syzbot

SYZFAIL: SIGBUS
pc-offset:0xffffffff217d34d1 pc:0xdeadbeef addr:0x0 code=65537 (errno 9: Bad file descriptor)
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0800
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0000
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0800
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0800
Expensive callout(9) function: 0xffffffff81af1990(0) 0.006075802 s
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0000
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0000
Connection to 10.128.1.172 closed by remote host.
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5800
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5800
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5800
pid 924 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
pid 780 (sh), jid 0, uid 0: exited on signal 10 (core dumped)
pid 922 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
pid 770 (sh), jid 0, uid 0: exited on signal 10 (core dumped)
pid 920 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
pid 925 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
pid 735 (sh), jid 0, uid 0: exited on signal 10 (core dumped)
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0000
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0000
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5000
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5000
pid 923 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
pid 921 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
pid 926 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
pid 918 (getty), jid 0, uid 0: exited on signal 10 (core dumped)
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0800
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0800
if_delmulti_locked: detaching ifnet instance 0xfffffe00585a0800
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5800
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5800
if_delmulti_locked: detaching ifnet instance 0xfffffe00077f5800