linux-ext4 - OOPs in ext4

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Date:	Wed, 21 May 2014 12:29:04 +0200
From:	Arturo Borrero Gonzalez <arturo.borrero.glez@...il.com>
To:	linux-ext4@...r.kernel.org
Subject: OOPs in ext4

Hi there!

I have an oops in a virtual machine using ext4 as fs.

The kernel is 3.14

[153468.339345] EXT4-fs error (device vda1):
ext4_mb_generate_buddy:756: group 50, 26334 clusters in bitmap, 26332
in gd; block bitmap corrupt.
[153468.340172] Aborting journal on device vda1-8.
[153468.340983] EXT4-fs (vda1): Remounting filesystem read-only
[153468.341304] ------------[ cut here ]------------
[153468.341369] WARNING: CPU: 4 PID: 16902 at fs/ext4/ext4_jbd2.c:259
__ext4_handle_dirty_metadata+0x5c/0x17f [ext4]()
[153468.341372] Modules linked in: loop snd_pcm snd_timer snd
parport_pc parport soundcore i2c_piix4 i2c_core psmouse pcspkr
microcode serio_raw virtio_balloon evdev processor thermal_sys button
ext4 crc16 jbd2 mbcache sg sr_mod cdrom ata_generic virtio_blk
virtio_net floppy ata_piix libata uhci_hcd virtio_pci virtio_ring
ehci_hcd virtio scsi_mod usbcore usb_common
[153468.341412] CPU: 4 PID: 16902 Comm: collect2 Not tainted 3.14.0-rc8+ #61
[153468.341414] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[153468.341417]  0000000000000000 0000000000000009 ffffffff813a5d47
0000000000000000
[153468.341422]  ffffffff810396af ffff880022f49498 ffffffffa0133e65
ffff880022cdde68
[153468.341426]  ffff880022cdde68 00000000ffffffe2 ffff880022f49498
0000000000000000
[153468.341430] Call Trace:
[153468.341488]  [<ffffffff813a5d47>] ? dump_stack+0x41/0x51
[153468.341523]  [<ffffffff810396af>] ? warn_slowpath_common+0x78/0x90
[153468.341536]  [<ffffffffa0133e65>] ?
__ext4_handle_dirty_metadata+0x5c/0x17f [ext4]
[153468.341549]  [<ffffffffa0133e65>] ?
__ext4_handle_dirty_metadata+0x5c/0x17f [ext4]
[153468.341559]  [<ffffffffa0114f1a>] ? ext4_dirty_inode+0x21/0x52 [ext4]
[153468.341569]  [<ffffffffa0114ef9>] ? ext4_evict_inode+0x2d8/0x2d8 [ext4]
[153468.341585]  [<ffffffffa013a37b>] ? ext4_free_blocks+0x757/0x809 [ext4]
[153468.341612]  [<ffffffff81132c66>] ? __find_get_block+0x154/0x162
[153468.341625]  [<ffffffffa01317cb>] ? ext4_ext_remove_space+0x621/0xbbc [ext4]
[153468.341639]  [<ffffffffa013fca2>] ? ext4_es_remove_extent+0x70/0x93 [ext4]
[153468.341651]  [<ffffffffa0132df4>] ? ext4_ext_truncate+0x7a/0x9e [ext4]
[153468.341661]  [<ffffffffa0112efb>] ? ext4_truncate+0x1b5/0x29f [ext4]
[153468.341672]  [<ffffffffa0114de9>] ? ext4_evict_inode+0x1c8/0x2d8 [ext4]
[153468.341678]  [<ffffffff811218e0>] ? evict+0xa3/0x153
[153468.341689]  [<ffffffff81118d37>] ? do_unlinkat+0x120/0x1c2
[153468.341696]  [<ffffffff810ec668>] ? vm_munmap+0x46/0x55
[153468.341705]  [<ffffffff813af022>] ? system_call_fastpath+0x16/0x1b
[153468.341708] ---[ end trace 7fd0a6c0fb901b79 ]---
[153468.341742] BUG: unable to handle kernel NULL pointer dereference
at 0000000000000028
[153468.342173] IP: [<ffffffffa0127318>] __ext4_error_inode+0x25/0x13c [ext4]
[153468.342547] PGD 37307067 PUD 36f57067 PMD 0
[153468.342854] Oops: 0000 [#1] SMP
[153468.343055] Modules linked in: loop snd_pcm snd_timer snd
parport_pc parport soundcore i2c_piix4 i2c_core psmouse pcspkr
microcode serio_raw virtio_balloon evdev processor thermal_sys button
ext4 crc16 jbd2 mbcache sg sr_mod cdrom ata_generic virtio_blk
virtio_net floppy ata_piix libata uhci_hcd virtio_pci virtio_ring
ehci_hcd virtio scsi_mod usbcore usb_common
[153468.344916] CPU: 4 PID: 16902 Comm: collect2 Tainted: G        W
 3.14.0-rc8+ #61
[153468.344916] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[153468.344916] task: ffff880036d74750 ti: ffff88003a9b0000 task.ti:
ffff88003a9b0000
[153468.344916] RIP: 0010:[<ffffffffa0127318>]  [<ffffffffa0127318>]
__ext4_error_inode+0x25/0x13c [ext4]
[153468.344916] RSP: 0018:ffff88003a9b1b18  EFLAGS: 00010296
[153468.344916] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
0000000000180002
[153468.344916] RDX: 00000000000012ea RSI: ffffffffa0151023 RDI:
0000000000000000
[153468.344916] RBP: ffffffffa014d9d0 R08: ffffffffa015406a R09:
0000000000000005
[153468.344916] R10: 0000000000000000 R11: ffffffff814e7700 R12:
00000000000012ea
[153468.344916] R13: 0000000000180002 R14: ffffffffa014d9d0 R15:
00000000000012ea
[153468.344916] FS:  00002b5afef92e40(0000) GS:ffff88003cf00000(0000)
knlGS:0000000000000000
[153468.344916] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[153468.344916] CR2: 0000000000000028 CR3: 0000000036bf4000 CR4:
00000000000006e0
[153468.344916] Stack:
[153468.344916]  00000000000012ea ffffffff813a3ceb 0000000000000009
ffffffff00000010
[153468.344916]  ffff88003a9b1b88 ffff88003a9b1b48 00000000000012ea
7fd0a6c0fb901b79
[153468.344916]  0000000000000000 0000000000001173 0000000000000002
ffffffffa0133b17
[153468.344916] Call Trace:
[153468.344916]  [<ffffffff813a3ceb>] ? printk+0x4f/0x54
[153468.344916]  [<ffffffffa0133b17>] ?
ext4_journal_abort_handle+0x2a/0x89 [ext4]
[153468.344916]  [<ffffffffa0133f77>] ?
__ext4_handle_dirty_metadata+0x16e/0x17f [ext4]
[153468.344916]  [<ffffffffa013a37b>] ? ext4_free_blocks+0x757/0x809 [ext4]
[153468.344916]  [<ffffffff81132c66>] ? __find_get_block+0x154/0x162
[153468.344916]  [<ffffffffa01317cb>] ? ext4_ext_remove_space+0x621/0xbbc [ext4]
[153468.344916]  [<ffffffffa013fca2>] ? ext4_es_remove_extent+0x70/0x93 [ext4]
[153468.344916]  [<ffffffffa0132df4>] ? ext4_ext_truncate+0x7a/0x9e [ext4]
[153468.344916]  [<ffffffffa0112efb>] ? ext4_truncate+0x1b5/0x29f [ext4]
[153468.344916]  [<ffffffffa0114de9>] ? ext4_evict_inode+0x1c8/0x2d8 [ext4]
[153468.344916]  [<ffffffff811218e0>] ? evict+0xa3/0x153
[153468.344916]  [<ffffffff81118d37>] ? do_unlinkat+0x120/0x1c2
[153468.344916]  [<ffffffff810ec668>] ? vm_munmap+0x46/0x55
[153468.344916]  [<ffffffff813af022>] ? system_call_fastpath+0x16/0x1b
[153468.344916] Code: 5d 41 5e 41 5f c3 41 55 49 89 cd 41 54 41 89 d4
55 48 89 f5 48 c7 c6 23 10 15 a0 53 48 89 fb 48 81 ec 88 00 00 00 4c
89 4c 24 78 <48> 8b 47 28 48 8b 57 40 48 8b 80 f8 02 00 00 48 8b 40 68
89 90
[153468.344916] RIP  [<ffffffffa0127318>] __ext4_error_inode+0x25/0x13c [ext4]
[153468.344916]  RSP <ffff88003a9b1b18>
[153468.344916] CR2: 0000000000000028
[153468.373561] ---[ end trace 7fd0a6c0fb901b7a ]---

Please, if you need additional info keep me in CC as i'm not
subscribed to the list.

Regards.

-- 
Arturo Borrero González
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