SYZFAIL: SIGILL
Warning! syz-executor[907] uses SF_SYNC sendfile(2) flag. Please follow up to https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287348. if_delmulti_locked: detaching ifnet instance 0xfffffe0054218000
if_delmulti_locked: detaching ifnet instance 0xfffffe0054218000
if_delmulti_locked: detaching ifnet instance 0xfffffe0054218000
pc-offset:0xffffffff217d34d1 pc:0xdeadbeef addr:0x0 code=65537 (errno 9: Bad file descriptor)
if_delmulti_locked: detaching ifnet instance 0xfffffe0054215800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054215800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054215800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054215800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054215800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054215800

FreeBSD/amd64 (ci-freebsd-main-5.us-central1-b.c.syzkaller.internal) (ttyu0)

login: if_delmulti_locked: detaching ifnet instance 0xfffffe0054217800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054217800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054217800
pid 746 (getty), jid 0, uid 0: exited on signal 4 (core dumped)
pid 423 (devd), jid 0, uid 0: exited on signal 4 (core dumped)
pid 334 (dhclient), jid 0, uid 0: exited on signal 4 (core dumped)
pid 751 (getty), jid 0, uid 0: exited on signal 4 (core dumped)
pid 925 (sh), jid 0, uid 0: exited on signal 4 (core dumped)
pid 748 (getty), jid 0, uid 0: exited on signal 4 (core dumped)
set $lines = 0
Password:pid 747 (getty), jid 0, uid 0: exited on signal 4 (core dumped)
pid 745 (getty), jid 0, uid 0: exited on signal 4 (core dumped)
pid 749 (getty), jid 0, uid 0: exited on signal 4 (core dumped)
pid 744 (getty), jid 0, uid 0: exited on signal 4 (core dumped)
if_delmulti_locked: detaching ifnet instance 0xfffffe006e5c2800
if_delmulti_locked: detaching ifnet instance 0xfffffe0054218000
if_delmulti_locked: detaching ifnet instance 0xfffffe0054218000
if_delmulti_locked: detaching ifnet instance 0xfffffe0054218000

Login incorrect
login: show registers
Password:
Login incorrect
login: ps
Password:
Login incorrect
login: show malloc
Password:
Login incorrect
show all tcpcbs/bl