uvm_fault(0xfffffd806c215dd0, 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 *194182 71187 0 0 0x4000000 0 syz-executor ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a4c2a38,ffff80003766b610,ffff80003766b560) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80003766b610) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9256f023d0, 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(0xfffffd806c215dd0, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a4c2a38,ffff80003766b610,ffff80003766b560) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80003766b610) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9256f023d0, count: -5 ddb> show registers rdi 0xffff80002f3e8000 rsi 0x78d1 __ALIGN_SIZE+0x68d1 rbp 0xffff80003766b330 rbx 0xfffffd807f7d74e0 rdx 0xffff80002f3e8000 rcx 0x78d0 __ALIGN_SIZE+0x68d0 rax 0xffffffff8131b423 ktrops+0x43 r8 0xfffffd80663d87b8 r9 0xfffffd807f7d74e0 r10 0x792cf9b76ac3b7aa r11 0xe3461bfa2de1154d r12 0xffff80002a4c2a38 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df93 rip 0xffffffff8131b438 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003766b2b0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=194182 pid=71187 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=0xffff80003760a2c0,0xffffffff835f37a0 process=0xffff8000376b7380 user=0xffff800037666000, vmspace=0xfffffd806c215dd0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 71187 495718 22451 0 2 0 syz-executor *71187 194182 22451 0 7 0x4000000 syz-executor 47459 52538 76902 0 2 0 syz-executor 47459 285774 76902 0 3 0x4000080 fsleep syz-executor 82354 131787 54332 0 2 0x10 syz-executor 82354 419016 54332 0 3 0x4000090 fsleep syz-executor 79070 382494 0 0 3 0x14200 acct acct 58172 382495 81279 0 2 0x480 syz-executor 58172 352770 81279 0 3 0x4000080 dtread syz-executor 58172 506658 81279 0 3 0x4000080 dtread syz-executor 58172 39261 81279 0 3 0x4000080 fsleep syz-executor 26040 489904 0 0 3 0x14200 bored sosplice 84360 476742 1 0 3 0x100083 ttyin getty 7820 145791 0 0 3 0x14280 nfsidl nfsio 16878 104777 0 0 3 0x14280 nfsidl nfsio 98084 298025 0 0 3 0x14280 nfsidl nfsio 63076 85624 0 0 3 0x14280 nfsidl nfsio 37339 439792 0 0 3 0x14280 nfsidl nfsio 3288 262217 0 0 3 0x14280 nfsidl nfsio 49109 198195 0 0 3 0x14280 nfsidl nfsio 79177 430193 0 0 3 0x14280 nfsidl nfsio 51657 116164 0 0 3 0x14280 nfsidl nfsio 78719 464014 0 0 3 0x14280 nfsidl nfsio 70011 111827 0 0 3 0x14280 nfsidl nfsio 48608 364310 0 0 3 0x14280 nfsidl nfsio 76308 243652 0 0 3 0x14280 nfsidl nfsio 2657 337245 0 0 3 0x14280 nfsidl nfsio 74059 486866 0 0 3 0x14280 nfsidl nfsio 61638 54900 0 0 3 0x14280 nfsidl nfsio 54399 259563 0 0 3 0x14280 nfsidl nfsio 44761 502025 0 0 3 0x14280 nfsidl nfsio 16619 96217 0 0 3 0x14280 nfsidl nfsio 72047 100018 0 0 3 0x14280 nfsidl nfsio 54332 501826 21023 0 2 0x482 syz-executor 49142 397437 21023 0 2 0x2 syz-executor 82707 91920 21023 0 3 0x82 nanoslp syz-executor 81279 385547 21023 0 3 0x82 nanoslp syz-executor 22451 353378 21023 0 2 0x482 syz-executor 76902 258222 21023 0 3 0x82 nanoslp syz-executor 82915 205040 21023 0 2 0x2 syz-executor 29101 226937 21023 0 2 0x482 syz-executor 21023 230879 62947 0 3 0x82 kqread syz-executor 62947 62750 24989 0 3 0x10008a sigsusp ksh 24989 446312 45691 0 3 0x98 kqread sshd-session 45691 123685 83000 0 3 0x92 kqread sshd-session 83000 459610 1 0 3 0x88 kqread sshd 59622 79297 25769 73 3 0x1100090 kqread syslogd 25769 89593 1 0 3 0x100082 sbwait syslogd 40630 181785 1 0 3 0x100080 kqread resolvd 43084 442918 45234 77 3 0x100092 kqread dhcpleased 19274 159755 45234 77 3 0x100092 kqread dhcpleased 45234 107895 1 0 3 0x80 kqread dhcpleased 83622 49214 0 0 3 0x14200 bored smr 99103 113880 0 0 2 0x14200 zerothread 57312 455851 0 0 3 0x14200 aiodoned aiodoned 23320 84892 0 0 3 0x14200 syncer update 48587 483070 0 0 3 0x14200 cleaner cleaner 56928 57016 0 0 3 0x14200 reaper reaper 42930 460792 0 0 3 0x14200 pgdaemon pagedaemon 48379 377102 0 0 3 0x14200 bored viomb 69480 162320 0 0 3 0x40014200 acpi0 acpi0 92274 2739 0 0 3 0x14200 bored softnet3 21831 280585 0 0 3 0x14200 bored softnet2 79234 335665 0 0 3 0x14200 bored softnet1 10493 191501 0 0 3 0x14200 bored softnet0 58321 440323 0 0 3 0x14200 bored systqmp 34828 485576 0 0 3 0x14200 bored systq 24849 515548 0 0 2 0x40014200 softclock 40395 266936 0 0 3 0x40014200 idle0 1 433000 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 10205 11228K 11424K 166960K 11417 0 pcb 18 12K 12K 166960K 47 0 rtable 221 6K 6K 166960K 374 0 pf 30 12K 13K 166960K 35 0 ifaddr 43 7K 7K 166960K 49 0 ifgroup 50 2K 2K 166960K 54 0 sysctl 3 0K 0K 166960K 3 0 counters 30 17K 17K 166960K 32 0 ioctlops 0 0K 4K 166960K 35 0 iov 0 0K 12K 166960K 13 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1378 87K 87K 166960K 1475 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 15 53K 97K 166960K 269 0 sigio 0 0K 0K 166960K 6 0 proc 60 59K 124K 166960K 494 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 60 0 in_multi 99 7K 7K 166960K 107 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 376 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 211 72K 74K 166960K 4011 0 UVM aobj 5 2K 2K 166960K 6 0 pinsyscall 37 74K 96K 166960K 1296 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 5 0 NDP 11 0K 2K 166960K 30 0 temp 37 6810K 6876K 166960K 12395 0 kqueue 13 20K 26K 166960K 50 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 47 0 44 1 0 1 1 0 8 0 rtentry 112 115 0 13 4 0 4 4 0 8 0 unpcb 144 255 0 224 6 0 6 6 0 8 4 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 49 0 42 2 0 2 2 0 8 1 arp 88 19 0 0 1 0 1 1 0 8 0 ipq 40 2 0 1 2 1 1 1 0 8 0 ipqe 40 3 0 2 2 1 1 1 0 8 0 inpcb 336 187 0 177 3 1 2 2 0 8 0 nd6 104 24 0 0 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 2 0 2 1 0 1 1 0 8 1 pfrule 1344 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 483 0 41 29 0 29 29 0 8 1 art_table 32 484 0 41 4 0 4 4 0 8 0 art_node 16 113 0 22 1 0 1 1 0 8 0 semapl 112 4 0 1 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1788 0 287 95 0 95 95 0 8 0 ffsino 240 1788 0 287 89 0 89 89 0 8 0 nchpl 144 2186 0 506 63 0 63 63 0 8 0 uvmvnodes 80 1960 0 0 40 0 40 40 0 8 0 vnodes 216 1960 0 0 109 0 109 109 0 8 0 namei 1024 6482 0 6481 3 2 1 2 0 8 0 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 6531 0 6531 10 8 2 8 1 8 2 plimitpl 152 41 0 25 1 0 1 1 0 8 0 sigapl 424 572 0 506 9 1 8 8 0 8 0 futexpl 64 2203 0 2200 1 0 1 1 0 8 0 knotepl 120 9684 0 9637 17 7 10 10 0 8 8 kqueuepl 184 58 0 49 1 0 1 1 0 8 0 pipepl 288 119 0 92 4 1 3 3 0 8 1 fdescpl 432 534 0 506 5 1 4 5 0 8 0 filepl 120 2236 0 1971 12 0 12 12 0 8 3 lockfpl 104 42 0 40 1 0 1 1 0 8 0 lockfspl 48 21 0 19 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 33 0 17 1 0 1 1 0 8 0 ucredpl 104 160 0 147 1 0 1 1 0 8 0 zombiepl 144 568 0 566 1 0 1 1 0 8 0 processpl 1096 572 0 506 5 0 5 5 0 8 0 procpl 648 813 0 741 8 0 8 8 0 8 0 sockpl 504 495 0 451 22 1 21 21 0 8 15 mcl64k 65536 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 7 0 7 1 1 0 1 0 8 0 mcl4k 4096 2704 0 2653 18 11 7 17 0 8 0 mcl2k 2048 255 0 254 2 1 1 1 0 8 0 mtagpl 96 8 0 4 2 1 1 1 0 8 0 mbufpl 256 6423 0 6231 19 6 13 18 0 8 0 bufpl 280 2431 0 95 167 0 167 167 0 8 0 anonpl 24 185293 0 182200 68 24 44 45 0 187 18 amapchunkpl 152 13714 0 13267 29 3 26 26 0 158 6 amappl16 200 5338 0 5317 30 16 14 14 0 8 12 amappl15 192 19 0 19 1 1 0 1 0 8 0 amappl14 184 130 0 120 1 0 1 1 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 1153 0 1124 3 1 2 3 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 15 0 15 1 1 0 1 0 8 0 amappl9 144 144 0 144 1 1 0 1 0 8 0 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 99 0 88 1 0 1 1 0 8 0 amappl6 120 167 0 165 1 0 1 1 0 8 0 amappl5 112 122 0 114 1 0 1 1 0 8 0 amappl4 104 288 0 274 1 0 1 1 0 8 0 amappl3 96 2427 0 2341 3 0 3 3 0 8 0 amappl2 88 794 0 720 2 0 2 2 0 8 0 amappl1 80 7721 0 7213 13 2 11 13 0 8 0 amappl 88 3650 0 3493 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 534 0 506 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 534 0 506 1 0 1 1 0 8 0 vmmpekpl 168 5700 0 5664 2 0 2 2 0 8 0 vmmpepl 168 42230 0 40577 96 11 85 88 0 357 8 vmsppl 352 533 0 506 4 1 3 4 0 8 0 rwobjpl 24 19119 0 16335 18 0 18 18 0 8 0 pdppl 4096 1074 0 1012 102 36 66 82 0 8 4 pvpl 32 330524 0 321685 138 31 107 110 0 265 22 pmappl 216 533 0 506 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 399 0 64 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a4c2a38,ffff80003766b610,ffff80003766b560) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80003766b610) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9256f023d0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a4c2a38,ffffffffffffffff,0,a0c7df93,fffffd80663d87b8,fffffd807f7d74e0) at ktrops+0x58 sys/kern/kern_ktrace.c:561 doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd80663d87b8,4,20c7df93,0,ffff80002a4c2a38) at doktrace+0x6dd sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a4c2a38,ffff80003766b610,ffff80003766b560) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:549 syscall(ffff80003766b610) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb9256f023d0, count: -5