uvm_fault(0xfffff6006cc492f8, 0xf, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *264109 36051 0 0 0x4000000 0 syz-executor ktrops(ffff80002a771778,ffffffffffffffff,0,a0c7fd9f,fffff6006a45d2d8,fffff60007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002a771778,ffffffffffffffff,0,a0c7fd9f,fffff6006a45d2d8,fffff60007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff6006a45d2d8,4,20c7fd9f,0,ffff80002a771778) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff6006a45d2d8,4,20c7fd9f,0,ffff80002a771778) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80002a771778,ffff80002f8bb370,ffff80002f8bb2c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002f8bb370) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f8bb370) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xda94507b20, count: 10 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffff6006cc492f8, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a771778,ffffffffffffffff,0,a0c7fd9f,fffff6006a45d2d8,fffff60007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002a771778,ffffffffffffffff,0,a0c7fd9f,fffff6006a45d2d8,fffff60007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff6006a45d2d8,4,20c7fd9f,0,ffff80002a771778) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff6006a45d2d8,4,20c7fd9f,0,ffff80002a771778) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80002a771778,ffff80002f8bb370,ffff80002f8bb2c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002f8bb370) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f8bb370) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xda94507b20, count: -5 ddb> show registers rdi 0xffff8000380e0000 rsi 0x4b07 __ALIGN_SIZE+0x3b07 rbp 0xffff80002f8bb090 rbx 0xfffff60007ffd6e8 rdx 0xffff8000380e0000 rcx 0x4b06 __ALIGN_SIZE+0x3b06 rax 0xffffffff82933283 ktrops+0x43 r8 0xfffff6006a45d2d8 r9 0xfffff60007ffd6e8 r10 0xf105918cbab526c3 r11 0x58f596c21d6c46d3 r12 0xffff80002a771778 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7fd9f rip 0xffffffff82933298 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002f8bb010 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=264109 pid=36051 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a770020,0xffff80002a770fc0 process=0xffff8000314c7198 user=0xffff80002f8b6000, vmspace=0xfffff6006cc492f8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 23014 15171 94012 0 2 0 syz-executor 23014 32279 94012 0 3 0x4000080 fsleep syz-executor 85404 300835 85333 0 2 0 syz-executor 85404 410225 85333 0 3 0x4000080 fsleep syz-executor 36051 396343 60303 0 2 0 syz-executor *36051 264109 60303 0 7 0x4000000 syz-executor 67839 22763 89242 0 2 0 syz-executor 67839 143450 89242 0 3 0x4000080 fsleep syz-executor 2495 442160 9291 0 2 0x10 syz-executor 2495 173630 9291 0 3 0x4000090 fsleep syz-executor 2495 123659 9291 0 3 0x4000090 fsleep syz-executor 87122 169948 64254 0 2 0 syz-executor 87122 431495 64254 0 3 0x4000080 fsleep syz-executor 87122 442403 64254 0 2 0x4000000 syz-executor 9291 378279 53606 0 3 0x82 nanoslp syz-executor 27510 368175 1 0 3 0x100083 ttyin getty 64254 502923 53606 0 3 0x82 nanoslp syz-executor 60303 468456 53606 0 3 0x82 nanoslp syz-executor 94012 345751 53606 0 3 0x82 nanoslp syz-executor 89242 214901 53606 0 3 0x82 nanoslp syz-executor 31445 500703 53606 0 2 0x2 syz-executor 85333 171718 53606 0 3 0x82 nanoslp syz-executor 18943 372936 53606 0 2 0x2 syz-executor 53606 467281 1 0 2 0x2 syz-executor 13931 487289 0 0 3 0x14200 bored smr 21168 2832 0 0 2 0x14200 zerothread 30084 86944 0 0 3 0x14200 aiodoned aiodoned 25949 140117 0 0 3 0x14200 syncer update 24114 169344 0 0 3 0x14200 cleaner cleaner 79108 125644 0 0 3 0x14200 reaper reaper 2237 286051 0 0 3 0x14200 pgdaemon pagedaemon 6341 25688 0 0 3 0x14200 bored viomb 82680 476054 0 0 3 0x40014200 acpi0 acpi0 46867 302211 0 0 3 0x14200 bored softnet0 26970 406394 0 0 3 0x14200 bored systqmp 50971 447433 0 0 3 0x14200 bored systq 36728 508758 0 0 3 0x40014200 tmoslp softclock 56159 20142 0 0 3 0x40014200 idle0 1 506201 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb>