uvm_fault(0xfffffd806ba198b0, 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 *305806 35703 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e54e0,ffff80003c951ac0,ffff80003c951a10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c951ac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c951ac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdfa271ef1b0, 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(0xfffffd806ba198b0, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e54e0,ffff80003c951ac0,ffff80003c951a10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c951ac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c951ac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdfa271ef1b0, count: -5 ddb> show registers rdi 0xffff80002a7e54e0 rsi 0xffffffffffffffff rbp 0xffff80003c9517e0 rbx 0xfffffd8007bfb820 rdx 0 rcx 0xa0c7df9b rax 0xffff80002a7e54e0 r8 0xfffffd806af6f708 r9 0xfffffd8007bfb820 r10 0x1d30ddbd28f7dc8d r11 0xc2f0a6a1fabac1c3 r12 0xffff80002a7e54e0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9b rip 0xffffffff811ee128 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c951760 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=305806 pid=35703 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=0xffff80002a7e42b8,0xffff80002a7e5788 process=0xffff800039928498 user=0xffff80003c94c000, vmspace=0xfffffd806ba198b0 estcpu=2, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35703 433427 83347 0 2 0 syz-executor *35703 305806 83347 0 7 0x4000000 syz-executor 36601 481778 73963 0 2 0 syz-executor 36601 320990 73963 0 2 0x4000000 syz-executor 36601 446484 73963 0 3 0x4000080 fsleep syz-executor 45998 79828 11048 0 2 0 syz-executor 45998 176781 11048 0 3 0x4000080 ttyin syz-executor 45998 382030 11048 0 3 0x4000080 fsleep syz-executor 45998 337491 11048 0 3 0x4000080 fsleep syz-executor 45998 204895 11048 0 3 0x4000080 fsleep syz-executor 73963 22314 96825 0 2 0xc82 syz-executor 94505 449541 96825 0 2 0x2 syz-executor 54917 180438 96825 0 2 0x2 syz-executor 84194 175238 96825 0 2 0x2 syz-executor 83347 438144 96825 0 2 0xc82 syz-executor 11048 286646 96825 0 2 0xc82 syz-executor 84908 70327 96825 0 2 0xc82 syz-executor 31169 300222 96825 0 2 0xc82 syz-executor 96825 388015 97025 0 3 0x82 kqread syz-executor 97025 183102 27965 0 3 0x10008a sigsusp ksh 27965 101400 41958 0 3 0x98 kqread sshd-session 41958 93483 38350 0 3 0x92 kqread sshd-session 54781 286797 1 0 3 0x100083 ttyin getty 38350 464815 1 0 3 0x88 kqread sshd 63555 174972 12251 73 3 0x1100090 kqread syslogd 12251 341530 1 0 3 0x100082 sbwait syslogd 18291 416369 1 0 3 0x100080 kqread resolvd 54375 37754 26812 77 3 0x100092 kqread dhcpleased 95341 224737 26812 77 3 0x100092 kqread dhcpleased 26812 173238 1 0 3 0x80 kqread dhcpleased 63855 96724 0 0 3 0x14200 bored smr 67077 428283 0 0 2 0x14200 zerothread 19699 127784 0 0 3 0x14200 aiodoned aiodoned 91394 357825 0 0 3 0x14200 syncer update 94871 68754 0 0 3 0x14200 cleaner cleaner 83015 277639 0 0 3 0x14200 reaper reaper 66396 163459 0 0 3 0x14200 pgdaemon pagedaemon 13811 475484 0 0 3 0x14200 bored viomb 93826 152238 0 0 3 0x40014200 acpi0 acpi0 86054 17313 0 0 2 0x14200 softnet0 19627 338635 0 0 3 0x14200 smrbar systqmp 34734 59881 0 0 3 0x14200 bored systq 85817 441812 0 0 3 0x40014200 tmoslp softclock 49838 457009 0 0 3 0x40014200 idle0 1 486822 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 10169 11040K 11180K 166960K 11312 0 pcb 18 14K 16K 166960K 125 0 rtable 169 5K 5K 166960K 271 0 pf 28 12K 13K 166960K 36 0 ifaddr 38 6K 7K 166960K 49 0 ifgroup 46 2K 2K 166960K 56 0 sysctl 2 1K 9K 166960K 6 0 counters 31 17K 17K 166960K 36 0 ioctlops 0 0K 4K 166960K 38 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1339 84K 84K 166960K 1399 0 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 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 220 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 124K 166960K 485 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 26 0 in_multi 88 6K 7K 166960K 111 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 361 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 217 151K 160K 166960K 3566 0 UVM aobj 7 2K 2K 166960K 8 0 pinsyscall 36 72K 96K 166960K 1252 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 10 0K 2K 166960K 30 0 temp 37 8630K 8694K 166960K 4256 0 kqueue 14 22K 30K 166960K 44 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 49 0 46 1 0 1 1 0 8 0 rtentry 136 100 0 25 4 0 4 4 0 8 0 unpcb 144 144 0 129 3 0 3 3 0 8 2 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 29 0 25 1 0 1 1 0 8 0 arp 96 12 0 2 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 187 0 179 7 0 7 7 0 8 6 nd6 104 16 0 2 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 474 0 44 30 0 30 30 0 8 1 art_table 40 475 0 44 5 0 5 5 0 8 0 art_node 32 100 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 2 0 0 1 0 1 1 0 8 0 shmpl 112 5 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1715 0 210 95 0 95 95 0 8 0 ffsino 256 1715 0 210 95 0 95 95 0 8 0 nchpl 144 2035 0 353 63 0 63 63 0 8 0 uvmvnodes 80 1814 0 0 38 0 38 38 0 8 0 vnodes 216 1814 0 0 101 0 101 101 0 8 0 namei 1024 6213 0 6210 2 0 2 2 0 8 1 kstatmem 264 28 0 8 2 0 2 2 0 8 0 scxspl 216 6910 0 6910 8 0 8 8 1 8 8 plimitpl 152 75 0 57 1 0 1 1 0 8 0 sigapl 424 497 0 457 6 0 6 6 0 8 1 knotepl 120 6142 0 6094 9 0 9 9 0 8 7 kqueuepl 184 47 0 37 1 0 1 1 0 8 0 pipepl 304 103 0 76 3 0 3 3 0 8 0 fdescpl 448 484 0 457 5 0 5 5 0 8 1 filepl 120 1977 0 1760 10 0 10 10 0 8 1 lockfpl 104 55 0 53 1 0 1 1 0 8 0 lockfspl 48 21 0 19 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 281 0 269 1 0 1 1 0 8 0 zombiepl 144 459 0 457 1 0 1 1 0 8 0 processpl 1152 497 0 457 4 0 4 4 0 8 0 procpl 664 644 0 597 5 0 5 5 0 8 0 sockpl 552 386 0 360 7 0 7 7 0 8 4 mcl64k 65536 7 0 7 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2563 0 2508 13 0 13 13 0 8 6 mcl2k 2048 328 0 325 2 0 2 2 0 8 1 mtagpl 96 5 0 5 1 0 1 1 0 8 1 mbufpl 256 4907 0 4759 19 0 19 19 0 8 7 bufpl 280 2946 0 118 202 0 202 202 0 8 0 anonpl 24 103267 0 100230 23 0 23 23 0 187 2 amapchunkpl 152 10462 0 10022 22 0 22 22 0 158 2 amappl16 200 1935 0 1914 5 0 5 5 0 8 3 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 0 1 1 0 8 1 amappl12 168 1096 0 1069 3 0 3 3 0 8 1 amappl11 160 78 0 68 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 0 1 1 0 8 1 amappl9 144 253 0 253 1 0 1 1 0 8 1 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 100 0 90 1 0 1 1 0 8 0 amappl6 120 169 0 165 1 0 1 1 0 8 0 amappl5 112 115 0 108 1 0 1 1 0 8 0 amappl4 104 278 0 261 1 0 1 1 0 8 0 amappl3 96 1709 0 1625 3 0 3 3 0 8 0 amappl2 88 717 0 649 2 0 2 2 0 8 0 amappl1 80 8254 0 7711 13 0 13 13 0 8 1 amappl 88 2910 0 2759 5 0 5 5 0 92 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 7 0 1 1 0 1 1 0 8 0 uaddrrnd 24 484 0 457 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 484 0 457 1 0 1 1 0 8 0 vmmpekpl 168 5335 0 5308 2 0 2 2 0 8 0 vmmpepl 168 37259 0 35523 83 0 83 83 0 357 0 vmsppl 368 483 0 457 4 0 4 4 0 8 1 rwobjpl 40 14712 0 12062 28 0 28 28 0 8 1 pdppl 4096 974 0 914 96 30 66 82 0 8 6 pvpl 32 234981 0 226940 76 0 76 76 0 265 2 pmappl 216 483 0 457 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 372 0 30 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e54e0,ffff80003c951ac0,ffff80003c951a10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c951ac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c951ac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdfa271ef1b0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e54e0,ffffffffffffffff,0,a0c7df9b,fffffd806af6f708,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806af6f708,4,20c7df9b,0,ffff80002a7e54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e54e0,ffff80003c951ac0,ffff80003c951a10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c951ac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c951ac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdfa271ef1b0, count: -5