Warning: Permanently added '10.128.0.237' (ECDSA) to the list of known hosts.
2021/05/26 11:33:22 parsed 1 programs
2021/05/26 11:33:22 executed programs: 0
lock order reversal:
 1st 0xfffffe0094ffac70 sctp-tcb (tcb, sleep mutex) @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:1473
 2nd 0xfffffe00041aef48 sctp-info (sctp-info, rw) @ /syzkaller/managers/main/kernel/sys/netinet/sctp_pcb.c:4838
lock order tcb -> sctp-info attempted at:
#0 0xffffffff81168a65 at witness_checkorder+0x12c5
#1 0xffffffff810b3179 at _rw_wlock_cookie+0xb9
#2 0xffffffff82e29f3c at sctp_free_assoc+0x75c
#3 0xffffffff82e32023 at sctp_load_addresses_from_init+0x1253
#4 0xffffffff82df6a9f at sctp_process_control+0x9aaf
#5 0xffffffff82dec410 at sctp_common_input_processing+0x7d0
#6 0xffffffff82df7a0a at sctp_input_with_port+0x30a
#7 0xffffffff82df7a6f at sctp_input+0x1f
#8 0xffffffff8137b9db at ip_input+0x38b
#9 0xffffffff812b142d at swi_net+0x20d
#10 0xffffffff81055d9f at ithread_loop+0x33f
#11 0xffffffff81051073 at fork_exit+0xb3
#12 0xffffffff817d0a2e at fork_trampoline+0xe
2021/05/26 11:34:23 executed programs: 8
2021/05/26 11:34:34 executor failed 11 times: executor 0: EOF
ifconfig: interface /dev/tap0 does not exist
SYZFAIL: tun: can't open device
device=/dev/tap0 (errno 16: Device busy)