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[xfs-masters] [Bug 417] Reading snapshot gives error in debug.c / xfs_bm

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Subject: [xfs-masters] [Bug 417] Reading snapshot gives error in debug.c / xfs_bmap_search_extents
From: bugzilla-daemon@xxxxxxxxxxx
Date: Fri, 11 Aug 2006 00:38:18 -0700
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http://oss.sgi.com/bugzilla/show_bug.cgi?id=417





------- Additional Comments From kirk@xxxxxxxxxx  2006-08-11 00:38 CST -------
is this problem still exists ?
last night's experience:

Access to block zero: fs: <sda3> inode: 2442457097 start_block : 0 start_off : 0
blkcnt : 0 extent-state : 0 
------------[ cut here ]------------
kernel BUG at n:23384!
invalid opcode: 0000 [#1]
PREEMPT SMP 
Modules linked in: pcspkr shasta
CPU:    0
EIP:    0060:[<c029c644>]    Not tainted VLI
EFLAGS: 00010246   (2.6.17.6 #4) 
EIP is at cmn_err+0x90/0x98
eax: 00000000   ebx: c04332e0   ecx: c5927b84   edx: 00000001
esi: c5927cb0   edi: c055e220   ebp: 00000000   esp: c5927b8c
ds: 007b   es: 007b   ss: 0068
Process smbd (pid: 16729, threadinfo=c5926000 task=f7984070)
Stack: 00000213 c7652dd0 c5927cb0 cd3d8680 00000000 c0252e93 00000000 c04332e0 
       f7a4e280 9194f009 00000000 00000000 00000000 00000000 00000000 00000000 
       00000000 00000000 cd3d86d0 00000000 cd3d8680 00000000 c0254155 cd3d8680 
Call Trace:
 <c0252e93> xfs_bmap_search_extents+0xa2/0xac  <c0254155> xfs_bmapi+0x301/0x1279
 <c0114bf9> default_wake_function+0x0/0x12  <c0114bf9>
default_wake_function+0x0/0x12
 <c03e49d0> _read_unlock_irq+0xe/0x22  <c013372a> find_get_page+0x3b/0x40
 <c0120993> __mod_timer+0x89/0x93  <c037b472> sk_reset_timer+0x12/0x1e
 <c03a8ad9> tcp_write_xmit+0x1b7/0x216  <c03a8b0e> tcp_write_xmit+0x1ec/0x216
 <c03a8b5b> __tcp_push_pending_frames+0x23/0x80  <c029a389> 
xfs_zero_eof+0x187/0x2c2
 <c02b6428> copy_to_user+0x32/0x3c  <c011d4d1> current_fs_time+0x48/0x5f
 <c029a98e> xfs_write+0x4ca/0xa72  <c0378631> sock_aio_read+0x56/0x64
 <c02b6428> copy_to_user+0x32/0x3c  <c02969c5> xfs_file_aio_write+0x77/0x7f
 <c014cca0> do_sync_write+0xc0/0xf3  <c01295fe> 
autoremove_wake_function+0x0/0x3a
 <c014cd5b> vfs_write+0x88/0x112  <c014cf6a> sys_pwrite64+0x51/0x6e
 <c0102837> syscall_call+0x7/0xb 
Code: 68 20 e2 55 c0 ff 34 ad a0 26 3f c0 68 84 c5 43 c0 e8 c7 d2 e7 ff b8 48 67
49 c0 8b 54 24 0c e8 0b 83 14 00 83 c4 0c 85 ed 75 02 <0f> 0b 58 5b 5e 5f 5d c3
55 b8 07 00 00 00 57 bf 20 e2 55 c0 56 
EIP: [<c029c644>] cmn_err+0x90/0x98 SS:ESP 0068:c5927b8c

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