1. 06 Nov, 2011 2 commits
  2. 24 Oct, 2011 8 commits
  3. 23 Oct, 2011 3 commits
  4. 21 Oct, 2011 5 commits
    • Domenico Andreoli's avatar
      ARM: S3C24XX: Fix s3c24xx build errors if !CONFIG_PM · fb630b9f
      Domenico Andreoli authored
      v2:
      - register_syscore_ops(&s3c24xx_irq_syscore_ops) does not need to be
        conditionally compiled out, it is already optimized out on !CONFIG_PM
      - fix also s3c2412 and s3c2416 affected by the same build issue
      
      v1:
      s3c2440.c fails to build if !CONFIG_PM because in such case
      s3c2410_pm_syscore_ops is not defined. Same error should happen also
      in s3c2410.c and s3c2442.c
      Signed-off-by: default avatarDomenico Andreoli <cavokz@gmail.com>
      Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
      fb630b9f
    • Linus Torvalds's avatar
      Merge git://github.com/herbertx/crypto · 2efd7c0f
      Linus Torvalds authored
      * git://github.com/herbertx/crypto:
        crypto: ghash - Avoid null pointer dereference if no key is set
      2efd7c0f
    • Linus Torvalds's avatar
      Merge branch 'fix/hda' of git://github.com/tiwai/sound · 62ddc004
      Linus Torvalds authored
      * 'fix/hda' of git://github.com/tiwai/sound:
        ALSA: HDA: conexant support for Lenovo T520/W520
        ALSA: hda - Add position_fix quirk for Dell Inspiron 1010
      62ddc004
    • Nick Bowler's avatar
      crypto: ghash - Avoid null pointer dereference if no key is set · 7ed47b7d
      Nick Bowler authored
      The ghash_update function passes a pointer to gf128mul_4k_lle which will
      be NULL if ghash_setkey is not called or if the most recent call to
      ghash_setkey failed to allocate memory.  This causes an oops.  Fix this
      up by returning an error code in the null case.
      
      This is trivially triggered from unprivileged userspace through the
      AF_ALG interface by simply writing to the socket without setting a key.
      
      The ghash_final function has a similar issue, but triggering it requires
      a memory allocation failure in ghash_setkey _after_ at least one
      successful call to ghash_update.
      
        BUG: unable to handle kernel NULL pointer dereference at 00000670
        IP: [<d88c92d4>] gf128mul_4k_lle+0x23/0x60 [gf128mul]
        *pde = 00000000
        Oops: 0000 [#1] PREEMPT SMP
        Modules linked in: ghash_generic gf128mul algif_hash af_alg nfs lockd nfs_acl sunrpc bridge ipv6 stp llc
      
        Pid: 1502, comm: hashatron Tainted: G        W   3.1.0-rc9-00085-ge9308cfd #32 Bochs Bochs
        EIP: 0060:[<d88c92d4>] EFLAGS: 00000202 CPU: 0
        EIP is at gf128mul_4k_lle+0x23/0x60 [gf128mul]
        EAX: d69db1f0 EBX: d6b8ddac ECX: 00000004 EDX: 00000000
        ESI: 00000670 EDI: d6b8ddac EBP: d6b8ddc8 ESP: d6b8dda4
         DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
        Process hashatron (pid: 1502, ti=d6b8c000 task=d6810000 task.ti=d6b8c000)
        Stack:
         00000000 d69db1f0 00000163 00000000 d6b8ddc8 c101a520 d69db1f0 d52aa000
         00000ff0 d6b8dde8 d88d310f d6b8a3f8 d52aa000 00001000 d88d502c d6b8ddfc
         00001000 d6b8ddf4 c11676ed d69db1e8 d6b8de24 c11679ad d52aa000 00000000
        Call Trace:
         [<c101a520>] ? kmap_atomic_prot+0x37/0xa6
         [<d88d310f>] ghash_update+0x85/0xbe [ghash_generic]
         [<c11676ed>] crypto_shash_update+0x18/0x1b
         [<c11679ad>] shash_ahash_update+0x22/0x36
         [<c11679cc>] shash_async_update+0xb/0xd
         [<d88ce0ba>] hash_sendpage+0xba/0xf2 [algif_hash]
         [<c121b24c>] kernel_sendpage+0x39/0x4e
         [<d88ce000>] ? 0xd88cdfff
         [<c121b298>] sock_sendpage+0x37/0x3e
         [<c121b261>] ? kernel_sendpage+0x4e/0x4e
         [<c10b4dbc>] pipe_to_sendpage+0x56/0x61
         [<c10b4e1f>] splice_from_pipe_feed+0x58/0xcd
         [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10
         [<c10b51f5>] __splice_from_pipe+0x36/0x55
         [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10
         [<c10b6383>] splice_from_pipe+0x51/0x64
         [<c10b63c2>] ? default_file_splice_write+0x2c/0x2c
         [<c10b63d5>] generic_splice_sendpage+0x13/0x15
         [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10
         [<c10b527f>] do_splice_from+0x5d/0x67
         [<c10b6865>] sys_splice+0x2bf/0x363
         [<c129373b>] ? sysenter_exit+0xf/0x16
         [<c104dc1e>] ? trace_hardirqs_on_caller+0x10e/0x13f
         [<c129370c>] sysenter_do_call+0x12/0x32
        Code: 83 c4 0c 5b 5e 5f c9 c3 55 b9 04 00 00 00 89 e5 57 8d 7d e4 56 53 8d 5d e4 83 ec 18 89 45 e0 89 55 dc 0f b6 70 0f c1 e6 04 01 d6 <f3> a5 be 0f 00 00 00 4e 89 d8 e8 48 ff ff ff 8b 45 e0 89 da 0f
        EIP: [<d88c92d4>] gf128mul_4k_lle+0x23/0x60 [gf128mul] SS:ESP 0068:d6b8dda4
        CR2: 0000000000000670
        ---[ end trace 4eaa2a86a8e2da24 ]---
        note: hashatron[1502] exited with preempt_count 1
        BUG: scheduling while atomic: hashatron/1502/0x10000002
        INFO: lockdep is turned off.
        [...]
      Signed-off-by: default avatarNick Bowler <nbowler@elliptictech.com>
      Cc: stable@kernel.org [2.6.37+]
      Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      7ed47b7d
    • Marek Szyprowski's avatar
      ARM: S5P: fix offset calculation on gpio-interrupt · 1052cff3
      Marek Szyprowski authored
      Offsets of the irq controller registers were calculated
      correctly only for first GPIO bank. This patch fixes
      calculation of the register offsets for all GPIO banks.
      Reported-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
      Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
      Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
      1052cff3
  5. 20 Oct, 2011 22 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · fd11e153
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc: Add alignment flag to PCI expansion resources
        sparc: Avoid calling sigprocmask()
        sparc: Use set_current_blocked()
        sparc32,leon: SRMMU MMU Table probe fix
      fd11e153
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 505f48b5
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        fib_rules: fix unresolved_rules counting
        r8169: fix wrong eee setting for rlt8111evl
        r8169: fix driver shutdown WoL regression.
        ehea: Change maintainer to me
        pptp: pptp_rcv_core() misses pskb_may_pull() call
        tproxy: copy transparent flag when creating a time wait
        pptp: fix skb leak in pptp_xmit()
        bonding: use local function pointer of bond->recv_probe in bond_handle_frame
        smsc911x: Add support for SMSC LAN89218
        tg3: negate USE_PHYLIB flag check
        netconsole: enable netconsole can make net_device refcnt incorrent
        bluetooth: Properly clone LSM attributes to newly created child connections
        l2tp: fix a potential skb leak in l2tp_xmit_skb()
        bridge: fix hang on removal of bridge via netlink
        x25: Prevent skb overreads when checking call user data
        x25: Handle undersized/fragmented skbs
        x25: Validate incoming call user data lengths
        udplite: fast-path computation of checksum coverage
        IPVS netns shutdown/startup dead-lock
        netfilter: nf_conntrack: fix event flooding in GRE protocol tracker
      505f48b5
    • Ilya Dryomov's avatar
      Btrfs: close all bdevs on mount failure · 20bcd649
      Ilya Dryomov authored
      Fix a bug introduced by 20b45077.  We have to return EINVAL on mount
      failure, but doing that too early in the sequence leaves all of the
      devices opened exclusively.  This also fixes an issue where under some
      scenarios only a second mount -o degraded <devices> command would
      succeed.
      Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
      20bcd649
    • Ilya Dryomov's avatar
      Btrfs: fix a bug when opening seed devices · 5f524444
      Ilya Dryomov authored
      Initialize fs_info->bdev_holder a bit earlier to be able to pass a
      correct holder id to blkdev_get() when opening seed devices with O_EXCL.
      Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
      5f524444
    • Daniel J Blueman's avatar
      btrfs: fix oops on failure path · 068132ba
      Daniel J Blueman authored
      If lookup_extent_backref fails, path->nodes[0] reasonably could be
      null along with other callers of btrfs_print_leaf, so ensure we have a
      valid extent buffer before dereferencing.
      Signed-off-by: default avatarDaniel J Blueman <daniel.blueman@gmail.com>
      068132ba
    • Miao Xie's avatar
      Btrfs: fix race between multi-task space allocation and caching space · 60d2adbb
      Miao Xie authored
      The task may fail to get free space though it is enough when multi-task
      space allocation and caching space happen at the same time.
      
      	Task1			Caching Thread		Task2
      	------------------------------------------------------------------------
      	find_free_extent
      	  The space has not
      	  be cached, and start
      	  caching thread. And
      	  wait for it.
      				cache space, if
      				the space is > 2MB
      				wake up Task1
      							find_free_extent
      							  get all the space that
      							  is cached.
      	  try to allocate space,
      	  but there is no space
      	  now.
      	trigger BUG_ON()
      
      The message is following:
      btrfs allocation failed flags 1, wanted 4096
      space_info has 1040187392 free, is not full
      space_info total=1082130432, used=4096, pinned=41938944, reserved=0, may_use=40828928, readonly=0
      block group 12582912 has 8388608 bytes, 0 used 8388608 pinned 0 reserved
      block group has cluster?: no
      0 blocks of free space at or bigger than bytes is
      block group 1103101952 has 1073741824 bytes, 4096 used 33550336 pinned 0 reserved
      block group has cluster?: no
      0 blocks of free space at or bigger than bytes is
      ------------[ cut here ]------------
      kernel BUG at fs/btrfs/inode.c:835!
       [<ffffffffa031261b>] __extent_writepage+0x1bf/0x5ce [btrfs]
       [<ffffffff810cbcb8>] ? __set_page_dirty_nobuffers+0xfe/0x108
       [<ffffffffa02f8ada>] ? wait_current_trans+0x23/0xec [btrfs]
       [<ffffffff810c3fbf>] ? find_get_pages_tag+0x73/0xe2
       [<ffffffffa0312d12>] extent_write_cache_pages.clone.0+0x176/0x29a [btrfs]
       [<ffffffffa0312e74>] extent_writepages+0x3e/0x53 [btrfs]
       [<ffffffff8110ad2c>] ? do_sync_write+0xc6/0x103
       [<ffffffffa0302d6e>] ? btrfs_submit_direct+0x414/0x414 [btrfs]
       [<ffffffff811380fa>] ? fsnotify+0x236/0x266
       [<ffffffffa02fc930>] btrfs_writepages+0x22/0x24 [btrfs]
       [<ffffffff810cc215>] do_writepages+0x1c/0x25
       [<ffffffff810c4958>] __filemap_fdatawrite_range+0x4e/0x50
       [<ffffffff810c4982>] filemap_write_and_wait_range+0x28/0x51
       [<ffffffffa0306b2e>] btrfs_sync_file+0x7d/0x198 [btrfs]
       [<ffffffff8110aa26>] ? fsnotify_modify+0x5d/0x65
       [<ffffffff8112d150>] vfs_fsync_range+0x18/0x21
       [<ffffffff8112d170>] vfs_fsync+0x17/0x19
       [<ffffffff8112d316>] do_fsync+0x29/0x3e
       [<ffffffff8112d348>] sys_fsync+0xb/0xf
       [<ffffffff81468352>] system_call_fastpath+0x16/0x1b
      [SNIP]
      RIP  [<ffffffffa02fe08c>] cow_file_range+0x1c4/0x32b [btrfs]
      
      We fix this bug by trying to allocate the space again if there are block groups
      in caching.
      Signed-off-by: default avatarMiao Xie <miaox@cn.fujitsu.com>
      60d2adbb
    • Tsutomu Itoh's avatar
      Btrfs: fix return value of btrfs_get_acl() · cfbffc39
      Tsutomu Itoh authored
      In btrfs_get_acl(), when the second __btrfs_getxattr() call fails,
      acl is not correctly set.
      Therefore, a wrong value might return to the caller.
      Signed-off-by: default avatarTsutomu Itoh <t-itoh@jp.fujitsu.com>
      cfbffc39
    • Ilya Dryomov's avatar
      Btrfs: pass the correct root to lookup_free_space_inode() · 10b2f34d
      Ilya Dryomov authored
      Free space items are located in tree of tree roots, not in the extent
      tree.  It didn't pop up because lookup_free_space_inode() grabs the
      inode all the time instead of actually searching the tree.
      Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
      10b2f34d
    • Liu Bo's avatar
      fee187d9
    • Li Zefan's avatar
      Btrfs: fix direct-io vs nodatacow · f0dd9592
      Li Zefan authored
      To reproduce the bug:
      
        # mount -o nodatacow /dev/sda7 /mnt/
        # dd if=/dev/zero of=/mnt/tmp bs=4K count=1
        1+0 records in
        1+0 records out
        4096 bytes (4.1 kB) copied, 0.000136115 s, 30.1 MB/s
        # dd if=/dev/zero of=/mnt/tmp bs=4K count=1 conv=notrunc oflag=direct
        dd: writing `/mnt/tmp': Input/output error
        1+0 records in
        0+0 records out
      
      btrfs_ordered_update_i_size() may return 1, but btrfs_endio_direct_write()
      mistakenly takes it as an error.
      Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
      f0dd9592
    • Li Zefan's avatar
      Btrfs: remove BUG_ON() in compress_file_range() · 560f7d75
      Li Zefan authored
      It's not a big deal if we fail to allocate the array, and instead of
      panic we can just give up compressing.
      Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
      560f7d75
    • Li Zefan's avatar
      Btrfs: fix array bound checking · a05a9bb1
      Li Zefan authored
      Otherwise we can execced the array bound of path->slots[].
      Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
      a05a9bb1
    • Lukas Czerner's avatar
      btrfs: return EINVAL if start > total_bytes in fitrim ioctl · f4c697e6
      Lukas Czerner authored
      We should retirn EINVAL if the start is beyond the end of the file
      system in the btrfs_ioctl_fitrim(). Fix that by adding the appropriate
      check for it.
      
      Also in the btrfs_trim_fs() it is possible that len+start might overflow
      if big values are passed. Fix it by decrementing the len so that start+len
      is equal to the file system size in the worst case.
      Signed-off-by: default avatarLukas Czerner <lczerner@redhat.com>
      f4c697e6
    • Li Zefan's avatar
      Btrfs: honor extent thresh during defragmentation · 008873ea
      Li Zefan authored
      We won't defrag an extent, if it's bigger than the threshold we
      specified and there's no small extent before it, but actually
      the code doesn't work this way.
      
      There are three bugs:
      
      - When should_defrag_range() decides we should keep on defragmenting
        an extent, last_len is not incremented. (old bug)
      
      - The length that passes to should_defrag_range() is not the length
        we're going to defrag. (new bug)
      
      - We always defrag 256K bytes data, and a big extent can be part of
        this range. (new bug)
      
      For a file with 4 extents:
      
              | 4K | 4K | 256K | 256K |
      
      The result of defrag with (the default) 256K extent thresh should be:
      
              | 264K | 256K |
      
      but with those bugs, we'll get:
      
              | 520K |
      Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
      008873ea
    • Jeff Liu's avatar
    • Li Zefan's avatar
      Btrfs: fix wrong max_to_defrag in btrfs_defrag_file() · 5ca49660
      Li Zefan authored
      It's off-by-one, and thus we may skip the last page while defragmenting.
      
      An example case:
      
        # create /mnt/file with 2 4K file extents
        # btrfs fi defrag /mnt/file
        # sync
        # filefrag /mnt/file
        /mnt/file: 2 extents found
      
      So it's not defragmented.
      Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
      5ca49660
    • Li Zefan's avatar
      Btrfs: use i_size_read() in btrfs_defrag_file() · 151a31b2
      Li Zefan authored
      Don't use inode->i_size directly, since we're not holding i_mutex.
      
      This also fixes another bug, that i_size can change after it's checked
      against 0 and then (i_size - 1) can be negative.
      Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
      151a31b2
    • Li Zefan's avatar
      Btrfs: fix defragmentation regression · cbcc8326
      Li Zefan authored
      There's an off-by-one bug:
      
        # create a file with lots of 4K file extents
        # btrfs fi defrag /mnt/file
        # sync
        # filefrag -v /mnt/file
        Filesystem type is: 9123683e
        File size of /mnt/file is 1228800 (300 blocks, blocksize 4096)
         ext logical physical expected length flags
           0       0     3372              64
           1      64     3136     3435      1
           2      65     3436     3136     64
           3     129     3201     3499      1
           4     130     3500     3201     64
           5     194     3266     3563      1
           6     195     3564     3266     64
           7     259     3331     3627      1
           8     260     3628     3331     40 eof
      
      After this patch:
      
        ...
        # filefrag -v /mnt/file
        Filesystem type is: 9123683e
        File size of /mnt/file is 1228800 (300 blocks, blocksize 4096)
         ext logical physical expected length flags
           0       0     3372             300 eof
        /mnt/file: 1 extent found
      Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
      cbcc8326
    • Diego Calleja's avatar
      btrfs: fix memory leak in btrfs_defrag_file · 60ccf82f
      Diego Calleja authored
      kmemleak found this:
      unreferenced object 0xffff8801b64af968 (size 512):
        comm "btrfs-cleaner", pid 3317, jiffies 4306810886 (age 903.272s)
        hex dump (first 32 bytes):
          00 82 01 07 00 ea ff ff c0 83 01 07 00 ea ff ff  ................
          80 82 01 07 00 ea ff ff c0 87 01 07 00 ea ff ff  ................
        backtrace:
          [<ffffffff816875cc>] kmemleak_alloc+0x5c/0xc0
          [<ffffffff8114aec3>] kmem_cache_alloc_trace+0x163/0x240
          [<ffffffff8127a290>] btrfs_defrag_file+0xf0/0xb20
          [<ffffffff8125d9a5>] btrfs_run_defrag_inodes+0x165/0x210
          [<ffffffff812479d7>] cleaner_kthread+0x177/0x190
          [<ffffffff81075c7d>] kthread+0x8d/0xa0
          [<ffffffff816af5f4>] kernel_thread_helper+0x4/0x10
          [<ffffffffffffffff>] 0xffffffffffffffff
      
      "pages" is not always freed. Fix it removing the unnecesary additional return.
      Signed-off-by: default avatarDiego Calleja <diegocg@gmail.com>
      60ccf82f
    • Yan, Zheng's avatar
      btrfs: check file extent backref offset underflow · 84850e8d
      Yan, Zheng authored
      Offset field in data extent backref can underflow if clone range ioctl
      is used. We can reliably detect the underflow because max file size is
      limited to 2^63 and max data extent size is limited by block group size.
      Signed-off-by: default avatarZheng Yan  <zheng.z.yan@intel.com>
      84850e8d
    • Jean Delvare's avatar
      hwmon: (w83627ehf) Fix negative 8-bit temperature values · 133d324d
      Jean Delvare authored
      Since 8-bit temperature values are now handled in 16-bit struct
      members, values have to be cast to s8 for negative temperatures to be
      properly handled. This is broken since kernel version 2.6.39
      (commit bce26c58.)
      Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
      Cc: Guenter Roeck <guenter.roeck@ericsson.com>
      Cc: stable@kernel.org	# 2.6.39+
      Signed-off-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
      133d324d
    • Hugh Dickins's avatar
      mm: fix race between mremap and removing migration entry · 486cf46f
      Hugh Dickins authored
      I don't usually pay much attention to the stale "? " addresses in
      stack backtraces, but this lucky report from Pawel Sikora hints that
      mremap's move_ptes() has inadequate locking against page migration.
      
       3.0 BUG_ON(!PageLocked(p)) in migration_entry_to_page():
       kernel BUG at include/linux/swapops.h:105!
       RIP: 0010:[<ffffffff81127b76>]  [<ffffffff81127b76>]
                             migration_entry_wait+0x156/0x160
        [<ffffffff811016a1>] handle_pte_fault+0xae1/0xaf0
        [<ffffffff810feee2>] ? __pte_alloc+0x42/0x120
        [<ffffffff8112c26b>] ? do_huge_pmd_anonymous_page+0xab/0x310
        [<ffffffff81102a31>] handle_mm_fault+0x181/0x310
        [<ffffffff81106097>] ? vma_adjust+0x537/0x570
        [<ffffffff81424bed>] do_page_fault+0x11d/0x4e0
        [<ffffffff81109a05>] ? do_mremap+0x2d5/0x570
        [<ffffffff81421d5f>] page_fault+0x1f/0x30
      
      mremap's down_write of mmap_sem, together with i_mmap_mutex or lock,
      and pagetable locks, were good enough before page migration (with its
      requirement that every migration entry be found) came in, and enough
      while migration always held mmap_sem; but not enough nowadays, when
      there's memory hotremove and compaction.
      
      The danger is that move_ptes() lets a migration entry dodge around
      behind remove_migration_pte()'s back, so it's in the old location when
      looking at the new, then in the new location when looking at the old.
      
      Either mremap's move_ptes() must additionally take anon_vma lock(), or
      migration's remove_migration_pte() must stop peeking for is_swap_entry()
      before it takes pagetable lock.
      
      Consensus chooses the latter: we prefer to add overhead to migration
      than to mremapping, which gets used by JVMs and by exec stack setup.
      Reported-and-tested-by: default avatarPaweł Sikora <pluto@agmk.net>
      Signed-off-by: default avatarHugh Dickins <hughd@google.com>
      Acked-by: default avatarAndrea Arcangeli <aarcange@redhat.com>
      Acked-by: default avatarMel Gorman <mgorman@suse.de>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      486cf46f