Re: clang compiled kernel panic when mounting zfs root on i386
--iwX7oKFvAj2SwWc7
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
On Fri, Nov 30, 2012 at 04:42:45AM -0800, sig6247 wrote:
> On Fri, 30 Nov 2012 01:29:44 +0200, Konstantin Belousov <kostikbel@gmail.=
com> wrote:
>=20
> > Please apply the patch below and obtain the backtrace of the double fau=
lt
> > panic again. I will commit the patch later.
>=20
> Thanks for the patch.=20
>=20
> WARNING: WITNESS option enabled, expect reduced performance.
> Trying to mount root from zfs:zroot []...
>=20
> Fatal double fault:
> eip =3D 0xc0e93e07
> esp =3D 0xc86bffbc
> ebp =3D 0xc86c0032
> cpuid =3D 1; apic id =3D 01
> panic: double fault
> cpuid =3D 1
> KDB: enter: panic
> [ thread pid 1 tid 100002 ]
> Stopped at kdb_enter+0x3d: movl $0,kdb_why
> db> bt
> Tracing pid 1 tid 100002 td 0xc89efbc0
> kdb_enter(c1065960,c1065960,c10b903b,c139f438,aef01785,...) at kdb_enter+=
0x3d/frame 0xc139f3f0
> panic(c10b903b,1,1,1,c86c0032,...) at panic+0x14b/frame 0xc139f42c
> dblfault_handler() at dblfault_handler+0xab/frame 0xc139f42c
> --- trap 0x17, eip =3D 0xc0e93e07, esp =3D 0xc86bffbc, ebp =3D 0xc86c0032=
---
> __qdivrem(0,aba80000,c10d,98600000,68c119,...) at __qdivrem+0x197/frame 0=
xc86c0032
> db>=20
Hm, this is not very useful. Although the panic is again caused by the stack
overflow, most likely (please also include the output of the "show thread"
=66rom ddb), it is at different place, and probably at the leaf function.
Can you try some more times, so that we could see 'big' backtrace ?
--iwX7oKFvAj2SwWc7
Content-Type: application/pgp-signature
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (FreeBSD)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=rLF0
-----END PGP SIGNATURE-----
--iwX7oKFvAj2SwWc7--
討論串 (同標題文章)
完整討論串 (本文為第 6 之 16 篇)：