Date: Fri, 26 Dec 2008 16:04:22 +0100 (CET) From: Barbara <barbara.xxx1975@libero.it> To: FreeBSD-stable@FreeBSD.org Subject: Fatal trap 12: page fault while in kernel mode (swi6: task queue) Message-ID: <4719661.485641230303862495.JavaMail.defaultUser@defaultHost>
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Can anyone help understanding the reason?
# uname -rsm
FreeBSD 6.4-STABLE i386
# kgdb kernel.debug /var/crash/vmcore.7
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "i386-marcel-freebsd"...
Unread portion of
the kernel message buffer:
acd0: WARNING - PREVENT_ALLOW read data overrun 18>0
kernel trap 12 with interrupts disabled
Fatal trap 12: page fault while in
kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x104
fault code =
supervisor read, page not present
instruction pointer = 0x20:0xc0541da5
stack
pointer = 0x28:0xe5928c00
frame pointer = 0x28:0xe5928c18
code
segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran
1
processor eflags = resume, IOPL = 0
current process = 17 (swi6: task queue)
trap number = 12
panic: page fault
cpuid = 0
Uptime: 4h16m22s
Physical memory:
2031 MB
Dumping 204 MB: 189 173 157 141 125 109 93 77 61 45 29 13
Reading
symbols from /boot/kernel/linux.ko...done.
Loaded symbols for
/boot/kernel/linux.ko
Reading symbols from /boot/modules/nvidia.ko...done.
Loaded symbols for /boot/modules/nvidia.ko
Reading symbols from
/boot/kernel/acpi.ko...done.
Loaded symbols for /boot/kernel/acpi.ko
Reading
symbols from /boot/kernel/linprocfs.ko...done.
Loaded symbols for
/boot/kernel/linprocfs.ko
Reading symbols from /boot/kernel/logo_saver.ko...
done.
Loaded symbols for /boot/kernel/logo_saver.ko
#0 doadump () at pcpu.h:
165
165 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt
#0
doadump () at pcpu.h:165
#1 0xc054d7d9 in boot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:410
#2 0xc054dba6 in panic (fmt=0xc0736cc9 "%
s") at /usr/src/sys/kern/kern_shutdown.c:566
#3 0xc071812c in trap_fatal
(frame=0xe5928bc0, eva=0) at /usr/src/sys/i386/i386/trap.c:838
#4 0xc07177e4
in trap (frame=
{tf_fs = 8, tf_es = 40, tf_ds = 40, tf_edi = -960560384,
tf_esi = 4, tf_ebp = -443380712, tf_isp = -443380756, tf_ebx = -942867596,
tf_edx = 6, tf_ecx = 4, tf_eax = 1, tf_trapno = 12, tf_err = 0, tf_eip =
-1068229211, tf_cs = 32, tf_eflags = 65538, tf_esp = -942867596, tf_ss = 0}) at
/usr/src/sys/i386/i386/trap.c:270
#5 0xc06ff98a in calltrap () at
/usr/src/sys/i386/i386/exception.s:139
#6 0xc0541da5 in _mtx_lock_sleep
(m=0xc7ccfb74, tid=3334406912, opts=0, file=0x0, line=0) at
/usr/src/sys/kern/kern_mutex.c:546
#7 0xc054ca79 in _sema_post
(sema=0xc7ccfb74, file=0x0, line=0) at /usr/src/sys/kern/kern_sema.c:79
#8
0xc04705e3 in ata_completed (context=0xc7ccfb28, dummy=1) at
/usr/src/sys/dev/ata/ata-queue.c:481
#9 0xc057547d in taskqueue_run
(queue=0xc6c8a000) at /usr/src/sys/kern/subr_taskqueue.c:257
#10 0xc0575793 in
taskqueue_swi_run (dummy=0x0) at /usr/src/sys/kern/subr_taskqueue.c:299
#11
0xc052ff1b in ithread_execute_handlers (p=0xc6bef860, ie=0xc6c44e80) at
/usr/src/sys/kern/kern_intr.c:682
#12 0xc0530077 in ithread_loop
(arg=0xc6c62510) at /usr/src/sys/kern/kern_intr.c:766
#13 0xc052e800 in
fork_exit (callout=0xc0530010 <ithread_loop>, arg=0x1, frame=0x1) at
/usr/src/sys/kern/kern_fork.c:788
#14 0xc06ff9ec in fork_trampoline () at
/usr/src/sys/i386/i386/exception.s:208
(kgdb) frame 6
#6 0xc0541da5 in
_mtx_lock_sleep (m=0xc7ccfb74, tid=3334406912, opts=0, file=0x0, line=0) at
/usr/src/sys/kern/kern_mutex.c:546
546 owner = (struct thread *)(v &
MTX_FLAGMASK);
(kgdb) list
541 #if defined(SMP) && !defined
(NO_ADAPTIVE_MUTEXES)
542 /*
543 * If the current owner of the lock is
executing on another
544 * CPU, spin instead of blocking.
545 */
546
owner = (struct thread *)(v & MTX_FLAGMASK);
547 #ifdef ADAPTIVE_GIANT
548 if
(TD_IS_RUNNING(owner)) {
549 #else
550 if (m != &Giant && TD_IS_RUNNING
(owner)) {
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