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    Subject2.6.22-rc4-git5 reiserfs: null ptr deref.

    while running fsx-linux on x86_64 system:

    [ 2213.064351] ReiserFS: sdb1: found reiserfs format "3.6" with standard journal
    [ 2213.071516] ReiserFS: sdb1: using journaled data mode
    [ 2213.083124] ReiserFS: sdb1: journal params: device sdb1, size 8192, journal first block 34, max trans len 512, max batch 450, max commit age 30, max trans age 30
    [ 2213.098843] ReiserFS: sdb1: checking transaction log (sdb1)
    [ 2213.362156] ReiserFS: sdb1: Using r5 hash to sort names
    [ 2228.264867] Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP:
    [ 2228.270363] [<ffffffff88026e8d>] :reiserfs:do_journal_end+0x5de/0xced
    [ 2228.279370] PGD 114991067 PUD 105050067 PMD 0
    [ 2228.283865] Oops: 0000 [1] SMP
    [ 2228.287044] CPU 0
    [ 2228.289078] Modules linked in: reiserfs loop
    [ 2228.293401] Pid: 5280, comm: fsx-linux Not tainted 2.6.22-rc4-git5 #1
    [ 2228.299834] RIP: 0010:[<ffffffff88026e8d>] [<ffffffff88026e8d>] :reiserfs:do_journal_end+0x5de/0xced
    [ 2228.309076] RSP: 0018:ffff810106c6da48 EFLAGS: 00010286
    [ 2228.314385] RAX: 0000000000000000 RBX: ffffc200102cdf10 RCX: ffff81011c861800
    [ 2228.321512] RDX: 0000000000000020 RSI: 0000000000000000 RDI: ffffc20010292220
    [ 2228.328639] RBP: ffff810106c6db18 R08: 0000000000000002 R09: 0000000000000000
    [ 2228.335767] R10: ffffc200102cdf10 R11: 0000000000000048 R12: ffffc200102cbc78
    [ 2228.342895] R13: ffffc200102cdf10 R14: ffffc20010282000 R15: ffff81011e5fe800
    [ 2228.350024] FS: 00002b02d6aa7ae0(0000) GS:ffffffff80721000(0000) knlGS:0000000000000000
    [ 2228.358102] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
    [ 2228.363844] CR2: 0000000000000000 CR3: 000000010b6ea000 CR4: 00000000000006e0
    [ 2228.370972] Process fsx-linux (pid: 5280, threadinfo ffff810106c6c000, task ffff81011db7c040)
    [ 2228.379483] Stack: ffff8101143ae200 00000000000a9c2c ffff810106c6da68 ffffffff00000001
    [ 2228.387565] ffff810106c6db38 0000000000000020 ffff81011c861800 ffff81011c5fd000
    [ 2228.395039] ffff81010dc7c2d0 0000000000000001 0000000000000000 ffff810114b383c0
    [ 2228.402313] Call Trace:
    [ 2228.404963] [<ffffffff80247f8b>] autoremove_wake_function+0x0/0x38
    [ 2228.411236] [<ffffffff88027568>] :reiserfs:do_journal_end+0xcb9/0xced
    [ 2228.417766] [<ffffffff88027951>] :reiserfs:do_journal_begin_r+0x260/0x335
    [ 2228.424643] [<ffffffff88027ade>] :reiserfs:journal_begin+0xb8/0xf6
    [ 2228.430913] [<ffffffff88022581>] :reiserfs:reiserfs_do_truncate+0x418/0x4be
    [ 2228.437961] [<ffffffff8800f2e4>] :reiserfs:reiserfs_truncate_file+0x1a4/0x2b6
    [ 2228.445183] [<ffffffff88012a42>] :reiserfs:reiserfs_vfs_truncate_file+0xe/0x10
    [ 2228.452492] [<ffffffff802773b3>] vmtruncate+0xaf/0xd0
    [ 2228.457632] [<ffffffff8029c66c>] inode_setattr+0x2b/0x125
    [ 2228.463120] [<ffffffff88012136>] :reiserfs:reiserfs_setattr+0x191/0x1bf
    [ 2228.469818] [<ffffffff80552279>] __down_write_nested+0x3d/0xa1
    [ 2228.475730] [<ffffffff8029c88f>] notify_change+0x129/0x23a
    [ 2228.481300] [<ffffffff80288289>] do_truncate+0x63/0x81
    [ 2228.486521] [<ffffffff80288391>] sys_ftruncate+0xea/0x107
    [ 2228.492003] [<ffffffff8020948e>] system_call+0x7e/0x83
    [ 2228.497223]
    [ 2228.498721]
    [ 2228.498722] Code: 8b 00 66 85 c0 0f 89 97 01 00 00 4c 89 ff 44 89 85 48 ff ff
    [ 2228.507806] RIP [<ffffffff88026e8d>] :reiserfs:do_journal_end+0x5de/0xced
    [ 2228.514700] RSP <ffff810106c6da48>
    [ 2228.518190] CR2: 0000000000000000
    [ 2228.521841] Kernel panic - not syncing: Fatal exception
    [ 2228.527080] Rebooting in 30 seconds..



    ---
    ~Randy
    *** Remember to use Documentation/SubmitChecklist when testing your code ***
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