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Subject2.6.25-rc6: kernel BUG at fs/sysfs/file.c:89
Hi,

while attempting to test the patch which should fix the dm-crypt hang[0],
I applied the diff to -rc6. After rebooting I increased disk i/o and
shortly after the box rebooted - I noticed this earlier with -rc5 too, but
had no debug messages at hand. Well, the box is running again and tar(1)
is reading with 32MB/s for some time now - but is not rebooting, which is
good :)
(I changed kernel.panic and kernel.panic_on_oops to zero).
However, it's printing stuff like this:

[ 2632.423419] ------------[ cut here ]------------
[ 2632.423762] kernel BUG at fs/sysfs/file.c:89!
[ 2632.424089] invalid opcode: 0000 [#1]
[ 2632.424398] Modules linked in: sha256_generic act_police sch_ingress cls_u32 sch_sfq sch_cbq ipt_ULOG x_tables nfsd lockd nfs_acl auth_rpcgss exportfs tun sunrpc fuse twofish_i586 twofish_common eeprom w83l785ts asb100 hwmon_vid usb_storage zd1211rw firmware_class mac80211 i2c_nforce2 snd_intel8x0 snd_ac97_codec i2c_core cfg80211 ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc
[ 2632.426407]
[ 2632.426651] Pid: 10297, comm: tar Not tainted (2.6.25-rc6 #3)
[ 2632.427019] EIP: 0060:[<c01a8add>] EFLAGS: 00010212 CPU: 0
[ 2632.427386] EIP is at sysfs_read_file+0xdd/0xf0
[ 2632.427717] EAX: 00000001 EBX: f5691f00 ECX: 00000003 EDX: f7ca1e70
[ 2632.428100] ESI: 00001000 EDI: f7ca1ed0 EBP: f5691f14 ESP: f6f3ff54
[ 2632.428482] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
[ 2632.428758] Process tar (pid: 10297, ti=f6f3f000 task=f6290d60 task.ti=f6f3f000)
[ 2632.428921] Stack: c0164ff7 f5ca6000 00001000 0866ce00 c0550d50 f7d8fab8 f776b180 0866ce00
[ 2632.429174] c01a8a00 00001000 c016868d f6f3ffa0 00000003 f776b180 fffffff7 0866ce00
[ 2632.429430] f6f3f000 c0168a91 f6f3ffa0 00000000 00000000 00000000 00000003 00001000
[ 2632.429688] Call Trace:
[ 2632.429884] [<c0164ff7>] kmem_cache_free+0xa7/0xf0
[ 2632.430023] [<c01a8a00>] sysfs_read_file+0x0/0xf0
[ 2632.430159] [<c016868d>] vfs_read+0x9d/0x140
[ 2632.430333] [<c0168a91>] sys_read+0x41/0x70
[ 2632.430657] [<c0102dee>] sysenter_past_esp+0x5f/0xa5
[ 2632.431006] =======================
[ 2632.431308] Code: 18 89 f0 5b 5e 5f 5d c3 be ed ff ff ff eb e8 b8 d0 00 00 00 be f4 ff ff ff e8 e0 31 fa ff 85 c0 89 43 0c 0f 85 6d ff ff ff eb cc <0f> 0b 90 eb fd 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 83 ec
[ 2632.432467] EIP: [<c01a8add>] sysfs_read_file+0xdd/0xf0 SS:ESP 0068:f6f3ff54
[ 2632.432630] ---[ end trace 9959fa4f11f46a8e ]---
Please see the full dmesg and .config: http://nerdbynature.de/bits/2.6.25-rc6/

Thanks,
Christian.

[0] http://lkml.org/lkml/2008/3/17/214
--
BOFH excuse #197:

I'm sorry a pentium won't do, you need an SGI to connect with us.


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