uvm_fault(0xfffffd806c21e180, 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 *480275 76369 0 0 0x4000000 0 syz-executor ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c9474e8,ffff80003c95d240,ffff80003c95d190) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d240) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d240) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x31c9d6a8130, 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(0xfffffd806c21e180, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c9474e8,ffff80003c95d240,ffff80003c95d190) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d240) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d240) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x31c9d6a8130, count: -5 ddb> show registers rdi 0xffff80002ccfc000 rsi 0x1b4c __ALIGN_SIZE+0xb4c rbp 0xffff80003c95cf60 rbx 0xfffffd8007bfb8f0 rdx 0xffff80002ccfc000 rcx 0x1b4b __ALIGN_SIZE+0xb4b rax 0xffffffff81c97da3 ktrops+0x43 r8 0xfffffd806a3ed568 r9 0xfffffd8007bfb8f0 r10 0x8094d695df5dd4d1 r11 0xea624c920f6e12e r12 0xffff80003c9474e8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff81c97db8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c95cee0 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=480275 pid=76369 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=57, usrpri=57, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7cc018,0xffff80003c947a28 process=0xffff8000ffffb198 user=0xffff80003c958000, vmspace=0xfffffd806c21e180 estcpu=7, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 76369 36999 59597 0 2 0 syz-executor *76369 480275 59597 0 7 0x4000000 syz-executor 78402 421789 67866 0 3 0x3000 suspend syz-executor 78402 330831 67866 0 2 0x4081000 syz-executor 78402 406750 67866 0 2 0x4081000 syz-executor 98839 452793 0 0 3 0x14200 bored sosplice 56965 17164 1 0 3 0x100083 ttyin getty 14660 312367 6116 0 3 0x82 nanoslp syz-executor 20045 240487 6116 0 3 0x82 nanoslp syz-executor 67866 515376 6116 0 3 0x82 nanoslp syz-executor 79229 502479 6116 0 3 0x82 nanoslp syz-executor 38435 516043 6116 0 2 0x2 syz-executor 88188 197224 6116 0 2 0x2 syz-executor 59597 124198 6116 0 2 0xc82 syz-executor 13447 485587 6116 0 2 0x2 syz-executor 6116 164218 15828 0 3 0x82 kqread syz-executor 15828 284306 4027 0 3 0x10008a sigsusp ksh 4027 14148 7498 0 3 0x98 kqread sshd-session 7498 83374 17845 0 3 0x92 kqread sshd-session 17845 343225 1 0 3 0x88 kqread sshd 99369 156736 42711 73 3 0x1100090 kqread syslogd 42711 151899 1 0 3 0x100082 sbwait syslogd 21100 114855 1 0 3 0x100080 kqread resolvd 80926 453813 16807 77 3 0x100092 kqread dhcpleased 91667 162010 16807 77 3 0x100092 kqread dhcpleased 16807 217706 1 0 3 0x80 kqread dhcpleased 81032 4033 0 0 3 0x14200 bored smr 61140 370860 0 0 2 0x14200 zerothread 71195 304092 0 0 3 0x14200 aiodoned aiodoned 56028 410768 0 0 3 0x14200 syncer update 67149 9201 0 0 3 0x14200 cleaner cleaner 95129 188259 0 0 3 0x14200 reaper reaper 78083 270324 0 0 3 0x14200 pgdaemon pagedaemon 82179 387782 0 0 3 0x14200 bored viomb 23675 184689 0 0 3 0x40014200 acpi0 acpi0 64353 304366 0 0 2 0x14200 softnet0 36791 242799 0 0 3 0x14200 bored systqmp 46194 519226 0 0 3 0x14200 bored systq 64362 161126 0 0 3 0x40014200 tmoslp softclock 25794 402917 0 0 3 0x40014200 idle0 1 204346 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 11107K 11316K 166960K 11376 0 pcb 17 12K 16K 166960K 71 0 rtable 256 8K 8K 166960K 385 0 pf 31 13K 20K 166960K 44 0 ifaddr 43 7K 7K 166960K 46 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 3 1K 9K 166960K 7 0 counters 32 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 40 0 iov 0 0K 12K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1347 85K 85K 166960K 1423 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 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 12 41K 97K 166960K 227 0 proc 60 59K 108K 166960K 490 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 7 0 in_multi 99 7K 7K 166960K 103 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 151 678K 678K 166960K 151 0 exec 0 0K 1K 166960K 370 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 218 159K 160K 166960K 3692 0 UVM aobj 5 2K 4K 166960K 7 0 pinsyscall 36 72K 96K 166960K 1304 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 11 0K 2K 166960K 28 0 temp 40 8635K 8699K 166960K 5774 0 kqueue 13 20K 30K 166960K 40 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 44 0 41 1 0 1 1 0 8 0 rtentry 136 116 0 2 4 0 4 4 0 8 0 unpcb 144 77 0 62 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 51 0 47 2 0 2 2 0 8 1 arp 96 19 0 0 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 145 0 138 2 0 2 2 0 8 1 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 112 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 2 0 0 1 0 1 1 0 8 0 pfrule 1344 1 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 458 0 0 29 0 29 29 0 8 0 art_table 40 459 0 0 5 0 5 5 0 8 0 art_node 32 115 0 12 1 0 1 1 0 8 0 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1729 0 221 95 0 95 95 0 8 0 ffsino 256 1730 0 221 95 0 95 95 0 8 0 nchpl 144 2040 0 343 64 0 64 64 0 8 0 vnodes 216 1848 0 0 103 0 103 103 0 8 0 namei 1024 6289 0 6288 2 0 2 2 0 8 1 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 6505 0 6505 3 0 3 3 1 8 3 plimitpl 152 38 0 21 1 0 1 1 0 8 0 sigapl 424 517 0 476 6 0 6 6 0 8 0 knotepl 120 6086 0 6039 8 0 8 8 0 8 6 kqueuepl 184 48 0 39 1 0 1 1 0 8 0 pipepl 304 127 0 100 3 0 3 3 0 8 0 fdescpl 448 502 0 475 5 0 5 5 0 8 1 filepl 120 2109 0 1901 9 0 9 9 0 8 1 lockfpl 104 38 0 35 1 0 1 1 0 8 0 lockfspl 48 17 0 14 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 226 0 215 1 0 1 1 0 8 0 zombiepl 144 480 0 476 1 0 1 1 0 8 0 processpl 1152 517 0 476 4 0 4 4 0 8 0 procpl 664 672 0 628 6 0 6 6 0 8 0 sockpl 552 301 0 276 5 0 5 5 0 8 3 mcl64k 65536 9 0 9 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2579 0 2527 14 0 14 14 0 8 7 mcl2k 2048 326 0 325 2 0 2 2 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 5006 0 4847 13 0 13 13 0 8 1 bufpl 280 2449 0 118 167 0 167 167 0 8 0 anonpl 24 103098 0 98104 32 0 32 32 0 187 0 amapchunkpl 152 10771 0 10208 27 0 27 27 0 158 1 amappl16 200 1701 0 1673 5 0 5 5 0 8 2 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 4 0 4 1 0 1 1 0 8 1 amappl13 176 420 0 419 1 0 1 1 0 8 0 amappl12 168 855 0 819 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 0 1 1 0 8 1 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 0 1 1 0 8 1 amappl8 136 35 0 34 1 0 1 1 0 8 0 amappl7 128 79 0 77 1 0 1 1 0 8 0 amappl6 120 263 0 252 1 0 1 1 0 8 0 amappl5 112 65 0 58 1 0 1 1 0 8 0 amappl4 104 382 0 358 1 0 1 1 0 8 0 amappl3 96 1760 0 1679 3 0 3 3 0 8 0 amappl2 88 628 0 559 2 0 2 2 0 8 0 amappl1 80 9391 0 8868 13 0 13 13 0 8 1 amappl 88 2975 0 2826 5 0 5 5 0 92 0 uvmvnodes 80 1848 0 0 38 0 38 38 0 8 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 6 0 2 1 0 1 1 0 8 0 uaddrrnd 24 502 0 475 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 502 0 475 1 0 1 1 0 8 0 vmmpekpl 168 5867 0 5837 2 0 2 2 0 8 0 vmmpepl 168 39857 0 38186 86 0 86 86 0 357 5 vmsppl 368 501 0 475 4 0 4 4 0 8 1 rwobjpl 40 15765 0 13093 28 0 28 28 0 8 0 pdppl 4096 1010 0 950 96 28 68 82 0 8 8 pvpl 32 242611 0 231544 106 0 106 106 0 265 8 pmappl 216 501 0 475 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 367 0 28 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c9474e8,ffff80003c95d240,ffff80003c95d190) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d240) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d240) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x31c9d6a8130, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c9474e8,ffffffffffffffff,0,a0c7df9f,fffffd806a3ed568,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a3ed568,4,20c7df9f,0,ffff80003c9474e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c9474e8,ffff80003c95d240,ffff80003c95d190) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c95d240) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95d240) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x31c9d6a8130, count: -5