uvm_fault(0xfffff3000bc44d08, 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 *157435 50300 0 0 0x4000000 0 syz-executor ktrops(ffff80003c992560,ffffffffffffffff,0,80001122,fffff3006b40e7e0,fffff30007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80003c992560,ffffffffffffffff,0,80001122,fffff3006b40e7e0,fffff30007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff3006b40e7e0,4,1122,0,ffff80003c992560) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff3006b40e7e0,4,1122,0,ffff80003c992560) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80003c992560,ffff80003c8e7c70,ffff80003c8e7bc0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c8e7c70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e7c70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5391a73ec00, 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(0xfffff3000bc44d08, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c992560,ffffffffffffffff,0,80001122,fffff3006b40e7e0,fffff30007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80003c992560,ffffffffffffffff,0,80001122,fffff3006b40e7e0,fffff30007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff3006b40e7e0,4,1122,0,ffff80003c992560) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff3006b40e7e0,4,1122,0,ffff80003c992560) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80003c992560,ffff80003c8e7c70,ffff80003c8e7bc0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c8e7c70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e7c70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5391a73ec00, count: -5 ddb> show registers rdi 0xffff80003c992560 rsi 0xffffffffffffffff rbp 0xffff80003c8e7990 rbx 0xfffff30007ffd6e8 rdx 0 rcx 0x80001122 __kernel_virt_to_phys+0x1122 rax 0xffff80003c992560 r8 0xfffff3006b40e7e0 r9 0xfffff30007ffd6e8 r10 0xdf99a41fdca04345 r11 0xedc6422ac407aeff r12 0xffff80003c992560 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0x80001122 __kernel_virt_to_phys+0x1122 rip 0xffffffff82d171d8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c8e7910 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=157435 pid=50300 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=0xffff80003c992a90,0xffffffff83ad7b30 process=0xffff80002a752d20 user=0xffff80003c8e2000, vmspace=0xfffff3000bc44d08 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 50300 125953 56428 0 2 0 syz-executor *50300 157435 56428 0 7 0x4000000 syz-executor 86882 176119 11603 0 2 0xc80 syz-executor 86882 299569 11603 0 2 0x4000c80 syz-executor 86882 483978 11603 0 3 0x4000080 fsleep syz-executor 86882 513889 11603 0 3 0x4000080 fsleep syz-executor 70522 9593 85950 0 2 0xc80 syz-executor 70522 241179 85950 0 3 0x4000080 kqread syz-executor 70522 85341 85950 0 3 0x4000080 fsleep syz-executor 70522 60812 85950 0 3 0x4000080 fsleep syz-executor 84264 349161 70427 0 2 0 syz-executor 84264 329521 70427 0 3 0x4000080 fsleep syz-executor 5761 41112 96750 0 2 0xc80 syz-executor 5761 257641 96750 0 3 0x4000080 netcon syz-executor 5761 270976 96750 0 3 0x4000080 fsleep syz-executor 89274 258149 1 0 3 0x82 nanoslp getty 61129 258384 0 0 3 0x14200 acct acct 91272 197745 0 0 3 0x14280 nfsidl nfsio 49287 133574 0 0 3 0x14280 nfsidl nfsio 92674 125723 0 0 3 0x14280 nfsidl nfsio 35167 500596 0 0 3 0x14280 nfsidl nfsio 43023 341196 0 0 3 0x14280 nfsidl nfsio 13826 285015 0 0 3 0x14280 nfsidl nfsio 20541 234224 0 0 3 0x14280 nfsidl nfsio 97100 50830 0 0 3 0x14280 nfsidl nfsio 60338 368634 0 0 3 0x14280 nfsidl nfsio 41865 509654 0 0 3 0x14280 nfsidl nfsio 55113 258965 0 0 3 0x14280 nfsidl nfsio 92848 428061 0 0 3 0x14280 nfsidl nfsio 72489 12927 0 0 3 0x14280 nfsidl nfsio 84341 50142 0 0 3 0x14280 nfsidl nfsio 32698 116915 0 0 3 0x14280 nfsidl nfsio 82015 369260 0 0 3 0x14280 nfsidl nfsio 78393 73693 0 0 3 0x14280 nfsidl nfsio 44328 467611 0 0 3 0x14280 nfsidl nfsio 32940 374351 0 0 3 0x14280 nfsidl nfsio 35869 83003 0 0 3 0x14280 nfsidl nfsio 65953 76640 88326 0 3 0x100082 sbwait ndp 88326 489929 63896 0 3 0x10008a sigsusp sh 70427 172337 67185 0 2 0xc82 syz-executor 11603 45482 67185 0 3 0x82 nanoslp syz-executor 967