uvm_fault(0xfffff3006fbad008, 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-- *365600 35898 0 0 0x4000000 0K syz-executor --db_more-- dovutimens(ffff800045fe7cb0,fffff3006f5f5720,ffff80003c3c9ee0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 --db_more-- sys_futimens(ffff800045fe7cb0,ffff80003c3ca030,ffff80003c3c9f80) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 --db_more-- syscall(ffff80003c3ca030) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] --db_more-- syscall(ffff80003c3ca030) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf67b5f25380, 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(0xfffff3006fbad008, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace dovutimens(ffff800045fe7cb0,fffff3006f5f5720,ffff80003c3c9ee0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800045fe7cb0,ffff80003c3ca030,ffff80003c3c9f80) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c3ca030) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ca030) 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: 0xf67b5f25380, count: -4 ddb{0}> w registers Symbol not found ddb{0}> show proc PROC (syz-executor) tid=365600 pid=35898 tcnt=3 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=0xffff800045fe6028,0xffff800045fe7a28 --db_more--  process=0xffff800045fe8e88 user=0xffff80003c3c5000, vmspace=0xfffff3006fbad008 --db_more--  estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> how all locks No such command ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11149 12245K 12448K 166960K 12725 0 pcb 19 14K 15K 166960K 58 0 --db_more--  rtable 191 6K 7K 166960K 371 0 --db_more--  pf 36 18K 20K 166960K 66 0 --db_more--  ifaddr 37 6K 7K 166960K 54 0 --db_more--  ifgroup 53 2K 2K 166960K 71 0 --db_more--  sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 84 0 ioctlops 0 0K 4K 166960K 1552 0 iov 0 0K 16K 166960K 6 0 --db_more--  mount 1 1K 1K 166960K 1 0 --db_more--  log 0 0K 0K 166960K 4 0 --db_more--  vnodes 1359 85K 86K 166960K 1640 0 --db_more--  UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 --db_more--  sem 5 0K 0K 166960K 73 0 --db_more--  dirhash 12 2K 2K 166960K 12 0 --db_more--  ACPI 1734 201K 291K 166960K 11964 0 --db_more--  file desc 16 61K 240K 166960K 307 0 --db_more--  sigio 0 0K 0K 166960K 2 0 --db_more--  proc 12 17K 164K 166960K 564 0 --db_more--  subproc 72 4K 4K 166960K 72 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(ffff800045fe7cb0,fffff3006f5f5720,ffff80003c3c9ee0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800045fe7cb0,ffff80003c3ca030,ffff80003c3c9f80) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c3ca030) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ca030) 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(ffff800045fe7cb0,fffff3006f5f5720,ffff80003c3c9ee0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800045fe7cb0,ffff80003c3ca030,ffff80003c3c9f80) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c3ca030) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ca030) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 --db_more--