Re: [PATCH 0/2] i386: Fix two more NMI watchdog bugs

[Udo A. Steinberg]

--Sig_K6AXE6qT0I4zeHu2aqDpQ12
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

On Fri, 8 Jun 2007 22:43:25 +0200 Ingo Molnar (IM) wrote:

IM>=20
IM> * Bj?rn Steinbrink <B.Steinbrink@xxxxxx> wrote:
IM>=20
IM> > Anyway, both are bugs and should be fixed. Maybe we're even lucky and=
=20
IM> > it fixes your hang. *fingers crossed*
IM>=20
IM> just to make it clear: the NMI watchdog was working perfectly fine on=20
IM> that box (in v2.6.21 and in dozens of kernel releases before that, for=
=20
IM> multiple years) before Andi's cleanup patch. So lets find that bug firs=
t=20
IM> or revert the cleanups.
IM>=20
IM> 	Ingo

None of the patches posted by Bj=F6rn fix the kernel BUG at
arch/i386/kernel/cpu/perfctr-watchdog.c:126! that occurs when doing
echo 0 > /proc/sys/kernel/nmi_watchdog

Call Trace:
 [<c010c429>] single_msr_unreserve+0xd/0x1a
 [<c010c668>] disable_lapic_nmi_watchdog+0x27/0x35
 [<c0110ac6>] proc_nmi_enabled+0xa0/0xbd
 [<c018550c>] proc_sys_write+0x6f/0x8c
 [<c018549d>] proc_sys_write+0x0/0x8c
 [<c0156e5b>] vfs_write+0x8a/0x10c
 [<c0157317>] sys_write+0x41/0x67
 [<c0103c30>] syscall_call+0x7/0xb

Andi, did you have a patch for that?

Cheers,

	- Udo

--Sig_K6AXE6qT0I4zeHu2aqDpQ12
Content-Type: application/pgp-signature; name=signature.asc
Content-Disposition: attachment; filename=signature.asc

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)

iD8DBQFGacDHnhRzXSM7nSkRAjCXAJ95ftq8ywP7BqdkUWn2xASGki8WrACbBfXR
HkbP3OBLtDDEYa6NJZoU9XM=
=nrp2
-----END PGP SIGNATURE-----

--Sig_K6AXE6qT0I4zeHu2aqDpQ12--
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/