Date: Thu, 08 Nov 2012 13:29:01 -0500 From: John Baldwin <jhb@FreeBSD.org> To: =?ISO-8859-1?Q?Tommy_Sonne_Alstr=F8m?= <tommy@anakin.ws> Cc: freebsd-amd64@FreeBSD.org Subject: Re: amd64/173235: Have received two crashes within 1 day after installing new packages: Fatal trap 12: page fault in kernel mode Message-ID: <509BF9ED.90205@FreeBSD.org> In-Reply-To: <201210311250.q9VCo1Wx025049@freefall.freebsd.org> References: <201210311250.q9VCo1Wx025049@freefall.freebsd.org>
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On 10/31/12 8:50 AM, Tommy Sonne Alstrøm wrote: > The following reply was made to PR amd64/173235; it has been noted by GNATS. > > From: =?ISO-8859-1?Q?Tommy_Sonne_Alstr=F8m?= <tommy@anakin.ws> > To: Andriy Gapon <avg@FreeBSD.org> > Cc: bug-followup@FreeBSD.org > Subject: Re: amd64/173235: Have received two crashes within 1 day after installing > new packages: Fatal trap 12: page fault in kernel mode > Date: Wed, 31 Oct 2012 13:44:01 +0100 > > I'm very sorry, I just realized that I copied the 1st readout twice. The > 2nd readout was like this > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; apic id = 00 > fault virtual address = 0x6 > fault code = supervisor read data, page not present > instruction pointer = 0x20:0xffffffff809da0cc > stack pointer = 0x28:0xffffff8451f549b0 > frame pointer = 0x28:0xffffff8451f54a40 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 1068 (named) > trap number = 12 > panic: page fault > cpuid = 0 > KDB: stack backtrace: > #0 0xffffffff808680fe at kdb_backtrace+0x5e > #1 0xffffffff80832cb7 at panic+0x187 > #2 0xffffffff80b185a0 at trap_fatal+0x290 > #3 0xffffffff80b188e9 at trap_pfault+0x1f9 > #4 0xffffffff80b18daf at trap+0x3df > #5 0xffffffff80b0324f at calltrap+0x8 > #6 0xffffffff809f75a7 at udp6_bind+0xa7 > #7 0xffffffff808a152e at kern_bind+0xde > #8 0xffffffff808a15a1 at sys_bind+0x41 > #9 0xffffffff80b17e90 at amd64_syscall+0x4e0 > #10 0xffffffff80b03537 at Xfast_syscall+0xf7 > Uptime: 9h41m13s > Dumping 3411 out of 16088 > MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91% Both of your panics involve faults where the bad pointer only has a single bit set. They are also in very different places. I suspect you are having a hardware failure (e.g. single-bit memory errors). -- John Baldwin
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