On Sun, Jul 27, 2008 at 08:41:03PM +0200, Kris Kennaway wrote: > Michael Toth wrote: > > >Reading symbols from /boot/kernel/acpi.ko...Reading symbols from > >/boot/kernel/acpi.ko.symbols...done. > >done. > >Loaded symbols for /boot/kernel/acpi.ko > >#0 doadump () at pcpu.h:195 > >195 __asm __volatile("movl %%fs:0,%0" : "=r" (td)); > >(kgdb) backtrace > >#0 doadump () at pcpu.h:195 > >#1 0xc0782597 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418 > >#2 0xc0782859 in panic (fmt=Variable "fmt" is not available. > >) at /usr/src/sys/kern/kern_shutdown.c:572 > >#3 0xc0a8b39c in trap_fatal (frame=0xe7d6ba90, eva=392) at > >/usr/src/sys/i386/i386/trap.c:899 > >#4 0xc0a8b620 in trap_pfault (frame=0xe7d6ba90, usermode=0, eva=392) at > >/usr/src/sys/i386/i386/trap.c:812 > >#5 0xc0a8bfcc in trap (frame=0xe7d6ba90) at > >/usr/src/sys/i386/i386/trap.c:490 > >#6 0xc0a71bdb in calltrap () at /usr/src/sys/i386/i386/exception.s:139 > >#7 0xc0775284 in _mtx_lock_sleep (m=0xc600d174, tid=3318745216, opts=0, > >file=0x0, line=0) at /usr/src/sys/kern/kern_mutex.c:339 > >#8 0xc09a93d7 in vm_fault (map=0xc56b5570, vaddr=671809536, > >fault_type=2 '\002', fault_flags=8) at /usr/src/sys/vm/vm_fault.c:293 > >#9 0xc0a8b50b in trap_pfault (frame=0xe7d6bd38, usermode=1, > >eva=671813488) at /usr/src/sys/i386/i386/trap.c:789 > >#10 0xc0a8be57 in trap (frame=0xe7d6bd38) at > >/usr/src/sys/i386/i386/trap.c:357 > >#11 0xc0a71bdb in calltrap () at /usr/src/sys/i386/i386/exception.s:139 > >#12 0x2806e607 in ?? () > >Previous frame inner to this frame (corrupt stack?) > >(kgdb) q > > Not much there, check for RAM/hardware problems.
Yes, it does not look sensible. Just to be sure, show the source lines around vm/vm_fault.c:293, and, from the frame 8, print the content of the fs and fs.first_object. The fault address 0x188 would suggest that some NULL pointer dereference is being performed, but assuming faulted line is VM_OBJECT_LOCK(fs.first_object); no appropriate structure member with offset 0x188 could be imagined.
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