ppp triggers GPF panic
lstewart at freebsd.org
Sat Jul 11 18:45:16 UTC 2009
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
1. Do you have a crash dump?
2. Can you try find a sequence of events to deterministically reproduce
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