Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts.
2019/01/28 19:45:36 parsed 1 programs
2019/01/28 19:45:41 executed programs: 0
2019/01/28 19:45:46 executed programs: 95
witness: userret: returning with the following locks held:

exclusive rrwlock inode r = 0 (0xfffffd807aafe4e8) locked @ /syzkaller/managers/setuid/kernel/sys/ufs/ufs/ufs_vnops.c:1547

panic: witness_warn

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

    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND

*  6943  48503  32767      0x1010  0x4080000    1  syz-executor0

db_enter() at db_enter+0x18

panic() at panic+0x16c

witness_warn(b08633fb97c7142b,0,ffff800020b92bd0) at witness_warn+0x700

userret(66bf01255f9546af) at userret+0x361

syscall(36f531b916307af0) at syscall+0x680

Xsyscall(6,0,ffffffffffffffb9,0,3,a8036c89010) at Xsyscall+0x128

end of kernel

end trace frame: 0xa82d3dedcb0, count: 9

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{1}> 

ddb{1}> set $lines = 0

ddb{1}> show panic

witness_warn

ddb{1}> trace

db_enter() at db_enter+0x18

panic() at panic+0x16c

witness_warn(b08633fb97c7142b,0,ffff800020b92bd0) at witness_warn+0x700

userret(66bf01255f9546af) at userret+0x361

syscall(36f531b916307af0) at syscall+0x680

Xsyscall(6,0,ffffffffffffffb9,0,3,a8036c89010) at Xsyscall+0x128

end of kernel

end trace frame: 0xa82d3dedcb0, count: -6

ddb{1}>