uvm_fault(0xfffffd806c0ab5b0, 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 *228493 97715 0 0 0x4000000 0 syz-executor ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c946a68,ffff80003b951460,ffff80003b9513b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b951460) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8fb4bf3e620, 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(0xfffffd806c0ab5b0, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c946a68,ffff80003b951460,ffff80003b9513b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b951460) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8fb4bf3e620, count: -5 ddb> show registers rdi 0xffff800031518000 rsi 0x480a __ALIGN_SIZE+0x380a rbp 0xffff80003b951180 rbx 0xfffffd807f7d7548 rdx 0xffff800031518000 rcx 0x4809 __ALIGN_SIZE+0x3809 rax 0xffffffff81e881a3 ktrops+0x43 r8 0xfffffd806936c570 r9 0xfffffd807f7d7548 r10 0x45a5ae01bbbea238 r11 0x9dea6f2a65346ec7 r12 0xffff80003c946a68 r13 0x1 r14 0xffffffffffffffff r15 0xa0001430 rip 0xffffffff81e881b8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003b951100 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=228493 pid=97715 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=0xffff80003c947738,0xffff80002a7cd218 process=0xffff800035d26b88 user=0xffff80003b94c000, vmspace=0xfffffd806c0ab5b0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15234 257409 28040 0 2 0 syz-executor 97715 5455 9736 0 2 0 syz-executor *97715 228493 9736 0 7 0x4000000 syz-executor 36572 83064 74259 0 2 0 syz-executor 36572 73157 74259 0 2 0x4000000 syz-executor 19986 230435 40787 0 3 0x80 nanoslp syz-executor 19986 421140 40787 0 3 0x4000080 ttyout syz-executor 19986 74266 40787 0 3 0x4000080 fsleep syz-executor 34921 452437 51224 0 3 0x80 nanoslp syz-executor 34921 226323 51224 0 3 0x4000080 netcon syz-executor 86196 80359 0 0 3 0x14200 acct acct 20525 61085 59582 0 2 0x2 syz-executor 28040 324306 59582 0 3 0x82 nanoslp syz-executor 7530 237075 0 0 3 0x14200 bored sosplice 61304 328004 59582 0 2 0x2 syz-executor 40787 399222 59582 0 3 0x82 nanoslp syz-executor 51224 282773 59582 0 3 0x82 nanoslp syz-executor 9736 405257 59582 0 3 0x82 nanoslp syz-executor 74259 300154 59582 0 3 0x82 nanoslp syz-executor 49617 19000 59582 0 2 0x2 syz-executor 59582 398415 6176 0 2 0x2 syz-executor 6176 230628 16859 0 3 0x10008a sigsusp ksh 16859 517087 63911 0 3 0x98 kqread sshd-session 63911 33225 37899 0 3 0x92 kqread sshd-session 46441 347368 1 0 3 0x100083 ttyin getty 37899 409895 1 0 3 0x88 kqread sshd 94136 343474 9743 73 3 0x1100090 kqread syslogd 9743 440751 1 0 3 0x100082 sbwait syslogd 65518 74693 1 0 3 0x100080 kqread resolvd 65662 112391 66869 77 3 0x100092 kqread dhcpleased 89727 407147 66869 77 3 0x100092 kqread dhcpleased 66869 30756 1 0 3 0x80 kqread dhcpleased 49261 449868 0 0 3 0x14200 bored smr 9744 378600 0 0 2 0x14200 zerothread 66248 252357 0 0 3 0x14200 aiodoned aiodoned 26153 218485 0 0 3 0x14200 syncer update 23385 313120 0 0 3 0x14200 cleaner cleaner 43207 8180 0 0 3 0x14200 reaper reaper 61922 441913 0 0 3 0x14200 pgdaemon pagedaemon 10226 169581 0 0 3 0x14200 bored viomb 15647 396480 0 0 3 0x40014200 acpi0 acpi0 73608 246451 0 0 3 0x14200 bored softnet3 47615 85202 0 0 3 0x14200 bored softnet2 1517 183016 0 0 3 0x14200 bored softnet1 34014 160431 0 0 2 0x14200 softnet0 17623 464946 0 0 3 0x14200 bored systqmp 66441 393658 0 0 3 0x14200 bored systq 62774 457067 0 0 3 0x40014200 tmoslp softclock 51609 64777 0 0 3 0x40014200 idle0 1 114609 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 10220 11313K 11816K 166960K 13309 0 pcb 17 16K 17K 166960K 268 0 rtable 205 11K 12K 166960K 636 0 pf 32 13K 21K 166960K 144 0 ifaddr 35 6K 8K 166960K 109 0 ifgroup 50 2K 2K 166960K 187 0 sysctl 4 1K 1K 166960K 4 0 counters 30 17K 18K 166960K 98 0 ioctlops 0 0K 4K 166960K 205 0 iov 0 0K 28K 166960K 141 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1430 90K 91K 166960K 2430 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 103 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 240K 166960K 1154 0 sigio 0 0K 0K 166960K 18 0 proc 60 59K 108K 166960K 631 0 subproc 72 4K 4K 166960K 91 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 225 0 in_multi 73 5K 7K 166960K 160 0 ether_multi 1 0K 0K 166960K 12 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 591 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 187 72K 89K 166960K 11636 0 UVM aobj 89 3K 5K 166960K 94 0 pinsyscall 36 72K 96K 166960K 2202 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 105 0 NDP 11 0K 2K 166960K 73 0 temp 63 8633K 8760K 166960K 23453 0 kqueue 16 26K 30K 166960K 184 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 120 113 0 110 1 0 1 1 0 8 0 rtentry 112 171 0 89 4 0 4 4 0 8 0 unpcb 144 1051 0 1031 11 5 6 6 0 8 5 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 808 422 0 417 12 4 8 8 0 8 7 arp 88 28 0 11 1 0 1 1 0 8 0 ipq 40 6 0 2 1 0 1 1 0 8 0 ipqe 40 13 0 7 1 0 1 1 0 8 0 inpcb 344 1590 0 1579 23 14 9 14 0 8 7 nd6 104 35 0 17 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1072 48 0 48 2 1 1 1 0 8 1 pppxif 1376 11 0 11 2 1 1 1 0 8 1 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 344 2 0 1 1 0 1 1 0 8 0 pfrule 1344 6 0 5 2 1 1 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 690 0 335 30 1 29 30 0 8 3 art_table 32 694 0 335 4 0 4 4 0 8 0 art_node 16 164 0 91 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 13 2 1 1 1 0 8 1 semapl 112 99 0 89 1 0 1 1 0 8 0 shmpl 112 91 0 5 3 0 3 3 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 3505 0 2005 95 0 95 95 0 8 0 ffsino 248 3505 0 2005 95 0 95 95 0 8 0 nchpl 144 5104 0 3424 63 0 63 63 0 8 0 rtmask 32 11 0 11 2 1 1 1 0 8 1 uvmvnodes 80 4206 0 0 86 0 86 86 0 8 0 vnodes 216 4206 0 0 234 0 234 234 0 8 0 namei 1024 18444 0 18442 2 1 1 2 0 8 0 kstatmem 264 106 0 84 2 0 2 2 0 8 0 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 15238 0 15238 11 3 8 8 1 8 8 plimitpl 152 467 0 450 1 0 1 1 0 8 0 sigapl 424 1404 0 1359 7 1 6 7 0 8 0 futexpl 64 16136 0 16135 1 0 1 1 0 8 0 knotepl 120 72902 0 72842 24 14 10 18 0 8 7 kqueuepl 184 413 0 401 4 3 1 4 0 8 0 pipepl 296 486 0 459 10 2 8 8 0 8 5 fdescpl 440 1385 0 1358 5 1 4 5 0 8 0 filepl 120 10600 0 10377 22 7 15 15 0 8 7 lockfpl 104 561 0 558 2 0 2 2 0 8 1 lockfspl 48 205 0 202 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 46 0 30 1 0 1 1 0 8 0 ucredpl 104 1822 0 1811 1 0 1 1 0 8 0 zombiepl 144 1359 0 1359 1 0 1 1 0 8 1 processpl 1112 1404 0 1359 4 0 4 4 0 8 0 procpl 656 2838 0 2788 6 0 6 6 0 8 0 sosppl 168 6 0 6 2 1 1 1 0 8 1 sockpl 528 2808 0 2775 33 22 11 16 0 8 7 mcl64k 65536 11 0 11 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 13 0 13 2 1 1 1 0 8 1 mcl4k 4096 3721 0 3668 17 8 9 15 0 8 2 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 1300 0 1296 2 0 2 2 0 8 1 mtagpl 96 51 0 23 1 0 1 1 0 8 0 mbufpl 256 15846 0 15657 32 10 22 28 0 8 8 bufpl 280 4422 0 142 306 0 306 306 0 8 0 anonpl 24 222001 0 218091 57 7 50 57 0 187 16 amapchunkpl 152 52112 0 51692 49 12 37 37 0 158 16 amappl16 200 4386 0 4352 24 11 13 16 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 20 0 19 1 0 1 1 0 8 0 amappl12 168 2022 0 1996 3 1 2 3 0 8 0 amappl11 160 70 0 60 1 0 1 1 0 8 0 amappl10 152 4 0 3 2 1 1 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 31 0 29 1 0 1 1 0 8 0 amappl7 128 112 0 101 1 0 1 1 0 8 0 amappl6 120 190 0 187 1 0 1 1 0 8 0 amappl5 112 164 0 156 1 0 1 1 0 8 0 amappl4 104 288 0 271 1 0 1 1 0 8 0 amappl3 96 7646 0 7562 4 0 4 4 0 8 0 amappl2 88 651 0 595 2 0 2 2 0 8 0 amappl1 80 10563 0 10054 13 1 12 13 0 8 0 amappl 88 11193 0 11057 5 0 5 5 0 92 0 dma65536 65536 33 0 33 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma16384 16384 1 0 1 1 1 0 1 0 8 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 258 0 258 2 1 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 93 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1385 0 1358 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1385 0 1358 1 0 1 1 0 8 0 vmmpekpl 168 12709 0 12668 3 0 3 3 0 8 0 vmmpepl 168 87858 0 86242 91 2 89 89 0 357 9 vmsppl 360 1384 0 1358 4 1 3 4 0 8 0 rwobjpl 32 28732 0 23622 42 0 42 42 0 8 0 pdppl 4096 2777 0 2716 107 40 67 83 0 8 6 pvpl 32 608090 0 599233 151 28 123 138 0 265 27 pmappl 216 1384 0 1358 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 319 0 73 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c946a68,ffff80003b951460,ffff80003b9513b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b951460) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8fb4bf3e620, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c946a68,ffffffffffffffff,0,a0001430,fffffd806936c570,fffffd807f7d7548) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806936c570,4,20001430,ffffffff,ffff80003c946a68) at doktrace+0x57d sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c946a68,ffff80003b951460,ffff80003b9513b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b951460) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8fb4bf3e620, count: -5