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I had a kernel BUG today, using a slightly old AUFS (20070917). It seems
to have been caused by glftpd (an ftp daemon), while I was uploading
files. I believe it happened during (or after) a file transfer, not an
mkdir. Here's the dmesg output: (I'll upgrade my aufs soon)
[ 63.667977] aufs 20070917
[ .. snip .. ]
[592019.792625] ------------[ cut here ]------------
[592019.795626] kernel BUG at /root/aufs.wcvs/aufs/fs/aufs/dentry.c:737!
[592019.798676] invalid opcode: 0000 [#1]
[592019.801678] SMP
[592019.804509] Modules linked in: bnep rfcomm l2cap aufs skge sata_via
sata_promise
[592019.810601] CPU: 0
[592019.810602] EIP: 0060:[<f90c6664>] Not tainted VLI
[592019.810603] EFLAGS: 00210217 (2.6.20.3 #8)
[592019.819629] EIP is at au_reval_dpath+0x444/0x4c0 [aufs]
[592019.822510] eax: f0507394 ebx: f2ec9694 ecx: 00000001 edx:
000000ff
[592019.825574] esi: c372b3e0 edi: 00000002 ebp: f2f85cf8 esp:
f2f85ca8
[592019.828637] ds: 007b es: 007b ss: 0068
[592019.831646] Process glftpd (pid: 27489, ti=f2f84000 task=dfb8f560
task.ti=f2f84000)
[592019.834762] Stack: f2f85cbc c02e0cf2 c05e48e0 e2a9cd34 00000000
f2f85cc8 c02ee692 c05e4be0
[592019.840739] c387c3d8 00000000 c01e3a4a 00000000 f782a298
c372b3e0 f2f85ce8 f90c7c55
[592019.846852] f2f85cf8 00000000 c372b3e0 00000002 f2f85de0
f90c6b5c 00000001 f2f85dc0
[592019.852964] Call Trace:
[592019.858686] [<c010408a>] show_trace_log_lvl+0x1a/0x30
[592019.861731] [<c0104151>] show_stack_log_lvl+0xb1/0xe0
[592019.864774] [<c0104341>] show_registers+0x1c1/0x2b0
[592019.867811] [<c010454c>] die+0x11c/0x270
[592019.870715] [<c0104722>] do_trap+0x82/0xb0
[592019.873717] [<c0105047>] do_invalid_op+0x97/0xb0
[592019.876751] [<c04b60b4>] error_code+0x7c/0x84
[592019.879780] [<f90c6b5c>] aufs_d_revalidate+0x13c/0x9f0 [aufs]
[592019.882847] [<c016e81f>] __link_path_walk+0x5ff/0xdd0
[592019.885891] [<c016f036>] link_path_walk+0x46/0xd0
[592019.888775] [<c016f296>] do_path_lookup+0x86/0x1c0
[592019.891810] [<c016fc78>] __user_walk_fd+0x38/0x60
[592019.894846] [<c01650e8>] sys_statfs64+0x48/0x90
[592019.897879] [<c01030f8>] syscall_call+0x7/0xb
[592019.900906] =======================
[592019.903819] Code: 12 0e f9 e8 7f a7 05 c7 e9 73 fc ff ff 0f 0b eb fe
8d b6 00 00 00 00 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b
eb fe <0f> 0b eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe a1
[592019.913720] EIP: [<f90c6664>] au_reval_dpath+0x444/0x4c0 [aufs]
SS:ESP 0068:f2f85ca8
[592019.924569]
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