SYZFAIL: child failed
 (errno 0: No error: 0)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: open of /dev/kcov failed
 (errno 2: No such file or directory)
SYZFAIL: repeatedly failed to execute the program
proc=0 req=134 state=1 status=67 (errno 9: Bad file descriptor)
lock order reversal: (sleepable after non-sleepable)
 1st 0xfffffe006df02e08 tun_mtx (tun_mtx, sleep mutex) @ /syzkaller/managers/i386/kernel/sys/net/if_tuntap.c:1641
 2nd 0xffffffff83cc7a40 tun_ioctl (tun_ioctl, sx) @ /syzkaller/managers/i386/kernel/sys/net/if_tuntap.c:1340
lock order tun_ioctl -> tun_mtx established at:
#0 0xffffffff81664981 at witness_checkorder+0x781
#1 0xffffffff814ea187 at __mtx_lock_flags+0x187
#2 0xffffffff8184f536 at tuninit+0x76
#3 0xffffffff8183da64 at ether_ioctl+0x1b4
#4 0xffffffff8184e2d2 at tunifioctl+0x3c2
#5 0xffffffff8198934b at in_control_ioctl+0x16db
#6 0xffffffff8182d6e1 at ifioctl+0xe51
#7 0xffffffff8167372a at kern_ioctl+0x4ca
#8 0xffffffff8167316e at sys_ioctl+0x36e
#9 0xffffffff82145702 at amd64_syscall+0x4e2
#10 0xffffffff820ea3eb at fast_syscall_common+0xf8
lock order tun_mtx -> tun_ioctl attempted at:
#0 0xffffffff81665852 at witness_checkorder+0x1652
#1 0xffffffff81553d49 at _sx_xlock+0x139
#2 0xffffffff8184df9a at tunifioctl+0x8a
#3 0xffffffff8182a36d at ifhwioctl+0x1d6d
#4 0xffffffff8184bb88 at tunioctl+0xd38
#5 0xffffffff811c5406 at devfs_ioctl+0x266
#6 0xffffffff82307b87 at VOP_IOCTL_APV+0x87
#7 0xffffffff817d0c67 at vn_ioctl+0x3c7
#8 0xffffffff811c62c9 at devfs_ioctl_f+0x69
#9 0xffffffff8167372a at kern_ioctl+0x4ca
#10 0xffffffff8167316e at sys_ioctl+0x36e
#11 0xffffffff80440dd7 at freebsd32_ioctl+0x607
#12 0xffffffff822cfab2 at ia32_sys

FreeBSD/amd64call+0x4d2
#13 0xffffffff820eac4f at int0x80_syscall_common+0x9c
 (ci-freebsd-i386-0.us-central1-b.c.syzkaller.internal) (ttyu0)

login: set $lines = 0
Password:
Login incorrect
login: if_delmulti_locked: detaching ifnet instance 0xfffffe006dde6000
show registers
Password:
Login incorrect
login: ps
Password:
Login incorrect
login: show malloc
Password:
Login incorrect
show all tcpcbs/bl