpu-set 0 0', issued in dom0, will crash dom0:

BUG: unable to handle kernel NULL pointer dereference at 00000000000002d8
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 7 PID: 65 Comm: xenwatch Not tainted 4.19.0-rc2-1.ga9462db-default #1 openSUSE Tumbleweed (unreleased)
Hardware name: Intel Corporation S5520UR/S5520UR, BIOS S5500.86B.01.00.0050.050620101605 05/06/2010
RIP: e030:device_offline+0x9/0xb0
Code: 77 24 00 e9 ce fe ff ff 48 8b 13 e9 68 ff ff ff 48 8b 13 e9 29 ff ff ff 48 8b 13 e9 ea fe ff ff 90 66 66 66 66 90 41 54 55 53 <f6> 87 d8 02 00 00 01 0f 85 88 00 00 00 48 c7 c2 20 09 60 81 31 f6
RSP: e02b:ffffc90040f27e80 EFLAGS: 00010203
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8801f3800000 RSI: ffffc90040f27e70 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff820e47b3 R09: 0000000000000000
R10: 0000000000007ff0 R11: 0000000000000000 R12: ffffffff822e6d30
R13: dead000000000200 R14: dead000000000100 R15: ffffffff8158b4e0
FS:  00007ffa595158c0(0000) GS:ffff8801f39c0000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000002d8 CR3: 00000001d9602000 CR4: 0000000000002660
Call Trace:
 handle_vcpu_hotplug_event+0xb5/0xc0
 xenwatch_thread+0x80/0x140
 ? wait_woken+0x80/0x80
 kthread+0x112/0x130
 ? kthread_create_worker_on_cpu+0x40/0x40
 ret_from_fork+0x3a/0x50

This happens because handle_vcpu_hotplug_event is called twice. In the
first iteration cpu_present is still true, in the second iteration
cpu_present is false which causes get_cpu_device to return NULL.
In case of cpu#0, cpu_online is apparently always true.

Fix this crash by checking if the cpu can be hotplugged, which is false
for a cpu that was just removed.

Also check if the cpu was actually offlined by device_remove, otherwise
leave the cpu_present state as it is.

Rearrange to code to do all work with device_hotplug_lock held.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
3 years agoxen/balloon: add runtime control for scrubbing ballooned out pages
Marek Marczykowski-Górecki [Fri, 7 Sep 2018 16:49:08 +0000 (18:49 +0200)]
xen/balloon: add runtime control for scrubbing ballooned out pages

Scrubbing pages on initial balloon down can take some time, especially
in nested virtualization case (nested EPT is slow). When HVM/PVH guest is
started with memory= significantly lower than maxmem=, all the extra
pages will be scrubbed before returning to Xen. But since most of them
weren't used at all at that point, Xen needs to populate them first
(from populate-on-demand pool). In nested virt case (Xen inside KVM)
this slows down the guest boot by 15-30s with just 1.5GB needed to be
returned to Xen.

Add runtime parameter to enable/disable it, to allow initially disabling
scrubbing, then enable it back during boot (for example in initramfs).
Such usage relies on assumption that a) most pages ballooned out during
initial boot weren't used at all, and b) even if they were, very few
secrets are in the guest at that time (before any serious userspace
kicks in).
Convert CONFIG_XEN_SCRUB_PAGES to CONFIG_XEN_SCRUB_PAGES_DEFAULT (also
enabled by default), controlling default value for the new runtime
switch.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
3 years agoxen/manage: don't complain about an empty value in control/sysrq node
Vitaly Kuznetsov [Thu, 6 Sep 2018 11:26:08 +0000 (13:26 +0200)]
xen/manage: don't complain about an empty value in control/sysrq node

When guest receives a sysrq request from the host it acknowledges it by
writing '\0' to control/sysrq xenstore node. This, however, make xenstore
watch fire again but xenbus_scanf() fails to parse empty value with "%c"
format string:

 sysrq: SysRq : Emergency Sync
 Emergency Sync complete
 xen:manage: Error -34 reading sysrq code in control/sysrq

Ignore -ERANGE the same way we already ignore -ENOENT, empty value in
control/sysrq is totally legal.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
3 years agoasm-generic: io: Fix ioport_map() for !CONFIG_GENERIC_IOMAP && CONFIG_INDIRECT_PIO
Andrew Murray [Thu, 13 Sep 2018 12:48:27 +0000 (13:48 +0100)]
asm-generic: io: Fix ioport_map() for !CONFIG_GENERIC_IOMAP && CONFIG_INDIRECT_PIO

The !CONFIG_GENERIC_IOMAP version of ioport_map uses MMIO_UPPER_LIMIT to
prevent users from making I/O accesses outside the expected I/O range -
however it erroneously treats MMIO_UPPER_LIMIT as a mask which is
contradictory to its other users.

The introduction of CONFIG_INDIRECT_PIO, which subtracts an arbitrary
amount from IO_SPACE_LIMIT to form MMIO_UPPER_LIMIT, results in ioport_map
mangling the given port rather than capping it.

We address this by aligning more closely with the CONFIG_GENERIC_IOMAP
implementation of ioport_map by using the comparison operator and
returning NULL where the port exceeds MMIO_UPPER_LIMIT. Though note that
we preserve the existing behavior of masking with IO_SPACE_LIMIT such that
we don't break existing buggy drivers that somehow rely on this masking.

Fixes: 5745392e0c2b ("PCI: Apply the new generic I/O management on PCI IO hosts")
Reported-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
3 years agoMerge tag 'printk-for-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 14 Sep 2018 05:37:08 +0000 (19:37 -1000)]
Merge tag 'printk-for-4.19-rc4' of git://git./linux/kernel/git/pmladek/printk

Pull printk fix from Petr Mladek:
 "Revert a commit that caused "quiet", "debug", and "loglevel" early
  parameters to be ignored for early boot messages"

* tag 'printk-for-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk:
  Revert "printk: make sure to print log on console."

3 years agoMerge tag 'ovl-fixes-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...
Linus Torvalds [Fri, 14 Sep 2018 05:21:40 +0000 (19:21 -1000)]
Merge tag 'ovl-fixes-4.19-rc4' of git://git./linux/kernel/git/mszeredi/vfs

Pull overlayfs fixes from Miklos Szeredi:
 "This fixes a regression in the recent file stacking update, reported
  and fixed by Amir Goldstein. The fix is fairly trivial, but involves
  adding a fadvise() f_op and the associated churn in the vfs. As
  discussed on -fsdevel, there are other possible uses for this method,
  than allowing proper stacking for overlays.

  And there's one other fix for a syzkaller detected oops"

* tag 'ovl-fixes-4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: fix oopses in ovl_fill_super() failure paths
  ovl: add ovl_fadvise()
  vfs: implement readahead(2) using POSIX_FADV_WILLNEED
  vfs: add the fadvise() file operation
  Documentation/filesystems: update documentation of file_operations
  ovl: fix GPF in swapfile_activate of file from overlayfs over xfs
  ovl: respect FIEMAP_FLAG_SYNC flag

3 years agoMerge tag 'for-linus-20180913' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 14 Sep 2018 05:16:11 +0000 (19:16 -1000)]
Merge tag 'for-linus-20180913' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Three fixes that should go into this series. This contains:

   - Increase number of policies supported by blk-cgroup.

     With blk-iolatency, we now have four in kernel, but we had a hard
     limit of three...

   - Fix regression in null_blk, where the zoned supported broke
     queue_mode=0 (bio based).

   - NVMe pull request, with a single fix for an issue in the rdma code"

* tag 'for-linus-20180913' of git://git.kernel.dk/linux-block:
  null_blk: fix zoned support for non-rq based operation
  blk-cgroup: increase number of supported policies
  nvmet-rdma: fix possible bogus dereference under heavy load

3 years agoMerge tag 'for-4.19/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Fri, 14 Sep 2018 05:12:55 +0000 (19:12 -1000)]
Merge tag 'for-4.19/dm-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - DM verity fix for crash due to using vmalloc'd buffers with the
   asynchronous crypto hadsh API.

 - Fix to both DM crypt and DM integrity targets to discontinue using
   CRYPTO_TFM_REQ_MAY_SLEEP because its use of GFP_KERNEL can lead to
   deadlock by recursing back into a filesystem.

 - Various DM raid fixes related to reshape and rebuild races.

 - Fix for DM thin-provisioning to avoid data corruption that was a
   side-effect of needing to abort DM thin metadata transaction due to
   running out of metadata space. Fix is to reserve a small amount of
   metadata space so that once it is used the DM thin-pool can finish
   its active transaction before switching to read-only mode.

* tag 'for-4.19/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm thin metadata: try to avoid ever aborting transactions
  dm raid: bump target version, update comments and documentation
  dm raid: fix RAID leg rebuild errors
  dm raid: fix rebuild of specific devices by updating superblock
  dm raid: fix stripe adding reshape deadlock
  dm raid: fix reshape race on small devices
  dm: disable CRYPTO_TFM_REQ_MAY_SLEEP to fix a GFP_KERNEL recursion deadlock
  dm verity: fix crash on bufio buffer that was allocated with vmalloc

3 years agoMerge tag 'drm-fixes-2018-09-14' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 14 Sep 2018 04:54:47 +0000 (18:54 -1000)]
Merge tag 'drm-fixes-2018-09-14' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This is the general drm fixes pull for rc4.

  i915:
   - Two GVT fixes (one for the mm reference issue you pointed out)
   - Gen 2 video playback fix
   - IPS timeout error suppression on Broadwell

  amdgpu:
   - Small memory leak
   - SR-IOV reset
   - locking fix
   - updated SDMA golden registers

  nouveau:
   - Remove some leftover debugging"

* tag 'drm-fixes-2018-09-14' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/devinit: fix warning when PMU/PRE_OS is missing
  drm/amdgpu: fix error handling in amdgpu_cs_user_fence_chunk
  drm/i915/overlay: Allocate physical registers from stolen
  drm/amdgpu: move PSP init prior to IH in gpu reset
  drm/amdgpu: Fix SDMA hang in prt mode v2
  drm/amdgpu: fix amdgpu_mn_unlock() in the CS error path
  drm/i915/bdw: Increase IPS disable timeout to 100ms
  drm/i915/gvt: Fix the incorrect length of child_device_config issue
  drm/i915/gvt: Fix life cycle reference on KVM mm

3 years agoMerge tag 'pstore-v4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees...
Linus Torvalds [Fri, 14 Sep 2018 04:52:41 +0000 (18:52 -1000)]
Merge tag 'pstore-v4.19-rc4' of git://git./linux/kernel/git/kees/linux

Pull pstore fix from Kees Cook:
 "This fixes a 6 year old pstore bug that everyone just got lucky in
  avoiding, likely due only using page-aligned persistent ram regions:

   - Handle page-vs-byte offset handling between iomap and vmap (Bin Yang)"

* tag 'pstore-v4.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  pstore: Fix incorrect persistent ram buffer mapping

3 years agoMerge tag 'mmc-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 14 Sep 2018 04:49:23 +0000 (18:49 -1000)]
Merge tag 'mmc-v4.19-rc2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC host fixes from Ulf Hansson:

 - meson-mx-sdio: Fix OF child-node lookup

 - omap_hsmmc: Fix wakeirq handling on removal

* tag 'mmc-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: meson-mx-sdio: fix OF child-node lookup
  mmc: omap_hsmmc: fix wakeirq handling on removal

3 years agoMerge tag 'pinctrl-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Fri, 14 Sep 2018 04:47:45 +0000 (18:47 -1000)]
Merge tag 'pinctrl-v4.19-2' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:

 - A complicated IRQ fix for the MSM driver (see commit)

 - Fix the group/function check in the Ingenic driver

 - Deal with a possible NULL pointer dereference in the Madera driver

* tag 'pinctrl-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: madera: Fix possible NULL pointer with pdata config
  pinctrl: ingenic: Fix group & function error checking
  pinctrl: msm: Really mask level interrupts to prevent latching

3 years agoMerge branch 'for-4.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 14 Sep 2018 02:35:25 +0000 (16:35 -1000)]
Merge branch 'for-4.19-fixes' of git://git./linux/kernel/git/tj/percpu

Pull percpu maintainership update from Tejun Heo:
 "This updates the MAINTAINERS file to transfer the percpu tree
  maintainership to Dennis Zhou.

  Dennis rewrote a good portion of the percpu allocator, knows most of
  percpu related code, is already listed as a co-maintainer, has been
  reliable, and now sits right behind me. I'll keep reviewing and
  involved with percpu stuff and am sure that Dennis will soon make a
  better maintainer than I ever was"

* 'for-4.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  MAINTAINERS: Make Dennis the percpu tree maintainer

3 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux...
Linus Torvalds [Fri, 14 Sep 2018 02:33:26 +0000 (16:33 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/rkuo/linux-hexagon-kernel

Pull hexagon fixes from Richard Kuo:
 "Some fixes for compile warnings"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel:
  hexagon: modify ffs() and fls() to return int
  arch/hexagon: fix kernel/dma.c build warning

3 years agoMerge tag 's390-4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Fri, 14 Sep 2018 02:22:24 +0000 (16:22 -1000)]
Merge tag 's390-4.19-3' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Martin Schwidefsky:

 - One fix for the zcrypt driver to correctly handle incomplete
   encryption/decryption operations.

 - A cleanup for the aqmask/apmask parsing to avoid variable length
   arrays on the stack.

* tag 's390-4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/zcrypt: remove VLA usage from the AP bus
  s390/crypto: Fix return code checking in cbc_paes_crypt()

3 years agomm: get rid of vmacache_flush_all() entirely
Linus Torvalds [Thu, 13 Sep 2018 09:57:48 +0000 (23:57 -1000)]
mm: get rid of vmacache_flush_all() entirely

Jann Horn points out that the vmacache_flush_all() function is not only
potentially expensive, it's buggy too.  It also happens to be entirely
unnecessary, because the sequence number overflow case can be avoided by
simply making the sequence number be 64-bit.  That doesn't even grow the
data structures in question, because the other adjacent fields are
already 64-bit.

So simplify the whole thing by just making the sequence number overflow
case go away entirely, which gets rid of all the complications and makes
the code faster too.  Win-win.

[ Oleg Nesterov points out that the VMACACHE_FULL_FLUSHES statistics
  also just goes away entirely with this ]

Reported-by: Jann Horn <jannh@google.com>
Suggested-by: Will Deacon <will.deacon@arm.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge branch 'linux-4.19' of git://github.com/skeggsb/linux into drm-fixes
Dave Airlie [Thu, 13 Sep 2018 23:38:35 +0000 (09:38 +1000)]
Merge branch 'linux-4.19' of git://github.com/skeggsb/linux into drm-fixes

One more nouveau fix to remove some debug warnings.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <bskeggs@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CABDvA==GF63dy8a9j611=-0x8G6FRu7uC-ZQypsLO_hqV4OAcA@mail.gmail.com
3 years agoMerge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Thu, 13 Sep 2018 23:35:55 +0000 (09:35 +1000)]
Merge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

A few fixes for 4.19:
- Fix a small memory leak
- SR-IOV reset fix
- Fix locking in MMU-notifier error path
- Updated SDMA golden settings to fix a PRT hang

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180912154735.2683-1-alexander.deucher@amd.com
3 years agoMerge tag 'drm-intel-fixes-2018-09-11' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Thu, 13 Sep 2018 23:33:05 +0000 (09:33 +1000)]
Merge tag 'drm-intel-fixes-2018-09-11' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

This contains a regression fix for video playbacks on gen 2 hardware,
a IPS timeout error suppression on Broadwell and GVT bucked with
"Most critical one is to fix KVM's mm reference when we access guest memory,
issue was raised by Linus [1], and another one with virtual opregion fix."

[1] - https://lists.freedesktop.org/archives/intel-gvt-dev/2018-August/004130.html

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180911223229.GA30328@intel.com
3 years agoMAINTAINERS: Make Dennis the percpu tree maintainer
Tejun Heo [Thu, 13 Sep 2018 19:16:36 +0000 (12:16 -0700)]
MAINTAINERS: Make Dennis the percpu tree maintainer

Dennis rewrote a significant portion of the percpu allocator and has
shown that he can respond in a timely and helpful manner when issues
are reported against percpu allocator.

Let's make Dennis the percpu tree maintainer.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
3 years agopstore: Fix incorrect persistent ram buffer mapping
Bin Yang [Wed, 12 Sep 2018 03:36:34 +0000 (03:36 +0000)]
pstore: Fix incorrect persistent ram buffer mapping

persistent_ram_vmap() returns the page start vaddr.
persistent_ram_iomap() supports non-page-aligned mapping.

persistent_ram_buffer_map() always adds offset-in-page to the vaddr
returned from these two functions, which causes incorrect mapping of
non-page-aligned persistent ram buffer.

By default ftrace_size is 4096 and max_ftrace_cnt is nr_cpu_ids. Without
this patch, the zone_sz in ramoops_init_przs() is 4096/nr_cpu_ids which
might not be page aligned. If the offset-in-page > 2048, the vaddr will be
in next page. If the next page is not mapped, it will cause kernel panic:

[    0.074231] BUG: unable to handle kernel paging request at ffffa19e0081b000
...
[    0.075000] RIP: 0010:persistent_ram_new+0x1f8/0x39f
...
[    0.075000] Call Trace:
[    0.075000]  ramoops_init_przs.part.10.constprop.15+0x105/0x260
[    0.075000]  ramoops_probe+0x232/0x3a0
[    0.075000]  platform_drv_probe+0x3e/0xa0
[    0.075000]  driver_probe_device+0x2cd/0x400
[    0.075000]  __driver_attach+0xe4/0x110
[    0.075000]  ? driver_probe_device+0x400/0x400
[    0.075000]  bus_for_each_dev+0x70/0xa0
[    0.075000]  driver_attach+0x1e/0x20
[    0.075000]  bus_add_driver+0x159/0x230
[    0.075000]  ? do_early_param+0x95/0x95
[    0.075000]  driver_register+0x70/0xc0
[    0.075000]  ? init_pstore_fs+0x4d/0x4d
[    0.075000]  __platform_driver_register+0x36/0x40
[    0.075000]  ramoops_init+0x12f/0x131
[    0.075000]  do_one_initcall+0x4d/0x12c
[    0.075000]  ? do_early_param+0x95/0x95
[    0.075000]  kernel_init_freeable+0x19b/0x222
[    0.075000]  ? rest_init+0xbb/0xbb
[    0.075000]  kernel_init+0xe/0xfc
[    0.075000]  ret_from_fork+0x3a/0x50

Signed-off-by: Bin Yang <bin.yang@intel.com>
[kees: add comments describing the mapping differences, updated commit log]
Fixes: 24c3d2f342ed ("staging: android: persistent_ram: Make it possible to use memory outside of bootmem")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
3 years agoMerge tag 'pci-v4.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Thu, 13 Sep 2018 05:39:56 +0000 (19:39 -1000)]
Merge tag 'pci-v4.19-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Add Tyrel Datwyler as maintainer for PPC64 RPA hotplug (Tyrel
   Datwyler)

 - Add Gustavo Pimentel as DesignWare PCI maintainer (Joao Pinto)

 - Fix a Switchtec Spectre v1 vulnerability (Gustavo A. R. Silva)

 - Revert an unnecessary Intel 300 ACS quirk (Mika Westerberg)

 - Fix pciehp hot-add/powerfault detection that left indicators in wrong
   state (Keith Busch)

 - Fix pci_reset_bus() logic error (Dennis Dalessandro)

 - Revert IB/hfi1 PCI reset change that caused a deadlock (Dennis
   Dalessandro)

 - Allow enabling PASID on Root Complex Integrated Endpoints (Felix
   Kuehling)

* tag 'pci-v4.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Fix enabling of PASID on RC integrated endpoints
  IB/hfi1,PCI: Allow bus reset while probing
  PCI: Fix faulty logic in pci_reset_bus()
  PCI: pciehp: Fix hot-add vs powerfault detection order
  switchtec: Fix Spectre v1 vulnerability
  Revert "PCI: Add ACS quirk for Intel 300 series"
  MAINTAINERS: Add Gustavo Pimentel as DesignWare PCI maintainer
  MAINTAINERS: Add entries for PPC64 RPA PCI hotplug drivers

3 years agoMerge tag 'for-linus-4.19' of git://github.com/cminyard/linux-ipmi
Linus Torvalds [Thu, 13 Sep 2018 05:33:56 +0000 (19:33 -1000)]
Merge tag 'for-linus-4.19' of git://github.com/cminyard/linux-ipmi

Pull IPMI bugfixes from Corey Minyard:
 "A few fixes that came around or after the merge window, except for
  commit cd2315d471f4 ("ipmi: kcs_bmc: don't change device name") which
  is for a driver that very few people use, and those people need the
  change"

* tag 'for-linus-4.19' of git://github.com/cminyard/linux-ipmi:
  ipmi: Fix NULL pointer dereference in ssif_probe
  ipmi: Fix I2C client removal in the SSIF driver
  ipmi: Move BT capabilities detection to the detect call
  ipmi: Rework SMI registration failure
  ipmi: kcs_bmc: don't change device name

3 years agoMerge tag 'drm-fixes-2018-09-12' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Thu, 13 Sep 2018 03:36:47 +0000 (17:36 -1000)]
Merge tag 'drm-fixes-2018-09-12' of git://anongit.freedesktop.org/drm/drm

Pull drm nouveau fixes from Dave Airlie:
 "I'm sending this separately as it's a bit larger than I generally like
  for one driver, but it does contain a bunch of make my nvidia laptop
  not die (runpm) and a bunch to make my docking station and monitor
  display stuff (mst) fixes.

  Lyude has spent a lot of time on these, and we are putting the fixes
  into distro kernels as well asap, as it helps a bunch of standard
  Lenovo laptops, so I'm fairly happy things are better than they were
  before these patches, but I decided to split them out just for
  clarification"

* tag 'drm-fixes-2018-09-12' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/disp/gm200-: enforce identity-mapped SOR assignment for LVDS/eDP panels
  drm/nouveau/disp: fix DP disable race
  drm/nouveau/disp: move eDP panel power handling
  drm/nouveau/disp: remove unused struct member
  drm/nouveau/TBDdevinit: don't fail when PMU/PRE_OS is missing from VBIOS
  drm/nouveau/mmu: don't attempt to dereference vmm without valid instance pointer
  drm/nouveau: fix oops in client init failure path
  drm/nouveau: Fix nouveau_connector_ddc_detect()
  drm/nouveau/drm/nouveau: Don't forget to cancel hpd_work on suspend/unload
  drm/nouveau/drm/nouveau: Prevent handling ACPI HPD events too early
  drm/nouveau: Reset MST branching unit before enabling
  drm/nouveau: Only write DP_MSTM_CTRL when needed
  drm/nouveau: Remove useless poll_enable() call in drm_load()
  drm/nouveau: Remove useless poll_disable() call in switcheroo_set_state()
  drm/nouveau: Remove useless poll_enable() call in switcheroo_set_state()
  drm/nouveau: Fix deadlocks in nouveau_connector_detect()
  drm/nouveau/drm/nouveau: Use pm_runtime_get_noresume() in connector_detect()
  drm/nouveau/drm/nouveau: Fix deadlock with fb_helper with async RPM requests
  drm/nouveau: Remove duplicate poll_enable() in pmops_runtime_suspend()
  drm/nouveau/drm/nouveau: Fix bogus drm_kms_helper_poll_enable() placement

3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Thu, 13 Sep 2018 03:32:50 +0000 (17:32 -1000)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix up several Kconfig dependencies in netfilter, from Martin Willi
    and Florian Westphal.

 2) Memory leak in be2net driver, from Petr Oros.

 3) Memory leak in E-Switch handling of mlx5 driver, from Raed Salem.

 4) mlx5_attach_interface needs to check for errors, from Huy Nguyen.

 5) tipc_release() needs to orphan the sock, from Cong Wang.

 6) Need to program TxConfig register after TX/RX is enabled in r8169
    driver, not beforehand, from Maciej S. Szmigiero.

 7) Handle 64K PAGE_SIZE properly in ena driver, from Netanel Belgazal.

 8) Fix crash regression in ip_do_fragment(), from Taehee Yoo.

 9) syzbot can create conditions where kernel log is flooded with
    synflood warnings due to creation of many listening sockets, fix
    that. From Willem de Bruijn.

10) Fix RCU issues in rds socket layer, from Cong Wang.

11) Fix vlan matching in nfp driver, from Pieter Jansen van Vuuren.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (59 commits)
  nfp: flower: reject tunnel encap with ipv6 outer headers for offloading
  nfp: flower: fix vlan match by checking both vlan id and vlan pcp
  tipc: check return value of __tipc_dump_start()
  s390/qeth: don't dump past end of unknown HW header
  s390/qeth: use vzalloc for QUERY OAT buffer
  s390/qeth: switch on SG by default for IQD devices
  s390/qeth: indicate error when netdev allocation fails
  rds: fix two RCU related problems
  r8169: Clear RTL_FLAG_TASK_*_PENDING when clearing RTL_FLAG_TASK_ENABLED
  erspan: fix error handling for erspan tunnel
  erspan: return PACKET_REJECT when the appropriate tunnel is not found
  tcp: rate limit synflood warnings further
  MIPS: lantiq: dma: add dev pointer
  netfilter: xt_hashlimit: use s->file instead of s->private
  netfilter: nfnetlink_queue: Solve the NFQUEUE/conntrack clash for NF_REPEAT
  netfilter: cttimeout: ctnl_timeout_find_get() returns incorrect pointer to type
  netfilter: conntrack: timeout interface depend on CONFIG_NF_CONNTRACK_TIMEOUT
  netfilter: conntrack: reset tcp maxwin on re-register
  qmi_wwan: Support dynamic config on Quectel EP06
  ethernet: renesas: convert to SPDX identifiers
  ...

3 years agodrm/nouveau/devinit: fix warning when PMU/PRE_OS is missing
Ben Skeggs [Thu, 13 Sep 2018 00:56:38 +0000 (10:56 +1000)]
drm/nouveau/devinit: fix warning when PMU/PRE_OS is missing

Messed up when sending pull request and sent an outdated version of
previous patch, this fixes it up to remove warnings.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
3 years agonull_blk: fix zoned support for non-rq based operation
Jens Axboe [Thu, 13 Sep 2018 00:21:11 +0000 (18:21 -0600)]
null_blk: fix zoned support for non-rq based operation

The supported added for zones in null_blk seem to assume that only rq
based operation is possible. But this depends on the queue_mode setting,
if this is set to 0, then cmd->bio is what we need to be operating on.
Right now any attempt to load null_blk with queue_mode=0 will
insta-crash, since cmd->rq is NULL and null_handle_cmd() assumes it to
always be set.

Make the zoned code deal with bio's instead, or pass in the
appropriate sector/nr_sectors instead.

Fixes: ca4b2a011948 ("null_blk: add zone support")
Tested-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agocifs: read overflow in is_valid_oplock_break()
Dan Carpenter [Thu, 6 Sep 2018 09:47:01 +0000 (12:47 +0300)]
cifs: read overflow in is_valid_oplock_break()

We need to verify that the "data_offset" is within bounds.

Reported-by: Dr Silvio Cesare of InfoSect <silvio.cesare@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
3 years agoMerge branch 'nfp-flower-fixes'
David S. Miller [Wed, 12 Sep 2018 20:18:30 +0000 (13:18 -0700)]
Merge branch 'nfp-flower-fixes'

Jakub Kicinski says:

====================
nfp: flower: fixes for flower offload

Two fixes for flower matching and tunnel encap.  Pieter fixes
VLAN matching if the entire VLAN id is masked out and match
is only performed on the PCP field.  Louis adds validation of
tunnel flags for encap, most importantly we should not offload
actions on IPv6 tunnels if it's not supported.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonfp: flower: reject tunnel encap with ipv6 outer headers for offloading
Louis Peens [Tue, 11 Sep 2018 13:38:45 +0000 (06:38 -0700)]
nfp: flower: reject tunnel encap with ipv6 outer headers for offloading

This fixes a bug where ipv6 tunnels would report that it is
getting offloaded to hardware but would actually be rejected
by hardware.

Fixes: b27d6a95a70d ("nfp: compile flower vxlan tunnel set actions")
Signed-off-by: Louis Peens <louis.peens@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonfp: flower: fix vlan match by checking both vlan id and vlan pcp
Pieter Jansen van Vuuren [Tue, 11 Sep 2018 13:38:44 +0000 (06:38 -0700)]
nfp: flower: fix vlan match by checking both vlan id and vlan pcp

Previously we only checked if the vlan id field is present when trying
to match a vlan tag. The vlan id and vlan pcp field should be treated
independently.

Fixes: 5571e8c9f241 ("nfp: extend flower matching capabilities")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agotipc: check return value of __tipc_dump_start()
Cong Wang [Tue, 11 Sep 2018 22:12:17 +0000 (15:12 -0700)]
tipc: check return value of __tipc_dump_start()

When __tipc_dump_start() fails with running out of memory,
we have no reason to continue, especially we should avoid
calling tipc_dump_done().

Fixes: 8f5c5fcf3533 ("tipc: call start and done ops directly in __tipc_nl_compat_dumpit()")
Reported-and-tested-by: syzbot+3f8324abccfbf8c74a9f@syzkaller.appspotmail.com
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'qeth-fixes'
David S. Miller [Wed, 12 Sep 2018 20:12:52 +0000 (13:12 -0700)]
Merge branch 'qeth-fixes'

Julian Wiedmann says:

====================
s390/qeth: fixes 2018-09-12

please apply the following qeth fixes for -net.

Patch 1 resolves a regression in an error path, while patch 2 enables
the SG support by default that was newly introduced with 4.19.
Patch 3 takes care of a longstanding problem with large-order
allocations, and patch 4 fixes a potential out-of-bounds access.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agos390/qeth: don't dump past end of unknown HW header
Julian Wiedmann [Wed, 12 Sep 2018 13:31:35 +0000 (15:31 +0200)]
s390/qeth: don't dump past end of unknown HW header

For inbound data with an unsupported HW header format, only dump the
actual HW header. We have no idea how much payload follows it, and what
it contains. Worst case, we dump past the end of the Inbound Buffer and
access whatever is located next in memory.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agos390/qeth: use vzalloc for QUERY OAT buffer
Wenjia Zhang [Wed, 12 Sep 2018 13:31:34 +0000 (15:31 +0200)]
s390/qeth: use vzalloc for QUERY OAT buffer

qeth_query_oat_command() currently allocates the kernel buffer for
the SIOC_QETH_QUERY_OAT ioctl with kzalloc. So on systems with
fragmented memory, large allocations may fail (eg. the qethqoat tool by
default uses 132KB).

Solve this issue by using vzalloc, backing the allocation with
non-contiguous memory.

Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agos390/qeth: switch on SG by default for IQD devices
Julian Wiedmann [Wed, 12 Sep 2018 13:31:33 +0000 (15:31 +0200)]
s390/qeth: switch on SG by default for IQD devices

Scatter-gather transmit brings a nice performance boost. Considering the
rather large MTU sizes at play, it's also totally the Right Thing To Do.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agos390/qeth: indicate error when netdev allocation fails
Julian Wiedmann [Wed, 12 Sep 2018 13:31:32 +0000 (15:31 +0200)]
s390/qeth: indicate error when netdev allocation fails

Bailing out on allocation error is nice, but we also need to tell the
ccwgroup core that creating the qeth groupdev failed.

Fixes: d3d1b205e89f ("s390/qeth: allocate netdevice early")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agox86/efi: Load fixmap GDT in efi_call_phys_epilog() before setting %cr3
Guenter Roeck [Tue, 11 Sep 2018 18:18:12 +0000 (11:18 -0700)]
x86/efi: Load fixmap GDT in efi_call_phys_epilog() before setting %cr3

Commit eeb89e2bb1ac ("x86/efi: Load fixmap GDT in efi_call_phys_epilog()")
moved loading the fixmap in efi_call_phys_epilog() after load_cr3() since
it was assumed to be more logical.

Turns out this is incorrect: In efi_call_phys_prolog(), the gdt with its
physical address is loaded first, and when the %cr3 is reloaded in _epilog
from initial_page_table to swapper_pg_dir again the gdt is no longer
mapped.  This results in a triple fault if an interrupt occurs after
load_cr3() and before load_fixmap_gdt(0). Calling load_fixmap_gdt(0) first
restores the execution order prior to commit eeb89e2bb1ac and fixes the
problem.

Fixes: eeb89e2bb1ac ("x86/efi: Load fixmap GDT in efi_call_phys_epilog()")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: linux-efi@vger.kernel.org
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Joerg Roedel <jroedel@suse.de>
Link: https://lkml.kernel.org/r/1536689892-21538-1-git-send-email-linux@roeck-us.net
3 years agox86/xen: Disable CPU0 hotplug for Xen PV
Juergen Gross [Wed, 12 Sep 2018 17:41:22 +0000 (19:41 +0200)]
x86/xen: Disable CPU0 hotplug for Xen PV

Xen PV guests don't allow CPU0 hotplug, so disable it.

Signed-off-by: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: boris.ostrovsky@oracle.com
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20180912174122.24282-1-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
3 years agoMerge tag 'perf-urgent-for-mingo-4.19-20180912' of git://git.kernel.org/pub/scm/linux...
Ingo Molnar [Wed, 12 Sep 2018 19:10:05 +0000 (21:10 +0200)]
Merge tag 'perf-urgent-for-mingo-4.19-20180912' of git://git./linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

- Fix finding a symbol by name when multiple maps use the same backing DSO,
  so we must first see if that symbol name is in the DSO, then see if it is
  inside the range of addresses for that specific map (Adrian Hunter)

- Update the tools copies of UAPI headers, which silences the warnings
  emitted when building the tools and in some cases, like for the new
  KVM ioctls, results in 'perf trace' being able to translate that
  ioctl number to a string (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
3 years agotracing/Makefile: Fix handling redefinition of CC_FLAGS_FTRACE
Paulo Zanoni [Mon, 10 Sep 2018 17:59:56 +0000 (10:59 -0700)]
tracing/Makefile: Fix handling redefinition of CC_FLAGS_FTRACE

As a Kernel developer, I make heavy use of "make targz-pkg" in order
to locally compile and remotely install my development Kernels. The
nice feature I rely on is that after a normal "make", "make targz-pkg"
only generates the tarball without having to recompile everything.

That was true until commit f28bc3c32c05 ("tracing: Handle
CC_FLAGS_FTRACE more accurately"). After it, running "make targz-pkg"
after "make" will recompile the whole Kernel tree, making my
development workflow much slower.

The Kernel is choosing to recompile everything because it claims the
command line has changed. A diff of the .cmd files show a repeated
-mfentry in one of the files. That is because "make targz-pkg" calls
"make modules_install" and the environment is already populated with
the exported variables, CC_FLAGS_FTRACE being one of them. Then,
-mfentry gets duplicated because it is not protected behind an ifndef
block, like -pg.

To complicate the problem a little bit more, architectures can define
their own version CC_FLAGS_FTRACE, so our code not only has to
consider recursive Makefiles, but also architecture overrides.

So in this patch we move CC_FLAGS_FTRACE up and unconditionally
define it to -pg. Then we let the architecture Makefiles possibly
override it, and finally append the extra options later. This ensures
the variable is always fully redefined at each invocation so recursive
Makefiles don't keep appending, and hopefully it maintains the
intended behavior on how architectures can override the defaults..

Thanks Steven Rostedt and Vasily Gorbik for the help on this
regression.

Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: linux-kbuild@vger.kernel.org
Fixes: commit f28bc3c32c05 ("tracing: Handle CC_FLAGS_FTRACE more accurately")
Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
3 years agoMerge tag 'riscv-for-linus-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 12 Sep 2018 16:51:27 +0000 (06:51 -1000)]
Merge tag 'riscv-for-linus-4.19-rc3' of git://git./linux/kernel/git/palmer/riscv-linux

Pull RISC-V fix from Palmer Dabbelt:
 "This contains what I hope to be the last RISC-V patch for 4.19.

  It fixes a bug in our initramfs support by removing some broken and
  obselete code"

* tag 'riscv-for-linus-4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  riscv: Do not overwrite initrd_start and initrd_end

3 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Wed, 12 Sep 2018 16:44:03 +0000 (06:44 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three fixes, all in drivers (qedi and iscsi target) so no wider impact
  even if the code changes are a bit extensive"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: qedi: Add the CRC size within iSCSI NVM image
  scsi: iscsi: target: Fix conn_ops double free
  scsi: iscsi: target: Set conn->sess to NULL when iscsi_login_set_conn_values fails

3 years agocifs: integer overflow in in SMB2_ioctl()
Dan Carpenter [Mon, 10 Sep 2018 11:12:07 +0000 (14:12 +0300)]
cifs: integer overflow in in SMB2_ioctl()

The "le32_to_cpu(rsp->OutputOffset) + *plen" addition can overflow and
wrap around to a smaller value which looks like it would lead to an
information leak.

Fixes: 4a72dafa19ba ("SMB2 FSCTL and IOCTL worker function")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
CC: Stable <stable@vger.kernel.org>
3 years agoCIFS: fix wrapping bugs in num_entries()
Dan Carpenter [Thu, 6 Sep 2018 09:48:22 +0000 (12:48 +0300)]
CIFS: fix wrapping bugs in num_entries()

The problem is that "entryptr + next_offset" and "entryptr + len + size"
can wrap.  I ended up changing the type of "entryptr" because it makes
the math easier when we don't have to do so much casting.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: Stable <stable@vger.kernel.org>
3 years agocifs: prevent integer overflow in nxt_dir_entry()
Dan Carpenter [Thu, 6 Sep 2018 09:47:51 +0000 (12:47 +0300)]
cifs: prevent integer overflow in nxt_dir_entry()

The "old_entry + le32_to_cpu(pDirInfo->NextEntryOffset)" can wrap
around so I have added a check for integer overflow.

Reported-by: Dr Silvio Cesare of InfoSect <silvio.cesare@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
3 years agos390/zcrypt: remove VLA usage from the AP bus
Martin Schwidefsky [Wed, 5 Sep 2018 05:45:11 +0000 (07:45 +0200)]
s390/zcrypt: remove VLA usage from the AP bus

The use of variable length arrays on the stack is deprecated.
git commit 3d8f60d38e249f989a7fca9c2370c31c3d5487e1
"s390/zcrypt: hex string mask improvements for apmask and aqmask."
added three new VLA arrays. Remove them again.

Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
3 years agofirmware: Fix security issue with request_firmware_into_buf()
Rishabh Bhatnagar [Fri, 31 Aug 2018 15:43:31 +0000 (08:43 -0700)]
firmware: Fix security issue with request_firmware_into_buf()

When calling request_firmware_into_buf() with the FW_OPT_NOCACHE flag
it is expected that firmware is loaded into buffer from memory.
But inside alloc_lookup_fw_priv every new firmware that is loaded is
added to the firmware cache (fwc) list head. So if any driver requests
a firmware that is already loaded the code iterates over the above
mentioned list and it can end up giving a pointer to other device driver's
firmware buffer.
Also the existing copy may either be modified by drivers, remote processors
or even freed. This causes a potential security issue with batched requests
when using request_firmware_into_buf.

Fix alloc_lookup_fw_priv to not add to the fwc head list if FW_OPT_NOCACHE
is set, and also don't do the lookup in the list.

Fixes: 0e742e9275 ("firmware: provide infrastructure to make fw caching optional")
[mcgrof: broken since feature introduction on v4.8]

Cc: stable@vger.kernel.org # v4.8+
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agovmbus: don't return values for uninitalized channels
Stephen Hemminger [Mon, 20 Aug 2018 21:16:40 +0000 (21:16 +0000)]
vmbus: don't return values for uninitalized channels

For unsupported device types, the vmbus channel ringbuffer is never
initialized, and therefore reading the sysfs files will return garbage
or cause a kernel OOPS.

Fixes: c2e5df616e1a ("vmbus: add per-channel sysfs info")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org> # 4.15
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agofpga: dfl: fme: fix return value check in in pr_mgmt_init()
Wei Yongjun [Thu, 16 Aug 2018 19:42:13 +0000 (14:42 -0500)]
fpga: dfl: fme: fix return value check in in pr_mgmt_init()

In case of error, the function dfl_fme_create_region() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: 29de76240e86 ("fpga: dfl: fme: add partial reconfiguration sub feature support")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Moritz Fischer <mdf@kernel.org>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agomisc: hmc6352: fix potential Spectre v1
Gustavo A. R. Silva [Wed, 15 Aug 2018 15:50:41 +0000 (10:50 -0500)]
misc: hmc6352: fix potential Spectre v1

val is indirectly controlled by user-space, hence leading to a
potential exploitation of the Spectre variant 1 vulnerability.

This issue was detected with the help of Smatch:

drivers/misc/hmc6352.c:54 compass_store() warn: potential spectre issue
'map' [r]

Fix this by sanitizing val before using it to index map

Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].

[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2

Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoTools: hv: Fix a bug in the key delete code
K. Y. Srinivasan [Fri, 10 Aug 2018 23:06:07 +0000 (23:06 +0000)]
Tools: hv: Fix a bug in the key delete code

Fix a bug in the key delete code - the num_records range
from 0 to num_records-1.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reported-by: David Binderman <dcb314@hotmail.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agomisc: ibmvsm: Fix wrong assignment of return code
Bryant G. Ly [Mon, 6 Aug 2018 13:31:00 +0000 (08:31 -0500)]
misc: ibmvsm: Fix wrong assignment of return code

Currently the assignment is flipped and rc is always 0.

Signed-off-by: Bryant G. Ly <bryantly@linux.ibm.com>
Fixes: 0eca353e7ae7 ("misc: IBM Virtual Management Channel Driver (VMC)")
Reviewed-by: Bradley Warrum <bwarrum@us.ibm.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoandroid: binder: fix the race mmap and alloc_new_buf_locked
Minchan Kim [Thu, 23 Aug 2018 05:29:56 +0000 (14:29 +0900)]
android: binder: fix the race mmap and alloc_new_buf_locked

There is RaceFuzzer report like below because we have no lock to close
below the race between binder_mmap and binder_alloc_new_buf_locked.
To close the race, let's use memory barrier so that if someone see
alloc->vma is not NULL, alloc->vma_vm_mm should be never NULL.

(I didn't add stable mark intentionallybecause standard android
userspace libraries that interact with binder (libbinder & libhwbinder)
prevent the mmap/ioctl race. - from Todd)

"
Thread interleaving:
CPU0 (binder_alloc_mmap_handler)              CPU1 (binder_alloc_new_buf_locked)
=====                                         =====
// drivers/android/binder_alloc.c
// #L718 (v4.18-rc3)
alloc->vma = vma;
                                              // drivers/android/binder_alloc.c
                                              // #L346 (v4.18-rc3)
                                              if (alloc->vma == NULL) {
                                                  ...
                                                  // alloc->vma is not NULL at this point
                                                  return ERR_PTR(-ESRCH);
                                              }
                                              ...
                                              // #L438
                                              binder_update_page_range(alloc, 0,
                                                      (void *)PAGE_ALIGN((uintptr_t)buffer->data),
                                                      end_page_addr);

                                              // In binder_update_page_range() #L218
                                              // But still alloc->vma_vm_mm is NULL here
                                              if (need_mm && mmget_not_zero(alloc->vma_vm_mm))
alloc->vma_vm_mm = vma->vm_mm;

Crash Log:
==================================================================
BUG: KASAN: null-ptr-deref in __atomic_add_unless include/asm-generic/atomic-instrumented.h:89 [inline]
BUG: KASAN: null-ptr-deref in atomic_add_unless include/linux/atomic.h:533 [inline]
BUG: KASAN: null-ptr-deref in mmget_not_zero include/linux/sched/mm.h:75 [inline]
BUG: KASAN: null-ptr-deref in binder_update_page_range+0xece/0x18e0 drivers/android/binder_alloc.c:218
Write of size 4 at addr 0000000000000058 by task syz-executor0/11184

CPU: 1 PID: 11184 Comm: syz-executor0 Not tainted 4.18.0-rc3 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x16e/0x22c lib/dump_stack.c:113
 kasan_report_error mm/kasan/report.c:352 [inline]
 kasan_report+0x163/0x380 mm/kasan/report.c:412
 check_memory_region_inline mm/kasan/kasan.c:260 [inline]
 check_memory_region+0x140/0x1a0 mm/kasan/kasan.c:267
 kasan_check_write+0x14/0x20 mm/kasan/kasan.c:278
 __atomic_add_unless include/asm-generic/atomic-instrumented.h:89 [inline]
 atomic_add_unless include/linux/atomic.h:533 [inline]
 mmget_not_zero include/linux/sched/mm.h:75 [inline]
 binder_update_page_range+0xece/0x18e0 drivers/android/binder_alloc.c:218
 binder_alloc_new_buf_locked drivers/android/binder_alloc.c:443 [inline]
 binder_alloc_new_buf+0x467/0xc30 drivers/android/binder_alloc.c:513
 binder_transaction+0x125b/0x4fb0 drivers/android/binder.c:2957
 binder_thread_write+0xc08/0x2770 drivers/android/binder.c:3528
 binder_ioctl_write_read.isra.39+0x24f/0x8e0 drivers/android/binder.c:4456
 binder_ioctl+0xa86/0xf34 drivers/android/binder.c:4596
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x154/0xd40 fs/ioctl.c:686
 ksys_ioctl+0x94/0xb0 fs/ioctl.c:701
 __do_sys_ioctl fs/ioctl.c:708 [inline]
 __se_sys_ioctl fs/ioctl.c:706 [inline]
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:706
 do_syscall_64+0x167/0x4b0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
"

Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Martijn Coenen <maco@android.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agomei: bus: need to unlink client before freeing
Tomas Winkler [Mon, 27 Aug 2018 19:40:16 +0000 (22:40 +0300)]
mei: bus: need to unlink client before freeing

In case a client fails to connect in mei_cldev_enable(), the
caller won't call the mei_cldev_disable leaving the client
in a linked stated. Upon driver unload the client structure
will be freed in  mei_cl_bus_dev_release(), leaving a stale pointer
on a fail_list.  This will eventually end up in crash
during power down flow in mei_cl_set_disonnected().

RIP:  mei_cl_set_disconnected+0x5/0x260[mei]
Call trace:
mei_cl_all_disconnect+0x22/0x30
mei_reset+0x194/0x250
__synchronize_hardirq+0x43/0x50
_cond_resched+0x15/0x30
mei_me_intr_clear+0x20/0x100
mei_stop+0x76/0xb0
mei_me_shutdown+0x3f/0x80
pci_device_shutdown+0x34/0x60
kernel_restart+0x0e/0x30

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=200455
Fixes: 'c110cdb17148 ("mei: bus: make a client pointer always available")'
Cc: <stable@vger.kernel.org> 4.10+
Tested-by: Georg Müller <georgmueller@gmx.net>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agomei: bus: fix hw module get/put balance
Tomas Winkler [Mon, 27 Aug 2018 19:40:15 +0000 (22:40 +0300)]
mei: bus: fix hw module get/put balance

In case the device is not connected it doesn't 'get'
hw module and hence should not 'put' it on disable.

Cc: <stable@vger.kernel.org> 4.16+
Fixes:'commit 257355a44b99 ("mei: make module referencing local to the bus.c")'
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=200455
Tested-by: Georg Müller <georgmueller@gmx.net>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agomei: fix use-after-free in mei_cl_write
John Hubbard [Thu, 23 Aug 2018 06:16:58 +0000 (09:16 +0300)]
mei: fix use-after-free in mei_cl_write

KASAN reports a use-after-free during startup, in mei_cl_write:

    BUG: KASAN: use-after-free in mei_cl_write+0x601/0x870 [mei]
       (drivers/misc/mei/client.c:1770)

This is caused by commit 98e70866aacb ("mei: add support for variable
length mei headers."), which changed the return value from len, to
buf->size. That ends up using a stale buf pointer, because blocking
call, the cb (callback) is deleted in me_cl_complete() function.

However, fortunately, len remains unchanged throughout the function
(and I don't see anything else that would require re-reading buf->size
either), so the fix is to simply revert the change, and return len, as
before.

Fixes: 98e70866aacb ("mei: add support for variable length mei headers.")
CC: Arnd Bergmann <arnd@arndb.de>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agomei: ignore not found client in the enumeration
Alexander Usyskin [Mon, 6 Aug 2018 14:47:33 +0000 (17:47 +0300)]
mei: ignore not found client in the enumeration

Some of the ME clients are available only for BIOS operation and are
removed during hand off to an OS. However the removal is not instant.
A client may be visible on the client list when the mei driver requests
for enumeration, while the subsequent request for properties will be
answered with client not found error value. The default behavior
for an error is to perform client reset while this error is harmless and
the link reset should be prevented. This issue started to be visible due to
suspend/resume timing changes. Currently reported only on the Haswell
based system.

Fixes:
[33.564957] mei_me 0000:00:16.0: hbm: properties response: wrong status = 1 CLIENT_NOT_FOUND
[33.564978] mei_me 0000:00:16.0: mei_irq_read_handler ret = -71.
[33.565270] mei_me 0000:00:16.0: unexpected reset: dev_state = INIT_CLIENTS fw status = 1E000255 60002306 00000200 00004401 00000000 00000010

Cc: <stable@vger.kernel.org>
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agords: fix two RCU related problems
Cong Wang [Tue, 11 Sep 2018 01:27:26 +0000 (18:27 -0700)]
rds: fix two RCU related problems

When a rds sock is bound, it is inserted into the bind_hash_table
which is protected by RCU. But when releasing rds sock, after it
is removed from this hash table, it is freed immediately without
respecting RCU grace period. This could cause some use-after-free
as reported by syzbot.

Mark the rds sock with SOCK_RCU_FREE before inserting it into the
bind_hash_table, so that it would be always freed after a RCU grace
period.

The other problem is in rds_find_bound(), the rds sock could be
freed in between rhashtable_lookup_fast() and rds_sock_addref(),
so we need to extend RCU read lock protection in rds_find_bound()
to close this race condition.

Reported-and-tested-by: syzbot+8967084bcac563795dc6@syzkaller.appspotmail.com
Reported-by: syzbot+93a5839deb355537440f@syzkaller.appspotmail.com
Cc: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Cc: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Cc: rds-devel@oss.oracle.com
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oarcle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: Clear RTL_FLAG_TASK_*_PENDING when clearing RTL_FLAG_TASK_ENABLED
Kai-Heng Feng [Mon, 10 Sep 2018 17:51:43 +0000 (01:51 +0800)]
r8169: Clear RTL_FLAG_TASK_*_PENDING when clearing RTL_FLAG_TASK_ENABLED

After system suspend, sometimes the r8169 doesn't work when ethernet
cable gets pluggued.

This issue happens because rtl_reset_work() doesn't get called from
rtl8169_runtime_resume(), after system suspend.

In rtl_task(), RTL_FLAG_TASK_* only gets cleared if this condition is
met:
if (!netif_running(dev) ||
    !test_bit(RTL_FLAG_TASK_ENABLED, tp->wk.flags))
    ...

If RTL_FLAG_TASK_ENABLED was cleared during system suspend while
RTL_FLAG_TASK_RESET_PENDING was set, the next rtl_schedule_task() won't
schedule task as the flag is still there.

So in addition to clearing RTL_FLAG_TASK_ENABLED, also clears other
flags.

Cc: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoerspan: fix error handling for erspan tunnel
Haishuang Yan [Mon, 10 Sep 2018 14:19:48 +0000 (22:19 +0800)]
erspan: fix error handling for erspan tunnel

When processing icmp unreachable message for erspan tunnel, tunnel id
should be erspan_net_id instead of ipgre_net_id.

Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoerspan: return PACKET_REJECT when the appropriate tunnel is not found
Haishuang Yan [Mon, 10 Sep 2018 14:19:47 +0000 (22:19 +0800)]
erspan: return PACKET_REJECT when the appropriate tunnel is not found

If erspan tunnel hasn't been established, we'd better send icmp port
unreachable message after receive erspan packets.

Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agotcp: rate limit synflood warnings further
Willem de Bruijn [Sun, 9 Sep 2018 23:12:12 +0000 (19:12 -0400)]
tcp: rate limit synflood warnings further

Convert pr_info to net_info_ratelimited to limit the total number of
synflood warnings.

Commit 946cedccbd73 ("tcp: Change possible SYN flooding messages")
rate limits synflood warnings to one per listener.

Workloads that open many listener sockets can still see a high rate of
log messages. Syzkaller is one frequent example.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMIPS: lantiq: dma: add dev pointer
Hauke Mehrtens [Sun, 9 Sep 2018 19:26:23 +0000 (21:26 +0200)]
MIPS: lantiq: dma: add dev pointer

dma_zalloc_coherent() now crashes if no dev pointer is given.
Add a dev pointer to the ltq_dma_channel structure and fill it in the
driver using it.

This fixes a bug introduced in kernel 4.19.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoxtensa: enable SG chaining in Kconfig
Max Filippov [Wed, 12 Sep 2018 05:12:59 +0000 (22:12 -0700)]
xtensa: enable SG chaining in Kconfig

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
3 years agoxtensa: remove unnecessary KBUILD_SRC ifeq conditional
Masahiro Yamada [Wed, 12 Sep 2018 04:25:19 +0000 (13:25 +0900)]
xtensa: remove unnecessary KBUILD_SRC ifeq conditional

You can always prefix variant/platform header search paths with
$(srctree)/ because $(srctree) is '.' for in-tree building.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>