Hi,
Has this bug got fixed? Are you still able to reproduce the problem with
2.6.20?
> BUG: unable to handle kernel NULL pointer dereference at virtual address
> 00000029
> printing eip:
> e0c25de0
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT
> Modules linked in: cbc blkcipher binfmt_misc rfcomm l2cap nfs nfsd exportfs
> lock
> d sunrpc ip_nat_irc ip_nat_ftp ip_conntrack_irc ip_conntrack_ftp xt_state
> ipt_RE
> JECT ipt_LOG iptable_mangle iptable_filter iptable_nat ip_nat ip_tables
> ip_connt
> rack cryptoloop loop sha256 aes it87 hwmon_vid i2c_isa i2c_core md5 ipv6
> af_pack
> et radeon drm sd_mod dm_crypt dm_mod snd_via82xx snd_ac97_codec snd_ac97_bus
> snd
> _pcm_oss snd_mixer_oss analog gameport snd_pcm snd_timer snd_page_alloc
> snd_mpu4
> 01_uart snd_rawmidi usb_storage 8250_pnp 8250 serial_core rtc snd soundcore
> pris
> m54 usbhid via_agp agpgart firmware_class evdev ext3 jbd mbcache raid1 raid0
> mul
> tipath linear md_mod ide_cd cdrom ide_disk ehci_hcd uhci_hcd usbcore
> via_rhine m
> ii via82cxxx ide_core sym53c8xx scsi_transport_spi scsi_mod unix
> CPU: 0
> EIP: 0060:[<e0c25de0>] Not tainted VLI
> EFLAGS: 00010202 (2.6.19.1 #1)
> EIP is at journal_grab_journal_head+0xd/0x36 [jbd]
> eax: dfd54000 ebx: 00000029 ecx: 000000d0 edx: 00000029
> esi: c12ae6e0 edi: 00000000 ebp: c09576ec esp: dfd55dfc
> ds: 007b es: 007b ss: 0068
> Process kswapd0 (pid: 132, ti=dfd54000 task=dff98590 task.ti=dfd54000)
> Stack: 00000029 e0c215ca 00000246 c09579c4 c28b44b8 c11717a0 00000001
> e0c5559a
> 000000d0 00000001 c02c2d00 c0134758 c12ae6e0 c28b430c c0139da9
> dfd55f1c
> 00000014 dfd55f80 00000020 00000000 00000000 00000020 0000000b
> 00000001
> Call Trace:
> [<e0c215ca>] journal_try_to_free_buffers+0x5e/0x13d [jbd]
> [<e0c5559a>] ext3_releasepage+0x0/0x72 [ext3]
> [<c0134758>] try_to_release_page+0x34/0x46
> [<c0139da9>] shrink_inactive_list+0x468/0x6f4
> [<c0138b2a>] __pagevec_release+0x15/0x1d
> [<c01397f7>] shrink_active_list+0x386/0x38e
> [<c013a0e9>] shrink_zone+0xb4/0xd5
> [<c013a570>] kswapd+0x288/0x38f
> [<c0125eea>] autoremove_wake_function+0x0/0x35
> [<c013a2e8>] kswapd+0x0/0x38f
> [<c0125e31>] kthread+0xad/0xd8
> [<c0125d84>] kthread+0x0/0xd8
> [<c010379f>] kernel_thread_helper+0x7/0x10
> =======================
> Code: 04 00 74 03 83 0a 04 89 e0 25 00 e0 ff ff ff 48 14 8b 40 08 a8 08 74 05
> e9
> c9 ab 64 df c3 53 89 c2 89 e0 25 00 e0 ff ff ff 40 14 <8b> 02 31 db f6 c4 40
> 74
> 06 8b 5a 20 ff 43 04 89 e0 25 00 e0 ff
> EIP: [<e0c25de0>] journal_grab_journal_head+0xd/0x36 [jbd] SS:ESP
> 0068:dfd55dfc
> <6>note: kswapd0[132] exited with preempt_count 1
>
> ##
> ## sound + backup from ide to USB
> ##
>
> Jan 7 20:03:52 fantasio kernel: Oops: 0000 [#1]
> Jan 7 20:03:52 fantasio kernel: PREEMPT
> Jan 7 20:03:52 fantasio kernel: Modules linked in: cbc blkcipher sd_mod
> visor usbserial binfmt_misc rfcomm l2cap nfs nfsd exportfs lockd sunrpc
> ip_nat_irc ip_nat_ftp ip_conntrack_irc ip_conntrack_ftp xt_state
> ipt_REJECT ipt_LOG iptable_mangle iptable_filter iptable_nat ip_nat ip_tables
> ip_conntrack cryptoloop loop sha256 aes it87 hwmon_vid i2c_isa i2c_core md5
> ipv6 af_packet usb_storage radeon drm dm_crypt dm_mod sn
> d_via82xx snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm
> snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi analog gameport 8250_pnp
> 8250 serial_core rtc snd prism54 via_agp soundcore agpgart f
> irmware_class evdev ext3 jbd mbcache raid1 raid0 multipath linear md_mod
> ide_cd cdrom ide_disk usbhid via_rhine mii via82cxxx ide_core ehci_hcd
> uhci_hcd usbcore sym53c8xx scsi_transport_spi scsi_mod unix
> Jan 7 20:03:52 fantasio kernel: CPU: 0
> Jan 7 20:03:52 fantasio kernel: EIP: 0060:[pg0+546304086/1070171136]
> Not tainted VLI
> Jan 7 20:03:52 fantasio kernel: EFLAGS: 00010206 (2.6.19.1 #1)
> Jan 7 20:03:52 fantasio kernel: EIP is at walk_page_buffers+0x1c/0x7e [ext3]
> Jan 7 20:03:52 fantasio kernel: eax: 00004000 ebx: 00004023 ecx:
> 00000000 edx: 00001001
> Jan 7 20:03:52 fantasio kernel: esi: 00003000 edi: c54976ec ebp:
> 00001000 esp: d13b7e24
> Jan 7 20:03:52 fantasio kernel: ds: 007b es: 007b ss: 0068
> Jan 7 20:03:52 fantasio kernel: Process pdflush (pid: 12292, ti=d13b6000
> task=d42a0550 task.ti=d13b6000)
> Jan 7 20:03:52 fantasio kernel: Stack: 00000000 df1783d8 00004023 c125d100
> df1783d8 c54976ec df1783d8 e0c67bf8
> Jan 7 20:03:52 fantasio kernel: 00001000 00000000 e0c650b8 00000000
> c125d100 d13b7f70 c125d100 00000007
> Jan 7 20:03:52 fantasio kernel: 00000000 d13b7f70 c01373fc 00000000
> 0000000e c9181664 0000000e c15cd1ac
> Jan 7 20:03:52 fantasio kernel: Call Trace:
> Jan 7 20:03:52 fantasio kernel: [pg0+546315256/1070171136]
> ext3_ordered_writepage+0xd7/0x194 [ext3]
> Jan 7 20:03:52 fantasio kernel: [pg0+546304184/1070171136] bget_one+0x0/0x6
> [ext3]
> Jan 7 20:03:52 fantasio kernel: [generic_writepages+375/682]
> generic_writepages+0x177/0x2aa
> Jan 7 20:03:52 fantasio kernel: [pg0+546315041/1070171136]
> ext3_ordered_writepage+0x0/0x194 [ext3]
> Jan 7 20:03:52 fantasio kernel: [do_writepages+41/48]
> do_writepages+0x29/0x30
> Jan 7 20:03:52 fantasio kernel: [__writeback_single_inode+414/811]
> __writeback_single_inode+0x19e/0x32b
> Jan 7 20:03:52 fantasio kernel: [schedule_timeout+140/160]
> schedule_timeout+0x8c/0xa0
> Jan 7 20:03:52 fantasio kernel: [process_timeout+0/5]
> process_timeout+0x0/0x5
> Jan 7 20:03:52 fantasio kernel: [sync_sb_inodes+348/529]
> sync_sb_inodes+0x15c/0x211
> Jan 7 20:03:52 fantasio kernel: [writeback_inodes+103/206]
> writeback_inodes+0x67/0xce
> Jan 7 20:03:52 fantasio kernel: [background_writeout+99/142]
> background_writeout+0x63/0x8e
> Jan 7 20:03:52 fantasio kernel: [pdflush+0/431] pdflush+0x0/0x1af
> Jan 7 20:03:52 fantasio kernel: [pdflush+267/431] pdflush+0x10b/0x1af
> Jan 7 20:03:52 fantasio kernel: [background_writeout+0/142]
> background_writeout+0x0/0x8e
> Jan 7 20:03:52 fantasio kernel: [kthread+173/216] kthread+0xad/0xd8
> Jan 7 20:03:52 fantasio kernel: [kthread+0/216] kthread+0x0/0xd8
> Jan 7 20:03:52 fantasio kernel: [kernel_thread_helper+7/16]
> kernel_thread_helper+0x7/0x10
> Jan 7 20:03:52 fantasio kernel: =======================
> Jan 7 20:03:52 fantasio kernel: Code: 41 04 3b 02 74 f0 31 c0 39 d9 5b 0f 97
> c0 c3 55 57 89 d7 56 31 f6 53 89 d3 83 ec 0c 89 44 24 04 89 0c 24 8b 6a 10 01
> ee 3b 34 24 <8b> 43 04 89 f2 89 44 24 08 0f 96 c0 29 e
> a 3b 54 24 20 0f 93 c2
> Jan 7 20:03:52 fantasio kernel: EIP: [pg0+546304086/1070171136]
> walk_page_buffers+0x1c/0x7e [ext3] SS:ESP 0068:d13b7e24
>
Honza
--
Jan Kara <[EMAIL PROTECTED]>
SuSE CR Labs
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