uvm_fault(0xfffffd806ba58010, 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 * 38512 11261 0 0 0x4000000 0 syz-executor ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a822a78,ffff80003c98f1f0,ffff80003c98f140) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98f1f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98f1f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb266f7bd40, 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(0xfffffd806ba58010, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a822a78,ffff80003c98f1f0,ffff80003c98f140) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98f1f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98f1f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb266f7bd40, count: -5 ddb> show registers rdi 0xffff80003a574000 rsi 0x856 rbp 0xffff80003c98ef10 rbx 0xfffffd8007bfb6e8 rdx 0xffff80003a574000 rcx 0x855 rax 0xffffffff82a2a5c3 ktrops+0x43 r8 0xfffffd80692f7138 r9 0xfffffd8007bfb6e8 r10 0x1ea9cec5143252b5 r11 0xc1df2087eafc4e4f r12 0xffff80002a822a78 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82a2a5d8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c98ee90 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=38512 pid=11261 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=53, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7f94e0,0xffff80003c9a6fc8 process=0xffff80003c9864b0 user=0xffff80003c98a000, vmspace=0xfffffd806ba58010 estcpu=3, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 96872 329812 53330 0 2 0xc80 syz-executor 96872 154952 53330 0 2 0x4000000 syz-executor 96872 322445 53330 0 3 0x4000080 fsleep syz-executor 96872 465514 53330 0 3 0x4000080 fsleep syz-executor 25526 255609 47585 0 2 0 syz-executor 25526 307503 47585 0 2 0x4000000 syz-executor 11261 2122 90517 0 2 0 syz-executor *11261 38512 90517 0 7 0x4000000 syz-executor 59078 224248 63063 0 2 0xc82 syz-executor 90517 211319 63063 0 3 0x82 nanoslp syz-executor 20153 109767 63063 0 2 0x2 syz-executor 53330 96585 63063 0 2 0xc82 syz-executor 25562 484817 63063 0 2 0x2 syz-executor 47585 125256 63063 0 2 0xc82 syz-executor 64124 334728 63063 0 2 0x2 syz-executor 72390 233303 63063 0 2 0x2 syz-executor 63063 202389 35120 0 2 0x2 syz-executor 35120 145931 11120 0 3 0x10008a sigsusp ksh 11120 180099 52879 0 3 0x98 kqread sshd-session 52879 148585 85045 0 3 0x92 kqread sshd-session 55058 415859 1 0 3 0x100083 ttyin getty 85045 108876 1 0 3 0x88 kqread sshd 11306 427352 38038 73 3 0x1100090 kqread syslogd 38038 471225 1 0 3 0x100082 sbwait syslogd 17034 16168 1 0 3 0x100080 kqread resolvd 46787 63873 48717 77 3 0x100092 kqread dhcpleased 35018 104029 48717 77 3 0x100092 kqread dhcpleased 48717 311309 1 0 3 0x80 kqread dhcpleased 97200 50845 0 0 3 0x14200 bored smr 46869 197065 0 0 2 0x14200 zerothread 11502 122789 0 0 3 0x14200 aiodoned aiodoned 90311 500325 0 0 3 0x14200 syncer update 55267 321666 0 0 3 0x14200 cleaner cleaner 14099 456691 0 0 3 0x14200 reaper reaper 95400 355023 0 0 3 0x14200 pgdaemon pagedaemon 47169 193460 0 0 3 0x14200 bored viomb 87863 240315 0 0 3 0x40014200 acpi0 acpi0 58584 295909 0 0 3 0x14200 bored softnet7 79527 450479 0 0 3 0x14200 bored softnet6 21463 377482 0 0 3 0x14200 bored softnet5 23850 347214 0 0 3 0x14200 bored softnet4 36704 334857 0 0 3 0x14200 bored softnet3 63164 170732 0 0 3 0x14200 bored softnet2 80040 131021 0 0 3 0x14200 bored softnet1 7218 39079 0 0 3 0x14200 bored softnet0 7212 178948 0 0 3 0x14200 bored systqmp 34212 142512 0 0 3 0x14200 bored systq 41645 217622 0 0 2 0x40014200 softclock 4659 310779 0 0 3 0x40014200 idle0 1 50019 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 10188 11138K 11173K 166960K 11283 0 pcb 17 12K 12K 166960K 23 0 rtable 207 5K 5K 166960K 259 0 pf 30 12K 13K 166960K 32 0 ifaddr 42 7K 7K 166960K 45 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 33 0 ioctlops 0 0K 2K 166960K 33 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1343 85K 85K 166960K 1367 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 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 14 49K 97K 166960K 147 0 proc 59 59K 124K 166960K 474 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 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 344 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 203 158K 168K 166960K 2823 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 35 70K 96K 166960K 1169 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 11 0K 2K 166960K 28 0 temp 35 8630K 8694K 166960K 3740 0 kqueue 13 20K 26K 166960K 24 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 36 0 33 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 33 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 10 0 6 1 0 1 1 0 8 0 arp 88 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 68 0 60 2 0 2 2 0 8 1 nd6 104 17 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 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 439 0 0 28 0 28 28 0 8 0 art_table 40 440 0 0 5 0 5 5 0 8 0 art_node 32 96 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 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 1571 0 63 95 0 95 95 0 8 0 ffsino 256 1571 0 63 95 0 95 95 0 8 0 nchpl 144 1769 0 87 63 0 63 63 0 8 0 uvmvnodes 80 1661 0 0 34 0 34 34 0 8 0 vnodes 216 1661 0 0 93 0 93 93 0 8 0 namei 1024 5193 0 5190 2 0 2 2 0 8 1 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 6227 0 6227 8 0 8 8 1 8 8 plimitpl 152 27 0 11 1 0 1 1 0 8 0 sigapl 424 428 0 382 7 0 7 7 0 8 1 knotepl 120 4485 0 4438 23 13 10 23 0 8 8 kqueuepl 184 22 0 13 1 0 1 1 0 8 0 pipepl 304 100 0 73 3 0 3 3 0 8 0 fdescpl 448 408 0 382 5 0 5 5 0 8 1 filepl 120 1370 0 1155 7 0 7 7 0 8 0 lockfpl 104 17 0 14 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 31 0 15 1 0 1 1 0 8 0 ucredpl 104 81 0 70 1 0 1 1 0 8 0 zombiepl 144 383 0 382 1 0 1 1 0 8 0 processpl 1168 428 0 382 5 0 5 5 0 8 1 procpl 664 457 0 406 6 0 6 6 0 8 0 sockpl 552 140 0 112 3 0 3 3 0 8 0 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2434 0 2383 14 0 14 14 0 8 6 mcl2k 2048 176 0 174 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3891 0 3736 10 0 10 10 0 8 0 bufpl 280 2822 0 117 194 0 194 194 0 8 0 anonpl 24 98795 0 95953 23 0 23 23 0 187 3 amapchunkpl 152 8164 0 7763 20 0 20 20 0 158 1 amappl16 200 1930 0 1914 5 0 5 5 0 8 3 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 35 0 35 1 0 1 1 0 8 1 amappl12 168 1035 0 1009 3 0 3 3 0 8 1 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 0 1 1 0 8 1 amappl9 144 261 0 261 1 0 1 1 0 8 1 amappl8 136 40 0 39 1 0 1 1 0 8 0 amappl7 128 96 0 86 1 0 1 1 0 8 0 amappl6 120 170 0 167 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 330 0 314 1 0 1 1 0 8 0 amappl3 96 1259 0 1171 3 0 3 3 0 8 0 amappl2 88 606 0 549 2 0 2 2 0 8 0 amappl1 80 7880 0 7352 13 0 13 13 0 8 1 amappl 88 2192 0 2053 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 408 0 382 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 408 0 382 1 0 1 1 0 8 0 vmmpekpl 168 4830 0 4800 2 0 2 2 0 8 0 vmmpepl 168 33001 0 31354 81 0 81 81 0 357 1 vmsppl 368 407 0 382 4 0 4 4 0 8 1 rwobjpl 40 13758 0 11297 26 0 26 26 0 8 0 pdppl 4096 823 0 764 97 20 77 83 0 8 18 pvpl 32 209708 0 202186 69 0 69 69 0 265 0 pmappl 216 407 0 382 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 367 0 20 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a822a78,ffff80003c98f1f0,ffff80003c98f140) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98f1f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98f1f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb266f7bd40, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a822a78,ffffffffffffffff,0,a0c7df9f,fffffd80692f7138,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80692f7138,4,20c7df9f,0,ffff80002a822a78) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a822a78,ffff80003c98f1f0,ffff80003c98f140) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98f1f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98f1f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb266f7bd40, count: -5