Messages in this thread | | | From | Marcin Kowalski <> | Subject | Kernel 2.4.3 Crash - (Kernel BUG at highmem.c:155) | Date | Tue, 10 Apr 2001 18:11:15 +0200 |
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Hi All
This is quite a long email which I have split in two for those that are interested problem and background...
---Problem---
Kernel Panic Occured with Messages: Kernel BUG at highmem.c:155 Invalid Operand ???? With sshd somewhere in the mix.
Unfortunately I did a task dump with SYSRQ before I could get the rest of the info.. and syslogd had stopped logging to disk already. I then had to reboot.
Looking at line 155 : /* * A count must never go down to zero * without a TLB flush! */ switch (--pkmap_count[nr]) { case 0: BUG(); case 1: wake_up(&pkmap_map_wait); } spin_unlock(&kmap_lock);
WHat went wrong???? to make the count go to zero??
---Background----
I am running Linux 2.4.3 on A HP netserver 2000r, it has 1.2gigs of RAM, at dual 933mhz Xeon (Piii actually, but paid for Xeons??) and a Netraid 4m SCSI Card with 6x 18.4gig HP Drives in a Raid 5 Configuration with No Hot Standby. The Root FS is on a 9.2 GIG HP Scsi Drive. Both root and home are reiserfs (9.4 gig and 85gig respectively). The kernel is patch with the axboe-scsi-patch and the latest aacraid patch. Running under SUse Linux 7.0 (new modutils).
THe server is running samba, httpd, sendmail, mrtg, named and a number of other porcesses but the loadaverage tends to stay below 1.0 mostly, although it exhibits erratic behaviour with load climbing to 3-5-6 with top showing no apparent candidate, with most of the time spent in SYStem calls. Occassional lockups lasting 5-20 seconds were experienced when working on the box under 2.4.2 but seem to be much better in 2.4.3.
Today the server tends to "eat up" shared+used memory over time eventually using +- 700mb of RAM with no process reflecting this in top.
Running SWAPoff today, when 64mb of swap was being used, resulted in complete machine lockup for about 30-40 seconds.
I strongly suspect the aacraid drivers but need further proof to convince the powers that be to swap for a Mylex or something better supported....
Any advice/answers would be very welcome.
TIA MARCin
-- ----------------------------- Marcin Kowalski Linux/Perl Developer Datrix Solutions Cel. 082-400-7603 ***Open Source Kicks Ass*** ----------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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