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Re: kernel BUG on umount



Fix available from akpm:

http://marc.theaimsgroup.com/?l=linux-kernel&m=115522451507465&w=2

Florencio.

On Thursday 10 August 2006 17:30, Lars G wrote:
> 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 kinichahau ~]$ sudo mount /mnt/backup/
> [rsl kinichahau ~]$ sudo umount /mnt/backup/
> Segmentation fault
> [rsl kinichahau ~]$
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: ------------[ cut here ]------------
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: kernel BUG at fs/dcache.c:615!
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: invalid opcode: 0000 [#1]
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: SMP
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: CPU:    0
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: EIP is at shrink_dcache_for_umount_subtree
> +0x146/0x1d7
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: eax: 0000005a   ebx: d5625b5c   ecx: c04248c1   edx:
> e2418eb8
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: esi: 00000001   edi: ea91aa30   ebp: e2418ee0   esp:
> e2418eb4
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: ds: 007b   es: 007b   ss: 0068
>
> Message from syslogd 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 kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: Stack: c063b692 d5625b5c 00000003 d5625bd8 00000001
> f8de3748 ea91aa30 00000003
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel:        ea91a800 f8df74c0 00000000 e2418eec c0487249
> ea91a800 e2418efc c047777a
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel:        c1b03040 ea91a800 e2418f0c c0477860 ea91a800
> f8df7480 e2418f1c c0477920
>
> Message from syslogd kinichahau at Thu Aug 10 22:17:53 2006 ...
> kinichahau kernel: Call Trace:
>
> Message from syslogd 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 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
>
> Mail terraformers gmail com
> Web http://researchlab.terraformers.de
> No Big Brother! http://kai.iks-jena.de/bigb


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