Date: Sat, 11 Jul 2009 19:44:29 +0100 From: Lawrence Stewart <lstewart@freebsd.org> To: Stefan Bethke <stb@lassitu.de> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: ppp triggers GPF panic Message-ID: <4A58DD8D.3090308@freebsd.org> In-Reply-To: <128E7C52-CCBD-4BAF-A4AE-1D914A3968CB@lassitu.de> References: <128E7C52-CCBD-4BAF-A4AE-1D914A3968CB@lassitu.de>
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Stefan Bethke wrote: > Yesterday's -current, amd64, C2D, 4 GB RAM. Full dmesg below. > > > Fatal trap 9: general protection fault while in kernel mode > cpuid = 0; apic id = 00 > instruction pointer = 0x20:0xffffffff802fc2ce > stack pointer = 0x28:0xffffff8000037b10 > frame pointer = 0x28:0xffffff8000037b30 > 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 = 12 (swi1: netisr 0) > [thread pid 12 tid 100007 ] > Stopped at _mtx_lock_sleep+0x4e: movl 0x288(%rcx),%esi > > Didn't capture anything else there. This happened when my ADSL link was > forced down (24h connection reset). > > After fixing the file system (UFS2 + softupdates on /), I got another > "panic: spin lock held too long" on rebooting. > > Then, the GPF panic happened again as ppp was trying to establish the > connection: 1. Do you have a crash dump? 2. Can you try find a sequence of events to deterministically reproduce this? Cheers, Lawrence
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