uvm_fault(0xfffffd806c9aae70, 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 * 98620 47535 0 0 0x4000000 0 syz-executor ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f0f07e0,ffff80003c939ad0,ffff80003c939a20) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939ad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939ad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5e3de6150a0, 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(0xfffffd806c9aae70, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f0f07e0,ffff80003c939ad0,ffff80003c939a20) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939ad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939ad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5e3de6150a0, count: -5 ddb> show registers rdi 0xffff80003810a000 rsi 0x817 rbp 0xffff80003c9397f0 rbx 0xfffffd8007bfd618 rdx 0xffff80003810a000 rcx 0x816 rax 0xffffffff82c26713 ktrops+0x43 r8 0xfffffd8079935de0 r9 0xfffffd8007bfd618 r10 0x3b3b540a7d3dd9cc r11 0x31a0a0a62ea4d618 r12 0xffff80002f0f07e0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xc0001738 rip 0xffffffff82c26728 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c939770 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=98620 pid=47535 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=0xffff80002f0f0548,0xffff80002f0f1250 process=0xffff8000ffffa898 user=0xffff80003c934000, vmspace=0xfffffd806c9aae70 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 28529 53840 96338 0 2 0 syz-executor 17017 109843 28774 0 2 0 syz-executor 17017 20764 28774 0 2 0x4000000 syz-executor 71014 221640 2672 0 2 0 syz-executor 71014 505117 2672 0 3 0x4000080 fsleep syz-executor 47535 431824 30548 0 2 0 syz-executor *47535 98620 30548 0 7 0x4000000 syz-executor 84840 240392 82759 0 2 0 syz-executor 84840 188282 82759 0 3 0x4000080 kqread syz-executor 84840 455459 82759 0 2 0x4000000 syz-executor 84840 231989 82759 0 3 0x4000080 fsleep syz-executor 69151 235735 0 0 3 0x14200 acct acct 20962 466060 51497 0 2 0x2 syz-executor 40102 78033 51497 0 2 0x2 syz-executor 86571 374433 32587 0 3 0x82 sbwait sshd-session 30548 316087 51497 0 2 0xc82 syz-executor 2672 269766 51497 0 2 0xc82 syz-executor 96338 129104 51497 0 3 0x82 nanoslp syz-executor 75033 173194 51497 0 2 0x2 syz-executor 28774 394975 51497 0 2 0xc82 syz-executor 82759 312315 51497 0 2 0xc82 syz-executor 51497 17286 71545 0 3 0x82 kqread syz-executor 71545 154069 4516 0 3 0x10008a sigsusp ksh 4516 440397 8423 0 3 0x98 kqread sshd-session 8423 84170 32587 0 3 0x92 kqread sshd-session 49094 295928 1 0 3 0x100083 ttyopn getty 32587 416249 1 0 3 0x88 kqread sshd 93353 178139 50631 73 3 0x1100090 kqread syslogd 50631 368993 1 0 3 0x100082 sbwait syslogd 40292 203555 1 0 3 0x100080 kqread resolvd 89862 497541 57651 77 3 0x100092 kqread dhcpleased 26166 11103 57651 77 3 0x100092 kqread dhcpleased 57651 308103 1 0 3 0x80 kqread dhcpleased 7228 111259 0 0 3 0x14200 bored smr 23595 403117 0 0 2 0x14200 zerothread 39060 431370 0 0 3 0x14200 aiodoned aiodoned 2913 197312 0 0 3 0x14200 syncer update 41471 61346 0 0 3 0x14200 cleaner cleaner 7187 464342 0 0 3 0x14200 reaper reaper 19407 240244 0 0 3 0x14200 pgdaemon pagedaemon 63293 253900 0 0 3 0x14200 bored viomb 51745 9092 0 0 3 0x40014200 acpi0 acpi0 81489 130843 0 0 2 0x14200 softnet0 21685 243046 0 0 3 0x14200 bored systqmp 88400 502917 0 0 3 0x14200 bored systq 67570 390334 0 0 3 0x40014200 tmoslp softclock 90042 61573 0 0 3 0x40014200 idle0 1 507690 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 11096 12189K 13826K 166960K 16316 0 pcb 18 20K 26K 166960K 777 0 rtable 245 12K 12K 166960K 789 0 pf 37 14K 16K 166960K 174 0 ifaddr 39 6K 7K 166960K 124 0 ifgroup 55 2K 2K 166960K 207 0 sysctl 4 1K 9K 166960K 27 0 counters 35 18K 18K 166960K 102 0 ioctlops 0 0K 4K 166960K 477 0 iov 0 0K 28K 166960K 169 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1559 98K 98K 166960K 3810 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 56 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 160 0 dirhash 12 2K 3K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 240K 166960K 2238 0 sigio 0 0K 0K 166960K 53 0 proc 61 59K 124K 166960K 751 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 291 0 in_multi 74 5K 7K 166960K 229 0 ether_multi 1 0K 0K 166960K 14 0 mrt 2 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 629 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 70 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 169K 187K 166960K 21343 0 UVM aobj 58 26K 26K 166960K 69 0 pinsyscall 38 76K 96K 166960K 3365 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 150 0 NDP 13 0K 2K 166960K 84 0 temp 83 8680K 8936K 166960K 75821 0 kqueue 14 22K 35K 166960K 429 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 120 372 0 369 5 2 3 3 0 8 2 rtentry 136 192 0 108 4 0 4 4 0 8 0 unpcb 144 2084 0 2067 6 0 6 6 0 8 5 syncache 336 13 0 13 2 1 1 1 0 8 1 tcpqe 32 5 0 5 2 1 1 1 0 8 1 tcpcb 736 1182 0 1105 19 10 9 13 0 8 1 arp 96 26 0 10 1 0 1 1 0 8 0 ipq 40 13 0 7 1 0 1 1 0 8 0 ipqe 40 85 0 78 1 0 1 1 0 8 0 inpcb 328 3022 0 2940 23 13 10 13 0 8 2 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 1 0 1 1 0 8 0 nd6 112 48 0 26 1 0 1 1 0 8 0 pkpcb 40 19 0 19 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 4 0 4 1 0 1 1 0 8 1 ppxss 1072 48 0 48 2 1 1 1 0 8 1 pppxif 1384 4 0 4 2 1 1 1 0 8 1 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pfrktable 1344 4 0 4 1 0 1 1 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 5 0 3 1 0 1 1 0 8 0 pfstate 384 3 0 2 1 0 1 1 0 8 0 pfrule 1360 2 0 2 1 1 0 1 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 6 0 0 6 0 6 6 0 8 0 art_heap4 256 854 0 465 31 5 26 31 0 8 1 art_table 40 860 0 465 5 0 5 5 0 8 0 art_node 32 189 0 114 1 0 1 1 0 8 0 sysvmsgpl 40 54 0 44 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 155 0 145 1 0 1 1 0 8 0 shmpl 112 55 0 9 2 0 2 2 0 8 0 dirhash 1024 45 0 28 3 0 3 3 0 8 0 dino2pl 256 5840 0 4337 95 0 95 95 0 8 0 ffsino 256 5840 0 4337 95 0 95 95 0 8 0 nchpl 144 8924 0 7225 64 0 64 64 0 8 0 rtmask 32 7 0 7 2 1 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 32435 0 32433 3 2 1 2 0 8 0 vcpupl 3904 10 0 1 2 0 2 2 0 8 0 vmpool 808 11 0 2 1 0 1 1 0 8 0 kstatmem 264 122 0 96 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 16 0 16 2 1 1 1 0 8 1 scxspl 216 31358 0 31358 9 7 2 8 1 8 2 plimitpl 152 614 0 598 1 0 1 1 0 8 0 sigapl 424 2512 0 2470 6 0 6 6 0 8 0 knotepl 120 156259 0 156209 56 44 12 30 0 8 7 kqueuepl 184 1042 0 1032 6 2 4 4 0 8 3 pipepl 304 390 0 361 8 0 8 8 0 8 5 fdescpl 448 2489 0 2461 5 1 4 5 0 8 0 filepl 120 19892 0 19538 20 5 15 15 0 8 3 lockfpl 104 1502 0 1433 3 1 2 2 0 8 0 lockfspl 48 489 0 484 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 56 0 39 1 0 1 1 0 8 0 ucredpl 104 3199 0 3187 1 0 1 1 0 8 0 zombiepl 144 2470 0 2470 1 0 1 1 0 8 1 processpl 1152 2512 0 2470 4 0 4 4 0 8 0 procpl 664 5588 0 5540 6 0 6 6 0 8 0 sosppl 176 16 0 16 2 1 1 1 0 8 1 sockpl 552 5743 0 5641 22 10 12 16 0 8 3 mcl64k 65536 105 0 104 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 2 1 1 1 0 8 1 mcl8k 8192 29 0 29 2 1 1 1 0 8 1 mcl4k 4096 5290 0 5230 15 6 9 14 0 8 1 mcl2k2 2112 2 0 2 2 1 1 1 0 8 1 mcl2k 2048 2587 0 2576 5 1 4 4 0 8 2 mtagpl 96 126 0 100 3 1 2 3 0 8 0 mbufpl 256 29176 0 28964 96 69 27 80 0 8 8 bufpl 280 9314 0 3093 445 0 445 445 0 8 0 anonpl 24 316748 0 312781 83 26 57 58 0 187 18 amapchunkpl 152 76198 0 75729 43 9 34 34 0 158 12 amappl16 200 4122 0 4088 32 21 11 15 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 2 0 2 1 1 0 1 0 8 0 amappl13 176 442 0 441 1 0 1 1 0 8 0 amappl12 168 2849 0 2811 2 0 2 2 0 8 0 amappl11 160 9 0 9 1 1 0 1 0 8 0 amappl10 152 46 0 35 1 0 1 1 0 8 0 amappl9 144 274 0 273 2 1 1 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 89 0 87 1 0 1 1 0 8 0 amappl6 120 300 0 287 1 0 1 1 0 8 0 amappl5 112 69 0 59 1 0 1 1 0 8 0 amappl4 104 413 0 389 1 0 1 1 0 8 0 amappl3 96 12988 0 12911 3 0 3 3 0 8 0 amappl2 88 2627 0 2549 2 0 2 2 0 8 0 amappl1 80 18460 0 17840 15 0 15 15 0 8 0 amappl 88 20184 0 20035 5 0 5 5 0 92 0 uvmvnodes 80 170 0 0 4 0 4 4 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 8 0 8 2 1 1 1 0 8 1 dma128 128 260 0 260 2 1 1 1 0 8 1 dma64 64 9 0 9 2 1 1 1 0 8 1 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 68 0 11 2 0 2 2 0 8 0 uaddrrnd 24 2489 0 2461 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2489 0 2461 1 0 1 1 0 8 0 vmmpekpl 168 19651 0 19603 3 0 3 3 0 8 0 vmmpepl 168 155484 0 153656 105 6 99 99 0 357 9 vmsppl 368 2488 0 2461 4 1 3 4 0 8 0 rwobjpl 40 37142 0 35981 15 0 15 15 0 8 0 pdppl 4096 5006 0 4935 128 51 77 82 0 8 6 pvpl 32 1011480 0 1002178 181 46 135 143 0 265 34 pmappl 216 2499 0 2463 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 522 0 152 13 0 13 13 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f0f07e0,ffff80003c939ad0,ffff80003c939a20) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939ad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939ad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5e3de6150a0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f0f07e0,ffffffffffffffff,0,c0001738,fffffd8079935de0,fffffd8007bfd618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8079935de0,4,40001738,0,ffff80002f0f07e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f0f07e0,ffff80003c939ad0,ffff80003c939a20) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939ad0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939ad0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5e3de6150a0, count: -5