uvm_fault(0xffffef006ca9aa20, 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 *313319 32487 0 0 0x4000000 0 syz-executor ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b02b0,ffff80002f0aef70,ffff80002f0aeec0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002f0aef70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f0aef70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xecf872a86f0, 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(0xffffef006ca9aa20, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b02b0,ffff80002f0aef70,ffff80002f0aeec0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002f0aef70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f0aef70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xecf872a86f0, count: -5 ddb> show registers rdi 0xffff80002d0aa000 rsi 0x6b5 rbp 0xffff80002f0aec90 rbx 0xffffef0007ffd7b8 rdx 0xffff80002d0aa000 rcx 0x6b4 rax 0xffffffff82d171c3 ktrops+0x43 r8 0xffffef006adbb570 r9 0xffffef0007ffd7b8 r10 0xf748d8adb9d73e8e r11 0xe0c7386d6f03e753 r12 0xffff80002f0b02b0 r13 0x1 r14 0xffffffffffffffff r15 0xa0001916 rip 0xffffffff82d171d8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002f0aec10 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=313319 pid=32487 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8fb778,0xffff80002f0b14e8 process=0xffff8000ffffa418 user=0xffff80002f0aa000, vmspace=0xffffef006ca9aa20 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 7325 114344 59731 0 2 0 syz-executor 7325 202603 59731 0 3 0x4000080 fsleep syz-executor 32487 39599 5200 0 2 0 syz-executor 32487 92236 5200 0 3 0x4000080 sbwait syz-executor *32487 313319 5200 0 7 0x4000000 syz-executor 91949 370126 35636 0 3 0 vmmaplk syz-executor 91949 384892 35636 0 3 0x4000080 fsleep syz-executor 91949 411643 35636 0 3 0x4000080 fsleep syz-executor 91949 295345 35636 0 2 0x4000000 syz-executor 34528 148433 0 0 3 0x14200 acct acct 65163 145612 24472 0 3 0x82 nanoslp syz-executor 27100 84732 24472 0 2 0x2 syz-executor 59731 210163 24472 0 3 0x82 nanoslp syz-executor 35636 398054 24472 0 3 0x82 nanoslp syz-executor 229 141118 24472 0 2 0x2 syz-executor 78803 301294 24472 0 2 0x2 syz-executor 5200 474638 24472 0 2 0xc82 syz-executor 25042 255786 24472 0 2 0x2 syz-executor 24472 503084 39622 0 2 0x2 syz-executor 39622 328068 59745 0 3 0x10008a sigsusp ksh 59745 83429 82253 0 3 0x98 kqread sshd-session 82253 311936 80068 0 3 0x92 kqread sshd-session 91470 241524 1 0 3 0x100083 ttyin getty 80068 226154 1 0 3 0x88 kqread sshd 74174 273820 4100 73 3 0x1100090 kqread syslogd 4100 271267 1 0 3 0x100082 sbwait syslogd 40213 262923 1 0 3 0x100080 kqread resolvd 69698 113616 97427 77 3 0x100092 kqread dhcpleased 57082 326542 97427 77 3 0x100092 kqread dhcpleased 97427 455363 1 0 3 0x80 kqread dhcpleased 65010 216252 0 0 3 0x14200 bored smr 8473 203860 0 0 2 0x14200 zerothread 4122 18719 0 0 3 0x14200 aiodoned aiodoned 7918 332216 0 0 3 0x14200 syncer update 31070 230728 0 0 3 0x14200 cleaner cleaner 68331 117395 0 0 3 0x14200 reaper reaper 65598 245583 0 0 3 0x14200 pgdaemon pagedaemon 60401 75487 0 0 3 0x14200 bored viomb 91372 396140 0 0 3 0x40014200 acpi0 acpi0 79628 91829 0 0 3 0x14200 bored softnet0 76166 333150 0 0 3 0x14200 bored systqmp 15692 319019 0 0 3 0x14200 bored systq 89100 235135 0 0 2 0x40014200 softclock 18908 448677 0 0 3 0x40014200 idle0 1 273047 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 11040 12232K 12298K 166960K 12483 0 pcb 17 13K 14K 166960K 71 0 rtable 240 7K 7K 166960K 362 0 pf 30 12K 13K 166960K 37 0 ifaddr 42 7K 8K 166960K 49 0 ifgroup 50 2K 2K 166960K 61 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 18K 166960K 40 0 ioctlops 0 0K 4K 166960K 48 0 iov 1 4K 12K 166960K 75 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1293 81K 82K 166960K 1425 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 5 0K 0K 166960K 70 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 236K 166960K 245 0 sigio 0 0K 0K 166960K 1 0 proc 59 59K 124K 166960K 507 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 1 0K 0K 166960K 11 0 in_multi 99 7K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 444 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 198 150K 167K 166960K 3748 0 UVM aobj 70 3K 3K 166960K 71 0 pinsyscall 35 70K 96K 166960K 1342 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 11 0K 2K 166960K 30 0 temp 39 9103K 9108K 166960K 6702 0 kqueue 13 20K 27K 166960K 45 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 42 0 39 1 0 1 1 0 8 0 rtentry 136 113 0 3 4 0 4 4 0 8 0 unpcb 144 87 0 70 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 34 0 29 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 180 0 172 4 0 4 4 0 8 3 nd6 112 24 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 5 0 5 1 0 1 1 0 8 1 pppxif 1416 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 458 0 6 29 0 29 29 0 8 0 art_table 40 459 0 6 5 0 5 5 0 8 0 art_node 32 113 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 0 1 1 0 8 1 semapl 72 68 0 65 1 0 1 1 0 8 0 shmpl 112 68 0 1 2 0 2 2 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1737 0 274 92 0 92 92 0 8 0 ffsino 256 1737 0 274 92 0 92 92 0 8 0 nchpl 144 2075 0 379 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 1863 0 0 104 0 104 104 0 8 0 namei 1024 6426 0 6423 2 0 2 2 0 8 1 kstatmem 264 29 0 6 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7536 0 7536 8 0 8 8 1 8 8 plimitpl 152 52 0 35 1 0 1 1 0 8 0 sigapl 424 530 0 490 6 0 6 6 0 8 1 knotepl 120 5916 0 5869 2 0 2 2 0 8 0 kqueuepl 184 57 0 48 1 0 1 1 0 8 0 pipepl 304 128 0 101 3 0 3 3 0 8 0 fdescpl 448 516 0 490 5 0 5 5 0 8 1 filepl 120 2104 0 1888 11 0 11 11 0 8 4 lockfpl 104 28 0 26 1 0 1 1 0 8 0 lockfspl 48 14 0 12 1 0 1 1 0 8 0 sessionpl 144 93 0 85 1 0 1 1 0 8 0 pgrppl 48 101 0 85 1 0 1 1 0 8 0 ucredpl 104 246 0 235 1 0 1 1 0 8 0 zombiepl 144 491 0 490 1 0 1 1 0 8 0 processpl 1152 530 0 490 4 0 4 4 0 8 0 procpl 664 675 0 629 5 0 5 5 0 8 0 sockpl 552 318 0 290 5 0 5 5 0 8 2 mcl64k 65536 10 0 10 1 0 1 1 0 8 1 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2629 0 2579 15 0 15 15 0 8 8 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 197 0 196 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 5344 0 5176 12 0 12 12 0 8 0 bufpl 280 2566 0 103 176 0 176 176 0 8 0 anonpl 24 90284 0 83729 49 0 49 49 0 186 8 amapchunkpl 152 10794 0 10402 27 0 27 27 0 158 7 amappl16 200 1347 0 1099 14 0 14 14 0 8 0 amappl15 192 54 0 54 1 0 1 1 0 8 1 amappl14 184 408 0 407 1 0 1 1 0 8 0 amappl13 176 135 0 125 1 0 1 1 0 8 0 amappl12 168 752 0 727 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 0 1 1 0 8 1 amappl10 152 57 0 47 1 0 1 1 0 8 0 amappl9 144 273 0 272 1 0 1 1 0 8 0 amappl8 136 98 0 96 1 0 1 1 0 8 0 amappl7 128 165 0 154 1 0 1 1 0 8 0 amappl6 120 146 0 144 1 0 1 1 0 8 0 amappl5 112 92 0 85 1 0 1 1 0 8 0 amappl4 104 345 0 329 1 0 1 1 0 8 0 amappl3 96 2012 0 1922 3 0 3 3 0 8 0 amappl2 88 534 0 480 2 0 2 2 0 8 0 amappl1 80 11083 0 10546 15 0 15 15 0 8 2 amappl 88 3031 0 2896 4 0 4 4 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 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 70 0 1 2 0 2 2 0 8 0 uaddrrnd 24 516 0 490 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 516 0 490 1 0 1 1 0 8 0 vmmpekpl 168 6233 0 6200 2 0 2 2 0 8 0 vmmpepl 168 42810 0 40978 92 0 92 92 0 357 3 vmsppl 368 515 0 490 4 0 4 4 0 8 1 rwobjpl 40 15171 0 13965 13 0 13 13 0 8 0 pdppl 4096 1038 0 980 98 32 66 82 0 8 8 pvpl 32 247676 0 236288 117 0 117 117 0 265 15 pmappl 216 515 0 490 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 363 0 32 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b02b0,ffff80002f0aef70,ffff80002f0aeec0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002f0aef70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f0aef70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xecf872a86f0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b02b0,ffffffffffffffff,0,a0001916,ffffef006adbb570,ffffef0007ffd7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(ffffef006adbb570,4,20001916,ffffffff,ffff80002f0b02b0) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b02b0,ffff80002f0aef70,ffff80002f0aeec0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002f0aef70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002f0aef70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xecf872a86f0, count: -5