I just got a panic with GENERIC 5.3-RELEASE:
Script started on Mon Nov 8 08:42:44 2004
$ cd /usr/src/sys/i386/compile/GENERIC
$ kgdb kernel /var/crash/vmcore.1
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so:
Undefined symbol "ps_pglobal_lookup"]
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This GDB was configured as "i386-marcel-freebsd".
(no debugging symbols found)...0xc060bcea in doadump ()
(kgdb) bt
#0 0xc060bcea in doadump ()
#1 0xc060c2bd in boot ()
#2 0xc060c579 in panic ()
#3 0xc0603a68 in _mtx_lock_spin ()
#4 0xc06288e2 in sleepq_lookup ()
#5 0xc0612818 in msleep ()
#6 0xc05fa3b7 in kse_release ()
#7 0xc07b641b in syscall ()
#8 0xc07a5bcf in Xint0x80_syscall ()
#9 0x0000002f in ?? ()
#10 0x0000002f in ?? ()
:
#36 0xc192b000 in ?? ()
#37 0xc061c617 in sched_switch ()
Previous frame inner to this frame (corrupt stack?)
(kgdb) quit
$ cat /var/crash/info.1
Good dump found on device /dev/ad0s3b
Architecture: i386
Architecture version: 1
Dump length: 268419072B (255 MB)
Blocksize: 512
Dumptime: Mon Nov 8 08:00:32 2004
Hostname: peter.osted.lan
Versionstring: FreeBSD 5.3-RELEASE #0: Fri Nov 5 21:59:27 CET 2004
pho@peter.osted.lan:/usr/src/sys/i386/compile/GENERIC
Panicstring: spin lock held too long
Bounds: 1
$ exit
exit
peter# exit
$ exit
Script done on Mon Nov 8 08:44:25 2004
I'm compiling a new kernel with "-g", should it happen again.
--
Peter Holm