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| Kernel panic: kmem_alloc: NULL memory on KM_SLEEP request! http://forums.linhes.org/viewtopic.php?f=2&t=2206 |
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| Author: | Blammo [ Wed Aug 18, 2004 10:14 am ] |
| Post subject: | Kernel panic: kmem_alloc: NULL memory on KM_SLEEP request! |
Anyone else seen this? Backend: ASUS A7N8X Deluxe Althon XP 2400 at stock clock @ 166FSB KnoppMyth R4V4 1gig PC3200 ram @ 166FSB (2) PVR-250's two 160G HD's, EXT3 on boot partion, XFS on all others I got up this morning, and the CAPS LOCK / SCROLL LOCK on the keyboard were flashing. I turned on the monitor, and the machine was responsive, but mythbackend hadn't done anything since about 3am. I rebooted the machine after checking the logs, and all is well now, however, I'd love to know what died. Here's what I got from the logs. I'm including before and after to show the machine was alive, just not happy. /var/log/kern.log: Aug 18 01:00:04 backend1 kernel: saa7115: decoder disable output Aug 18 01:00:04 backend1 kernel: saa7115: decoder enable output Aug 18 03:07:48 backend1 kernel: Kernel panic: kmem_alloc: NULL memory on KM_SLEEP request! Aug 18 03:07:56 backend1 kernel: ivtv: needed 13 bufs for stream 0, received 6 differ by (7) bufs Aug 18 03:07:56 backend1 kernel: ivtv: SCHED: free_q: 0 elements Aug 18 03:07:56 backend1 kernel: ivtv: SCHED: dma_q: 0 elements Aug 18 03:07:56 backend1 kernel: ivtv: SCHED: full_q: 1018 elements Aug 18 04:07:41 backend1 kernel: Kernel panic: kmem_alloc: NULL memory on KM_SLEEP request! Aug 18 08:20:51 backend1 kernel: <4>nfsd: last server has exited Aug 18 08:20:51 backend1 kernel: nfsd: unexporting all filesystems /var/log/messages: Aug 18 02:49:53 backend1 -- MARK -- Aug 18 03:07:56 backend1 kernel: ivtv: needed 13 bufs for stream 0, received 6 differ by (7) bufs Aug 18 03:07:56 backend1 kernel: ivtv: SCHED: free_q: 0 elements Aug 18 03:07:56 backend1 kernel: ivtv: SCHED: dma_q: 0 elements Aug 18 03:07:56 backend1 kernel: ivtv: SCHED: full_q: 1018 elements Aug 18 03:29:53 backend1 -- MARK -- Aug 18 03:49:53 backend1 -- MARK -- Aug 18 04:09:53 backend1 -- MARK -- Aug 18 04:29:53 backend1 -- MARK -- Aug 18 04:49:53 backend1 -- MARK -- Aug 18 05:09:53 backend1 -- MARK -- Aug 18 05:29:53 backend1 -- MARK -- Aug 18 05:49:53 backend1 -- MARK -- Aug 18 06:09:53 backend1 -- MARK -- Aug 18 06:29:53 backend1 -- MARK -- Aug 18 06:49:53 backend1 -- MARK -- Aug 18 07:09:53 backend1 -- MARK -- Aug 18 07:29:53 backend1 -- MARK -- Aug 18 07:49:53 backend1 -- MARK -- Aug 18 08:09:53 backend1 -- MARK -- Aug 18 08:20:51 backend1 kernel: <4>nfsd: last server has exited Aug 18 08:20:51 backend1 kernel: nfsd: unexporting all filesystems Aug 18 08:20:51 backend1 kernel: note: rpciod[738] exited with preempt_count 1 Aug 18 08:20:51 backend1 kernel: note: lockd[737] exited with preempt_count 1 Aug 18 08:20:51 backend1 kernel: Kernel logging (proc) stopped. Aug 18 08:20:51 backend1 kernel: Kernel log daemon terminating. Aug 18 08:20:51 backend1 exiting on signal 15 Aug 18 08:22:45 backend1 syslogd 1.4.1#10: restart. /var/log/mythtv/mythbackend.log: 2004-08-18 00:40:21 MainServer::HandleAnnounce FileTransfer 2004-08-18 00:40:21 adding: frontend1 as a remote file transfer 2004-08-18 01:00:02 Started recording "XXVIII Summer Olympics" on channel: 1012 on cardid: 1, sourceid 1 2004-08-18 01:00:02 Changing from None to RecordingOnly 2004-08-18 03:02:47 Fast-Forwarding from 147008 to 215625 2004-08-18 03:02:49 Transcoding /myth/tv/1065_20040817110000_20040817130000.nuv done Bad transcoding info 2004-08-18 03:07:50 IOBOUND - blocking in ThreadedFileWriter::Write() 2004-08-18 04:00:00 Changing from RecordingOnly to None 2004-08-18 04:00:00 Found changes in the todo list. 2004-08-18 04:00:01 Scheduled 166 items in 0.630198 seconds. 2004-08-18 06:29:51 Found changes in the todo list. 2004-08-18 06:29:51 Scheduled 173 items in 0.451657 seconds. QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty Starting up as the master server. 2004-08-18 08:22:58 mythbackend: MythBackend started as master server QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty 2004-08-18 08:23:02 Deleting /myth/tv/1008_20040815040000_20040815050000.nuv.tmp 2004-08-18 08:23:02 mythbackend version: 0.15.20040525-1 www.mythtv.org 2004-08-18 08:23:02 Enabled verbose msgs : important general QSettings: error creating /.qt QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty QSettings: error creating /.qt QSettings::sync: filename is null/empty 2004-08-18 08:23:02 Transcoding from /myth/tv/1008_20040815040000_20040815050000.nuv to /myth/tv/1008_20040815040000_20040815050000.nuv.tmp any ideas? |
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| Author: | Blammo [ Wed Aug 18, 2004 12:22 pm ] |
| Post subject: | |
Looks like this might be an XFS problem (which I run on /cache , /myth, and /video partitions) http://oss.sgi.com/archives/linux-xfs/2 ... 00114.html http://www.dragoninc.on.ca/mail-archive ... /0162.html http://linux-xfs.sgi.com/projects/xfs/m ... 00286.html |
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| Author: | Blammo [ Mon Aug 23, 2004 2:55 pm ] |
| Post subject: | |
More information now, going to start a new thread. after trying: - ext3, xfs - (2) new motherboards (both NForce) - new ram, cpu, video card - 2 new harddrives - reinstall of KnoppMyth R4V4 - clean install of KnoppMyth R4V4.1 - disabling UDMA on motherboard - hdparm -d0 / hdparm -d1 I came to the conclusion it was a driver / IO issue in with Knopp and Nforce chipsets. I reformatted the box on Fedora1, pulled the data back in, and the backend has been running clean for 48 hours. |
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