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  1. 03 12月, 2016 1 次提交
    • A
      default exported asm symbols to zero · 8ab2ae65
      由 Arnd Bergmann 提交于 
      With binutils-2.26 and before, a weak missing symbol was kept during the
final link, and a missing CRC for an export would lead to that CRC being
treated as zero implicitly.  With binutils-2.27, the crc symbol gets
dropped, and any module trying to use it will fail to load.

This sets the weak CRC symbol to zero explicitly, making it defined in
vmlinux, which in turn lets us load the modules referring to that CRC.

The comment above the __CRC_SYMBOL macro suggests that this was always
the intention, although it also seems that all symbols defined in C have
a correct CRC these days, and only the exports that are now done in
assembly need this.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Tested-by: NAdam Borowski <kilobyte@angband.pl>
Cc: stable@kernel.org
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8ab2ae65
  3. 02 12月, 2016 4 次提交
  5. 01 12月, 2016 12 次提交
  7. 30 11月, 2016 6 次提交
    • L
      Merge tag 'arc-4.9-final' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc · ded6e842
      由 Linus Torvalds 提交于 
      Pull ARC fixes from Vineet Gupta:

 - fix PAE40 crash [Yuriy]

 - disable IO-Coherency by default

 - use a different inline asm constraint for Zero Overhead loops

* tag 'arc-4.9-final' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: mm: PAE40: Fix crash at munmap
  ARC: mm: IOC: Don't enable IOC by default
  ARC: Don't use "+l" inline asm constraint
      ded6e842
    • L
      Re-enable CONFIG_MODVERSIONS in a slightly weaker form · faaae2a5
      由 Linus Torvalds 提交于 
      This enables CONFIG_MODVERSIONS again, but allows for missing symbol CRC
information in order to work around the issue that newer binutils
versions seem to occasionally drop the CRC on the floor.  binutils 2.26
seems to work fine, while binutils 2.27 seems to break MODVERSIONS of
symbols that have been defined in assembler files.

[ We've had random missing CRC's before - it may be an old problem that
  just is now reliably triggered with the weak asm symbols and a new
  version of binutils ]

Some day I really do want to remove MODVERSIONS entirely.  Sadly, today
does not appear to be that day: Debian people apparently do want the
option to enable MODVERSIONS to make it easier to have external modules
across kernel versions, and this seems to be a fairly minimal fix for
the annoying problem.

Cc: Ben Hutchings <ben@decadent.org.uk>
Acked-by: NMichal Marek <mmarek@suse.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      faaae2a5
    • L
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 22d3d4fb
      由 Linus Torvalds 提交于 
      Pull CIFS fixes from Steve French:
 "A few misc important cifs fixes, including a fix for a 4.9 regression
  in posix_acl xattr handling"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: iterate over posix acl xattr entry correctly in ACL_to_cifs_posix()
  Call echo service immediately after socket reconnect
  CIFS: Fix BUG() in calc_seckey()
      22d3d4fb
    • L
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · ab59d1f4
      由 Linus Torvalds 提交于 
      Pull SCSI fixes from James Bottomley:
 "Four small fixes.

  The be2iscsi is a potential device overrun in consistent memory, which
  could have nasty consequences if the consistent allocations are
  packed.

  The hpsa one fixes a regression where older controllers can now get a
  numbering clash between the first internal disk and the controller.

  The libfc one is a regression in timespec conversions which causes a
  user visible issue in a command line tool and the mpt3sas one fixes a
  regression where the controller could remain permanently blocked after
  an ATA pass through command followed by a reset"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: be2iscsi: allocate enough memory in beiscsi_boot_get_sinfo()
  scsi: mpt3sas: Unblock device after controller reset
  scsi: hpsa: use bus '3' for legacy HBA devices
  scsi: libfc: fix seconds_since_last_reset miscalculation
      ab59d1f4
    • Y
      ARC: mm: PAE40: Fix crash at munmap · 6a8b2ca7
      由 Yuriy Kolerov 提交于 
      commit 1c3c9093 broke PAE40. Macro pfn_pte(pfn, prot) creates paddr
from pfn, but the page shift was getting truncated to 32 bits since we lost
the proper cast to 64 bits (for PAE400

Instead of reverting that commit, use a better helper which is 32/64 bits
safe just like ARM implementation.

Fixes: 1c3c9093 ("ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS")
Cc: <stable@vger.kernel.org>   #4.4+
Signed-off-by: NYuriy Kolerov <yuriy.kolerov@synopsys.com>
[vgupta: massaged changelog]
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      6a8b2ca7
    • A
      mremap: move_ptes: check pte dirty after its removal · a2ce2666
      由 Aaron Lu 提交于 
      Linus found there still is a race in mremap after commit 5d190420
("mremap: fix race between mremap() and page cleanning").

As described by Linus:
 "the issue is that another thread might make the pte be dirty (in the
  hardware walker, so no locking of ours will make any difference)
  *after* we checked whether it was dirty, but *before* we removed it
  from the page tables"

Fix it by moving the check after we removed it from the page table.
Suggested-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NAaron Lu <aaron.lu@intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a2ce2666
  9. 29 11月, 2016 11 次提交
    • J
      pwm: Fix device reference leak · 0e1614ac
      由 Johan Hovold 提交于 
      Make sure to drop the reference to the parent device taken by
class_find_device() after "unexporting" any children when deregistering
a PWM chip.

Fixes: 0733424c ("pwm: Unexport children before chip removal")
Signed-off-by: NJohan Hovold <johan@kernel.org>
Signed-off-by: NThierry Reding <thierry.reding@gmail.com>
      0e1614ac
    • M
      ovl: fix d_real() for stacked fs · c4fcfc16
      由 Miklos Szeredi 提交于 
      Handling of recursion in d_real() is completely broken.  Recursion is only
done in the 'inode != NULL' case.  But when opening the file we have
'inode == NULL' hence d_real() will return an overlay dentry.  This won't
work since overlayfs doesn't define its own file operations, so all file
ops will fail.

Fix by doing the recursion first and the check against the inode second.

Bash script to reproduce the issue written by Quentin:

 - 8< - - - - - 8< - - - - - 8< - - - - - 8< - - - -
tmpdir=$(mktemp -d)
pushd ${tmpdir}

mkdir -p {upper,lower,work}
echo -n 'rocks' > lower/ksplice
mount -t overlay level_zero upper -o lowerdir=lower,upperdir=upper,workdir=work
cat upper/ksplice

tmpdir2=$(mktemp -d)
pushd ${tmpdir2}

mkdir -p {upper,work}
mount -t overlay level_one upper -o lowerdir=${tmpdir}/upper,upperdir=upper,workdir=work
ls -l upper/ksplice
cat upper/ksplice
 - 8< - - - - - 8< - - - - - 8< - - - - - 8< - - - - 
Reported-by: NQuentin Casasnovas <quentin.casasnovas@oracle.com>
Signed-off-by: NMiklos Szeredi <mszeredi@redhat.com>
Fixes: 2d902671 ("vfs: merge .d_select_inode() into .d_real()")
Cc: <stable@vger.kernel.org> # v4.8+
      c4fcfc16
    • E
      CIFS: iterate over posix acl xattr entry correctly in ACL_to_cifs_posix() · ae9ebe7c
      由 Eryu Guan 提交于 
      Commit 2211d5ba ("posix_acl: xattr representation cleanups")
removes the typedefs and the zero-length a_entries array in struct
posix_acl_xattr_header, and uses bare struct posix_acl_xattr_header
and struct posix_acl_xattr_entry directly.

But it failed to iterate over posix acl slots when converting posix
acls to CIFS format, which results in several test failures in
xfstests (generic/053 generic/105) when testing against a samba v1
server, starting from v4.9-rc1 kernel. e.g.

  [root@localhost xfstests]# diff -u tests/generic/105.out /root/xfstests/results//generic/105.out.bad
  --- tests/generic/105.out       2016-09-19 16:33:28.577962575 +0800
  +++ /root/xfstests/results//generic/105.out.bad 2016-10-22 15:41:15.201931110 +0800
  @@ -1,3 +1,4 @@
   QA output created by 105
   -rw-r--r-- root
  +setfacl: subdir: Invalid argument
   -rw-r--r-- root

Fix it by introducing a new "ace" var, like what
cifs_copy_posix_acl() does, and iterating posix acl xattr entries
over it in the for loop.
Signed-off-by: NEryu Guan <guaneryu@gmail.com>
Signed-off-by: NSteve French <smfrench@gmail.com>
      ae9ebe7c
    • S
      Call echo service immediately after socket reconnect · b8c60012
      由 Sachin Prabhu 提交于 
      Commit 4fcd1813 ("Fix reconnect to not defer smb3 session reconnect
long after socket reconnect") changes the behaviour of the SMB2 echo
service and causes it to renegotiate after a socket reconnect. However
under default settings, the echo service could take up to 120 seconds to
be scheduled.

The patch forces the echo service to be called immediately resulting a
negotiate call being made immediately on reconnect.
Signed-off-by: NSachin Prabhu <sprabhu@redhat.com>
Reviewed-by: NPavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: NSteve French <smfrench@gmail.com>
      b8c60012
    • S
      CIFS: Fix BUG() in calc_seckey() · 5f4b5569
      由 Sachin Prabhu 提交于 
      Andy Lutromirski's new virtually mapped kernel stack allocations moves
kernel stacks the vmalloc area. This triggers the bug
 kernel BUG at ./include/linux/scatterlist.h:140!
at calc_seckey()->sg_init()
Signed-off-by: NSachin Prabhu <sprabhu@redhat.com>
Signed-off-by: NSteve French <smfrench@gmail.com>
Reviewed-by: NJeff Layton <jlayton@redhat.com>
      5f4b5569
    • L
      Merge branch 'for-4.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata · 88abd824
      由 Linus Torvalds 提交于 
      Pull libata fixes from Tejun Heo:
 "The recent changes in ahci MSI handling need one more fix.  Hopefully,
  this restores parity with before.

  The other two are minor fixes with both low impact and risk"

* 'for-4.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ahci: always fall back to single-MSI mode
  libata-scsi: Fixup ata_gen_passthru_sense()
  mvsas: fix error return code in mvs_task_prep()
      88abd824
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 96e52d3a
      由 Linus Torvalds 提交于 
      Pull sparc fixes from David Miller:
 "Two ugly build warning fixes"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  dbri: Fix compiler warning
  qlogicpti: Fix compiler warnings
      96e52d3a
    • T
      dbri: Fix compiler warning · 16f46050
      由 Tushar Dave 提交于 
      dbri uses 'u32' for dma handle while invoking kernel DMA APIs,
instead of using dma_addr_t. This hasn't caused any 'incompatible
pointer type' warning on SPARC because until now dma_addr_t is of
type u32. However, recent changes in SPARC ATU (iommu) enabled 64bit
DMA and therefore dma_addr_t became of type u64. This makes
'incompatible pointer type' warnings inevitable.

e.g.
sound/sparc/dbri.c: In function ‘snd_dbri_create’:
sound/sparc/dbri.c:2538: warning: passing argument 3 of ‘dma_zalloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:608: note: expected ‘dma_addr_t *’ but argument is of type ‘u32 *’

For the record, dbri(sbus) driver never executes on sun4v. Therefore
even though 64bit DMA is enabled on SPARC, dbri continues to use
legacy iommu that guarantees DMA address is always in 32bit range.

This patch resolves above compiler warning.
Signed-off-by: NTushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: Nthomas tai <thomas.tai@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      16f46050
    • T
      qlogicpti: Fix compiler warnings · e58566b1
      由 Tushar Dave 提交于 
      qlogicpti uses '__u32' for dma handle while invoking kernel DMA APIs,
instead of using dma_addr_t. This hasn't caused any 'incompatible
pointer type' warning on SPARC because until now dma_addr_t is of
type u32. However, recent changes in SPARC ATU (iommu) enabled 64bit
DMA and therefore dma_addr_t became of type u64. This makes
'incompatible pointer type' warnings inevitable.

e.g.
drivers/scsi/qlogicpti.c: In function ‘qpti_map_queues’:
drivers/scsi/qlogicpti.c:813: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’
drivers/scsi/qlogicpti.c:822: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’

For the record, qlogicpti never executes on sun4v. Therefore even
though 64bit DMA is enabled on SPARC, qlogicpti continues to use
legacy iommu that guarantees DMA address is always in 32bit range.

This patch resolves aforementioned compiler warnings.
Signed-off-by: NTushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: Nthomas tai <thomas.tai@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e58566b1
    • V
      ARC: mm: IOC: Don't enable IOC by default · 23cb1f64
      由 Vineet Gupta 提交于 
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      23cb1f64
    • V
      ARC: Don't use "+l" inline asm constraint · 3c7c7a2f
      由 Vineet Gupta 提交于 
      Apparenty this is coming in the way of gcc fix which inhibits the usage
of LP_COUNT as a gpr.

Cc: stable@vger.kernel.org
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      3c7c7a2f
  11. 28 11月, 2016 3 次提交
  13. 27 11月, 2016 3 次提交