Date: Fri, 15 Sep 2006 14:40:23 GMT From: Gleb Smirnoff <glebius@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/103256: em0: watchdog timeout -- resetting (6.1-STABLE) Message-ID: <200609151440.k8FEeNDe067217@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/103256; it has been noted by GNATS. From: Gleb Smirnoff <glebius@FreeBSD.org> To: Imri Zvik <imriz@co.zahav.net.il> Cc: freebsd-gnats-submit@FreeBSD.org Subject: Re: kern/103256: em0: watchdog timeout -- resetting (6.1-STABLE) Date: Fri, 15 Sep 2006 18:35:59 +0400 On Thu, Sep 14, 2006 at 08:46:08AM +0000, Imri Zvik wrote: I> >Environment: I> FreeBSD wintergreen 6.1-STABLE FreeBSD 6.1-STABLE #1: Wed Aug 30 09:54:35 IDT 2006 root@wintergreen:/usr/obj/usr/src/sys/IGLD i386 I> >Description: I> I've recently upgraded my 6.0-STABLE machine to 6.1-STABLE, and since the upgrade i'm getting "em0: watchdog timeout -- resetting" messages every once in a while (sometimes twice a day, sometimes every couple of days). This causes the machine to be unstable, network-wise (connections being dropped, etc.) I> I> Sep 14 06:35:41 wintergreen kernel: em0: watchdog timeout -- resetting I> Sep 14 06:35:41 wintergreen kernel: em0: link state changed to DOWN I> Sep 14 06:35:42 wintergreen kernel: em0: link state changed to UP I> I> I> i've found this discussion on freebsd-stable (http://www.mail-archive.com/freebsd-stable@freebsd.org/msg81865.html) indicating that i am not the only one suffering from this issue. As I already have mentioned many times on the mailing lists. Before revision 1.65.2.14 of if_em.c, the watchdog timeout event's was not logged at all. However, there is definitely a regression in RELENG_6 that leads to fake(?) watchdog timeouts on some systems. Unfortunately, I haven't yet reproduced it on my systems. Some people report that this is SMP issue, setting debug.mpsafenet=0 plumbs the problem. Not sure whether you have the regression, or you are seeing the watchdog events, that were not logged before. -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200609151440.k8FEeNDe067217>