[Bug 272416] Seldom crash happening with RTL8125

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272416

--- Comment #6 from Jonathan Vasquez <jon@xyinn.org> ---
This is the list *[addr] and 'backtrace' from kgdb for the dump I provided
yesterday. Let me know if you need me to recompile the kernel with a debugging
configuration. Perhaps that can provide further information if the current info
isn't enough. Thank you!

(kgdb) list *0xffffffff80c686e0
0xffffffff80c686e0 is in ether_input (/usr/src/sys/net/if_ethersubr.c:849).
844              */
845             CURVNET_SET_QUIET(ifp->if_vnet);
846             if (__predict_false(needs_epoch))
847                     NET_EPOCH_ENTER(et);
848             while (m) {
849                     mn = m->m_nextpkt;
850                     m->m_nextpkt = NULL;
851     
852                     /*
853                      * We will rely on rcvif being set properly in the
deferred
(kgdb) backtrace
#0  __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57
#1  doadump (textdump=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:405
#2  0xffffffff80b42cc7 in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:526
#3  0xffffffff80b4319f in vpanic (fmt=0xffffffff81136b3b "%s",
ap=ap@entry=0xfffffe015f114b80)
    at /usr/src/sys/kern/kern_shutdown.c:970
#4  0xffffffff80b42ff3 in panic (fmt=<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:894
#5  0xffffffff8100c85c in trap_fatal (frame=0xfffffe015f114c70, eva=65543) at
/usr/src/sys/amd64/amd64/trap.c:952
#6  0xffffffff8100c8af in trap_pfault (frame=0xfffffe015f114c70,
usermode=false, signo=<optimized out>,
    ucode=<optimized out>) at /usr/src/sys/amd64/amd64/trap.c:760
#7  <signal handler called>
#8  ether_input (ifp=<optimized out>, m=0xffff) at
/usr/src/sys/net/if_ethersubr.c:849
#9  0xffffffff8253edd0 in re_rxeof () from /boot/modules/if_re.ko
#10 0xffffffff8252f87a in re_int_task_8125 () from /boot/modules/if_re.ko
#11 0xffffffff80ba5922 in taskqueue_run_locked (queue=0xfffffe006ba84168,
queue@entry=0xfffff800025df700)
    at /usr/src/sys/kern/subr_taskqueue.c:512
#12 0xffffffff80ba6bb2 in taskqueue_thread_loop
(arg=arg@entry=0xfffffe006ba84238)
    at /usr/src/sys/kern/subr_taskqueue.c:824
#13 0xffffffff80afdb0f in fork_exit (callout=0xffffffff80ba6af0
<taskqueue_thread_loop>, arg=0xfffffe006ba84238,
    frame=0xfffffe015f114f40) at /usr/src/sys/kern/kern_fork.c:1160
#14 <signal handler called>
#15 0x3b1daa5d375daa59 in ?? ()
Backtrace stopped: Cannot access memory at address 0x9c2a3111906a3115

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