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)]: -- Regards, Sandeep -- Regards, Sandeep Winners expect to win in advance. Life is a self-fulfilling prophecy. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
