uvm_fault(0xfffffd806b8c0b58, 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 *376518 19708 0 0 0x4000000 0 syz-executor ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c982cf8,ffff80003c95d1a0,ffff80003c95d0f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d1a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d1a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xca765b58d40, 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(0xfffffd806b8c0b58, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c982cf8,ffff80003c95d1a0,ffff80003c95d0f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d1a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d1a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xca765b58d40, count: -5 ddb> show registers rdi 0xffff80002ccfa000 rsi 0x773 rbp 0xffff80003c95cec0 rbx 0xfffffd8007bfb548 rdx 0xffff80002ccfa000 rcx 0x772 rax 0xffffffff829a6c03 ktrops+0x43 r8 0xfffffd806a78be60 r9 0xfffffd8007bfb548 r10 0x6dfcb59f03d8d794 r11 0x2171690aa6d0457d r12 0xffff80003c982cf8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7de9b rip 0xffffffff829a6c18 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c95ce40 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=376518 pid=19708 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=0xffff80003c9827d8,0xffffffff839d51a8 process=0xffff8000ffff7678 user=0xffff80003c958000, vmspace=0xfffffd806b8c0b58 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 19708 24689 20174 0 2 0 syz-executor *19708 376518 20174 0 7 0x4000000 syz-executor 98550 457527 33974 0 2 0 syz-executor 98550 395080 33974 0 3 0x4000080 fsleep syz-executor 89308 474924 32855 0 2 0 syz-executor 89308 192714 32855 0 3 0x4000080 fsleep syz-executor 88194 433426 13621 0 2 0 syz-executor 54206 147341 0 0 3 0x14200 bored sosplice 96056 128504 14536 0 3 0x80 nanoslp syz-executor 96056 84049 14536 0 2 0x4000000 syz-executor 96056 25381 14536 0 3 0x4000080 kqpoll syz-executor 96056 495498 14536 0 3 0x4000080 fsleep syz-executor 13621 247165 29437 0 3 0x82 nanoslp syz-executor 47731 479837 29437 0 2 0x2 syz-executor 46140 174896 29437 0 2 0x2 syz-executor 14536 460700 29437 0 3 0x82 nanoslp syz-executor 32855 213712 29437 0 3 0x82 nanoslp syz-executor 33974 148473 29437 0 3 0x82 nanoslp syz-executor 20174 433790 29437 0 3 0x82 nanoslp syz-executor 35246 273742 29437 0 2 0x2 syz-executor 29437 322326 74458 0 3 0x82 kqread syz-executor 74458 13506 83522 0 3 0x10008a sigsusp ksh 83522 475742 49966 0 3 0x98 kqread sshd-session 49966 451219 14558 0 3 0x92 kqread sshd-session 89438 20780 1 0 3 0x100083 ttyin getty 14558 429514 1 0 3 0x88 kqread sshd 16367 431294 11384 73 3 0x1100090 kqread syslogd 11384 290387 1 0 3 0x100082 sbwait syslogd 41880 109754 1 0 3 0x100080 kqread resolvd 30817 421331 27018 77 3 0x100092 kqread dhcpleased 86167 378179 27018 77 3 0x100092 kqread dhcpleased 27018 101725 1 0 3 0x80 kqread dhcpleased 6448 514111 0 0 3 0x14200 bored smr 12078 224453 0 0 2 0x14200 zerothread 42353 500965 0 0 3 0x14200 aiodoned aiodoned 54771 40599 0 0 3 0x14200 syncer update 35276 491157 0 0 3 0x14200 cleaner cleaner 69340 274728 0 0 3 0x14200 reaper reaper 73049 51136 0 0 3 0x14200 pgdaemon pagedaemon 68099 216380 0 0 3 0x14200 bored viomb 23359 25203 0 0 3 0x40014200 acpi0 acpi0 92928 398092 0 0 3 0x14200 bored softnet3 33064 391695 0 0 3 0x14200 bored softnet2 8217 304488 0 0 3 0x14200 bored softnet1 77494 446073 0 0 3 0x14200 bored softnet0 11080 1527 0 0 3 0x14200 bored systqmp 3539 360764 0 0 3 0x14200 bored systq 81552 458388 0 0 3 0x40014200 tmoslp softclock 83763 76178 0 0 3 0x40014200 idle0 1 291402 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 10174 11106K 11122K 166960K 11263 0 pcb 20 12K 12K 166960K 29 0 rtable 245 7K 8K 166960K 371 0 pf 30 12K 13K 166960K 31 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 4K 166960K 36 0 iov 0 0K 1K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1340 84K 85K 166960K 1365 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 152 0 proc 59 59K 124K 166960K 477 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 31 148K 148K 166960K 31 0 exec 0 0K 2K 166960K 346 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 200 158K 167K 166960K 2826 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 36 72K 96K 166960K 1174 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 11 0K 2K 166960K 27 0 temp 36 8662K 8726K 166960K 3816 0 kqueue 13 20K 24K 166960K 25 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 35 1 0 1 1 0 8 0 rtentry 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 40 0 24 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 9 0 3 1 0 1 1 0 8 0 arp 88 18 0 0 1 0 1 1 0 8 0 inpcb 328 75 0 60 2 0 2 2 0 8 0 nd6 104 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfrule 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1569 0 66 95 0 95 95 0 8 0 ffsino 248 1569 0 66 95 0 95 95 0 8 0 nchpl 144 1775 0 95 63 0 63 63 0 8 0 uvmvnodes 80 1660 0 0 34 0 34 34 0 8 0 vnodes 216 1660 0 0 93 0 93 93 0 8 0 namei 1024 5276 0 5274 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5622 0 5622 2 0 2 2 1 8 2 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 430 0 386 7 0 7 7 0 8 1 knotepl 120 3436 0 3389 9 0 9 9 0 8 7 kqueuepl 184 24 0 14 1 0 1 1 0 8 0 pipepl 296 101 0 73 3 0 3 3 0 8 0 fdescpl 440 413 0 386 5 0 5 5 0 8 1 filepl 120 1475 0 1256 10 0 10 10 0 8 2 lockfpl 104 23 0 20 1 0 1 1 0 8 0 lockfspl 48 9 0 6 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 66 0 55 1 0 1 1 0 8 0 zombiepl 144 386 0 386 1 0 1 1 0 8 1 processpl 1160 430 0 386 4 0 4 4 0 8 0 procpl 656 466 0 416 6 0 6 6 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 528 154 0 120 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2439 0 2387 15 0 15 15 0 8 8 mcl2k 2048 223 0 220 4 0 4 4 0 8 3 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4110 0 3956 14 0 14 14 0 8 0 bufpl 280 2255 0 117 153 0 153 153 0 8 0 anonpl 24 70269 0 67373 20 0 20 20 0 187 0 amapchunkpl 152 7638 0 7247 21 0 21 21 0 158 2 amappl16 200 766 0 746 4 0 4 4 0 8 2 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 100 0 90 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 0 1 1 0 8 1 amappl12 168 1017 0 990 3 0 3 3 0 8 1 amappl11 160 48 0 37 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 0 1 1 0 8 1 amappl9 144 253 0 253 1 0 1 1 0 8 1 amappl8 136 21 0 20 1 0 1 1 0 8 0 amappl7 128 93 0 82 1 0 1 1 0 8 0 amappl6 120 162 0 159 1 0 1 1 0 8 0 amappl5 112 112 0 106 1 0 1 1 0 8 0 amappl4 104 278 0 263 1 0 1 1 0 8 0 amappl3 96 1262 0 1175 3 0 3 3 0 8 0 amappl2 88 596 0 544 2 0 2 2 0 8 0 amappl1 80 7771 0 7236 13 0 13 13 0 8 0 amappl 88 2203 0 2066 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 24 413 0 386 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 413 0 386 1 0 1 1 0 8 0 vmmpekpl 168 4968 0 4933 2 0 2 2 0 8 0 vmmpepl 168 31329 0 29646 82 0 82 82 0 357 0 vmsppl 360 412 0 386 4 0 4 4 0 8 1 rwobjpl 32 12437 0 9985 21 0 21 21 0 8 0 pdppl 4096 832 0 772 96 30 66 82 0 8 6 pvpl 32 182627 0 174661 71 0 71 71 0 265 1 pmappl 216 412 0 386 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 266 0 30 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c982cf8,ffff80003c95d1a0,ffff80003c95d0f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d1a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d1a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xca765b58d40, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c982cf8,ffffffffffffffff,0,a0c7de9b,fffffd806a78be60,fffffd8007bfb548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a78be60,4,20c7de9b,0,ffff80003c982cf8) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c982cf8,ffff80003c95d1a0,ffff80003c95d0f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d1a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d1a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xca765b58d40, count: -5