1. 10 Mar, 2018 6 commits
    • Daniel Vacek's avatar
      mm/page_alloc: fix memmap_init_zone pageblock alignment · 864b75f9
      Daniel Vacek authored
      Commit b92df1de ("mm: page_alloc: skip over regions of invalid pfns
      where possible") introduced a bug where move_freepages() triggers a
      VM_BUG_ON() on uninitialized page structure due to pageblock alignment.
      To fix this, simply align the skipped pfns in memmap_init_zone() the
      same way as in move_freepages_block().
      
      Seen in one of the RHEL reports:
      
        crash> log | grep -e BUG -e RIP -e Call.Trace -e move_freepages_block -e rmqueue -e freelist -A1
        kernel BUG at mm/page_alloc.c:1389!
        invalid opcode: 0000 [#1] SMP
        --
        RIP: 0010:[<ffffffff8118833e>]  [<ffffffff8118833e>] move_freepages+0x15e/0x160
        RSP: 0018:ffff88054d727688  EFLAGS: 00010087
        --
        Call Trace:
         [<ffffffff811883b3>] move_freepages_block+0x73/0x80
         [<ffffffff81189e63>] __rmqueue+0x263/0x460
         [<ffffffff8118c781>] get_page_from_freelist+0x7e1/0x9e0
         [<ffffffff8118caf6>] __alloc_pages_nodemask+0x176/0x420
        --
        RIP  [<ffffffff8118833e>] move_freepages+0x15e/0x160
         RSP <ffff88054d727688>
      
        crash> page_init_bug -v | grep RAM
        <struct resource 0xffff88067fffd2f8>          1000 -        9bfff	System RAM (620.00 KiB)
        <struct resource 0xffff88067fffd3a0>        100000 -     430bffff	System RAM (  1.05 GiB = 1071.75 MiB = 1097472.00 KiB)
        <struct resource 0xffff88067fffd410>      4b0c8000 -     4bf9cfff	System RAM ( 14.83 MiB = 15188.00 KiB)
        <struct resource 0xffff88067fffd480>      4bfac000 -     646b1fff	System RAM (391.02 MiB = 400408.00 KiB)
        <struct resource 0xffff88067fffd560>      7b788000 -     7b7fffff	System RAM (480.00 KiB)
        <struct resource 0xffff88067fffd640>     100000000 -    67fffffff	System RAM ( 22.00 GiB)
      
        crash> page_init_bug | head -6
        <struct resource 0xffff88067fffd560>      7b788000 -     7b7fffff	System RAM (480.00 KiB)
        <struct page 0xffffea0001ede200>   1fffff00000000  0 <struct pglist_data 0xffff88047ffd9000> 1 <struct zone 0xffff88047ffd9800> DMA32          4096    1048575
        <struct page 0xffffea0001ede200> 505736 505344 <struct page 0xffffea0001ed8000> 505855 <struct page 0xffffea0001edffc0>
        <struct page 0xffffea0001ed8000>                0  0 <struct pglist_data 0xffff88047ffd9000> 0 <struct zone 0xffff88047ffd9000> DMA               1       4095
        <struct page 0xffffea0001edffc0>   1fffff00000400  0 <struct pglist_data 0xffff88047ffd9000> 1 <struct zone 0xffff88047ffd9800> DMA32          4096    1048575
        BUG, zones differ!
      
      Note that this range follows two not populated sections
      68000000-77ffffff in this zone.  7b788000-7b7fffff is the first one
      after a gap.  This makes memmap_init_zone() skip all the pfns up to the
      beginning of this range.  But this range is not pageblock (2M) aligned.
      In fact no range has to be.
      
        crash> kmem -p 77fff000 78000000 7b5ff000 7b600000 7b787000 7b788000
              PAGE        PHYSICAL      MAPPING       INDEX CNT FLAGS
        ffffea0001e00000  78000000                0        0  0 0
        ffffea0001ed7fc0  7b5ff000                0        0  0 0
        ffffea0001ed8000  7b600000                0        0  0 0	<<<<
        ffffea0001ede1c0  7b787000                0        0  0 0
        ffffea0001ede200  7b788000                0        0  1 1fffff00000000
      
      Top part of page flags should contain nodeid and zonenr, which is not
      the case for page ffffea0001ed8000 here (<<<<).
      
        crash> log | grep -o fffea0001ed[^\ ]* | sort -u
        fffea0001ed8000
        fffea0001eded20
        fffea0001edffc0
      
        crash> bt -r | grep -o fffea0001ed[^\ ]* | sort -u
        fffea0001ed8000
        fffea0001eded00
        fffea0001eded20
        fffea0001edffc0
      
      Initialization of the whole beginning of the section is skipped up to
      the start of the range due to the commit b92df1de.  Now any code
      calling move_freepages_block() (like reusing the page from a freelist as
      in this example) with a page from the beginning of the range will get
      the page rounded down to start_page ffffea0001ed8000 and passed to
      move_freepages() which crashes on assertion getting wrong zonenr.
      
        >         VM_BUG_ON(page_zone(start_page) != page_zone(end_page));
      
      Note, page_zone() derives the zone from page flags here.
      
      From similar machine before commit b92df1de:
      
        crash> kmem -p 77fff000 78000000 7b5ff000 7b600000 7b7fe000 7b7ff000
              PAGE        PHYSICAL      MAPPING       INDEX CNT FLAGS
        fffff73941e00000  78000000                0        0  1 1fffff00000000
        fffff73941ed7fc0  7b5ff000                0        0  1 1fffff00000000
        fffff73941ed8000  7b600000                0        0  1 1fffff00000000
        fffff73941edff80  7b7fe000                0        0  1 1fffff00000000
        fffff73941edffc0  7b7ff000 ffff8e67e04d3ae0     ad84  1 1fffff00020068 uptodate,lru,active,mappedtodisk
      
      All the pages since the beginning of the section are initialized.
      move_freepages()' not gonna blow up.
      
      The same machine with this fix applied:
      
        crash> kmem -p 77fff000 78000000 7b5ff000 7b600000 7b7fe000 7b7ff000
              PAGE        PHYSICAL      MAPPING       INDEX CNT FLAGS
        ffffea0001e00000  78000000                0        0  0 0
        ffffea0001e00000  7b5ff000                0        0  0 0
        ffffea0001ed8000  7b600000                0        0  1 1fffff00000000
        ffffea0001edff80  7b7fe000                0        0  1 1fffff00000000
        ffffea0001edffc0  7b7ff000 ffff88017fb13720        8  2 1fffff00020068 uptodate,lru,active,mappedtodisk
      
      At least the bare minimum of pages is initialized preventing the crash
      as well.
      
      Customers started to report this as soon as 7.4 (where b92df1de was
      merged in RHEL) was released.  I remember reports from
      September/October-ish times.  It's not easily reproduced and happens on
      a handful of machines only.  I guess that's why.  But that does not make
      it less serious, I think.
      
      Though there actually is a report here:
        https://bugzilla.kernel.org/show_bug.cgi?id=196443
      
      And there are reports for Fedora from July:
        https://bugzilla.redhat.com/show_bug.cgi?id=1473242
      and CentOS:
        https://bugs.centos.org/view.php?id=13964
      and we internally track several dozens reports for RHEL bug
        https://bugzilla.redhat.com/show_bug.cgi?id=1525121
      
      Link: http://lkml.kernel.org/r/0485727b2e82da7efbce5f6ba42524b429d0391a.1520011945.git.neelx@redhat.com
      Fixes: b92df1de ("mm: page_alloc: skip over regions of invalid pfns where possible")
      Signed-off-by: default avatarDaniel Vacek <neelx@redhat.com>
      Cc: Mel Gorman <mgorman@techsingularity.net>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Paul Burton <paul.burton@imgtec.com>
      Cc: Pavel Tatashin <pasha.tatashin@oracle.com>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      864b75f9
    • Daniel Vacek's avatar
      mm/memblock.c: hardcode the end_pfn being -1 · 379b03b7
      Daniel Vacek authored
      This is just a cleanup.  It aids handling the special end case in the
      next commit.
      
      [akpm@linux-foundation.org: make it work against current -linus, not against -mm]
      [akpm@linux-foundation.org: make it work against current -linus, not against -mm some more]
      Link: http://lkml.kernel.org/r/1ca478d4269125a99bcfb1ca04d7b88ac1aee924.1520011944.git.neelx@redhat.comSigned-off-by: default avatarDaniel Vacek <neelx@redhat.com>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Cc: Mel Gorman <mgorman@techsingularity.net>
      Cc: Pavel Tatashin <pasha.tatashin@oracle.com>
      Cc: Paul Burton <paul.burton@imgtec.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      379b03b7
    • Andrea Arcangeli's avatar
      mm/gup.c: teach get_user_pages_unlocked to handle FOLL_NOWAIT · 96312e61
      Andrea Arcangeli authored
      KVM is hanging during postcopy live migration with userfaultfd because
      get_user_pages_unlocked is not capable to handle FOLL_NOWAIT.
      
      Earlier FOLL_NOWAIT was only ever passed to get_user_pages.
      
      Specifically faultin_page (the callee of get_user_pages_unlocked caller)
      doesn't know that if FAULT_FLAG_RETRY_NOWAIT was set in the page fault
      flags, when VM_FAULT_RETRY is returned, the mmap_sem wasn't actually
      released (even if nonblocking is not NULL).  So it sets *nonblocking to
      zero and the caller won't release the mmap_sem thinking it was already
      released, but it wasn't because of FOLL_NOWAIT.
      
      Link: http://lkml.kernel.org/r/20180302174343.5421-2-aarcange@redhat.com
      Fixes: ce53053c ("kvm: switch get_user_page_nowait() to get_user_pages_unlocked()")
      Signed-off-by: default avatarAndrea Arcangeli <aarcange@redhat.com>
      Reported-by: default avatarDr. David Alan Gilbert <dgilbert@redhat.com>
      Tested-by: default avatarDr. David Alan Gilbert <dgilbert@redhat.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      96312e61
    • Kees Cook's avatar
      lib/bug.c: exclude non-BUG/WARN exceptions from report_bug() · 1b4cfe3c
      Kees Cook authored
      Commit b8347c21 ("x86/debug: Handle warnings before the notifier
      chain, to fix KGDB crash") changed the ordering of fixups, and did not
      take into account the case of x86 processing non-WARN() and non-BUG()
      exceptions.  This would lead to output of a false BUG line with no other
      information.
      
      In the case of a refcount exception, it would be immediately followed by
      the refcount WARN(), producing very strange double-"cut here":
      
        lkdtm: attempting bad refcount_inc() overflow
        ------------[ cut here ]------------
        Kernel BUG at 0000000065f29de5 [verbose debug info unavailable]
        ------------[ cut here ]------------
        refcount_t overflow at lkdtm_REFCOUNT_INC_OVERFLOW+0x6b/0x90 in cat[3065], uid/euid: 0/0
        WARNING: CPU: 0 PID: 3065 at kernel/panic.c:657 refcount_error_report+0x9a/0xa4
        ...
      
      In the prior ordering, exceptions were searched first:
      
         do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
         ...
                      if (fixup_exception(regs, trapnr))
                              return 0;
      
        -               if (fixup_bug(regs, trapnr))
        -                       return 0;
        -
      
      As a result, fixup_bugs()'s is_valid_bugaddr() didn't take into account
      needing to search the exception list first, since that had already
      happened.
      
      So, instead of searching the exception list twice (once in
      is_valid_bugaddr() and then again in fixup_exception()), just add a
      simple sanity check to report_bug() that will immediately bail out if a
      BUG() (or WARN()) entry is not found.
      
      Link: http://lkml.kernel.org/r/20180301225934.GA34350@beast
      Fixes: b8347c21 ("x86/debug: Handle warnings before the notifier chain, to fix KGDB crash")
      Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Richard Weinberger <richard.weinberger@gmail.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1b4cfe3c
    • Kees Cook's avatar
      bug: use %pB in BUG and stack protector failure · 0862ca42
      Kees Cook authored
      The BUG and stack protector reports were still using a raw %p.  This
      changes it to %pB for more meaningful output.
      
      Link: http://lkml.kernel.org/r/20180301225704.GA34198@beast
      Fixes: ad67b74d ("printk: hash addresses printed with %p")
      Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Richard Weinberger <richard.weinberger@gmail.com>,
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0862ca42
    • Michal Hocko's avatar
      hugetlb: fix surplus pages accounting · 4704dea3
      Michal Hocko authored
      Dan Rue has noticed that libhugetlbfs test suite fails counter test:
      
        # mount_point="/mnt/hugetlb/"
        # echo 200 > /proc/sys/vm/nr_hugepages
        # mkdir -p "${mount_point}"
        # mount -t hugetlbfs hugetlbfs "${mount_point}"
        # export LD_LIBRARY_PATH=/root/libhugetlbfs/libhugetlbfs-2.20/obj64
        # /root/libhugetlbfs/libhugetlbfs-2.20/tests/obj64/counters
        Starting testcase "/root/libhugetlbfs/libhugetlbfs-2.20/tests/obj64/counters", pid 3319
        Base pool size: 0
        Clean...
        FAIL    Line 326: Bad HugePages_Total: expected 0, actual 1
      
      The bug was bisected to 0c397dae ("mm, hugetlb: further simplify
      hugetlb allocation API").
      
      The reason is that alloc_surplus_huge_page() misaccounts per node
      surplus pages.  We should increase surplus_huge_pages_node rather than
      nr_huge_pages_node which is already handled by alloc_fresh_huge_page.
      
      Link: http://lkml.kernel.org/r/20180221191439.GM2231@dhcp22.suse.cz
      Fixes: 0c397dae ("mm, hugetlb: further simplify hugetlb allocation API")
      Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
      Reported-by: default avatarDan Rue <dan.rue@linaro.org>
      Tested-by: default avatarDan Rue <dan.rue@linaro.org>
      Reviewed-by: default avatarMike Kravetz <mike.kravetz@oracle.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4704dea3
  2. 09 Mar, 2018 3 commits
    • Linus Torvalds's avatar
      Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs · 719ea861
      Linus Torvalds authored
      Pull overlayfs fixes from Miklos Szeredi:
       "This fixes a corner case for NFS exporting (introduced in this cycle)
        as well as fixing miscellaneous bugs"
      
      * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
        ovl: update Kconfig texts
        ovl: redirect_dir=nofollow should not follow redirect for opaque lower
        ovl: fix ptr_ret.cocci warnings
        ovl: check ERR_PTR() return value from ovl_lookup_real()
        ovl: check lower ancestry on encode of lower dir file handle
        ovl: hash non-dir by lower inode for fsnotify
      719ea861
    • Linus Torvalds's avatar
      Merge tag 'xfs-4.16-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 2d9b1d69
      Linus Torvalds authored
      Pull xfs fixes from Darrick Wong:
      
       - Fix some iomap locking problems
      
       - Don't allocate cow blocks when we're zeroing file data
      
      * tag 'xfs-4.16-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
        xfs: don't block on the ilock for RWF_NOWAIT
        xfs: don't start out with the exclusive ilock for direct I/O
        xfs: don't allocate COW blocks for zeroing holes or unwritten extents
      2d9b1d69
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.16-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · a525df05
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "One notable fix to properly advertise our support for a new firmware
        feature, caused by two series conflicting semantically but not
        textually.
      
        There's a new ioctl for the new ocxl driver, which is not a fix, but
        needed to complete the userspace API and good to have before the
        driver is in a released kernel.
      
        Finally three minor selftest fixes, and a fix for intermittent build
        failures for some obscure platforms, caused by a missing make
        dependency.
      
        Thanks to: Alastair D'Silva, Bharata B Rao, Guenter Roeck"
      
      * tag 'powerpc-4.16-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/pseries: Fix vector5 in ibm architecture vector table
        ocxl: Document the OCXL_IOCTL_GET_METADATA IOCTL
        ocxl: Add get_metadata IOCTL to share OCXL information to userspace
        selftests/powerpc: Skip the subpage_prot tests if the syscall is unavailable
        selftests/powerpc: Fix missing clean of pmu/lib.o
        powerpc/boot: Fix random libfdt related build errors
        selftests/powerpc: Skip tm-trap if transactional memory is not enabled
      a525df05
  3. 08 Mar, 2018 5 commits
  4. 07 Mar, 2018 8 commits
    • Arkadiusz Hiler's avatar
      Revert "Input: synaptics - Lenovo Thinkpad T460p devices should use RMI" · 5444a992
      Arkadiusz Hiler authored
      This reverts commit 48282969 which
      caused the following issues:
      
      1. On T460p with BIOS version 2.22 touchpad and trackpoint stop working
      after suspend-resume cycle. Due to strange state of the device another
      suspend is impossible.
      
      The following dmesg errors can be observed:
      thinkpad_acpi: EC reports that Thermal Table has changed
      rmi4_smbus 7-002c: failed to get SMBus version number!
      rmi4_physical rmi4-00: rmi_driver_reset_handler: Failed to read current IRQ mask.
      rmi4_f01 rmi4-00.fn01: Failed to restore normal operation: -16.
      rmi4_f01 rmi4-00.fn01: Resume failed with code -16.
      rmi4_physical rmi4-00: Failed to suspend functions: -16
      rmi4_smbus 7-002c: Failed to resume device: -16
      PM: resume devices took 0.640 seconds
      rmi4_f03 rmi4-00.fn03: rmi_f03_pt_write: Failed to write to F03 TX register (-16).
      rmi4_physical rmi4-00: rmi_driver_clear_irq_bits: Failed to change enabled interrupts!
      rmi4_physical rmi4-00: rmi_driver_set_irq_bits: Failed to change enabled interrupts!
      psmouse: probe of serio3 failed with error -1
      
      2. On another T460p with BIOS version 2.15 two finger scrolling gesture
      on the touchpad stops working after suspend-resume cycle (about 75%
      reproducibility, when it still works, the scrolling gesture becomes
      laggy). Nothing suspicious appears in the dmesg.
      
      Analysis form Richard Schütz:
      
      "RMI is unreliable on the ThinkPad T460p because the device is affected
      by the firmware behavior addressed in a7ae8195 ("i2c: i801: Allow
      ACPI SystemIO OpRegion to conflict with PCI BAR")."
      
      The affected devices often show:
      
      i801_smbus 0000:00:1f.4: BIOS is accessing SMBus registers
      i801_smbus 0000:00:1f.4: Driver SMBus register access inhibited
      Reported-by: default avatarRichard Schütz <rschuetz@uni-koblenz.de>
      Signed-off-by: default avatarArkadiusz Hiler <arkadiusz.hiler@intel.com>
      Tested-by: default avatarMartin Peres <martin.peres@linux.intel.com>
      Tested-by: default avatarArkadiusz Hiler <arkadiusz.hiler@intel.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
      5444a992
    • Linus Torvalds's avatar
      Merge tag 'gfs2-4.16.rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 · ea9b5ee3
      Linus Torvalds authored
      Pull gfs2 fix from Bob Peterson:
       "An additional patch from Andreas Gruenbacher that fixes another
        unfortunate GFS2 regression"
      
      * tag 'gfs2-4.16.rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
        gfs2: Fixes to "Implement iomap for block_map" (2)
      ea9b5ee3
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 69f39c57
      Linus Torvalds authored
      Pull s390 fixes from Martin Schwidefsky:
       "Nine bug fixes for s390:
      
         - Three fixes for the expoline code, one of them is strictly speaking
           a cleanup but as it relates to code added with 4.16 I would like to
           include the patch.
      
         - Three timer related fixes in the common I/O layer
      
         - A fix for the handling of internal DASD request which could cause
           panics.
      
         - One correction in regard to the accounting of pud page tables vs.
           compat tasks.
      
         - The register scrubbing in entry.S caused spurious crashes, this is
           fixed now as well"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390/entry.S: fix spurious zeroing of r0
        s390: Fix runtime warning about negative pgtables_bytes
        s390: do not bypass BPENTER for interrupt system calls
        s390/cio: clear timer when terminating driver I/O
        s390/cio: fix return code after missing interrupt
        s390/cio: fix ccw_device_start_timeout API
        s390/clean-up: use CFI_* macros in entry.S
        s390: Replace IS_ENABLED(EXPOLINE_*) with IS_ENABLED(CONFIG_EXPOLINE_*)
        s390/dasd: fix handling of internal requests
      69f39c57
    • Linus Torvalds's avatar
      Merge tag 'regulator-fix-v4.16-rc4' of... · b910a918
      Linus Torvalds authored
      Merge tag 'regulator-fix-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
      
      Pull regulator fixes from Mark Brown:
       "A couple of fixes here:
      
         - another half of the supend to idle fix from Geert that went in
           earlier, both he and I are confused as to why he didn't notice that
           this was missing when his earlier fix was merged.
      
         - a simple fix for a test done the wrong way round in the
           stm32-vrefbuf driver"
      
      * tag 'regulator-fix-v4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
        regulator: Fix resume from suspend to idle
        regulator: stm32-vrefbuf: fix check on ready flag
      b910a918
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · be75b1b8
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "This is mostly fixes for driver specific issues (nine of them) and the
        storvsc performance improvement with interrupt handling which was
        dropped from the previous fixes pull request.
      
        We also have two regressions: one is a double call_rcu() in ATA error
        handling and the other is a missed conversion to BLK_STS_OK in
        __scsi_error_from_host_byte()"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: qedi: Fix kernel crash during port toggle
        scsi: qla2xxx: Fix FC-NVMe LUN discovery
        scsi: core: return BLK_STS_OK for DID_OK in __scsi_error_from_host_byte()
        scsi: core: Avoid that ATA error handling can trigger a kernel hang or oops
        scsi: qla2xxx: ensure async flags are reset correctly
        scsi: qla2xxx: do not check login_state if no loop id is assigned
        scsi: qla2xxx: Fixup locking for session deletion
        scsi: qla2xxx: Fix NULL pointer crash due to active timer for ABTS
        scsi: mpt3sas: wait for and flush running commands on shutdown/unload
        scsi: mpt3sas: fix oops in error handlers after shutdown/unload
        scsi: storvsc: Spread interrupts when picking a channel for I/O requests
        scsi: megaraid_sas: Do not use 32-bit atomic request descriptor for Ventura controllers
      be75b1b8
    • Andreas Gruenbacher's avatar
      gfs2: Fixes to "Implement iomap for block_map" (2) · 3b5da96e
      Andreas Gruenbacher authored
      It turns out that commit 3229c18c0d6b2 'Fixes to "Implement iomap for
      block_map"' introduced another bug in gfs2_iomap_begin that can cause
      gfs2_block_map to set bh->b_size of an actual buffer to 0.  This can
      lead to arbitrary incorrect behavior including crashes or disk
      corruption.  Revert the incorrect part of that commit.
      Signed-off-by: default avatarAndreas Gruenbacher <agruenba@redhat.com>
      Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
      3b5da96e
    • Mark Brown's avatar
      Merge remote-tracking branches 'regulator/fix/resume' and... · 82a917c5
      Mark Brown authored
      Merge remote-tracking branches 'regulator/fix/resume' and 'regulator/fix/stm32-vfrefbuf' into regulator-linus
      82a917c5
    • Miklos Szeredi's avatar
      ovl: update Kconfig texts · 36cd95df
      Miklos Szeredi authored
      Add some hints about overlayfs kernel config options.
      
      Enabling NFS export by default is especially recommended against, as it
      incurs a performance penalty even if the filesystem is not actually
      exported.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      36cd95df
  5. 06 Mar, 2018 6 commits
  6. 05 Mar, 2018 12 commits