Date: Tue, 31 Jan 2006 17:07:15 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Anish Mistry <mistry.7@osu.edu> Cc: freebsd-stable@freebsd.org Subject: Re: Fatal trap 12: page fault soo_poll Message-ID: <20060131170612.N95776@fledge.watson.org> In-Reply-To: <200601301843.12108.mistry.7@osu.edu> References: <200601301843.12108.mistry.7@osu.edu>
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On Mon, 30 Jan 2006, Anish Mistry wrote: > I just got the following trap on my AMD64 system while doing some > video encoding. I'm updating to the latest STABLE to see if I can > reproduce it. > FreeBSD 6.0-STABLE #8: Thu Jan 26 19:07:13 UTC 2006 > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0xffffffcc805543e0 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xffffffff8025b244 > stack pointer = 0x10:0xffffffff962e4900 > frame pointer = 0x10:0xffffffff962e4930 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 3 > current process = 705 (Xorg) > [thread pid 705 tid 100104 ] > Stopped at soo_poll+0x44: movq 0x60(%rax),%rax > db> bt > Tracing pid 705 tid 100104 td 0xffffff0013a02260 > soo_poll() at soo_poll+0x44 > kern_select() at kern_select+0x8b7 > select() at select+0x3e > syscall() at syscall+0x471 > Xfast_syscall() at Xfast_syscall+0xa8 If you can reproduce this, stack traces extracted from a core with gdb would be very helpful. I've fixed several bugs that "look a lot like that", but think most or all of those fixes were from before 6.0, so I think those should already be in the code you're running. However, I may misremember, and there has been quite a bit of cleanup done to UNIX domain sockets and TCP since 6.0-RELEASE. Thanks, Robert N M Watson
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