Re: Crash...

[Jiro SEKIBA <jir-hfpbi5WX9J54Eiagz67IpQ@public.gmane.org>]

Hi, 

> I tried to reproduce the situation, but I can not reproduce the bug
> with rc4, rc4+experimental on debian/lenny. 

 Well, when I tried I got different kernel dump.
I don't know if it's related or not, but just in case.

 I got following with rc4 with device mapper, created nilfs2 filesystem on
it during rsync on the filesystem.


[405816.059174] general protection fault: 0000 [#1] SMP 
[405816.059205] last sysfs file: /sys/block/dm-0/removable
[405816.059233] CPU 0 
[405816.059255] Modules linked in: dm_mod nilfs2 ipv6 loop snd_hda_codec_realtek i2c_i801 i2c_core iTCO_wdt serio_raw snd_hda_intel snd_hda_codec pcspkr psmouse snd_pcm snd_timer snd button processor soundcore intel_agp snd_page_alloc evdev ext3 jbd mbcache raid10 raid456 raid6_pq async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod sg sr_mod sd_mod cdrom ahci libata scsi_mod tg3 libphy uhci_hcd ehci_hcd thermal fan thermal_sys
[405816.059462] Pid: 215, comm: kswapd0 Not tainted 2.6.31-rc4 #1 N8-S720XMZCUUA2
[405816.059504] RIP: 0010:[<ffffffff810a2ac0>]  [<ffffffff810a2ac0>] shrink_page_list+0x2ac/0x609
[405816.059554] RSP: 0018:ffff88016cec1a40  EFLAGS: 00010282
[405816.059579] RAX: e7d50c6d4d1428d2 RBX: ffffea0003f5fbb0 RCX: 0000000000000800
[405816.059621] RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000000
[405816.059663] RBP: ffffea0003f5fbd8 R08: 0000000000000001 R09: ffff88016fc075c0
[405816.059705] R10: 00003ffffffff000 R11: ffff88007a26f880 R12: ffff8801506f41a8
[405816.059747] R13: 0000000000000001 R14: 000000000000e800 R15: ffff88016cec1e10
[405816.059789] FS:  0000000000000000(0000) GS:ffff880028028000(0000) knlGS:0000000000000000
[405816.059833] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[405816.059858] CR2: 0000000001ae9618 CR3: 000000016c802000 CR4: 00000000000406f0
[405816.059900] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[405816.059943] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[405816.059985] Process kswapd0 (pid: 215, threadinfo ffff88016cec0000, task ffff88016f27f930)
[405816.060028] Stack:
[405816.060047]  0000000000000001 ffff88016cec1af0 0000000000000000 ffff88016cec1cb0
[405816.060078] <0> 0000000000000000 0000000000000017 0000000000000009 0000000000000001
[405816.060124] <0> ffffea00039702b8 ffffea0004aa0458 ffffea0004aa0810 ffffea0003970248
[405816.060185] Call Trace:
[405816.060208]  [<ffffffff8100c40e>] ? common_interrupt+0xe/0x13
[405816.060234]  [<ffffffff810a1cdb>] ? isolate_pages_global+0xa9/0x1f3
[405816.060262]  [<ffffffff810a338a>] ? shrink_list+0x2d8/0x5ec
[405816.060289]  [<ffffffff8110ac52>] ? proc_delete_inode+0x0/0x40
[405816.060317]  [<ffffffff8109f621>] ? determine_dirtyable_memory+0xd/0x1d
[405816.060345]  [<ffffffff8109f697>] ? get_dirty_limits+0x1d/0x256
[405816.060371]  [<ffffffff8100a54d>] ? __switch_to+0xae/0x266
[405816.060397]  [<ffffffff810a3921>] ? shrink_zone+0x283/0x335
[405816.060427]  [<ffffffffa0189217>] ? mb_cache_shrink_fn+0x26/0x117 [mbcache]
[405816.060456]  [<ffffffff810a3b14>] ? shrink_slab+0x141/0x153
[405816.060482]  [<ffffffff810a42ff>] ? kswapd+0x482/0x631
[405816.060507]  [<ffffffff810a1c32>] ? isolate_pages_global+0x0/0x1f3
[405816.060536]  [<ffffffff81053522>] ? autoremove_wake_function+0x0/0x2e
[405816.060564]  [<ffffffff810a3e7d>] ? kswapd+0x0/0x631
[405816.060588]  [<ffffffff810531d9>] ? kthread+0x84/0x8c
[405816.060614]  [<ffffffff8100caca>] ? child_rip+0xa/0x20
[405816.060639]  [<ffffffff81053155>] ? kthread+0x0/0x8c
[405816.060664]  [<ffffffff8100cac0>] ? child_rip+0x0/0x20
[405816.060688] Code: c0 0f 84 d1 02 00 00 f0 80 65 d8 ef 48 c7 c6 e0 b9 2a 81 48 c7 c7 26 fc 32 81 31 c0 e8 02 d0 1e 00 e9 b6 01 00 00 49 8b 44 24 58 <48> 83 38 00 0f 84 79 02 00 00 65 48 8b 04 25 00 b0 00 00 f6 40 
[405816.060819] RIP  [<ffffffff810a2ac0>] shrink_page_list+0x2ac/0x609
[405816.060847]  RSP <ffff88016cec1a40>
[405816.061045] ---[ end trace c44a8d41c1aab2f3 ]---




-- 
Jiro SEKIBA <jir-hfpbi5WX9J54Eiagz67IpQ@public.gmane.org>