Date: Sun, 04 Oct 1998 13:45:50 -0700 From: David Greenman <dg@root.com> To: "Morgan Davis" <mdavis@cts.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: KERNEL PANICS in 2.2.7-RELEASE server Message-ID: <199810042045.NAA00224@implode.root.com> In-Reply-To: Your message of "Thu, 01 Oct 1998 15:24:43 PDT." <003b01bded8a$499df3c0$b617a3cd@ctsd2.cts.com>
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>The machine is a Pentium II 266MHz with 256MB RAM, and pumps out 2.5 MB/s >(that's mega_bytes_) via an Intel EtherExpress in 100BaseT mode. This >server was just upgraded from 2.2.6-RELEASE to 2.2.7-RELEASE (including a >newly built kernel based chiefly on GENERIC), and ever since it exhibits >these intermittent panics: > >Fatal trap 12: page fault while in kernel mode >fault virtual address = 0x18 >fault code = supervisor write, page not present >instruction pointer = 0x8:0xf011e3d1 >stack pointer = 0x10:0xefbffe9c >frame pointer = 0x10:0xefbffec0 >code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 >processor eflags = interrupt enabled, resume , IOPL = 0 >current process = 501 (pnserver) >interrupt mask = >panic: page fault > >The panics seem to occur during periods of high activity after running for a >couple of hours. Otherwise, it appears to operate fine. Prior to the Intel >card, it was running an SMC Rev C (de driver) card that was even more >sensitive and paniced frequently. I'm considering reverting back to 2.2.6 >unless there is a known issue with 2.2.7-RELEASE that has been resolved >in -stable. Or maybe there is no some new kernel tweaks required in 2.2.7 >to avoid this? > >Any assistance is much appreciated. It would help a bunch if you could tell us what functions are around the instruction pointer above (f011e3d1)...use nm /kernel | sort | more. It kind of looks like you might be running out of mbuf clusters. You might try increasing them and see if it helps. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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