kernel BUG at fs/inode.c:1139!

Sandeep Kumar

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Nov 23, 2006, 2:35:19 AM11/23/06

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Hi all, I got the following error insidea kernel module.

My module made a call to the blkdev_get ( ) inside the module and I get the following error.

I also checked the line from fs/inode.c line number 1139 :

Its BUG_ON(inode->i_state == I_CLEAR);

What can be the possible reason for this assertion to hold true.
Kindly help.

Nov 22 17:54:34 localhost kernel: ------------[ cut here ]------------
Nov 22 17:54:34 localhost kernel: kernel BUG at fs/inode.c:1139!
Nov 22 17:54:34 localhost kernel: invalid opcode: 0000 [#1]
Nov 22 17:54:34 localhost kernel: Modules linked in: dm_cdp parport_pc lp parport autofs4 rfcomm l2cap bluetooth sunrpc dm_mod video button battery asus_acpi ac ipv6 uhci_hcd shpchp i2c_piix4 i2c_core snd_ens1371 gameport snd_rawmidi snd_ac97_codec snd_ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc pcnet32 mii floppy ext3 jbd BusLogic sd_mod scsi_mod
Nov 22 17:54:34 localhost kernel: CPU:    0
Nov 22 17:54:34 localhost kernel: EIP:    0060:[<c016507d>]    Tainted: P      VLI
Nov 22 17:54:34 localhost kernel: EFLAGS: 00010246   (2.6.18 #1)
Nov 22 17:54:34 localhost kernel: EIP is at iput+0x19/0x66
Nov 22 17:54:34 localhost kernel: eax: c032df20   ebx: cb7359c4   ecx: d0970798   edx: c116e6a0
Nov 22 17:54:34 localhost kernel: esi: c0ec5ec0   edi: 00000300   ebp: 00000000   esp: ca33de78
Nov 22 17:54:34 localhost kernel: ds: 007b   es: 007b   ss: 0068
Nov 22 17:54:34 localhost kernel: Process a.out (pid: 29096, ti=ca33d000 task=c533c0f0 task.ti=ca33d000)
Nov 22 17:54:34 localhost kernel: Stack: cb735940 d097039b c0ec5ec0 ca33de98 c0ec5ec4 00000006 d09705a2 00316764
Nov 22 17:54:34 localhost kernel:        00768e2c 0083b5e0 00768e2c 0083b740 b7ff2000 00000009 0083aff4 00000000
Nov 22 17:54:34 localhost kernel:        b7ff32ac b7ff63e0 00711fb4 007126d0 08048218 bfb8acf0 007046d8 00712878
Nov 22 17:54:34 localhost kernel: Call Trace:
Nov 22 17:54:34 localhost kernel: [<d097039b>] get_dev_info+0x72/0x150 [dm_cdp]
Nov 22 17:54:34 localhost kernel: [<d09705a2>] cdp_ioctl+0x129/0x28e [dm_cdp]
Nov 22 17:54:34 localhost kernel: [<c019e6b4>] file_has_perm+0x7f/0x88
Nov 22 17:54:34 localhost kernel: [<d0970479>] cdp_ioctl+0x0/0x28e [dm_cdp]
Nov 22 17:54:34 localhost kernel: [<c015fb29>] do_ioctl+0x39/0x48
Nov 22 17:54:34 localhost kernel: [<c015fd32>] vfs_ioctl+0x1fa/0x211
Nov 22 17:54:34 localhost kernel: [<c015fd8f>] sys_ioctl+0x46/0x5f
Nov 22 17:54:34 localhost kernel: [<c0102b33>] syscall_call+0x7/0xb
Nov 22 17:54:34 localhost kernel: Code: 04 89 33 89 5e 04 b8 d8 e2 32 c0 5b 5e e9 49 6b 16 00 53 89 c3 85 c0 74 5d 8b 80 c0 00 00 00 8b 40 20 83 bb 90 01 00 00 20 75 08 <0f> 0b 73 04 2f aa 2e c0 85 c0 74 0b 8b 50 14 85 d2 74 04 89 d8
Nov 22 17:54:34 localhost kernel: EIP: [<c016507d>] iput+0x19/0x66 SS:ESP 0068:ca33de78
Nov 22 17:55:50 localhost gpm[1997]: *** info [client.c(137)]:

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Regards,
Sandeep

Winners expect to win in advance. Life is a self-fulfilling prophecy.

Sandeep Kumar

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Nov 23, 2006, 2:37:59 AM11/23/06

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Regards,
Sandeep

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Arjan van de Ven

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Nov 23, 2006, 3:15:53 AM11/23/06

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On Thu, 2006-11-23 at 13:07 +0530, Sandeep Kumar wrote:
> Hi all, I got the following error insidea kernel module.
>
> My module made a call to the blkdev_get ( ) inside the module and I
> get the followi

Hi,

you forgot to attach your (full!) source code, or at least an URL to
your project page where we could download the source... how are we
supposed to help you ???? Please reply with this.

Greetings,
Arjan van de Ven
>
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if you want to mail me at work (you don't), use arjan (at) linux.intel.com
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