[Bug 211689] panic with lagg failover wireless ath and iwm

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211689

Robin Randhawa <robin.randhawa at arm.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |robin.randhawa at arm.com

--- Comment #9 from Robin Randhawa <robin.randhawa at arm.com> ---
I'd like to confirm that without the patch in comment #4, my system panics
immediately on invoking:

$ system netif restart

Backtrace is similar to that reported in comment #4:

(kgdb) bt
#0  doadump (textdump=1) at pcpu.h:222
#1  0xffffffff80a30305 in kern_reboot (howto=<value optimized out>) at
/usr/src/sys/kern/kern_shutdown.c:386
#2  0xffffffff80a308e0 in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at /usr/src/sys/kern/kern_shutdown.c:779
#3  0xffffffff80a30923 in panic (fmt=<value optimized out>) at
/usr/src/sys/kern/kern_shutdown.c:710
#4  0xffffffff80ea01f2 in trap_fatal (frame=0xfffffe07c4cc5760, eva=32) at
/usr/src/sys/amd64/amd64/trap.c:801
#5  0xffffffff80ea03d8 in trap_pfault (frame=0xfffffe07c4cc5760, usermode=0) at
/usr/src/sys/amd64/amd64/trap.c:658
#6  0xffffffff80e9f9f8 in trap (frame=0xfffffe07c4cc5760) at
/usr/src/sys/amd64/amd64/trap.c:421
#7  0xffffffff80e80261 in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:236
#8  0xffffffff80c4b85b in nd6_iflladdr (arg=0x0, ifp=0xfffff8023448f000) at
/usr/src/sys/netinet6/nd6.c:208
#9  0xffffffff835fe5de in lagg_port_setlladdr (arg=<value optimized out>,
pending=<value optimized out>) at
/usr/src/sys/modules/if_lagg/../../net/if_lagg.c:719
#10 0xffffffff80a82bac in taskqueue_run_locked (queue=<value optimized out>) at
/usr/src/sys/kern/subr_taskqueue.c:454
#11 0xffffffff80a82a2a in taskqueue_run (queue=0xfffff800071b0400) at
/usr/src/sys/kern/subr_taskqueue.c:473
#12 0xffffffff809f7ae6 in intr_event_execute_handlers (p=<value optimized out>,
ie=<value optimized out>) at /usr/src/sys/kern/kern_intr.c:1262
#13 0xffffffff809f8156 in ithread_loop (arg=<value optimized out>) at
/usr/src/sys/kern/kern_intr.c:1275
#14 0xffffffff809f53e4 in fork_exit (callout=0xffffffff809f80b0 <ithread_loop>,
arg=0xfffff80007748ec0, frame=0xfffffe07c4cc59c0) at
/usr/src/sys/kern/kern_fork.c:1038
#15 0xffffffff80e8079e in fork_trampoline () at
/usr/src/sys/amd64/amd64/exception.S:611
#16 0x0000000000000000 in ?? ()
.
.
$ uname -a

FreeBSD vulcan 12.0-CURRENT FreeBSD 12.0-CURRENT #1 r312026 (fix-lagg): Fri Jan
13 12:05:45 GMT 2017     root at vulcan:/usr/obj/usr/src/sys/GENERIC  amd64

So this is current as of today.

With the patch applied the problem is gone.

May I know if and when this patch is to be submitted to current for inclusion ?

Thanks.

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