uvm_fault(0xfffffd8069d50d78, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81ab3eb8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80002efbb420 gsbase 0xffff8000299bdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81ab3eb8 Starting stack trace... panic(ffffffff83487d88) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002efbb370) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002c7aad28,fffffd80650802b8,ffff80002efbb530) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimens(ffff80002c7aad28,ffff80002efbb680,ffff80002efbb5d0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847 syscall(ffff80002efbb680) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002efbb680) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xedf8f96bf80, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 185068 11027 0 0 0 0 syz-executor *466102 65414 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7da733e9e6e0, count: 14 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.