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SubjectRe: Frequent system freezes after kernel bug
On 2004.06.12 20:37, Andreas Schmidt wrote:
> Hi,
>
> in the last few days I have experienced frequent system freezes
> apparently related to kernel bugs on one box here. Unfortunately,
> that's just the same system serving as router and local fileserver
> for
I have removed the tainted fcdsl-module and tried to crash the machine
by generating a steady harddisk activity. Writing to a partition with
EXT2 resulted in two non-fatal bugs in buffer.c after several hours:

19:09:32
kernel: kernel BUG at buffer.c:575!
kernel: invalid operand: 0000
kernel: CPU: 0
kernel: EIP: 0010:[__insert_into_lru_list+28/112] Not tainted
kernel: EFLAGS: 00010206
kernel: eax: 00000000 ebx: 00000002 ecx: d2e980c0 edx: c02ad6cc
kernel: esi: d2e980c0 edi: d2e980c0 ebp: 00000001 esp: c4677ebc
kernel: ds: 0018 es: 0018 ss: 0018
kernel: Process cp (pid: 4081, stackpage=c4677000)
kernel: Stack: 00000002 c0135a36 d2e980c0 00000002 d2e980c0 00001000
c0135a4a d2e980c0
kernel: c0136443 d2e980c0 00001000 dc1bc0c0 06261000 00000000
00001000 00000000
kernel: c0136ab4 dc1bc0c0 c130e514 00000000 00001000 c130e514
bffff404 d1c7b000
kernel: Call Trace: [__refile_buffer+86/96] [refile_buffer+10/16]
[__block_commit_write+131/208] [generic_commit_write+52/96]
[do_generic_file_write+654/976]
kernel: [generic_file_write+259/288] [sys_write+150/240] [system_call
+51/56]
kernel:
kernel: Code: 0f 0b 3f 02 e5 57 21 c0 83 3a 00 75 05 89 0a 89 49 24 8b
02

04:47:01
kernel: kernel BUG at buffer.c:575!
kernel: invalid operand: 0000
kernel: CPU: 0
kernel: EIP:
0010:[__insert_into_lru_list+28/112] Not tainted
kernel: EFLAGS: 00010206
kernel: eax: 00000000 ebx: 00000002 ecx: d07e80c0 edx: c02ad6cc
kernel: esi: d07e80c0 edi: d07e80c0 ebp: 00000001 esp: c2d85ebc
kernel: ds: 0018 es: 0018 ss: 0018
kernel: Process cp (pid: 760, stackpage=c2d85000)
kernel: Stack: 00000002 c0135a36 d07e80c0 00000002 d07e80c0 00001000
c0135a4a d07e80c0
kernel: c0136443 d07e80c0 00001000 cee62ac0 0c7b4000 00000000
00001000 00000000
kernel: c0136ab4 cee62ac0 c14be3d4 00000000 00001000 c14be3d4
bffff3d4 db98b000
kernel: Call Trace: [__refile_buffer+86/96] [refile_buffer+10/16]
[__block_commit_write+131/208] [generic_commit_write+52/96]
[do_generic_file_write+654/976]
kernel: [generic_file_write+259/288] [sys_write+150/240] [system_call
+51/56]
kernel:
kernel: Code: 0f 0b 3f 02 e5 57 21 c0 83 3a 00 75 05 89 0a 89 49 24 8b
02


Thereafter, I tried to continuously writing to an EXT3 partition, which
after just about half an hour resulted in bugs in buffer.c and
transaction.c. This time, the system froze again. "init 6" stopped
after sending the KILL signal because the processes with IDs "ca" and
"1" to "6" were hanging. Here's the output:

kernel: kernel BUG at buffer.c:575!
kernel: invalid operand: 0000
kernel: CPU: 0
kernel: EIP: 0010:[__insert_into_lru_list+28/112] Not tainted
kernel: EFLAGS: 00010206
kernel: eax: 00000000 ebx: 00000002 ecx: d07b80c0 edx: c02ad6cc
kernel: esi: d07b80c0 edi: d07b80c0 ebp: 00000001 esp: c6195e6c
kernel: ds: 0018 es: 0018 ss: 0018
kernel: Process cp (pid: 3627, stackpage=c6195000)
kernel: Stack: 00000002 c0135a36 d07b80c0 00000002 d07b80c0 00001000
c0135a4a d07b80c0
kernel: c0136443 d07b80c0 00001000 c648bc80 07df7000 00000000
00001000 00000000
kernel: c0136ab4 c648bc80 c105c770 00000000 00001000 c105c770
bffff3e4 c648bc80
kernel: Call Trace: [__refile_buffer+86/96] [refile_buffer+10/16]
[__block_commit_write+131/208] [generic_commit_write+52/96]
[ext3_commit_write+305/448]
kernel: [do_generic_file_write+654/976] [generic_file_write+259/288]
[ext3_file_write+35/192] [sys_write+150/240] [system_call+51/56]
kernel:
kernel: Code: 0f 0b 3f 02 e5 57 21 c0 83 3a 00 75 05 89 0a 89 49 24 8b
02
kernel: <0>Assertion failure in journal_start() at transaction.c:251:
"handle->h_transaction->t_journal == journal"
kernel: kernel BUG at transaction.c:251!
kernel: invalid operand: 0000
kernel: CPU: 0
kernel: EIP: 0010:[journal_start+74/192] Not tainted
kernel: EFLAGS: 00010282
kernel: eax: 0000006c ebx: d3ea6600 ecx: df37e000 edx: 00000001
kernel: esi: dfe49800 edi: c6194000 ebp: 00000040 esp: c6195c10
kernel: ds: 0018 es: 0018 ss: 0018
kernel: Process cp (pid: 3627, stackpage=c6195000)
kernel: Stack: c021b240 c021b46c c021b220 000000fb c021b440 d3ea6600
dfae0c00 c419d6c0
kernel: c015ea38 dfe49800 00000002 c419d6c0 dfae0c00 00000001
c014642e c419d6c0
kernel: c419d6c0 c419d72c d163cec0 c0128c93 c419d6c0 00000001
c419d6c0 c419d72c
kernel: Call Trace: [ext3_dirty_inode+88/256] [__mark_inode_dirty
+46/144] [do_generic_file_write+211/976] [ide_start_request+382/432]
[generic_file_write+259/288]
kernel: [ext3_file_write+35/192] [do_acct_process+571/592]
[acct_process+25/39] [do_exit+105/592] [do_invalid_op+0/160] [die
+86/96]
kernel: [do_invalid_op+140/160] [__insert_into_lru_list+28/112]
[ext3_get_block_handle+426/640] [ext3_get_block_handle+242/640]
[error_code+52/60] [__insert_into_lru_list+28/112]
kernel: [__refile_buffer+86/96] [refile_buffer+10/16]
[__block_commit_write+131/208] [generic_commit_write+52/96]
[ext3_commit_write+305/448] [do_generic_file_write+654/976]
kernel: [generic_file_write+259/288] [ext3_file_write+35/192]
[sys_write+150/240] [system_call+51/56]
kernel:
kernel: Code: 0f 0b fb 00 20 b2 21 c0 83 c4 14 ff 43 08 89 d8 eb 59 8d
74

Best regards,

Andreas
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