Date: Sat, 8 Feb 2003 03:05:12 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Kris Kennaway <kris@obsecurity.org> Cc: current@FreeBSD.ORG Subject: Re: Panic in fork() Message-ID: <20030208110512.GB12696@rot13.obsecurity.org> In-Reply-To: <20030208092406.GA12104@rot13.obsecurity.org> References: <20030208092406.GA12104@rot13.obsecurity.org>
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On Sat, Feb 08, 2003 at 01:24:06AM -0800, Kris Kennaway wrote:
> Fatal trap 12: page fault while in kernel mode
> cpuid =3D 0; lapic.id =3D 01000000
> fault virtual address =3D 0x14
> fault code =3D supervisor read, page not present
> instruction pointer =3D 0x8:0xc01a1e2d
> stack pointer =3D 0x10:0xe4146c74
> frame pointer =3D 0x10:0xe4146cbc
> code segment =3D base 0x0, limit 0xfffff, type 0x1b
> =3D DPL 0, pres 1, def32 1, gran 1
> processor eflags =3D interrupt enabled, resume, IOPL =3D 0
> current process =3D 99992 (sh)
> kernel: type 12 trap, code=3D0
> 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 =3D 0x807bd63, esp =3D 0xbfbff6=
9c, ebp =3D 0xbfbff6c8 ---
> db>
bento# addr2line -e kernel.debug 0xc01a1e2d
=2E./../../kern/kern_fork.c:388
for (; p2 !=3D NULL; p2 =3D LIST_NEXT(p2, p_list)) {
PROC_LOCK(p2);
388 --> while (p2->p_pid =3D=3D trypid ||=20
Kris
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