Date: Tue, 22 Mar 2011 08:46:35 -0400 From: Gary Palmer <gpalmer@freebsd.org> To: Micka?l Can?vet <canevet@embl.fr> Cc: freebsd-bugs@freebsd.org Subject: Re: "Fatal double fault" panic Message-ID: <20110322124635.GA1618@in-addr.com> In-Reply-To: <1300791194.2566.37.camel@pc286.embl.fr> References: <1300791194.2566.37.camel@pc286.embl.fr>
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On Tue, Mar 22, 2011 at 11:53:14AM +0100, Micka?l Can?vet wrote: > Hi, > > I have a redundant NAS made of FreeBSD + HAST + ZFS and 24TB of disks. > > This morning my primary node crashed around 4:20am. > > On the console I can see: > > Fatal double fault > rip = 0xffffffff805e78b8 > rsp = 0xffffff8485d43fc0 > rbp = 0xffffff8485d44010 > cpuid = 1; apic id = 12 > panic: double fault > cpuid = 1 > KDB: stack backstrace: > #0 0xffffffff805f4e0e at kdb_backtrace+0x5e > #1 0xffffffff805c2d07 at panic+0x187 > #2 0xffffffff808ac366 at dblfault_handler+0x96 > #3 0xffffffff808950bd at Xdblfault+0xad > Uptime: 4d14h7m5s > Cannot sump, Device not defined or unavailable. > > The only thing I can see on my munin graphs is a strange IO activity > (disk and network over my HAST link) that starts at 3am every morning > and last about 1 hour and a half (and so until crash this morning). I > double checked my scheduled scripts and I do not do anything at that > time. So I suspect a system script to be responsible of this activity. > I'm not sure that this IO activity results in the crash, but that the > only track I have. 3am is when the scripts in /etc/periodic/daily fire # grep daily /etc/crontab # Perform daily/weekly/monthly maintenance. 1 3 * * * root periodic daily Regards, Gary
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