https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246819
Bug ID: 246819
Summary: Kernel panic with ifconfig destroy
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: lrx...@gmail.com
$ uname -a
FreeBSD somebox 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r361562M: Wed May 27
19:54:22 EDT 2020 user@somebox:/usr/obj/usr/src2/amd64.amd64/sys/MYKERN
amd64
Steps to reproduce:
# Create a wlan interface with ifconfig:
ifconfig wlan7 create wlandev run0
ifconfig wlan7 inet6 ifdisabled
ifconfig wlan7 mode 11ng channel 9 -ampdutx -ampdurx
ifconfig wlan7 inet6 -ifdisabled
ifconfig wlan7 inet6 accept_rtadv
ifconfig wlan7 inet6 accept_rtadv up
# Do some activity on the network (open a website?)
# destroy the wlan interface
ifconfig wlan7 destroy
# kernal panics!
Unread portion of the kernel message buffer from crash report:
__curthread () at /usr/src2/sys/amd64/include/pcpu_aux.h:55
55 /usr/src2/sys/amd64/include/pcpu_aux.h: No such file or directory.
(kgdb) #0 __curthread () at /usr/src2/sys/amd64/include/pcpu_aux.h:55
#1 doadump (textdump=1) at /usr/src2/sys/kern/kern_shutdown.c:394
#2 0xffffffff80ac1670 in kern_reboot (howto=260)
at /usr/src2/sys/kern/kern_shutdown.c:481
#3 0xffffffff80ac1aca in vpanic (fmt=<optimized out>, ap=<optimized out>)
at /usr/src2/sys/kern/kern_shutdown.c:913
#4 0xffffffff80ac1823 in panic (fmt=<unavailable>)
at /usr/src2/sys/kern/kern_shutdown.c:839
#5 0xffffffff80f29a67 in trap_fatal (frame=0xfffffe001d742400, eva=0)
at /usr/src2/sys/amd64/amd64/trap.c:919
#6 0xffffffff80f29b09 in trap_pfault (frame=0xfffffe001d742400,
usermode=<optimized out>, signo=<optimized out>, ucode=<optimized out>)
at /usr/src2/sys/amd64/amd64/trap.c:736
#7 0xffffffff80f29105 in trap (frame=0xfffffe001d742400)
at /usr/src2/sys/amd64/amd64/trap.c:400
#8 <signal handler called>
#9 0xffffffff80ce307d in ip6_output (m0=<optimized out>,
opt=<optimized out>, ro=<optimized out>, flags=0, im6o=0x0, ifpp=0x0,
inp=0xfffff801ea6b8b70) at /usr/src2/sys/netinet6/ip6_output.c:790
#10 0xffffffff80ca829c in tcp_output (tp=0xfffffe00b1dd2850)
at /usr/src2/sys/netinet/tcp_output.c:1420
#11 0xffffffff80cae5f1 in tcp_drop (tp=0xfffffe00b1dd2850, errno=60)
at /usr/src2/sys/netinet/tcp_subr.c:1882
#12 0xffffffff80cb6bf6 in tcp_timer_keep (xtp=0xfffffe00b1dd2850)
at /usr/src2/sys/netinet/tcp_timer.c:506
#13 0xffffffff80add28f in softclock_call_cc (c=0xfffffe00b1dd2b48,
cc=0xffffffff81a97a40 <cc_cpu>, direct=0)
at /usr/src2/sys/kern/kern_timeout.c:703
#14 0xffffffff80add64b in softclock (arg=0xffffffff81a97a40 <cc_cpu>)
at /usr/src2/sys/kern/kern_timeout.c:823
#15 0xffffffff80a81ff9 in intr_event_execute_handlers (p=<optimized out>,
ie=0xfffff800037a4e00) at /usr/src2/sys/kern/kern_intr.c:1153
#16 ithread_execute_handlers (p=<optimized out>, ie=0xfffff800037a4e00)
at /usr/src2/sys/kern/kern_intr.c:1166
#17 ithread_loop (arg=<optimized out>) at /usr/src2/sys/kern/kern_intr.c:1254
#18 0xffffffff80a7eb40 in fork_exit (
callout=0xffffffff80a81d80 <ithread_loop>, arg=0xfffff80003775280,
frame=0xfffffe001d742b00) at /usr/src2/sys/kern/kern_fork.c:1053
#19 <signal handler called>
(kgdb)
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