* oops in free_block in 2.6.12-git5
@ 2005-07-06 4:50 Alessandro Suardi
0 siblings, 0 replies; only message in thread
From: Alessandro Suardi @ 2005-07-06 4:50 UTC (permalink / raw)
To: Linux Kernel Mailing List
[-- Attachment #1: Type: text/plain, Size: 1305 bytes --]
Hi all,
my bittorrent box running 2.6.12-git5 (AMD K7-800,
256MB RAM, fairly recently updated FC3) decided to
oops a few hours ago. On the console I had a very long
trace before the actual lockup, but I didn't write it down
(it had ide_dma_<xx>_request and bh_<xx> calls as
main part of the trace, though it took up all of my screen
and more so I can't tell where the EIP was).
At reboot however I have an oops with EIP in free_block
very likely happened after/during an updatedb run which
very closely resembles this report that hit isofs in 2.6.9-rc2:
http://www.ussg.iu.edu/hypermail/linux/kernel/0409.1/1790.html
The only thing running on the box at that time was a
download of a 8GB torrent with bittorrent from the
FC3 bittorrent-4.1.1-2.1.fc3.rf package.
Attached the oops trace and the decoded oops
after I edited the trace to remove the timed printks
and ran it through ksymoops 2.4.11.
kernel isn't running CONFIG_DEBUG_SLAB but
if you think this is a legitimate slab bug I'll later
update to the current -git kernel and enable the
slab debugging.
Thanks,
--alessandro
"When it comes to luck / you make your own
Tonight I've got dirt on my hands
But I'm building me a new home"
(Bruce Springsteen - "Lucky Town")
[-- Attachment #2: oops-02.txt.decoded --]
[-- Type: application/octet-stream, Size: 5536 bytes --]
ksymoops 2.4.11 on i686 2.6.12-git5. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.6.12-git5/ (default)
-m /usr/src/linux/System.map (default)
Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.
Error (regular_file): read_ksyms stat /proc/ksyms failed
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Jul 6 04:02:11 donkey kernel: Unable to handle kernel paging request at virtual address 2071fce4
Jul 6 04:02:11 donkey kernel: c013c8ef
Jul 6 04:02:11 donkey kernel: *pde = 00000000
Jul 6 04:02:11 donkey kernel: Oops: 0000 [#1]
Jul 6 04:02:11 donkey kernel: CPU: 0
Jul 6 04:02:11 donkey kernel: EIP: 0060:[<c013c8ef>] Not tainted VLI
Using defaults from ksymoops -t elf32-i386 -a i386
Jul 6 04:02:11 donkey kernel: EFLAGS: 00010016 (2.6.12-git5)
Jul 6 04:02:11 donkey kernel: eax: 00800000 ebx: 2071fce0 ecx: 00000000 edx: c1000000
Jul 6 04:02:11 donkey kernel: esi: cffef1e0 edi: 0000004f ebp: cffa3ef0 esp: cffa3ed4
Jul 6 04:02:11 donkey kernel: ds: 007b es: 007b ss: 0068
Jul 6 04:02:11 donkey kernel: Stack: cffef1ec cffef1fc 2972c214 cffea210 cffea210 cffea200 2972c214 cffa3f08
Jul 6 04:02:11 donkey kernel: c013cfbf cffef1e0 cffef6fc cffef1e0 00000003 cffa3f34 c013d074 cffa2000
Jul 6 04:02:11 donkey kernel: cffef6fc cffa2000 cffa2000 cffef250 cffa3f34 c046ca80 00000297 c046ca84
Jul 6 04:02:11 donkey kernel: Call Trace:
Jul 6 04:02:11 donkey kernel: [<c010316a>] show_stack+0x7a/0x90
Jul 6 04:02:11 donkey kernel: [<c01032f6>] show_registers+0x156/0x1d0
Jul 6 04:02:11 donkey kernel: [<c01034f4>] die+0xe4/0x170
Jul 6 04:02:11 donkey kernel: [<c0110bd3>] do_page_fault+0x453/0x671
Jul 6 04:02:11 donkey kernel: [<c0102d9f>] error_code+0x4f/0x54
Jul 6 04:02:11 donkey kernel: [<c013cfbf>] drain_array_locked+0x5f/0xa0
Jul 6 04:02:11 donkey kernel: [<c013d074>] cache_reap+0x74/0x1d0
Jul 6 04:02:11 donkey kernel: [<c0125e54>] worker_thread+0x1c4/0x280
Jul 6 04:02:11 donkey kernel: [<c0129ffb>] kthread+0x8b/0xc0
Jul 6 04:02:11 donkey kernel: [<c0100d45>] kernel_thread_helper+0x5/0x10
Jul 6 04:02:11 donkey kernel: Code: 8b 55 e8 89 5e 1c 89 53 04 47 3b 7d ec 7d 6d 8b 45 f0 8b 15 90 cb 46 c0 8b 0c b8 8d 81 00 00 00 40 c1 e8 0c c1 e0 05 8b 5c 10 1c <8b> 53 04 8b 03 89 50 04 89 02 31 d2 2b 4b 0c c7 03 00 01 10 00
>>EIP; c013c8ef <free_block+6f/e0> <=====
>>edx; c1000000 <pg0+b6d000/3fb6b400>
>>esi; cffef1e0 <pg0+fb5c1e0/3fb6b400>
>>ebp; cffa3ef0 <pg0+fb10ef0/3fb6b400>
>>esp; cffa3ed4 <pg0+fb10ed4/3fb6b400>
Trace; c010316a <show_stack+7a/90>
Trace; c01032f6 <show_registers+156/1d0>
Trace; c01034f4 <die+e4/170>
Trace; c0110bd3 <do_page_fault+453/671>
Trace; c0102d9f <error_code+4f/54>
Trace; c013cfbf <drain_array_locked+5f/a0>
Trace; c013d074 <cache_reap+74/1d0>
Trace; c0125e54 <worker_thread+1c4/280>
Trace; c0129ffb <kthread+8b/c0>
Trace; c0100d45 <kernel_thread_helper+5/10>
This architecture has variable length instructions, decoding before eip
is unreliable, take these instructions with a pinch of salt.
Code; c013c8c4 <free_block+44/e0>
00000000 <_EIP>:
Code; c013c8c4 <free_block+44/e0>
0: 8b 55 e8 mov 0xffffffe8(%ebp),%edx
Code; c013c8c7 <free_block+47/e0>
3: 89 5e 1c mov %ebx,0x1c(%esi)
Code; c013c8ca <free_block+4a/e0>
6: 89 53 04 mov %edx,0x4(%ebx)
Code; c013c8cd <free_block+4d/e0>
9: 47 inc %edi
Code; c013c8ce <free_block+4e/e0>
a: 3b 7d ec cmp 0xffffffec(%ebp),%edi
Code; c013c8d1 <free_block+51/e0>
d: 7d 6d jge 7c <_EIP+0x7c>
Code; c013c8d3 <free_block+53/e0>
f: 8b 45 f0 mov 0xfffffff0(%ebp),%eax
Code; c013c8d6 <free_block+56/e0>
12: 8b 15 90 cb 46 c0 mov 0xc046cb90,%edx
Code; c013c8dc <free_block+5c/e0>
18: 8b 0c b8 mov (%eax,%edi,4),%ecx
Code; c013c8df <free_block+5f/e0>
1b: 8d 81 00 00 00 40 lea 0x40000000(%ecx),%eax
Code; c013c8e5 <free_block+65/e0>
21: c1 e8 0c shr $0xc,%eax
Code; c013c8e8 <free_block+68/e0>
24: c1 e0 05 shl $0x5,%eax
Code; c013c8eb <free_block+6b/e0>
27: 8b 5c 10 1c mov 0x1c(%eax,%edx,1),%ebx
This decode from eip onwards should be reliable
Code; c013c8ef <free_block+6f/e0>
00000000 <_EIP>:
Code; c013c8ef <free_block+6f/e0> <=====
0: 8b 53 04 mov 0x4(%ebx),%edx <=====
Code; c013c8f2 <free_block+72/e0>
3: 8b 03 mov (%ebx),%eax
Code; c013c8f4 <free_block+74/e0>
5: 89 50 04 mov %edx,0x4(%eax)
Code; c013c8f7 <free_block+77/e0>
8: 89 02 mov %eax,(%edx)
Code; c013c8f9 <free_block+79/e0>
a: 31 d2 xor %edx,%edx
Code; c013c8fb <free_block+7b/e0>
c: 2b 4b 0c sub 0xc(%ebx),%ecx
Code; c013c8fe <free_block+7e/e0>
f: c7 03 00 01 10 00 movl $0x100100,(%ebx)
1 warning and 1 error issued. Results may not be reliable.
[-- Attachment #3: oops-02.txt --]
[-- Type: text/plain, Size: 2864 bytes --]
Jul 6 04:02:11 donkey kernel: [198064.853894] Unable to handle kernel paging request at virtual address 2071fce4
Jul 6 04:02:11 donkey kernel: [198064.854464] printing eip:
Jul 6 04:02:11 donkey kernel: [198064.854665] c013c8ef
Jul 6 04:02:11 donkey kernel: [198064.854828] *pde = 00000000
Jul 6 04:02:11 donkey kernel: [198064.855035] Oops: 0000 [#1]
Jul 6 04:02:11 donkey kernel: [198064.855242] PREEMPT
Jul 6 04:02:11 donkey kernel: [198064.855416] Modules linked in: nls_iso8859_1 parport_pc parport 8139too floppy
Jul 6 04:02:11 donkey kernel: [198064.856021] CPU: 0
Jul 6 04:02:11 donkey kernel: [198064.856023] EIP: 0060:[<c013c8ef>] Not tainted VLI
Jul 6 04:02:11 donkey kernel: [198064.856027] EFLAGS: 00010016 (2.6.12-git5)
Jul 6 04:02:11 donkey kernel: [198064.856901] EIP is at free_block+0x6f/0xe0
Jul 6 04:02:11 donkey kernel: [198064.857202] eax: 00800000 ebx: 2071fce0 ecx: 00000000 edx: c1000000
Jul 6 04:02:11 donkey kernel: [198064.857691] esi: cffef1e0 edi: 0000004f ebp: cffa3ef0 esp: cffa3ed4
Jul 6 04:02:11 donkey kernel: [198064.858177] ds: 007b es: 007b ss: 0068
Jul 6 04:02:11 donkey kernel: [198064.858476] Process events/0 (pid: 3, threadinfo=cffa2000 task=c127a020)
Jul 6 04:02:11 donkey kernel: [198064.858956] Stack: cffef1ec cffef1fc 2972c214 cffea210 cffea210 cffea200 2972c214 cffa3f08
Jul 6 04:02:11 donkey kernel: [198064.859678] c013cfbf cffef1e0 cffef6fc cffef1e0 00000003 cffa3f34 c013d074 cffa2000
Jul 6 04:02:11 donkey kernel: [198064.860398] cffef6fc cffa2000 cffa2000 cffef250 cffa3f34 c046ca80 00000297 c046ca84
Jul 6 04:02:11 donkey kernel: [198064.861118] Call Trace:
Jul 6 04:02:11 donkey kernel: [198064.861494] [<c010316a>] show_stack+0x7a/0x90
Jul 6 04:02:11 donkey kernel: [198064.862016] [<c01032f6>] show_registers+0x156/0x1d0
Jul 6 04:02:11 donkey kernel: [198064.862570] [<c01034f4>] die+0xe4/0x170
Jul 6 04:02:11 donkey kernel: [198064.863049] [<c0110bd3>] do_page_fault+0x453/0x671
Jul 6 04:02:11 donkey kernel: [198064.863604] [<c0102d9f>] error_code+0x4f/0x54
Jul 6 04:02:11 donkey kernel: [198064.864120] [<c013cfbf>] drain_array_locked+0x5f/0xa0
Jul 6 04:02:11 donkey kernel: [198064.864686] [<c013d074>] cache_reap+0x74/0x1d0
Jul 6 04:02:11 donkey kernel: [198064.865209] [<c0125e54>] worker_thread+0x1c4/0x280
Jul 6 04:02:11 donkey kernel: [198064.865762] [<c0129ffb>] kthread+0x8b/0xc0
Jul 6 04:02:11 donkey kernel: [198064.866266] [<c0100d45>] kernel_thread_helper+0x5/0x10
Jul 6 04:02:11 donkey kernel: [198064.866835] Code: 8b 55 e8 89 5e 1c 89 53 04 47 3b 7d ec 7d 6d 8b 45 f0 8b 15 90 cb 46 c0 8b 0c b8 8d 81 00 00 00 40 c1 e8 0c c1 e0 05 8b 5c 10 1c <8b> 53 04 8b 03 89 50 04 89 02 31 d2 2b 4b 0c c7 03 00 01 10 00
Jul 6 04:02:11 donkey kernel: [198064.955135] <6>note: events/0[3] exited with preempt_count 1
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2005-07-06 4:50 oops in free_block in 2.6.12-git5 Alessandro Suardi
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