Created attachment 68322 [details] photograph of Oops on console I have gotten a number of these since installing this 2.6.38-10-generic kernel and even though I have a serial console connected to this machine, for some reason these are not making it out of the console. Below is a transcription from a photograph (attached) of the console. Please excuse any typos. BUG: unable to handle kernel NULL pointer dereference at 0000002f IP: [<c1148665>] sync_inodes_sb+0xb5/0x140 *pde - 0587d067 *pte = 00000000 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/block/dm-10/dm/name Modules linked in: ivtv cx2341x lirc_dev nfs fscache nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs autofs4 snd_usb_audio snd_hwdep snd_usbmidi_lib tuner_simple tuner_types snd_pcm wm8775 snd_seq_midi tda9887 tda8290 xc5000 snd_rawmidi tea5767 snd_seq_midi_event au8522 tuner snd_seq i915 snd_timer cx25840 au0828 snd_seq_device drm_kms_helper dvb_core drm videobuf_vmalloc videobuf_core tveeprom v4l2_common snd ppdev shpchp videodev i2c_algo_bit soundcore snd_page_alloc dcdbas parport_pc video parport pcspkr hwmon_vid b44 r8169 ssb sata_sil floppy [last unloaded: cx2341x ] Pid 30176, comm: mount Not tainted 2.6.38-10-generic #46-Ubuntu Dell Computer Coporation Dimension 2400 EIP: 0060:[<c1148665>] EFLAGS: 00010246 CPU: 0 EIP is at sync_inodes_sb+0xb5/0x140 EAX: 00800000 EBX: c002fd8c ECX: 00000000 EDX: c002fddc ESI: ffffffff EDI: f0c0cc70 EBP: c58a1ef8 ESP: c58a1eb8 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process mount (pid: 30176, it=c58a0000 task-c0013f20 task.ti=c58a0000 Stack: f0c0cc00 c7c61f14 7fffffff f0c0cc00 00000001 00000000 c58a1ed0 c58a1ed0 c58a1edc 00000000 00000202 c58a1ee4 c58a1ee4 f0c0cc00 00000001 c116b7d0 c58a1f0c c114c7ff f0c0cc00 fffffff3 00000000 c58a1f18 c114c869 f0c0cc00 Call Trace: [<c116b7d0>] ? dquot_quota_sync+0x0/0x2d0 [<c114c7ff>] __sync_filesystem+0x7f/0x90 [<c114c869>] sync_filesystem+0x39/0x50 [<c112a046>] do_remount_sb+0x56/0x110 [<c11405f8>] do_remount+0xb8/0x100 [<c1142aec>] do_mount+0x16c/0x1e0 [<c1142ecb>] sys_mount+0x6b/0xa0 [<c150a194>] syscall_call+0x7/0xb Code: 70 c7 45 c4 00 00 00 00 83 eb 50 eb 04 90 8d 58 b0 8b 43 50 0f 18 00 90 8d 53 50 39 fa 74 4f f6 43 30 38 75 e9 8b b3 c4 00 00 00 <8b> 56 30 85 d2 74 dc 89 d8 e8 3d 5f ff ff b8 40 49 90 c1 e8 a3 EIP: [<c1148665>] sync_inodes_sb+0xb5/0x140 SS:ESP 0068:c58a1eb8 CR2: 000000000000002f Any ideas what's going wrong here?
Had this happen again today. It seems to only happen on resume from suspend, although certainly not every resume, just some of them. Any thoughts given that and the oops itself?
(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Wed, 10 Aug 2011 11:39:33 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=40832 > > Summary: NULL pointer deref in sync_inodes_sb > Product: IO/Storage > Version: 2.5 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: Block Layer > AssignedTo: axboe@kernel.dk > ReportedBy: brian@interlinx.bc.ca > Regression: No > > > Created an attachment (id=68322) > --> (https://bugzilla.kernel.org/attachment.cgi?id=68322) > photograph of Oops on console > > I have gotten a number of these since installing this 2.6.38-10-generic > kernel > and even though I have a serial console connected to this machine, for some > reason these are not making it out of the console. Below is a transcription > from a photograph (attached) of the console. Please excuse any typos. > > BUG: unable to handle kernel NULL pointer dereference at 0000002f > IP: [<c1148665>] sync_inodes_sb+0xb5/0x140 > *pde - 0587d067 *pte = 00000000 > Oops: 0000 [#1] SMP > last sysfs file: /sys/devices/virtual/block/dm-10/dm/name > Modules linked in: ivtv cx2341x lirc_dev nfs fscache nfsd lockd nfs_acl > auth_rpcgss sunrpc exportfs autofs4 snd_usb_audio snd_hwdep snd_usbmidi_lib > tuner_simple tuner_types snd_pcm wm8775 snd_seq_midi tda9887 tda8290 xc5000 > snd_rawmidi tea5767 snd_seq_midi_event au8522 tuner snd_seq i915 snd_timer > cx25840 au0828 snd_seq_device drm_kms_helper dvb_core drm videobuf_vmalloc > videobuf_core tveeprom v4l2_common snd ppdev shpchp videodev i2c_algo_bit > soundcore snd_page_alloc dcdbas parport_pc video parport pcspkr hwmon_vid b44 > r8169 ssb sata_sil floppy [last unloaded: cx2341x ] > > Pid 30176, comm: mount Not tainted 2.6.38-10-generic #46-Ubuntu Dell Computer > Coporation Dimension 2400 > EIP: 0060:[<c1148665>] EFLAGS: 00010246 CPU: 0 > EIP is at sync_inodes_sb+0xb5/0x140 > EAX: 00800000 EBX: c002fd8c ECX: 00000000 EDX: c002fddc > ESI: ffffffff EDI: f0c0cc70 EBP: c58a1ef8 ESP: c58a1eb8 > DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > Process mount (pid: 30176, it=c58a0000 task-c0013f20 task.ti=c58a0000 > Stack: > f0c0cc00 c7c61f14 7fffffff f0c0cc00 00000001 00000000 c58a1ed0 c58a1ed0 > c58a1edc 00000000 00000202 c58a1ee4 c58a1ee4 f0c0cc00 00000001 c116b7d0 > c58a1f0c c114c7ff f0c0cc00 fffffff3 00000000 c58a1f18 c114c869 f0c0cc00 > Call Trace: > [<c116b7d0>] ? dquot_quota_sync+0x0/0x2d0 > [<c114c7ff>] __sync_filesystem+0x7f/0x90 > [<c114c869>] sync_filesystem+0x39/0x50 > [<c112a046>] do_remount_sb+0x56/0x110 > [<c11405f8>] do_remount+0xb8/0x100 > [<c1142aec>] do_mount+0x16c/0x1e0 > [<c1142ecb>] sys_mount+0x6b/0xa0 > [<c150a194>] syscall_call+0x7/0xb > Code: 70 c7 45 c4 00 00 00 00 83 eb 50 eb 04 90 8d 58 b0 8b 43 50 0f 18 00 90 > 8d 53 50 39 fa 74 4f f6 43 30 38 75 e9 8b b3 c4 00 00 00 <8b> 56 30 85 d2 74 > dc > 89 d8 e8 3d 5f ff ff b8 40 49 90 c1 e8 a3 > EIP: [<c1148665>] sync_inodes_sb+0xb5/0x140 SS:ESP 0068:c58a1eb8 > CR2: 000000000000002f > > Any ideas what's going wrong here? > I cc'ed linux-fsdevel - we might have subsequently fixed this, perhaps someone can recall... 2.6.38 is somewhat dated in kernel time - are you able to run something more recent? (If we did fix it, it's likely that the fix was backported into 2.6.38.8 or earlier. It's unclear what kernel "2.6.38-10-generic" is based on).