Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts.
2019/12/29 17:27:32 parsed 1 programs
2019/12/29 17:27:38 executed programs: 0
2019/12/29 17:27:43 executed programs: 215
login: panic: attempt to execute user address 0x0 in supervisor mode

Stopped at      db_enter+0x18:  addq    $0x8,%rsp

    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND

* 78903  53434      0           0  0x4000000    0K syz-executor.1

 497310  50793      0         0x2  0x4000000    1  syz-execprog

db_enter() at db_enter+0x18

panic(ffffffff82234bff) at panic+0x15c

pageflttrap(ffff800020ba30f0,0) at pageflttrap+0x40b

kerntrap(ffff800020ba30f0) at kerntrap+0xec

alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b

0(fffffd806e8dddd0,ffff800020ba3300,ffff800020aa1650,fffffd806e8dddd0,14ccc39b3c4cf773,7) at 0

sys_kevent(ffff800020aa1650,ffff800020ba3408,ffff800020ba3450) at sys_kevent+0x2b1

syscall(ffff800020ba34d0) at syscall+0x4a4

Xsyscall() at Xsyscall+0x128

end of kernel

end trace frame: 0x41a98097c90, count: 6

https://www.openbsd.org/ddb.html describes the minimum info required in bug

reports.  Insufficient info makes it difficult to find and fix bugs.

ddb{0}> 

ddb{0}> set $lines = 0

ddb{0}> set $maxwidth = 0

ddb{0}> show panic

attempt to execute user address 0x0 in supervisor mode

ddb{0}> trace

db_enter() at db_enter+0x18

panic(ffffffff82234bff) at panic+0x15c

pageflttrap(ffff800020ba30f0,0) at pageflttrap+0x40b

kerntrap(ffff800020ba30f0) at kerntrap+0xec

alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b

0(fffffd806e8dddd0,ffff800020ba3300,ffff800020aa1650,fffffd806e8dddd0,14ccc39b3c4cf773,7) at 0

sys_kevent(ffff800020aa1650,ffff800020ba3408,ffff800020ba3450) at sys_kevent+0x2b1

syscall(ffff800020ba34d0) at syscall+0x4a4

Xsyscall() at Xsyscall+0x128

end of kernel

end trace frame: 0x41a98097c90, count: -9

ddb{0}> show registers

rdi                                0

rsi                              0x1

rbp               0xffff800020ba2f60

rbx               0xffff800020ba3010

rdx                             0x8b

rcx                              0x2

rax                              0x1

r8                0xffffffff8191fd6f    kprintf+0x16f

r9                               0x1

r10               0x6cb278c79a1c6b59

r11               0x908d8312e7c6a85f

r12                     0x3000000008

r13               0xffff800020ba2f70

r14                            0x100

r15                              0x1

rip               0xffffffff81e12998    db_enter+0x18

cs                               0x8

rflags                         0x246

rsp               0xffff800020ba2f50

ss                              0x10

db_enter+0x18:  addq    $0x8,%rsp

ddb{0}> show proc

PROC (syz-executor.1) pid=78903 stat=onproc

    flags process=0 proc=4000000<THREAD>

    pri=61, usrpri=61, nice=20

    forw=0xffffffffffffffff, list=0xffff800020aa1160,0xffffffff826177f8

    process=0xffff800020aa2aa8 user=0xffff800020b9e000, vmspace=0xfffffd807efff730

    estcpu=36, cpticks=0, pctcpu=0.0

    user=0, sys=0, intr=0

ddb{0}>