1. 21 8月, 2010 19 次提交
  2. 20 8月, 2010 1 次提交
  3. 19 8月, 2010 15 次提交
  4. 18 8月, 2010 5 次提交
    • T
      NFS: Fix an Oops in the NFSv4 atomic open code · 0a377cff
      Trond Myklebust 提交于
      Adam Lackorzynski reports:
      
      with 2.6.35.2 I'm getting this reproducible Oops:
      
      [  110.825396] BUG: unable to handle kernel NULL pointer dereference at
      (null)
      [  110.828638] IP: [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4
      [  110.828638] PGD be89f067 PUD bf18f067 PMD 0
      [  110.828638] Oops: 0000 [#1] SMP
      [  110.828638] last sysfs file: /sys/class/net/lo/operstate
      [  110.828638] CPU 2
      [  110.828638] Modules linked in: rtc_cmos rtc_core rtc_lib amd64_edac_mod
      i2c_amd756 edac_core i2c_core dm_mirror dm_region_hash dm_log dm_snapshot
      sg sr_mod usb_storage ohci_hcd mptspi tg3 mptscsih mptbase usbcore nls_base
      [last unloaded: scsi_wait_scan]
      [  110.828638]
      [  110.828638] Pid: 11264, comm: setchecksum Not tainted 2.6.35.2 #1
      [  110.828638] RIP: 0010:[<ffffffff811247b7>]  [<ffffffff811247b7>]
      encode_attrs+0x1a/0x2a4
      [  110.828638] RSP: 0000:ffff88003bf5b878  EFLAGS: 00010296
      [  110.828638] RAX: ffff8800bddb48a8 RBX: ffff88003bf5bb18 RCX:
      0000000000000000
      [  110.828638] RDX: ffff8800be258800 RSI: 0000000000000000 RDI:
      ffff88003bf5b9f8
      [  110.828638] RBP: 0000000000000000 R08: ffff8800bddb48a8 R09:
      0000000000000004
      [  110.828638] R10: 0000000000000003 R11: ffff8800be779000 R12:
      ffff8800be258800
      [  110.828638] R13: ffff88003bf5b9f8 R14: ffff88003bf5bb20 R15:
      ffff8800be258800
      [  110.828638] FS:  0000000000000000(0000) GS:ffff880041e00000(0063)
      knlGS:00000000556bd6b0
      [  110.828638] CS:  0010 DS: 002b ES: 002b CR0: 000000008005003b
      [  110.828638] CR2: 0000000000000000 CR3: 00000000be8ef000 CR4:
      00000000000006e0
      [  110.828638] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
      0000000000000000
      [  110.828638] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
      0000000000000400
      [  110.828638] Process setchecksum (pid: 11264, threadinfo
      ffff88003bf5a000, task ffff88003f232210)
      [  110.828638] Stack:
      [  110.828638]  0000000000000000 ffff8800bfbcf920 0000000000000000
      0000000000000ffe
      [  110.828638] <0> 0000000000000000 0000000000000000 0000000000000000
      0000000000000000
      [  110.828638] <0> 0000000000000000 0000000000000000 0000000000000000
      0000000000000000
      [  110.828638] Call Trace:
      [  110.828638]  [<ffffffff81124c1f>] ? nfs4_xdr_enc_setattr+0x90/0xb4
      [  110.828638]  [<ffffffff81371161>] ? call_transmit+0x1c3/0x24a
      [  110.828638]  [<ffffffff813774d9>] ? __rpc_execute+0x78/0x22a
      [  110.828638]  [<ffffffff81371a91>] ? rpc_run_task+0x21/0x2b
      [  110.828638]  [<ffffffff81371b7e>] ? rpc_call_sync+0x3d/0x5d
      [  110.828638]  [<ffffffff8111e284>] ? _nfs4_do_setattr+0x11b/0x147
      [  110.828638]  [<ffffffff81109466>] ? nfs_init_locked+0x0/0x32
      [  110.828638]  [<ffffffff810ac521>] ? ifind+0x4e/0x90
      [  110.828638]  [<ffffffff8111e2fb>] ? nfs4_do_setattr+0x4b/0x6e
      [  110.828638]  [<ffffffff8111e634>] ? nfs4_do_open+0x291/0x3a6
      [  110.828638]  [<ffffffff8111ed81>] ? nfs4_open_revalidate+0x63/0x14a
      [  110.828638]  [<ffffffff811056c4>] ? nfs_open_revalidate+0xd7/0x161
      [  110.828638]  [<ffffffff810a2de4>] ? do_lookup+0x1a4/0x201
      [  110.828638]  [<ffffffff810a4733>] ? link_path_walk+0x6a/0x9d5
      [  110.828638]  [<ffffffff810a42b6>] ? do_last+0x17b/0x58e
      [  110.828638]  [<ffffffff810a5fbe>] ? do_filp_open+0x1bd/0x56e
      [  110.828638]  [<ffffffff811cd5e0>] ? _atomic_dec_and_lock+0x30/0x48
      [  110.828638]  [<ffffffff810a9b1b>] ? dput+0x37/0x152
      [  110.828638]  [<ffffffff810ae063>] ? alloc_fd+0x69/0x10a
      [  110.828638]  [<ffffffff81099f39>] ? do_sys_open+0x56/0x100
      [  110.828638]  [<ffffffff81027a22>] ? ia32_sysret+0x0/0x5
      [  110.828638] Code: 83 f1 01 e8 f5 ca ff ff 48 83 c4 50 5b 5d 41 5c c3 41
      57 41 56 41 55 49 89 fd 41 54 49 89 d4 55 48 89 f5 53 48 81 ec 18 01 00 00
      <8b> 06 89 c2 83 e2 08 83 fa 01 19 db 83 e3 f8 83 c3 18 a8 01 8d
      [  110.828638] RIP  [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4
      [  110.828638]  RSP <ffff88003bf5b878>
      [  110.828638] CR2: 0000000000000000
      [  112.840396] ---[ end trace 95282e83fd77358f ]---
      
      We need to ensure that the O_EXCL flag is turned off if the user doesn't
      set O_CREAT.
      
      Cc: stable@kernel.org
      Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
      0a377cff
    • T
      Merge branch 'fix/asoc' into for-linus · 2ea1ef57
      Takashi Iwai 提交于
      2ea1ef57
    • T
      Merge branch 'fix/hda' into for-linus · 76165a30
      Takashi Iwai 提交于
      76165a30
    • J
      ALSA: emu10k1 - delay the PCM interrupts (add pcm_irq_delay parameter) · 56385a12
      Jaroslav Kysela 提交于
      With some hardware combinations, the PCM interrupts are acknowledged
      before the period boundary from the emu10k1 chip. The midlevel PCM code
      gets confused and the playback stream is interrupted.
      
      It seems that the interrupt processing shift by 2 samples is enough
      to fix this issue. This default value does not harm other,
      non-affected hardware.
      
      More information: Kernel bugzilla bug#16300
      
      [A copmile warning fixed by tiwai]
      Signed-off-by: NJaroslav Kysela <perex@perex.cz>
      Cc: <stable@kernel.org>
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      56385a12
    • N
      fs: brlock vfsmount_lock · 99b7db7b
      Nick Piggin 提交于
      fs: brlock vfsmount_lock
      
      Use a brlock for the vfsmount lock. It must be taken for write whenever
      modifying the mount hash or associated fields, and may be taken for read when
      performing mount hash lookups.
      
      A new lock is added for the mnt-id allocator, so it doesn't need to take
      the heavy vfsmount write-lock.
      
      The number of atomics should remain the same for fastpath rlock cases, though
      code would be slightly slower due to per-cpu access. Scalability is not not be
      much improved in common cases yet, due to other locks (ie. dcache_lock) getting
      in the way. However path lookups crossing mountpoints should be one case where
      scalability is improved (currently requiring the global lock).
      
      The slowpath is slower due to use of brlock. On a 64 core, 64 socket, 32 node
      Altix system (high latency to remote nodes), a simple umount microbenchmark
      (mount --bind mnt mnt2 ; umount mnt2 loop 1000 times), before this patch it
      took 6.8s, afterwards took 7.1s, about 5% slower.
      
      Cc: Al Viro <viro@ZenIV.linux.org.uk>
      Signed-off-by: NNick Piggin <npiggin@kernel.dk>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      99b7db7b