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Old 12-11-2008, 06:23 PM
Ben Armstrong
 
Default Bug#506586: linux-2.6: Kernel BUG, possibly related

Package: linux-2.6
Version: 2.6.26-9
Followup-For: Bug #506586


This morning my system partially froze. Before it completely froze, I
was able to see the SMB errors in the log like this:

Dec 11 06:25:40 bgpc kernel: [3720740.218089] Bad SMB: : dump of 48 bytes of data at 0xf77c6500
Dec 11 06:25:40 bgpc kernel: [3720740.218089] 00000023 424d53ff 0001852e 400180c0 # . . . <FF> S M B . . . . <C0> . . @
Dec 11 06:25:40 bgpc kernel: [3720740.218089] 00000000 00000000 00000000 0a3c0001 . . . . . . . . . . . . . . < .
Dec 11 06:25:40 bgpc kernel: [3720740.218089] d3830064 0000ff00 002b1000 00000040 d . . <D3> . <FF> . . . . + . @ . . .
Dec 11 06:26:03 bgpc kernel: [3720766.654384] CIFS VFS: server not responding
Dec 11 06:26:03 bgpc kernel: [3720766.654384] CIFS VFS: No response to cmd 46 mid 54147
Dec 11 06:26:03 bgpc kernel: [3720766.654384] CIFS VFS: Send error in read = -11
Dec 11 06:26:09 bgpc kernel: [3720774.412200] CIFS VFS: RFC1001 size 35 bigger than SMB for Mid=54153

After rebooting, I found this kernel BUG trace in syslog:

Dec 11 10:50:04 bgpc kernel: [3739430.555388] ------------[ cut here ]------------
Dec 11 10:50:04 bgpc kernel: [3739430.555396] kernel BUG at mm/slab.c:601!
Dec 11 10:50:04 bgpc kernel: [3739430.555399] invalid opcode: 0000 [#1] SMP
Dec 11 10:50:04 bgpc kernel: [3739430.555403] Modules linked in: usb_storage nls_cp437 ext2 loop vfat msdos fat nls_utf8 cifs nls_base i915 drm ppdev lp ipv6 ipt_LOG xt_tcpudp iptable_filter ip_tables x_tables fuse dm_snapshot dm_mirror dm_log dm_mod eeprom it87 hwmon_vid snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_pcm snd_mixer_oss snd_seq_dummy parport_pc parport snd_seq_oss snd_seq_midi_event snd_seq snd_timer snd_seq_device i2c_i801 iTCO_wdt i2c_core pcspkr snd rng_core soundcore snd_page_alloc shpchp pci_hotplug button intel_agp agpgart evdev ext3 jbd mbcache sg sr_mod cdrom sd_mod ata_generic usbhid hid ff_memless ata_piix libata scsi_mod dock floppy ide_pci_generic e100 mii ide_core uhci_hcd ehci_hcd usbcore thermal processor fan thermal_sys
Dec 11 10:50:04 bgpc kernel: [3739430.555492]
Dec 11 10:50:04 bgpc kernel: [3739430.555496] Pid: 10, comm: events/1 Not tainted (2.6.26-1-686 #1)
Dec 11 10:50:04 bgpc kernel: [3739430.555500] EIP: 0060:[<c017154a>] EFLAGS: 00010046 CPU: 1
Dec 11 10:50:04 bgpc kernel: [3739430.555508] EIP is at free_block+0x4e/0xf4
Dec 11 10:50:04 bgpc kernel: [3739430.555511] EAX: 00000000 EBX: f1691bd4 ECX: c2808780 EDX: c1050100
Dec 11 10:50:04 bgpc kernel: [3739430.555515] ESI: c28e8980 EDI: f13b5600 EBP: f7d14780 ESP: f749ff50
Dec 11 10:50:04 bgpc kernel: [3739430.555519] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Dec 11 10:50:04 bgpc kernel: [3739430.555524] Process events/1 (pid: 10, ti=f749e000 task=f747b5e0 task.ti=f749e000)
Dec 11 10:50:04 bgpc kernel: [3739430.555527] Stack: 00000000 00000000 00000002 f1691bd4 00000001 f1691bd4 00000002 f1691bc0
Dec 11 10:50:04 bgpc kernel: [3739430.555538] f13b5600 c0171668 00000000 f7d14780 f13b5600 f7d14780 c24096c0 00000000
Dec 11 10:50:04 bgpc kernel: [3739430.555548] c01722b2 00000000 00000000 f7428800 c24096c0 c017227a c012ef4e f7428800
Dec 11 10:50:04 bgpc kernel: [3739430.555559] Call Trace:
Dec 11 10:50:04 bgpc kernel: [3739430.555578] [<c0171668>] drain_array+0x78/0xa0
Dec 11 10:50:04 bgpc kernel: [3739430.555595] [<c01722b2>] cache_reap+0x38/0xcb
Dec 11 10:50:04 bgpc kernel: [3739430.555607] [<c017227a>] cache_reap+0x0/0xcb
Dec 11 10:50:04 bgpc kernel: [3739430.555613] [<c012ef4e>] run_workqueue+0x74/0xf2
Dec 11 10:50:04 bgpc kernel: [3739430.555624] [<c012f629>] worker_thread+0x0/0xbd
Dec 11 10:50:04 bgpc kernel: [3739430.555633] [<c012f6dc>] worker_thread+0xb3/0xbd
Dec 11 10:50:04 bgpc kernel: [3739430.555645] [<c01318dc>] autoremove_wake_function+0x0/0x2d
Dec 11 10:50:04 bgpc kernel: [3739430.555659] [<c013181b>] kthread+0x38/0x5d
Dec 11 10:50:04 bgpc kernel: [3739430.555663] [<c01317e3>] kthread+0x0/0x5d
Dec 11 10:50:04 bgpc kernel: [3739430.555669] [<c01044f3>] kernel_thread_helper+0x7/0x10
Dec 11 10:50:04 bgpc kernel: [3739430.555685] =======================
Dec 11 10:50:04 bgpc kernel: [3739430.555688] Code: 54 24 0c 8b 0c 82 8d 91 00 00 00 40 c1 ea 0c c1 e2 05 03 15 e0 04 41 c0 8b 02 25 00 40 00 00 85 c0 74 03 8b 52 0c 80 3a 00 78 04 <0f> 0b eb fe 8b 72 1c 8b 44 24 28 8b 16 8b 7c 85 68 8b 46 04 89
Dec 11 10:50:04 bgpc kernel: [3739430.555743] EIP: [<c017154a>] free_block+0x4e/0xf4 SS:ESP 0068:f749ff50
Dec 11 10:50:04 bgpc kernel: [3739430.555753] ---[ end trace b6f6da361535bf64 ]---

I tried upgrading to 2.6.26-11. Although I didn't see any more Bad
SMB errors in the log, the kernel did log a bug trace to the terminal
I was in at the time before the system froze again. This time syslog
didn't get written before the lockup so I can't include that trace.

At the time of the second freeze, I was recursively removing a
directory tree from a Samba 2.2.8 server located on an OpenVMS host.
The first freeze before the upgrade may have been related to activity
on the same server.

Ben

-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash



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Old 03-24-2009, 02:18 PM
Bas Zoetekouw
 
Default Bug#506586: linux-2.6: Kernel BUG, possibly related

Hi!

> This morning my system partially froze. Before it completely froze, I
> was able to see the SMB errors in the log like this:
>
> Dec 11 06:25:40 bgpc kernel: [3720740.218089] Bad SMB: : dump of 48 bytes of data at 0xf77c6500
> Dec 11 06:25:40 bgpc kernel: [3720740.218089] 00000023 424d53ff 0001852e 400180c0 # . . . <FF> S M B . . . . <C0> . . @
> Dec 11 06:25:40 bgpc kernel: [3720740.218089] 00000000 00000000 00000000 0a3c0001 . . . . . . . . . . . . . . < .
> Dec 11 06:25:40 bgpc kernel: [3720740.218089] d3830064 0000ff00 002b1000 00000040 d . . <D3> . <FF> . . . . + . @ . . .
> Dec 11 06:26:03 bgpc kernel: [3720766.654384] CIFS VFS: server not responding
> Dec 11 06:26:03 bgpc kernel: [3720766.654384] CIFS VFS: No response to cmd 46 mid 54147
> Dec 11 06:26:03 bgpc kernel: [3720766.654384] CIFS VFS: Send error in read = -11
> Dec 11 06:26:09 bgpc kernel: [3720774.412200] CIFS VFS: RFC1001 size 35 bigger than SMB for Mid=54153
> After rebooting, I found this kernel BUG trace in syslog:

I've been seeing similar crashes on my system when accessing cifs
shares. I can't trigger it reliably, although it mainly seems to occur
when listing directories (for example, while doing tab-expansion or
running a find query on a cifs share). It also sometimes gives a kernel
bug or oops in my logs, but other times, my computer just hangs or
reboots without anything visible in the logs.

--
+--------------------------------------------------------------+
| Bas Zoetekouw | Sweet day, so cool, so calm, so bright, |
|--------------------| The bridall of the earth and skie: |
| bas@zoetekouw.net | The dew shall weep thy fall tonight; |
+--------------------| For thou must die. |
+-----------------------------------------+



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