Date: Thu, 22 Mar 2001 10:49:44 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Matthew Jacob <mjacob@feral.com> Cc: current@FreeBSD.org Subject: RE: FOLLOWUP: RE: boom in a syscalll Message-ID: <XFMail.010322104944.jhb@FreeBSD.org> In-Reply-To: <Pine.LNX.4.21.0103212050150.13436-100000@zeppo.feral.com>
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On 22-Mar-01 Matthew Jacob wrote: > > Followup- updated kernel, rebuilt, and the same thing that triggered this > before (^Z in vi) happened again, but this time with a different traceback: I wish I could reproduce this. :( > Fatal trap 12: page fault while in kernel mode > cpuid = 0; lapic.id = 00000000 > fault virtual address = 0x14 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc019d9f2 > stack pointer = 0x10:0xc7fc5f30 > frame pointer = 0x10:0xc7fc5f3c > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = resume, IOPL = 0 > current process = 19 (irq2: fxp0 isp1) > kernel: type 12 trap, code=0 > > CPU0 stopping CPUs: 0x00000002... stopped. > Stopped at propagate_priority+0x6e: cmpl 0x14(%esi),%ebx Same place as last time. It looks like a mutex is either being used before it is initialized or being zero'd, or that curproc is NULL at some point. :( If a mutex is getting zero'd, then that might explain the other panics in witness_exit(). -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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