uvm_fault(0xfffff0800e117b98, 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 * 19882 34614 0 0 0x4000000 0 syz-executor ktrops(ffff8000388dd4e0,ffffffffffffffff,0,a0c7df9f,fffff08062e0abf8,fffff08007ffd340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff8000388dd4e0,ffffffffffffffff,0,a0c7df9f,fffff08062e0abf8,fffff08007ffd340) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff08062e0abf8,4,20c7df9f,0,ffff8000388dd4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff08062e0abf8,4,20c7df9f,0,ffff8000388dd4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff8000388dd4e0,ffff80003c8f1830,ffff80003c8f1780) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c8f1830) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f1830) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x62820fe0d10, 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(0xfffff0800e117b98, 0xf, 0, 1) -> e ddb> trace ktrops(ffff8000388dd4e0,ffffffffffffffff,0,a0c7df9f,fffff08062e0abf8,fffff08007ffd340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff8000388dd4e0,ffffffffffffffff,0,a0c7df9f,fffff08062e0abf8,fffff08007ffd340) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff08062e0abf8,4,20c7df9f,0,ffff8000388dd4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff08062e0abf8,4,20c7df9f,0,ffff8000388dd4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff8000388dd4e0,ffff80003c8f1830,ffff80003c8f1780) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c8f1830) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f1830) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x62820fe0d10, count: -5 ddb> show registers rdi 0xffff800035cc4000 rsi 0xf1f rbp 0xffff80003c8f1550 rbx 0xfffff08007ffd340 rdx 0xffff800035cc4000 rcx 0xf1e rax 0xffffffff81ad3c03 ktrops+0x43 r8 0xfffff08062e0abf8 r9 0xfffff08007ffd340 r10 0xdfbd8e4dc69fa1c2 r11 0x6563dfd04c87e101 r12 0xffff8000388dd4e0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff81ad3c18 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c8f14d0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=19882 pid=34614 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=0xffff8000388dcfb0,0xffff80002a778550 process=0xffff8000ffffb198 user=0xffff80003c8ec000, vmspace=0xfffff0800e117b98 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 2046 435966 27385 0 2 0xc80 syz-executor 2046 348498 27385 0 3 0x4000080 fsleep syz-executor 34614 32080 22552 0 2 0 syz-executor *34614 19882 22552 0 7 0x4000000 syz-executor 78714 275194 65133 0 2 0 syz-executor 78714 499605 65133 0 3 0x4000080 fsleep syz-executor 78714 396235 65133 0 3 0x4000080 fsleep syz-executor 62095 283644 28105 0 2 0xc80 syz-executor 62095 428274 28105 0 2 0x4000c80 syz-executor 1336 261765 39128 0 2 0 syz-executor 1336 162693 39128 0 3 0x4000080 pppxread syz-executor 1336 312794 39128 0 3 0x4000000 inode syz-executor 22760 468865 0 0 3 0x14200 acct acct 80261 51739 1 0 3 0x100083 ttyin getty 22552 427912 39657 0 3 0x82 nanoslp syz-executor 27385 90099 39657 0 2 0xc82 syz-executor 18159 491166 39657 0 3 0x82 wait syz-executor 65133 133694 39657 0 2 0xc82 syz-executor 28105 144869 39657 0 2 0xc82 syz-executor 89663 213396 39657 0 2 0x2 syz-executor 39128 347595 39657 0 3 0x82 nanoslp syz-executor 76498 172028 39657 0 2 0x2 syz-executor 39657 403944 1 0 3 0x82 kqread syz-executor 24084 343082 0 0 3 0x14200 bored smr 72700 44024 0 0 2 0x14200 zerothread 54104 335104 0 0 3 0x14200 aiodoned aiodoned 37113 282729 0 0 3 0x14200 syncer update 14591 323366 0 0 3 0x14200 cleaner cleaner 62167 76916 0 0 3 0x14200 reaper reaper 58845 30041 0 0 3 0x14200 pgdaemon pagedaemon 68544 286911 0 0 3 0x14200 bored viomb 23005 387267 0 0 3 0x40014200 acpi0 acpi0 92484 22667 0 0 3 0x14200 bored softnet0 93351 216124 0 0 3 0x14200 bored systqmp 44178 239460 0 0 3 0x14200 bored systq 94662 165518 0 0 3 0x40014200 tmoslp softclock 87780 485727 0 0 3 0x40014200 idle0 1 336758 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11055 12177K 12794K 166960K 12977 0 pcb 21 15K 16K 166960K 179 0 rtable 210 8K 9K 166960K 486 0 pf 33 13K 18K 166960K 82 0 ifaddr 35 6K 7K 166960K 63 0 ifgroup 46 2K 2K 166960K 86 0 sysctl 4 1K 9K 166960K 11 0 counters 32 17K 18K 166960K 45 0 ioctlops 0 0K 4K 166960K 279 0 iov 0 0K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 4 8K 8K 166960K 8 0 vnodes 1390 87K 88K 166960K 2023 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K