Date: Sat, 29 Sep 2012 08:40:03 -0400 From: Kim Culhan <w8hdkim@gmail.com> To: freebsd-current@FreeBSD.org Subject: panic possibly on on bridge member removal Message-ID: <CAKZxVQU0azfJShEiRgjsCu2aRqcBFi1qV7HDajFY2y=Dz084Gw@mail.gmail.com>
next in thread | raw e-mail | index | archive | help
After a few hours of operation involving tap0 added to the bridge
running openvpn
and shutting down openvpn which removes tap0 from the bridge, the
machine is found to have a panic:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address = 0x188
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff82a14f96
stack pointer = 0x28:0xffffff8000285670
frame pointer = 0x28:0xffffff80002856b0
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 (swi5: fast taskq)
[ thread pid 12 tid 100022 ]
Stopped at bridge_enqueue+0x86: calll *0x188(%r12)
db> bt
Tracing pid 12 tid 100022 td 0xfffffe0003aff000
bridge_enqueue() at bridge_enqueue+0x86
ether_output() at ether_output+0x580
ip_output() at ip_output+0xb2e
ip_forward() at ip_forward+0x1e5
ip_input() at ip_input+0x54e
netisr_dispatch_src() at netisr_dispatch_src+0x7b
ether_demux() at ether_demux+0x156
ether_nh_input() at ether_nh_input+0x31a
netisr_dispatch_src() at netisr_dispatch_src+0x7b
re_rxeof() at re_rxeof+0x515
re_int_task() at re_int_task+0x8b
taskqueue_run_locked() at taskqueue_run_locked+0xf0
taskqueue_run() at taskqueue_run+0x4a
intr_event_execute_handlers() at intr_event_execute_handlers+0xaa
ithread_loop() at ithread_loop+0xde
fork_exit() at fork_exit+0x80
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffff8000285cb0, rbp = 0 ---
Trying to get a dump results in a hang:
db> call doadump
Dumping 762 out of 4055 MB: (hang)
thanks
-kim
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAKZxVQU0azfJShEiRgjsCu2aRqcBFi1qV7HDajFY2y=Dz084Gw>