kernel BUG on umount

Lars G terraformers at gmail.com
Thu Aug 10 20:30:21 UTC 2006 

On Thu, 2006-08-10 at 01:43 -0300, Florêncio Guimarães wrote:
> I'm having this error since a few kernels ago on shutdown or even trying to
> unmount mannualy.
> Same error on 2.6.17-1.2532.fc6.
> Should I fill a fedora bug or kernel.org?
> Any ideas?
> 
> Thanks.
> 
> ---------------------------------
> Aug  6 20:33:59 voyager kernel: BUG: Dentry df0029e4{i=3,n=.reiserfs_priv} 
> still in use (1) [unmount of reiserfs hda6]
> Aug  6 20:33:59 voyager kernel: ------------[ cut here ]------------
> Aug  6 20:33:59 voyager kernel: kernel BUG at fs/dcache.c:615!
> Aug  6 20:33:59 voyager kernel: invalid opcode: 0000 [#1]
> Aug  6 20:33:59 voyager kernel: SMP
> Aug  6 20:33:59 voyager kernel: last sysfs file: /block/hda/removable
> Aug  6 20:33:59 voyager kernel: Modules linked in: sbp2 ohci1394 ieee1394 
> acpi_cpufreq sd_mod sg usb_storage scsi_mod snd_rtctimer i915 drm ipt_LOG 
> xt_tcpudp x_tables ipv6 hidp l2cap bluetooth vfat fat reiser
> fs dm_mirror dm_mod video sbs i2c_ec button battery asus_acpi ac parport_pc lp 
> parport intel_rng joydev snd_intel8x0 snd_ac97_codec snd_ac97_bus 
> snd_seq_dummy bcm43xx snd_seq_oss snd_seq_midi_event ieee80211s
> oftmac ieee80211 snd_seq ieee80211_crypt 8139cp ehci_hcd snd_seq_device 
> snd_pcm_oss snd_mixer_oss snd_pcm 8139too mii i2c_i801 i2c_core snd_timer 
> uhci_hcd ide_cd pcspkr cdrom snd soundcore snd_page_alloc seri
> o_raw ext3 jbd
> Aug  6 20:33:59 voyager kernel: CPU:    0
> Aug  6 20:33:59 voyager kernel: EIP:    0060:[<c0486e52>]    Not tainted VLI
> Aug  6 20:33:59 voyager kernel: EFLAGS: 00010246   (2.6.17-1.2505.fc6 #1)
> Aug  6 20:33:59 voyager kernel: EIP is at 
> shrink_dcache_for_umount_subtree+0x146/0x1d2
> Aug  6 20:33:59 voyager kernel: eax: 0000005a   ebx: df0029e4   ecx: c042481d   
> edx: d99e5eb8
> Aug  6 20:33:59 voyager kernel: esi: 00000001   edi: de097190   ebp: d99e5ee0   
> esp: d99e5eb4
> Aug  6 20:34:00 voyager kernel: ds: 007b   es: 007b   ss: 0068
> Aug  6 20:34:00 voyager kernel: Process umount (pid: 6576, ti=d99e5000 
> task=cdda9540 task.ti=d99e5000)
> Aug  6 20:34:00 voyager kernel: Stack: c0630b2f df0029e4 00000003 df002a60 
> 00000001 e0b50288 de097190 00000003
> Aug  6 20:34:00 voyager kernel:        de096f60 e0b641e0 00000000 d99e5eec 
> c04878fb de096f60 d99e5efc c0477f62
> Aug  6 20:34:00 voyager kernel:        df596344 de096f60 d99e5f0c c0478048 
> de096f60 e0b641a0 d99e5f1c c0478108
> Aug  6 20:34:00 voyager kernel: Call Trace:
> Aug  6 20:34:00 voyager kernel:  [<c04878fb>] 
> shrink_dcache_for_umount+0x31/0x3e
> Aug  6 20:34:00 voyager kernel:  [<c0477f62>] generic_shutdown_super+0x19/0xdf
> Aug  6 20:34:00 voyager kernel:  [<c0478048>] kill_block_super+0x20/0x32
> Aug  6 20:34:00 voyager kernel:  [<c0478108>] deactivate_super+0x5d/0x6f
> Aug  6 20:34:00 voyager kernel:  [<c048ae59>] mntput_no_expire+0x42/0x72
> Aug  6 20:34:00 voyager kernel:  [<c047db47>] path_release_on_umount+0x15/0x18
> Aug  6 20:34:00 voyager kernel:  [<c048bf88>] sys_umount+0x1e7/0x21b
> Aug  6 20:34:00 voyager kernel:  [<c048bfc9>] sys_oldumount+0xd/0xf
> Aug  6 20:34:00 voyager kernel:  [<c0403faf>] syscall_call+0x7/0xb
> Aug  6 20:34:00 voyager kernel: DWARF2 unwinder stuck at syscall_call+0x7/0xb
> Aug  6 20:34:00 voyager kernel: Leftover inexact backtrace:
> Aug  6 20:34:00 voyager kernel:  [<c0405379>] show_stack_log_lvl+0x8a/0x95
> Aug  6 20:34:00 voyager kernel:  [<c04054b1>] show_registers+0x12d/0x19a
> Aug  6 20:34:00 voyager kernel:  [<c04056ae>] die+0x190/0x293
> Aug  6 20:34:00 voyager kernel:  [<c060917a>] do_trap+0x7c/0x96
> Aug  6 20:34:00 voyager kernel:  [<c0405e9e>] do_invalid_op+0x89/0x93
> Aug  6 20:34:00 voyager kernel:  [<c0404be1>] error_code+0x39/0x40
> Aug  6 20:34:00 voyager kernel:  [<c04878fb>] 
> shrink_dcache_for_umount+0x31/0x3e
> Aug  6 20:34:00 voyager kernel:  [<c0477f62>] generic_shutdown_super+0x19/0xdf
> Aug  6 20:34:00 voyager kernel:  [<c0478048>] kill_block_super+0x20/0x32
> Aug  6 20:34:00 voyager kernel:  [<c0478108>] deactivate_super+0x5d/0x6f
> Aug  6 20:34:00 voyager kernel:  [<c048ae59>] mntput_no_expire+0x42/0x72
> Aug  6 20:34:00 voyager kernel:  [<c047db47>] path_release_on_umount+0x15/0x18
> Aug  6 20:34:00 voyager kernel:  [<c048bf88>] sys_umount+0x1e7/0x21b
> Aug  6 20:34:00 voyager kernel:  [<c048bfc9>] sys_oldumount+0xd/0xf
> Aug  6 20:34:00 voyager kernel:  [<c0403faf>] syscall_call+0x7/0xb
> Aug  6 20:34:00 voyager kernel: Code: 02 00 00 8b 40 1c 85 d2 8b 00 c7 45 f0 
> 00 00 00 00 74 06 8b 52 20 89 55 f0 57 50 56 51 ff 75 f0 53 68 2f 0b 63 c0 e8 
> 88 e0 f9 ff <0f> 0b 67 02 23 0b 63 c0 83 c4 1c 8b 73
> 30 39 de 75 04 31 f6 eb
> Aug  6 20:34:00 voyager kernel: EIP: [<c0486e52>] 
> shrink_dcache_for_umount_subtree+0x146/0x1d2 SS:ESP 0068:d99e5eb4


same here with reiserfs, kernel- 2.6.17-1.2543.fc6 i686

i get

[rsl at kinichahau ~]$ sudo mount /mnt/backup/
[rsl at kinichahau ~]$ sudo umount /mnt/backup/
Segmentation fault
[rsl at kinichahau ~]$ 
Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: ------------[ cut here ]------------

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: kernel BUG at fs/dcache.c:615!

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: invalid opcode: 0000 [#1]

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: SMP 

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: CPU:    0

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: EIP is at shrink_dcache_for_umount_subtree
+0x146/0x1d7

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: eax: 0000005a   ebx: d5625b5c   ecx: c04248c1   edx:
e2418eb8

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: esi: 00000001   edi: ea91aa30   ebp: e2418ee0   esp:
e2418eb4

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: ds: 007b   es: 007b   ss: 0068

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: Process umount (pid: 3686, ti=e2418000 task=d5a35540
task.ti=e2418000)

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: Stack: c063b692 d5625b5c 00000003 d5625bd8 00000001
f8de3748 ea91aa30 00000003 

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel:        ea91a800 f8df74c0 00000000 e2418eec c0487249
ea91a800 e2418efc c047777a 

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel:        c1b03040 ea91a800 e2418f0c c0477860 ea91a800
f8df7480 e2418f1c c0477920 

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: Call Trace:

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: Code: 02 00 00 8b 40 1c 85 d2 8b 00 c7 45 f0 00 00 00
00 74 06 8b 52 20 89 55 f0 57 50 56 51 ff 75 f0 53 68 92 b6 63 c0 e8 26
e8 f9 ff <0f> 0b 67 02 86 b6 63 c0 83 c4 1c 8b 73 30 39 de 75 04 31 f6
eb 

Message from syslogd at kinichahau at Thu Aug 10 22:17:53 2006 ...
kinichahau kernel: EIP: [<c0486758>] shrink_dcache_for_umount_subtree
+0x146/0x1d7 SS:ESP 0068:e2418eb4


-- 
Lars

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