Warning: Permanently added '10.128.1.27' (ECDSA) to the list of known hosts.
2019/05/11 00:11:01 parsed 1 programs
2019/05/11 00:11:01 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
Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex sctp-tcb (tcb) r = 0 (0xfffff80012c6c928) locked @ /syzkaller/managers/main/kernel/sys/netinet/sctp_output.c:13021
stack backtrace:
#0 0xffffffff8110eb9e at witness_debugger+0x8e
#1 0xffffffff81110220 at witness_warn+0x640
#2 0xffffffff8170c6e0 at trap_pfault+0x80
#3 0xffffffff8170b64d at trap+0x44d
#4 0xffffffff816d4835 at calltrap+0x8
#5 0xffffffff8153781a at uma_zfree_arg+0x1aa
#6 0xffffffff81039f8f at m_freem+0x13f
#7 0xffffffff812db644 at ip_output+0x1eb4
#8 0xffffffff81320ece at sctp_lowlevel_chunk_output+0xfbe
#9 0xffffffff81333120 at sctp_send_abort_tcb+0x360
#10 0xffffffff81380218 at sctp_abort_an_association+0x38
#11 0xffffffff8133ae82 at sctp_lower_sosend+0x2b12
#12 0xffffffff81331e60 at sctp_sosend+0x510
#13 0xffffffff811596f6 at sosend+0xc6
#14 0xffffffff81122af1 at soo_write+0x61
#15 0xffffffff811158bd at dofilewrite+0xpanic: Memory modified after free 0xfffff80004993900(256) val=0 @ 0xfffff80004993900

cpuid = 0
time = 1557533462
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0021294690
vpanic() at vpanic+0x1e0/frame 0xfffffe00212946f0
panic() at panic+0x43/frame 0xfffffe0021294750
trash_ctor() at trash_ctor+0xaa/frame 0xfffffe0021294790
mb_ctor_mbuf() at mb_ctor_mbuf+0x30/frame 0xfffffe00212947d0
uma_zalloc_arg() at uma_zalloc_arg+0x1036/frame 0xfffffe0021294880
m_getm2() at m_getm2+0x213/frame 0xfffffe00212948f0
sctp_get_mbuf_for_msg() at sctp_get_mbuf_for_msg+0x4a/frame 0xfffffe0021294930
sctp_lowlevel_chunk_output() at sctp_lowlevel_chunk_output+0x164/frame 0xfffffe0021294a80
sctp_med_chunk_output() at sctp_med_chunk_output+0x45ca/frame 0xfffffe0021295470
sctp_lower_sosend() at sctp_lower_sosend+0x4465/frame 0xfffffe0021295670
sctp_sosend() at sctp_sosend+0x510/frame 0xfffffe00212957a0
sosend() at sosend+0xc6/frame 0xfffffe0021295810
kern_sendit() at kern_sendit+0x35e/frame 0xfffffe00212958c0
sendit() at sendit+0x226/frame 0xfffffe0021295920
sys_sendmsg() at sys_sendmsg+0x8b/frame 0xfffffe0021295980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe0021295ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0021295ab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x41309a, rsp = 0x7fffdffdcf38, rbp = 0x3 ---
KDB: enter: panic
[ thread pid 814 tid 100123 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why
db>