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  1. 02 Dec, 2016 2 commits
    • Arnd Bergmann's avatar
      default exported asm symbols to zero · 8ab2ae65
      Arnd Bergmann authored 
      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: default avatarArnd Bergmann <arnd@arndb.de>
Tested-by: default avatarAdam Borowski <kilobyte@angband.pl>
Cc: stable@kernel.org
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8ab2ae65
    • Linus Torvalds's avatar
      Merge tag 'pci-v4.9-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · 4db5e636
      Linus Torvalds authored 
      Pull PCI fixes from Bjorn Helgaas:
 "PCI fixes:

   - Fix Read Completion Boundary setting, which fixes a boot failure on
     IBM x3850 with Mellanox MT27500 ConnectX-3

   - Update some MAINTAINERS entries and email addresses"

* tag 'pci-v4.9-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Set Read Completion Boundary to 128 iff Root Port supports it (_HPX)
  PCI: Export pcie_find_root_port
  PCI: designware-plat: Update author email
  PCI: designware: Change maintainer to Joao Pinto
  MAINTAINERS: Add devicetree binding to PCI i.MX6 entry
  MAINTAINERS: Update Richard Zhu's email address
      4db5e636
  3. 01 Dec, 2016 11 commits
  5. 30 Nov, 2016 6 commits
  7. 29 Nov, 2016 9 commits
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 22d3d4fb
      Linus Torvalds authored 
      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
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · ab59d1f4
      Linus Torvalds authored 
      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
    • Yuriy Kolerov's avatar
      ARC: mm: PAE40: Fix crash at munmap · 6a8b2ca7
      Yuriy Kolerov authored 
      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: default avatarYuriy Kolerov <yuriy.kolerov@synopsys.com>
[vgupta: massaged changelog]
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
      6a8b2ca7
    • Aaron Lu's avatar
      mremap: move_ptes: check pte dirty after its removal · a2ce2666
      Aaron Lu authored 
      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: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: default avatarAaron Lu <aaron.lu@intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a2ce2666
    • Johan Hovold's avatar
      pwm: Fix device reference leak · 0e1614ac
      Johan Hovold authored 
      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: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
      0e1614ac
    • Miklos Szeredi's avatar
      ovl: fix d_real() for stacked fs · c4fcfc16
      Miklos Szeredi authored 
      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: default avatarQuentin Casasnovas <quentin.casasnovas@oracle.com>
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
Fixes: 2d902671 ("vfs: merge .d_select_inode() into .d_real()")
Cc: <stable@vger.kernel.org> # v4.8+
      c4fcfc16
    • Eryu Guan's avatar
      CIFS: iterate over posix acl xattr entry correctly in ACL_to_cifs_posix() · ae9ebe7c
      Eryu Guan authored 
      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: default avatarEryu Guan <guaneryu@gmail.com>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
      ae9ebe7c
    • Sachin Prabhu's avatar
      Call echo service immediately after socket reconnect · b8c60012
      Sachin Prabhu authored 
      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: default avatarSachin Prabhu <sprabhu@redhat.com>
Reviewed-by: default avatarPavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
      b8c60012
    • Sachin Prabhu's avatar
      CIFS: Fix BUG() in calc_seckey() · 5f4b5569
      Sachin Prabhu authored 
      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: default avatarSachin Prabhu <sprabhu@redhat.com>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
Reviewed-by: default avatarJeff Layton <jlayton@redhat.com>
      5f4b5569
  9. 28 Nov, 2016 6 commits
    • Linus Torvalds's avatar
      Merge branch 'for-4.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata · 88abd824
      Linus Torvalds authored 
      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
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 96e52d3a
      Linus Torvalds authored 
      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
    • Tushar Dave's avatar
      dbri: Fix compiler warning · 16f46050
      Tushar Dave authored 
      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: default avatarTushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: default avatarthomas tai <thomas.tai@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      16f46050
    • Tushar Dave's avatar
      qlogicpti: Fix compiler warnings · e58566b1
      Tushar Dave authored 
      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: default avatarTushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: default avatarthomas tai <thomas.tai@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e58566b1
    • Vineet Gupta's avatar
      ARC: mm: IOC: Don't enable IOC by default · 23cb1f64
      Vineet Gupta authored 
      Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
      23cb1f64
    • Vineet Gupta's avatar
      ARC: Don't use "+l" inline asm constraint · 3c7c7a2f
      Vineet Gupta authored 
      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: default avatarVineet Gupta <vgupta@synopsys.com>
      3c7c7a2f
  11. 27 Nov, 2016 5 commits
  13. 26 Nov, 2016 1 commit
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