Re: Reiser4 crash

[Hubert Chathi <hubert@uhoreg.ca>]

On Thu, 18 Oct 2007 17:34:49 +0400, Edward Shishkin <edward@namesys.com> said:

> Hmm.. this is the bug encountered by Zan Lynx a long time ago.  So my
> fixup was insufficient. It seems some race take place here, I will try
> to catch this..

I haven't had this problem in a while. (no changes -- same kernel,
reiser4 versions)  Perhaps it was just a spurious hardware error.

> Hubert (Chan) Chathi wrote:

>Reiser4 sometimes crashes:
>> 
>> 2007-10-17_14:59:54.11562 kern.alert: [54537.551000] BUG: unable to
>> handle kernel NULL pointer dereference at virtual address 00000000
>> 2007-10-17_14:59:54.16463 kern.alert: [54537.551000] printing eip:
>> 2007-10-17_14:59:54.16467 kern.warn: [54537.551000] c01f5fd3
>> 2007-10-17_14:59:54.16470 kern.alert: [54537.551000] *pde = 00000000
>> 2007-10-17_14:59:54.16472 <0>[54537.551000] Oops: 0000 [#1]
>> 2007-10-17_14:59:54.16475 <0>[54537.551000] PREEMPT
>> 2007-10-17_14:59:54.16477 kern.warn: [54537.551000] Modules linked
>> in: isofs nls_utf8 udf ext3 jbd mbcache sd_mod firewire_sbp2 usblp
>> wacom dock af_packet video thermal fan button processor ac battery
>> cpufreq_powersave cpufreq_ondemand cpufreq_conservative binfmt_misc
>> ipt_ULOG nf_conntrack_ipv4 xt_state xt_tcpudp ip6table_filter
>> ip6_tables ipv6 iptable_filter ip_tables ipt_REJECT ip_queue
>> nf_conntrack_ftp nf_conntrack nfnetlink x_tables deflate twofish
>> twofish_common camellia serpent des ecb aes xcbc sha256 sha1 md5
>> crypto_null af_key blowfish cbc blkcipher fuse dm_crypt dm_mod nvram
>> radeon drm cpufreq_userspace sg sr_mod sbp2 scsi_mod usbhid irtty_sir
>> sir_dev pcmcia snd_intel8x0m snd_intel8x0 snd_ac97_codec ac97_bus
>> snd_pcm_oss snd_mixer_oss firewire_ohci firewire_core nsc_ircc
>> ipw2100 i
> rda crc_itu_t snd_pcm snd_timer parport_pc parport ide_cd i2c_i801
> ieee80211 ieee80211_crypt rtc crc_ccitt e1000 snd soundcore
> snd_page_alloc cdrom firmware_class ohci1394 ieee1394 yenta_socket
> rsrc_nonstatic pcmcia_core ehci_hcd uhci_hcd intel_agp agpgart evdev
> usbcore unix
>> 2007-10-17_14:59:54.16500 <0>[54537.551000] CPU: 0
>> 2007-10-17_14:59:54.16503 <0>[54537.551000] EIP: 0060:[<c01f5fd3>]
>> Not tainted VLI 2007-10-17_14:59:54.16505 <0>[54537.551000] EFLAGS:
>> 00010286 (2.6.22.1 #1) 2007-10-17_14:59:54.16508 <0>[54537.551000]
>> EIP is at reiser4_tree_by_page+0x3/0x20 2007-10-17_14:59:54.16511
>> <0>[54537.551000] eax: 00000000 ebx: 00000000 ecx: 00000001 edx:
>> eec19024 2007-10-17_14:59:54.16513 <0>[54537.551000] esi: c1472aa0
>> edi: c1472aa0 ebp: e718de20 esp: e718dd2c 2007-10-17_14:59:54.16516
>> <0>[54537.551000] ds: 007b es: 007b fs: 0000 gs: 0033 ss: 0068
>> 2007-10-17_14:59:54.16519 <0>[54537.551000] Process sshd (pid: 426,
>> ti=e718c000 task=d9b974a0 task.ti=e718c000) 2007-10-17_14:59:54.16521
>> <0>[54537.551000] Stack: c01e016a 00000000 7377642b 00706173 00000000
>> c1472aa0 e718de3c e718de20 2007-10-17_14:59:54.16524
>> <0>[54537.551000] c020580c e718de20 00000001 00000000 00000002
>> 00000002 00000002 00000000 2007-10-17_14:59:54.16527
>> <0>[54537.551000] 00000000 00000000 eec19024 00000000 00000000
>> 00000001 eec0fea8 eec19024 2007-10-17_14:59:54.16530
>> <0>[54537.551000] Call Trace: 2007-10-17_14:59:54.16534
>> <0>[54537.551000] [<c01e016a>] jnode_of_page+0x1a/0x270
>> 2007-10-17_14:59:54.16537 <0>[54537.551000] [<c020580c>]
>> uf_readpages_filler+0x11c/0x2d0 2007-10-17_14:59:54.16540
>> <0>[54537.551000] [<c015a3cd>] read_cache_pages+0x8d/0xd0
>> 2007-10-17_14:59:54.16542 <0>[54537.551000] [<c02056f0>]
>> uf_readpages_filler+0x0/0x2d0 2007-10-17_14:59:54.16545
>> <0>[54537.551000] [<c02549a2>] __spin_lock_init+0x32/0x90
>> 2007-10-17_14:59:54.16548 <0>[54537.551000] [<c01eb5e3>]
>> reiser4_txn_begin+0x43/0x60 2007-10-17_14:59:54.16550
>> <0>[54537.551000] [<c01e8bf6>] _reiser4_init_context+0x66/0x90
>> 2007-10-17_14:59:54.16553 <0>[54537.551000] [<c0205a0a>]
>> readpages_unix_file+0x4a/0xa0 2007-10-17_14:59:54.16555
>> <0>[54537.551000] [<c02059c0>] readpages_unix_file+0x0/0xa0
>> 2007-10-17_14:59:54.16558 <0>[54537.551000] [<c0159dc4>]
>> __do_page_cache_readahead+0x174/0x260 2007-10-17_14:59:54.16561
>> <0>[54537.551000] [<c01530cf>] find_get_page+0x1f/0x60
>> 2007-10-17_14:59:54.16563 <0>[54537.551000] [<c0155aee>]
>> filemap_nopage+0x14e/0x3b0 2007-10-17_14:59:54.16566
>> <0>[54537.551000] [<c015fb9a>] __handle_mm_fault+0x12a/0x970
>> 2007-10-17_14:59:54.16569 <0>[54537.551000] [<c0174597>]
>> generic_file_llseek+0x37/0xd0 2007-10-17_14:59:54.16571
>> <0>[54537.551000] [<c0116399>] do_page_fault+0x259/0x620
>> 2007-10-17_14:59:54.16574 <0>[54537.551000] [<c0116320>]
>> do_page_fault+0x1e0/0x620 2007-10-17_14:59:54.16577 <0>[54537.551000]
>> [<c0174560>] generic_file_llseek+0x0/0xd0 2007-10-17_14:59:54.16581
>> <0>[54537.551000] [<c0116140>] do_page_fault+0x0/0x620
>> 2007-10-17_14:59:54.16586 <0>[54537.551000] [<c037891a>]
>> error_code+0x6a/0x70 2007-10-17_14:59:54.16589 <0>[54537.551000]
>> ======================= 2007-10-17_14:59:54.16592 <0>[54537.551000]
>> Code: ff 8b 06 90 8d 74 26 00 e8 6b af fe ff e9 fd fe ff ff 8b 06 bb
>> fe ff ff ff e8 5a af fe ff e9 ec fe ff ff 90 90 90 90 90 8b 40 10
>> <8b> 00 8b 80 24 01 00 00 8b 80 9c 02 00 00 83 c0 3c c3 8d 74 26
>> 2007-10-17_14:59:54.16595 <0>[54537.551000] EIP: [<c01f5fd3>]
>> reiser4_tree_by_page+0x3/0x20 SS:ESP 0068:e718dd2c
>> 2007-10-17_14:59:54.16598 kern.warn: [54537.553000]
>> reiser4[sshd(426)]: release_unix_file
>> (fs/reiser4/plugin/file/file.c:2409)[vs-44]:
>> 2007-10-17_14:59:54.16601 kern.warn: [54537.553000] WARNING: out of
>> memory?  2007-10-17_14:59:54.16603 kern.warn: [54537.553000]
>> reiser4[sshd(426)]: release_unix_file
>> (fs/reiser4/plugin/file/file.c:2409)[vs-44]:
>> 2007-10-17_14:59:54.16606 kern.warn: [54537.553000] WARNING: out of
>> memory?
>> 
>> I'm running Linux 2.6.22.1 with reiser4-for-2.6.22.patch.gz.  It
>> seems to be crashing on the filesystem that's running on top of a
>> dmcrypt device.
>> 
>> 
>> 

-- 
Hubert Chathi - Email/Jabber: hubert@uhoreg.ca - http://www.uhoreg.ca/
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