Re: CURRENT [r308668] autofs kernel panic

From: Edward Tomasz Napierała <trasz_at_FreeBSD.org>
Date: Mon, 23 Jan 2017 11:51:10 +0000
For the record, this was fixed in r311284.

On 1115T2021, Alex Deiter wrote:
> Hello Edward,
> 
> Thank you for the quick reply!
> I was able to reproduce this panic on default GENERIC kernel (my test
> system and laptop):
> 
> # kgdb /boot/kernel/kernel /var/crash/vmcore.2
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "amd64-marcel-freebsd"...
> 
> Unread portion of the kernel message buffer:
> kernel trap 12 with interrupts disabled
> 
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 3; apic id = 06
> fault virtual address = 0xe0
> fault code = supervisor read data, page not present
> instruction pointer = 0x20:0xffffffff809fe487
> stack pointer        = 0x28:0xfffffe085f5d4560
> frame pointer        = 0x28:0xfffffe085f5d45b0
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags = resume, IOPL = 0
> current process = 0 (pkg)

[..]
Received on Mon Jan 23 2017 - 10:51:16 UTC

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