uvm_fault(0xfffffb806fb7d7a8, 0x98, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dovutimens+0x368: movl 0x98(%rax),%r12d --db_more--  TID PID UID PRFLAGS PFLAGS CPU COMMAND --db_more--  109881 16485 0 0 0 0 syz-executor --db_more-- *285398 58826 0 0 0x4000000 1K syz-executor --db_more-- dovutimens(ffff800045fee548,fffffb800f78c210,ffff80002a256bf0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 --db_more-- sys_futimens(ffff800045fee548,ffff80002a256d40,ffff80002a256c90) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80002a256d40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a256d40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel --db_more-- end trace frame: 0x7a74bfc9980, count: 11 --db_more-- https://www.openbsd.org/ddb.html describes the minimum info required in bug --db_more-- reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> nes = 0 No such command ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffb806fb7d7a8, 0x98, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace dovutimens(ffff800045fee548,fffffb800f78c210,ffff80002a256bf0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800045fee548,ffff80002a256d40,ffff80002a256c90) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80002a256d40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a256d40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 --db_more-- Xsyscall() at Xsyscall+0x128 --db_more-- end of kernel --db_more-- end trace frame: 0x7a74bfc9980, count: -4 ddb{1}> w registers Symbol not found ddb{1}> show proc PROC (syz-executor) tid=285398 pid=58826 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 --db_more--  wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 --db_more--  forw=0xffffffffffffffff, list=0xffff800045fefa08,0xffff800045feed20 --db_more--  process=0xffff800045ff1820 user=0xffff80002a251000, vmspace=0xfffffb806fb7d7a8 --db_more--