uvm_fault(0xfffffc806cdf49a8, 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-- *236521 23863 0 0 0x4000000 0K syz-executor --db_more-- dovutimens(ffff800039fb9248,fffffc807e95b878,ffff80002a2643b0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 --db_more-- sys_futimens(ffff800039fb9248,ffff80002a264500,ffff80002a264450) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 --db_more-- syscall(ffff80002a264500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] --db_more-- syscall(ffff80002a264500) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x788153e6790, 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{0}> ines = 0 No such command ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffc806cdf49a8, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace dovutimens(ffff800039fb9248,fffffc807e95b878,ffff80002a2643b0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800039fb9248,ffff80002a264500,ffff80002a264450) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80002a264500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a264500) 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: 0x788153e6790, count: -4 ddb{0}> w registers Symbol not found ddb{0}> show proc PROC (syz-executor) tid=236521 pid=23863 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 --db_more--  wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 --db_more--  forw=0xffffffffffffffff, list=0xffff800039fb9778,0xffffffff83b2af80 --db_more--  process=0xffff80003c407518 user=0xffff80002a25f000, vmspace=0xfffffc806cdf49a8 --db_more--  estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> how all locks No such command ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11069 12137K 12676K 166960K 13354 0 pcb 18 16K 18K 166960K 293 0 --db_more--  rtable 215 15K 17K 166960K 491 0 --db_more--  pf 39 18K 26K 166960K 165 0 --db_more--  ifaddr 40 6K 8K 166960K 67 0 --db_more--  ifgroup 59 2K 2K 166960K 102 0 --db_more--  sysctl 4 1K 9K 166960K 9 0 counters 72 37K 37K 166960K 100 0 ioctlops 0 0K 4K 166960K 1740 0 iov 0 0K 16K 166960K 22 0 --db_more--  mount 1 1K 1K 166960K 1 0 --db_more--  log 0 0K 0K 166960K 4 0 --db_more--  vnodes 1363 86K 86K 166960K 2105 0 --db_more--  UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 --db_more--  sem 12 0K 1K 166960K 89 0 --db_more--  dirhash 12 2K 2K 166960K 18 0 --db_more--  ACPI 1734 201K 291K 166960K 11964 0 --db_more--  file desc 18 69K 240K 166960K 665 0 --db_more--  sigio 0 0K 0K 166960K 8 0 --db_more--  proc 21 33K 164K 166960K 626 0 --db_more--  subproc 72 4K 4K 166960K 81 0 --db_more--  NFS srvsock 1 0K 0K 166960K 1 0 --db_more-- ddb{0}> hine ddbcpu 0 No such command ddb{0}> trace dovutimens(ffff800039fb9248,fffffc807e95b878,ffff80002a2643b0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800039fb9248,ffff80002a264500,ffff80002a264450) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80002a264500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a264500) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 --db_more-- Xsyscall() at Xsyscall+0x128 --db_more-- end of kernel --db_more-- ddb{0}> hine ddbcpu 1 No such command ddb{0}> trace dovutimens(ffff800039fb9248,fffffc807e95b878,ffff80002a2643b0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800039fb9248,ffff80002a264500,ffff80002a264450) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80002a264500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a264500) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 --db_more--