SYZFAIL: child stopped status=127 (errno 9: Bad file descriptor) FreeBSD/amd64 (ci-freebsd-main-0.us-central1-b.c.syzkaller.internal) (ttyu0) login: if_delmulti_locked: detaching ifnet instance 0xfffffe0058538000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058538000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058538000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b800 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b800 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b800 pid 1064 (syz-executor), tap1: tun/tap protocol violation, non-controlling process closed last. ifaddr cache = 0xfffffe0059b80180 is deleted if_delmulti_locked: detaching ifnet instance 0xfffffe005814c000 tap1: link state changed to DOWN if_delmulti_locked: detaching ifnet instance 0xfffffe005814c000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814c000 pid 1065 (syz-executor), tap4: tun/tap protocol violation, non-controlling process closed last. if_delmulti_locked: detaching ifnet instance 0xfffffe0058538000 ifaddr cache = 0xfffffe006e528c00 is deleted if_delmulti_locked: detaching ifnet instance 0xfffffe0058538000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058538000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537800 tap4: link state changed to DOWN if_delmulti_locked: detaching ifnet instance 0xfffffe0058537800 pid 1057 (syz-executor), tap5: tun/tap protocol violation, non-controlling process closed last. if_delmulti_locked: detaching ifnet instance 0xfffffe0058537800 ifaddr cache = 0xfffffe0077abe780 is deleted if_delmulti_locked: detaching ifnet instance 0xfffffe0058537000 tap5: link state changed to DOWN if_delmulti_locked: detaching ifnet instance 0xfffffe0058537000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537000 ktrace write failed, errno 27, tracing stopped for pid 1 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b800 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b800 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b800 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814b000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814c000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814c000 if_delmulti_locked: detaching ifnet instance 0xfffffe005814c000 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537800 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537800 if_delmulti_locked: detaching ifnet instance 0xfffffe0058537800