Date: Thu, 9 Jan 1997 13:31:38 -0700 (MST) From: Ade Barkah <mbarkah@hemi.com> To: freebsd-hackers@freebsd.org Subject: Help! fatal trap 12, and problem with coredump Message-ID: <199701092031.NAA04587@hemi.com>
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I'm getting these regularly now (FreeBSD 2.1.6.1): | Fatal trap 12: page fault while in kernel mode | fault virtual address = 0xb4a1956b | fault code = supervisor write, page not present | instruction pointer = 0x8:0xf014afb2 | code segment = base 0x0, limit 0xfffff, type 0x1b | = DPL 0, ... | processor eflags = interrupt enabled, resume, IOPL=0 | current process = 18896 (finger) | interrupt mask = | kernel: type 12 trap. code = 0 | stopped at _tcp_connect0x3e: mov $0xc,0xc483ffff(%ecx) nm /kernel gives f014af74 T _tcp_connect. I suspect bad RAM. Any ideas ? Would I see this if the RAM is too slow ? (They are 70ns, so they should be fine.) Now, I haven't seen any kind of coredump from this machine. Invoking panic manually from DDB gets me: | aha0: DMA beyond end of ISA: 0x10000... (I'm sure it means 16mb). I have an Adaptec 1542CF and 64mb RAM. I do have: options BOUNCE_BUFFERS in the kernel. Another machine with a 1542CF and 64mb similarly does not produce core dumps. I'd really appreciate any help or comments! Thanks, -Ade ------------------------------------------------------------------- Inet: mbarkah@hemi.com - HEMISPHERE ONLINE - <http://www.hemi.com/>; -------------------------------------------------------------------
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