uvm_fault(0xfffffd807c593a28, 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 * 50933 29353 0 0 0x4000000 0 syz-executor ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033909ca8,ffff80003c9438f0,ffff80003c943840) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9438f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9438f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593af9ea10, 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(0xfffffd807c593a28, 0xf, 0, 1) -> e ddb> trace ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033909ca8,ffff80003c9438f0,ffff80003c943840) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9438f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9438f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593af9ea10, count: -5 ddb> show registers rdi 0xffff800036920000 rsi 0x13a6 __ALIGN_SIZE+0x3a6 rbp 0xffff80003c943610 rbx 0xfffffd8007bfb750 rdx 0xffff800036920000 rcx 0x13a5 __ALIGN_SIZE+0x3a5 rax 0xffffffff82a66cf3 ktrops+0x43 r8 0xfffffd806bb81a80 r9 0xfffffd8007bfb750 r10 0x798bcdad142b5744 r11 0xd57fbe8c3399ae6 r12 0xffff800033909ca8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82a66d08 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c943590 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=50933 pid=29353 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=0xffff800033908020,0xffff800033908560 process=0xffff8000ffff9f98 user=0xffff80003c93e000, vmspace=0xfffffd807c593a28 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 54532 338422 25736 0 2 0 syz-executor 54532 494662 25736 0 3 0x4000080 fsleep syz-executor 54532 17335 25736 0 3 0x4000080 fsleep syz-executor 56631 401355 75575 0 2 0 syz-executor 56631 148303 75575 0 3 0x4000080 fsleep syz-executor 98038 45383 708 0 2 0 syz-executor 98038 126223 708 0 3 0x4000080 kqsel syz-executor 98038 319690 708 0 3 0x4000080 fsleep syz-executor 89361 497342 18731 0 2 0 syz-executor 89361 50601 18731 0 3 0x4000080 fsleep syz-executor 89361 407368 18731 0 3 0x4000080 fsleep syz-executor 89361 143602 18731 0 3 0x4000080 fsleep syz-executor 29353 255603 8622 0 2 0 syz-executor *29353 50933 8622 0 7 0x4000000 syz-executor 76234 168214 36609 0 2 0x2 syz-executor 8622 302488 36609 0 3 0x82 nanoslp syz-executor 75575 125077 36609 0 3 0x82 nanoslp syz-executor 708 469303 36609 0 3 0x82 nanoslp syz-executor 23474 346779 36609 0 2 0x2 syz-executor 25736 241181 36609 0 3 0x82 nanoslp syz-executor 42916 400255 36609 0 2 0x2 syz-executor 18731 42236 36609 0 3 0x82 nanoslp syz-executor 36609 479318 39688 0 3 0x82 kqread syz-executor 39688 291527 5123 0 3 0x10008a sigsusp ksh 5123 364053 94929 0 3 0x98 kqread sshd-session 94929 165426 76247 0 3 0x92 kqread sshd-session 1565 21389 1 0 3 0x100083 ttyin getty 76247 258719 1 0 3 0x88 kqread sshd 81132 289969 13609 73 3 0x1100090 kqread syslogd 13609 387745 1 0 3 0x100082 sbwait syslogd 91365 151084 1 0 3 0x100080 kqread resolvd 66994 238139 8530 77 3 0x100092 kqread dhcpleased 23301 62180 8530 77 3 0x100092 kqread dhcpleased 8530 21667 1 0 3 0x80 kqread dhcpleased 81011 492284 0 0 3 0x14200 bored smr 40518 202862 0 0 2 0x14200 zerothread 50016 4979 0 0 3 0x14200 aiodoned aiodoned 67115 413001 0 0 3 0x14200 syncer update 60672 135575 0 0 3 0x14200 cleaner cleaner 99429 471814 0 0 3 0x14200 reaper reaper 30079 17283 0 0 3 0x14200 pgdaemon pagedaemon 26452 517112 0 0 3 0x14200 bored viomb 68599 82959 0 0 3 0x40014200 acpi0 acpi0 88350 301377 0 0 2 0x14200 softnet0 10408 372606 0 0 3 0x14200 bored systqmp 52365 495658 0 0 3 0x14200 bored systq 18711 55058 0 0 3 0x40014200 tmoslp softclock 98556 28005 0 0 3 0x40014200 idle0 1 229626 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 10173 11169K 11169K 166960K 11263 0 pcb 18 13K 14K 166960K 65 0 rtable 205 5K 5K 166960K 258 0 pf 30 12K 12K 166960K 30 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 3 1K 9K 166960K 7 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 2K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1337 84K 84K 166960K 1359 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 148 0 proc 57 58K 100K 166960K 472 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 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 345 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 212 159K 167K 166960K 2871 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 36 72K 96K 166960K 1170 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 19 0 NDP 27 2K 2K 166960K 27 0 temp 35 8630K 8694K 166960K 4022 0 kqueue 13 20K 26K 166960K 26 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 38 0 34 1 0 1 1 0 8 0 rtentry 136 95 0 1 4 0 4 4 0 8 0 unpcb 144 37 0 21 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 13 0 7 1 0 1 1 0 8 0 arp 96 10 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 101 0 89 4 0 4 4 0 8 2 nd6 112 16 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 436 0 0 28 0 28 28 0 8 0 art_table 40 437 0 0 5 0 5 5 0 8 0 art_node 32 95 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1564 0 60 95 0 95 95 0 8 0 ffsino 256 1565 0 60 95 0 95 95 0 8 0 nchpl 144 1769 0 87 63 0 63 63 0 8 0 uvmvnodes 80 1653 0 0 34 0 34 34 0 8 0 vnodes 216 1653 0 0 92 0 92 92 0 8 0 namei 1024 5225 0 5223 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6353 0 6353 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 422 0 382 6 0 6 6 0 8 0 knotepl 120 3507 0 3460 9 0 9 9 0 8 7 kqueuepl 184 23 0 12 1 0 1 1 0 8 0 pipepl 304 99 0 72 3 0 3 3 0 8 0 fdescpl 448 409 0 382 5 0 5 5 0 8 0 filepl 120 1416 0 1193 9 0 9 9 0 8 1 lockfpl 104 82 0 78 1 0 1 1 0 8 0 lockfspl 48 11 0 7 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 70 0 59 1 0 1 1 0 8 0 zombiepl 144 382 0 382 1 0 1 1 0 8 1 processpl 1152 422 0 382 4 0 4 4 0 8 0 procpl 664 451 0 402 5 0 5 5 0 8 0 sockpl 552 176 0 144 5 0 5 5 0 8 2 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2449 0 2395 14 0 14 14 0 8 6 mcl2k 2048 162 0 161 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3955 0 3821 10 0 10 10 0 8 1 bufpl 280 2835 0 117 195 0 195 195 0 8 0 anonpl 24 97413 0 94420 23 0 23 23 0 187 3 amapchunkpl 152 8232 0 7796 20 0 20 20 0 158 1 amappl16 200 1839 0 1822 5 0 5 5 0 8 4 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 165 0 154 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 0 1 1 0 8 1 amappl12 168 1019 0 991 3 0 3 3 0 8 0 amappl11 160 64 0 54 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 0 1 1 0 8 1 amappl9 144 254 0 254 1 0 1 1 0 8 1 amappl8 136 21 0 20 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 167 0 164 1 0 1 1 0 8 0 amappl5 112 115 0 109 1 0 1 1 0 8 0 amappl4 104 264 0 249 1 0 1 1 0 8 0 amappl3 96 1227 0 1142 3 0 3 3 0 8 0 amappl2 88 635 0 569 2 0 2 2 0 8 0 amappl1 80 7946 0 7404 13 0 13 13 0 8 0 amappl 88 2243 0 2095 4 0 4 4 0 92 0 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 409 0 382 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 409 0 382 1 0 1 1 0 8 0 vmmpekpl 168 4726 0 4699 2 0 2 2 0 8 0 vmmpepl 168 32873 0 31150 82 0 82 82 0 357 2 vmsppl 368 408 0 382 4 0 4 4 0 8 1 rwobjpl 40 13703 0 11230 26 0 26 26 0 8 0 pdppl 4096 824 0 764 94 12 82 82 0 8 22 pvpl 32 209234 0 201175 72 0 72 72 0 265 1 pmappl 216 408 0 382 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 359 0 12 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033909ca8,ffff80003c9438f0,ffff80003c943840) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9438f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9438f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593af9ea10, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033909ca8,ffffffffffffffff,0,a0c7df9f,fffffd806bb81a80,fffffd8007bfb750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bb81a80,4,20c7df9f,0,ffff800033909ca8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033909ca8,ffff80003c9438f0,ffff80003c943840) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9438f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9438f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7593af9ea10, count: -5