Autoloading module: intpm.ko
Starting background file system checks in 60 seconds.

Wed Aug  7 04:10

FreeBSD/amd64 (ci-freebsd-i386-1.c.syzkaller.internal) (ttyu0)



login: Expensive timeout(9) function: 0xffffffff8112f8f0(0) 0.003187556 s
Warning: Permanently added '10.128.1.32' (ECDSA) to the list of known hosts.
2019/08/07 04:22:53 parsed 1 programs
2019/08/07 04:22:53 executed programs: 0
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
2019/08/07 04:22:58 executed programs: 338
2019/08/07 04:23:03 executed programs: 726
interface if_tuntap.1 already present in the KLD 'kernel'!
linker_load_file: /boot/kernel/if_tap.ko - unsupported file type
2019/08/07 04:23:08 executed programs: 1138
2019/08/07 04:23:14 executed programs: 1550
panic: mtx_lock() of spin mutex (null) @ /syzkaller/managers/i386/kernel/sys/netinet/tcp_output.c:337
cpuid = 1
time = 1565151794
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe001f912520
vpanic() at vpanic+0x1e0/frame 0xfffffe001f912580
panic() at panic+0x43/frame 0xfffffe001f9125e0
__mtx_lock_flags() at __mtx_lock_flags+0x1fd/frame 0xfffffe001f912640
tcp_output() at tcp_output+0x611/frame 0xfffffe001f912800
tcp6_usr_connect() at tcp6_usr_connect+0x3b6/frame 0xfffffe001f912870
soconnectat() at soconnectat+0x183/frame 0xfffffe001f9128d0
kern_connectat() at kern_connectat+0x209/frame 0xfffffe001f912930
sys_connect() at sys_connect+0xd9/frame 0xfffffe001f912970
ia32_syscall() at ia32_syscall+0x46c/frame 0xfffffe001f912ab0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x81425ad
KDB: enter: panic
[ thread pid 2555 tid 101029 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why