On Tuesday 27 January 2004 10:06 pm, Erik Moe wrote: > panic: page fault > panic messages: > --- > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x6c > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc0571bfd > stack pointer = 0x10:0xe3ab7c28 > frame pointer = 0x10:0xe3ab7c2c > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = resume, IOPL = 0 > current process = 699 (zcat) > trap number = 12 > panic: page fault > > #4 0xc06b5113 in trap (frame= > {tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi = -969008320, tf_esi > = -969012736, tf_ebp = -475300820, tf_isp = -475300844, tf_ebx = > -969008320, tf_edx = -969012736, tf_ecx = 0, tf_eax = 0, tf_trapno = 12, > tf_err = 0, tf_eip = -1068033027, tf_cs = 8, tf_eflags = 65538, tf_esp = > -962721112, tf_ss = -475300780}) > at /usr/src/sys/i386/i386/trap.c:250 > #5 0xc06a7de8 in calltrap () at {standard input}:94 > #6 0xc0571efc in turnstile_wait (ts=0xc63e1b40, lock=0xc69e0aa8, > owner=0x0) at /usr/src/sys/kern/subr_turnstile.c:458 There is an extra frame in here that gdb misses. > (kgdb) frame 6 > #6 0xc0571efc in turnstile_wait (ts=0xc63e1b40, lock=0xc69e0aa8, > owner=0x0) at /usr/src/sys/kern/subr_turnstile.c:458 > 458 turnstile_setowner(ts, owner); The real panic is in turnstile_setowner(). If owner is indeed NULL (gdb sometimes messes up values of local variables and arguments) then that is why it is panicing. Can you pop up to frame 7 and print out *m? -- John Baldwin <jhb_at_FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.orgReceived on Wed Jan 28 2004 - 09:37:15 UTC
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