Re: Panic in fork()

[Kris Kennaway]

On Sat, Feb 08, 2003 at 01:24:06AM -0800, Kris Kennaway wrote:
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; lapic.id = 01000000
> fault virtual address   = 0x14
> fault code              = supervisor read, page not present
> instruction pointer     = 0x8:0xc01a1e2d
> stack pointer           = 0x10:0xe4146c74
> frame pointer           = 0x10:0xe4146cbc
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 99992 (sh)
> kernel: type 12 trap, code=0
> Stopped at      fork1+0x3fd:    cmpl    %ebx,0x14(%eax)
> db> trace
> fork1(c6ee5000,14,0,e4146cd4,c6c04788) at fork1+0x3fd
> fork(c6ee5000,e4146d10,c03445dc,407,0) at fork+0x52
> syscall(2f,2f,2f,80f9cb4,80fe000) at syscall+0x28e
> Xint0x80_syscall() at Xint0x80_syscall+0x1d
> --- syscall (2, FreeBSD ELF32, fork), eip = 0x807bd63, esp = 0xbfbff69c, ebp = 
>0xbfbff6c8 ---
> db>

bento# addr2line -e kernel.debug 0xc01a1e2d
../../../kern/kern_fork.c:388

                for (; p2 != NULL; p2 = LIST_NEXT(p2, p_list)) {
                        PROC_LOCK(p2);
388 -->                 while (p2->p_pid == trypid || 

Kris

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