Messages in this thread | | | Date | Wed, 12 Mar 2008 10:51:38 +0100 | From | Tomasz Chmielewski <> | Subject | Re: sysfs Kernel BUG when RAID bitmap file has IO errors |
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Tomasz Chmielewski schrieb:
(...)
> Let's access "/sys/block/md0/md/dev-sdd1/super": > > # cat /sys/block/md0/md/dev-sdd1/super > > # dmesg -c > ------------[ cut here ]------------ > Kernel BUG at 78178626 [verbose debug info unavailable]
It turns out a broken RAID bitmap file has nothing to do with it - the same happens on a different machine without a bitmap file:
------------[ cut here ]------------ Kernel BUG at 7817736a [verbose debug info unavailable] invalid opcode: 0000 [#1] Modules linked in: as_iosched nfs lockd nfs_acl sunrpc bonding dm_mirror dm_snapshot e1000 sata_mv
Pid: 2494, comm: cat Not tainted (2.6.24.3-1 #1) EIP: 0060:[<7817736a>] EFLAGS: 00010212 CPU: 0 EIP is at sysfs_read_file+0x88/0xd4 EAX: 00000001 EBX: 961b5880 ECX: 00000000 EDX: 964ef360 ESI: 00001000 EDI: 964ef3c0 EBP: 9705bd04 ESP: 971f1f54 DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 Process cat (pid: 2494, ti=971f0000 task=970ad9a0 task.ti=971f0000) Stack: 96443080 0804b4d8 00001000 0804e000 961b5894 7835f6f0 96193400 0804e000 781772e2 00001000 78149bd5 971f1fa0 00001000 96193400 fffffff7 0804e000 971f0000 78149f03 971f1fa0 00000000 00000000 00000000 00000003 0804e000 Call Trace: [<781772e2>] sysfs_read_file+0x0/0xd4 [<78149bd5>] vfs_read+0x88/0x10a [<78149f03>] sys_read+0x41/0x67 [<78103bba>] syscall_call+0x7/0xb ======================= Code: c0 74 61 8b 47 18 8b 4b 0c 8b 40 04 89 43 24 89 e8 8b 74 24 14 8b 57 14 ff 16 89 c6 89 f8 e8 18 0b 00 00 81 fe ff 0f 00 00 7e 04 <0f> 0b eb fe 85 f6 78 31 c7 43 20 00 00 00 00 89 33 eb 07 be f4 EIP: [<7817736a>] sysfs_read_file+0x88/0xd4 SS:ESP 0068:971f1f54 ---[ end trace e39b88900c26a529 ]---
Certainly, it doesn't happen with 2.6.18 kernels.
-- Tomasz Chmielewski http://wpkg.org
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