http://bugzilla.kernel.org/show_bug.cgi?id=12433 Summary: Oops while resizing an ext4 LVM2 volume Product: File System Version: 2.5 KernelVersion: 2.6.29-rc1 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 AssignedTo: fs_ext4@xxxxxxxxxxxxxxxxxxxx ReportedBy: peter@xxxxxxxxxxxxxxxxxx Latest working kernel version: N/A Earliest failing kernel version: 2.6.29-rc1 Distribution: Gentoo Linux amd64 Hardware Environment: Software Environment: e2fsprogs-1.41.3 Problem Description: During a resize of an ext4 formated lvm2 volume, a NULL pointer was derefrenced. When I executed this command on a mounted LVM2 volume: # resize2fs /dev/vg1/ftp The following error happened: Jan 11 20:56:41 kerwien kernel: BUG: unable to handle kernel NULL pointer dereference at (null) Jan 11 20:56:41 kerwien kernel: IP: [<ffffffffa01c6b59>] ext4_block_bitmap+0x9/0x30 [ext4] Jan 11 20:56:41 kerwien kernel: PGD 1a873067 PUD 3eded067 PMD 0 Jan 11 20:56:41 kerwien kernel: Oops: 0000 [#1] SMP Jan 11 20:56:41 kerwien kernel: last sysfs file: /sys/devices/virtual/block/dm-0/range Jan 11 20:56:41 kerwien kernel: CPU 0 Jan 11 20:56:41 kerwien kernel: Modules linked in: ide_cd_mod cdrom dm_mod zlib_deflate zlib_inflate cryptomgr aead crypto_blkcipher crc32c libcrc32c crypto_hash crypto_algapi nfs lockd sunrpc cpufreq_ondemand snd_seq snd_seq_device ext4 jbd2 crc16 powernow_k8 freq_table usbhid snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm ehci_hcd ohci_hcd snd_timer floppy snd sg usbcore forcedeth soundcore k8temp snd_page_alloc hwmon thermal processor button ext3 jbd mbcache sata_nv libata sd_mod amd74xx [last unloaded: cdrom] Jan 11 20:56:41 kerwien kernel: Pid: 5202, comm: resize2fs Not tainted 2.6.29-rc1 #3 Jan 11 20:56:41 kerwien kernel: RIP: 0010:[<ffffffffa01c6b59>] [<ffffffffa01c6b59>] ext4_block_bitmap+0x9/0x30 [ext4] Jan 11 20:56:41 kerwien kernel: RSP: 0018:ffff88001a9cdbc0 EFLAGS: 00010246 Jan 11 20:56:41 kerwien kernel: RAX: ffff88003ec90000 RBX: 0000000000000200 RCX: 00000000c0000100 Jan 11 20:56:41 kerwien kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8800333dfc00 Jan 11 20:56:41 kerwien kernel: RBP: ffff8800333dfc00 R08: ffff88001a9cc000 R09: 0000000000000000 Jan 11 20:56:41 kerwien kernel: R10: ffff880001011ff0 R11: 0000000000000001 R12: 0000000000000202 Jan 11 20:56:41 kerwien kernel: R13: ffff88003ec90000 R14: 0000000000000000 R15: ffff88003ec90000 Jan 11 20:56:41 kerwien kernel: FS: 00007fa469b62710(0000) GS:ffffffff80593040(0000) knlGS:00000000f7caeaf0 Jan 11 20:56:41 kerwien kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Jan 11 20:56:41 kerwien kernel: CR2: 0000000000000000 CR3: 000000003eaa6000 CR4: 00000000000006e0 Jan 11 20:56:41 kerwien kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jan 11 20:56:41 kerwien kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Jan 11 20:56:41 kerwien kernel: Process resize2fs (pid: 5202, threadinfo ffff88001a9cc000, task ffff88003ef5e310) Jan 11 20:56:41 kerwien kernel: Stack: Jan 11 20:56:41 kerwien kernel: ffffffffa01b8877 0000000000000003 0000000000000246 0000800000000191 Jan 11 20:56:41 kerwien kernel: ffff88003f7b0a20 0000000000000000 ffff88000a5c23d8 0000000000000000 Jan 11 20:56:41 kerwien kernel: ffff88003ed400c0 ffff88003e40e888 ffff8800333dfc00 0000000000000191 Jan 11 20:56:41 kerwien kernel: Call Trace: Jan 11 20:56:41 kerwien kernel: [<ffffffffa01b8877>] ? ext4_init_block_bitmap+0x347/0x3d0 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffffa01d5955>] ? ext4_mb_add_groupinfo+0x105/0x1f0 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffffa01cdbf1>] ? ext4_group_add+0xa01/0x1330 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffff802b3c80>] ? sync_buffer+0x0/0x50 Jan 11 20:56:41 kerwien kernel: [<ffffffff80430290>] ? io_schedule+0x20/0x30 Jan 11 20:56:41 kerwien kernel: [<ffffffff8024fa70>] ? wake_bit_function+0x0/0x30 Jan 11 20:56:41 kerwien kernel: [<ffffffffa01c26bf>] ? ext4_ioctl+0x55f/0x6d0 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffff8035af48>] ? do_output_char+0x208/0x210 Jan 11 20:56:41 kerwien kernel: [<ffffffff8024fc39>] ? remove_wait_queue+0x19/0x60 Jan 11 20:56:41 kerwien kernel: [<ffffffff80230903>] ? __wake_up+0x43/0x70 Jan 11 20:56:41 kerwien kernel: [<ffffffff8029f74f>] ? vfs_ioctl+0x2f/0xa0 Jan 11 20:56:41 kerwien kernel: [<ffffffff8029f9db>] ? do_vfs_ioctl+0x21b/0x530 Jan 11 20:56:41 kerwien kernel: [<ffffffff8042fc9f>] ? thread_return+0x41/0x592 Jan 11 20:56:41 kerwien kernel: [<ffffffff8029fd39>] ? sys_ioctl+0x49/0x80 Jan 11 20:56:41 kerwien kernel: [<ffffffff8020c335>] ? device_not_available+0x15/0x20 Jan 11 20:56:41 kerwien kernel: [<ffffffff8020b61b>] ? system_call_fastpath+0x16/0x1b Jan 11 20:56:41 kerwien kernel: Code: 66 90 48 89 c7 45 31 ed e8 15 bd 0e e0 e9 e1 fa ff ff 0f 0b eb fe 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 87 88 02 00 00 31 d2 <8b> 0e 48 83 38 3f 76 07 8b 56 20 48 c1 e2 20 89 c8 48 09 c2 48 Jan 11 20:56:41 kerwien kernel: RIP [<ffffffffa01c6b59>] ext4_block_bitmap+0x9/0x30 [ext4] Jan 11 20:56:41 kerwien kernel: RSP <ffff88001a9cdbc0> Jan 11 20:56:41 kerwien kernel: CR2: 0000000000000000 Jan 11 20:56:41 kerwien kernel: ---[ end trace 19e39679f9447577 ]--- Jan 11 20:56:41 kerwien kernel: ------------[ cut here ]------------ Jan 11 20:56:41 kerwien kernel: WARNING: at kernel/exit.c:1010 do_exit+0x72b/0x850() Jan 11 20:56:41 kerwien kernel: Hardware name: Jan 11 20:56:41 kerwien kernel: Modules linked in: ide_cd_mod cdrom dm_mod zlib_deflate zlib_inflate cryptomgr aead crypto_blkcipher crc32c libcrc32c crypto_hash crypto_algapi nfs lockd sunrpc cpufreq_ondemand snd_seq snd_seq_device ext4 jbd2 crc16 powernow_k8 freq_table usbhid snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm ehci_hcd ohci_hcd snd_timer floppy snd sg usbcore forcedeth soundcore k8temp snd_page_alloc hwmon thermal processor button ext3 jbd mbcache sata_nv libata sd_mod amd74xx [last unloaded: cdrom] Jan 11 20:56:41 kerwien kernel: Pid: 5202, comm: resize2fs Tainted: G D 2.6.29-rc1 #3 Jan 11 20:56:41 kerwien kernel: Call Trace: Jan 11 20:56:41 kerwien kernel: [<ffffffff8023afc2>] warn_slowpath+0xf2/0x130 Jan 11 20:56:41 kerwien kernel: [<ffffffff80367f65>] notify_update+0x25/0x30 Jan 11 20:56:41 kerwien kernel: [<ffffffff80368213>] vt_console_print+0x223/0x2f0 Jan 11 20:56:41 kerwien kernel: [<ffffffff8020bf4e>] common_interrupt+0xe/0x13 Jan 11 20:56:41 kerwien kernel: [<ffffffff8023bca7>] vprintk+0x227/0x390 Jan 11 20:56:41 kerwien kernel: [<ffffffff8023be5e>] printk+0x4e/0x60 Jan 11 20:56:41 kerwien kernel: [<ffffffff8023be5e>] printk+0x4e/0x60 Jan 11 20:56:41 kerwien kernel: [<ffffffff8023e73b>] do_exit+0x72b/0x850 Jan 11 20:56:41 kerwien kernel: [<ffffffff80253886>] up+0x16/0x50 Jan 11 20:56:41 kerwien kernel: [<ffffffff8032ccb0>] bit_cursor+0x0/0x5e0 Jan 11 20:56:41 kerwien kernel: [<ffffffff8023b7e5>] release_console_sem+0x1b5/0x1f0 Jan 11 20:56:41 kerwien kernel: [<ffffffff8020f5a5>] oops_end+0xa5/0xb0 Jan 11 20:56:41 kerwien kernel: [<ffffffff80228b53>] do_page_fault+0x323/0x890 Jan 11 20:56:41 kerwien kernel: [<ffffffffa01c7fe6>] ext4_error+0x96/0xc0 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffff80431cef>] page_fault+0x1f/0x30 Jan 11 20:56:41 kerwien kernel: [<ffffffffa01c6b59>] ext4_block_bitmap+0x9/0x30 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffffa01b8877>] ext4_init_block_bitmap+0x347/0x3d0 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffffa01d5955>] ext4_mb_add_groupinfo+0x105/0x1f0 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffffa01cdbf1>] ext4_group_add+0xa01/0x1330 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffff802b3c80>] sync_buffer+0x0/0x50 Jan 11 20:56:41 kerwien kernel: [<ffffffff80430290>] io_schedule+0x20/0x30 Jan 11 20:56:41 kerwien kernel: [<ffffffff8024fa70>] wake_bit_function+0x0/0x30 Jan 11 20:56:41 kerwien kernel: [<ffffffffa01c26bf>] ext4_ioctl+0x55f/0x6d0 [ext4] Jan 11 20:56:41 kerwien kernel: [<ffffffff8035af48>] do_output_char+0x208/0x210 Jan 11 20:56:41 kerwien kernel: [<ffffffff8024fc39>] remove_wait_queue+0x19/0x60 Jan 11 20:56:41 kerwien kernel: [<ffffffff80230903>] __wake_up+0x43/0x70 Jan 11 20:56:41 kerwien kernel: [<ffffffff8029f74f>] vfs_ioctl+0x2f/0xa0 Jan 11 20:56:41 kerwien kernel: [<ffffffff8029f9db>] do_vfs_ioctl+0x21b/0x530 Jan 11 20:56:41 kerwien kernel: [<ffffffff8042fc9f>] thread_return+0x41/0x592 Jan 11 20:56:41 kerwien kernel: [<ffffffff8029fd39>] sys_ioctl+0x49/0x80 Jan 11 20:56:41 kerwien kernel: [<ffffffff8020c335>] device_not_available+0x15/0x20 Jan 11 20:56:41 kerwien kernel: [<ffffffff8020b61b>] system_call_fastpath+0x16/0x1b Jan 11 20:56:41 kerwien kernel: ---[ end trace 19e39679f9447578 ]--- Jan 11 20:57:27 kerwien kernel: ------------[ cut here ]------------ Jan 11 20:57:27 kerwien kernel: WARNING: at fs/namespace.c:636 mntput_no_expire+0x146/0x150() Jan 11 20:57:27 kerwien kernel: Hardware name: Jan 11 20:57:27 kerwien kernel: Modules linked in: ide_cd_mod cdrom dm_mod zlib_deflate zlib_inflate cryptomgr aead crypto_blkcipher crc32c libcrc32c crypto_hash crypto_algapi nfs lockd sunrpc cpufreq_ondemand snd_seq snd_seq_device ext4 jbd2 crc16 powernow_k8 freq_table usbhid snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm ehci_hcd ohci_hcd snd_timer floppy snd sg usbcore forcedeth soundcore k8temp snd_page_alloc hwmon thermal processor button ext3 jbd mbcache sata_nv libata sd_mod amd74xx [last unloaded: cdrom] Jan 11 20:57:27 kerwien kernel: Pid: 5230, comm: umount Tainted: G D W 2.6.29-rc1 #3 Jan 11 20:57:27 kerwien kernel: Call Trace: Jan 11 20:57:27 kerwien kernel: [<ffffffff8023afc2>] warn_slowpath+0xf2/0x130 Jan 11 20:57:27 kerwien kernel: [<ffffffff802a8c75>] mntput_no_expire+0x35/0x150 Jan 11 20:57:27 kerwien kernel: [<ffffffff8029cf29>] __link_path_walk+0xbe9/0xd50 Jan 11 20:57:27 kerwien kernel: [<ffffffff802305cc>] update_curr+0x6c/0xc0 Jan 11 20:57:27 kerwien kernel: [<ffffffff802305cc>] update_curr+0x6c/0xc0 Jan 11 20:57:27 kerwien kernel: [<ffffffff8023055a>] wakeup_preempt_entity+0x3a/0x40 Jan 11 20:57:27 kerwien kernel: [<ffffffff80237413>] check_preempt_wakeup+0x113/0x150 Jan 11 20:57:27 kerwien kernel: [<ffffffff80233dae>] try_to_wake_up+0x10e/0x1b0 Jan 11 20:57:27 kerwien kernel: [<ffffffff802a1bd5>] pollwake+0x55/0x60 Jan 11 20:57:27 kerwien kernel: [<ffffffff80233e50>] default_wake_function+0x0/0x10 Jan 11 20:57:27 kerwien kernel: [<ffffffff8022fdcb>] __wake_up_common+0x5b/0x90 Jan 11 20:57:27 kerwien kernel: [<ffffffff802a8d86>] mntput_no_expire+0x146/0x150 Jan 11 20:57:27 kerwien kernel: [<ffffffff802a9066>] sys_umount+0x76/0x380 Jan 11 20:57:27 kerwien kernel: [<ffffffff8020b61b>] system_call_fastpath+0x16/0x1b Jan 11 20:57:27 kerwien kernel: ---[ end trace 19e39679f9447579 ]--- Steps to reproduce: Unknown. I have resized ext4 volumes a couple of time. This error has only happened once so far. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
