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Date:      Wed, 21 Apr 2021 09:44:30 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 255104] FreeBSD 13.0-RELEASE panic/crash with ipfw/dummynet/divert & wlan
Message-ID:  <bug-255104-227-FP0owiT92a@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-255104-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-255104-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D255104

Michael Meiszl <michael@meiszl.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |michael@meiszl.de

--- Comment #2 from Michael Meiszl <michael@meiszl.de> ---
(In reply to Joshua Kinard from comment #1)
I just reported an error that seems to be alike to yours.
Here its more than just a router, so its harder to locate. But basically I =
have
also tracked it down to ipfw panicing on incoming packets.

Fatal trap 12: page fault while in kernel mode
cpuid =3D 4; apic id =3D 04
fault virtual address   =3D 0x388
fault code              =3D supervisor read data, page not present
instruction pointer     =3D 0x20:0xffffffff80d3fa67
stack pointer           =3D 0x28:0xfffffe00df2feac0
frame pointer           =3D 0x28:0xfffffe00df2feb20
code segment            =3D base 0x0, limit 0xfffff, type 0x1b
                        =3D DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        =3D interrupt enabled, resume, IOPL =3D 0
current process         =3D 12 (swi1: netisr 0)
trap number             =3D 12
panic: page fault
cpuid =3D 4
time =3D 1618988377
KDB: stack backtrace:
#0 0xffffffff80c57345 at kdb_backtrace+0x65
#1 0xffffffff80c09d21 at vpanic+0x181
#2 0xffffffff80c09b93 at panic+0x43
#3 0xffffffff8108b187 at trap_fatal+0x387
#4 0xffffffff8108b1df at trap_pfault+0x4f
#5 0xffffffff8108a83d at trap+0x27d
#6 0xffffffff810617a8 at calltrap+0x8
#7 0xffffffff80bcae5d at ithread_loop+0x24d
#8 0xffffffff80bc7c5e at fork_exit+0x7e
#9 0xffffffff8106282e at fork_trampoline+0xe
Uptime: 2m6s

Runtime is random (seems to depend on how much traffic is incoming and since
this is a central router and tunnel endpoint, it does not take long to cras=
h)

The system stays alive with ipfw disabled, but of course, this is no valid
option for this machine

(at least we are TWO now with this problem....)

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