uvm_fault(0xfffffd800c2d95d8, 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 *198538 58792 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7ccfa8,ffff800035d135f0,ffff800035d13540) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d135f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d135f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc1bb115b580, 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(0xfffffd800c2d95d8, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7ccfa8,ffff800035d135f0,ffff800035d13540) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d135f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d135f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc1bb115b580, count: -5 ddb> show registers rdi 0xffff80002a7ccfa8 rsi 0xffffffffffffffff rbp 0xffff800035d13310 rbx 0xfffffd8007bfb8f0 rdx 0 rcx 0xa0c7df9b rax 0xffff80002a7ccfa8 r8 0xfffffd806b0cf3a8 r9 0xfffffd8007bfb8f0 r10 0x78c2c4e03bb8ca50 r11 0xbcbe6a7bb9fcf8fe r12 0xffff80002a7ccfa8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9b rip 0xffffffff81fa2b18 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035d13290 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=198538 pid=58792 tcnt=4 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=0xffff80003c94bca8,0xffff80002a7cca88 process=0xffff8000ffff9218 user=0xffff800035d0e000, vmspace=0xfffffd800c2d95d8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58792 239309 19214 0 2 0 syz-executor 58792 383499 19214 0 3 0x4000080 fsleep syz-executor *58792 198538 19214 0 7 0x4000000 syz-executor 58792 175255 19214 0 2 0x4000000 syz-executor 59140 467829 25283 0 2 0 syz-executor 59140 162671 25283 0 3 0x4000080 wsevent_read syz-executor 59140 229926 25283 0 3 0x4000080 fsleep syz-executor 61881 128397 0 0 3 0x14200 acct acct 31365 469872 92681 0 3 0x80 nanoslp syz-executor 31365 80668 92681 0 3 0x4000080 semwait syz-executor 31365 235823 92681 0 3 0x4000080 fsleep syz-executor 19395 343747 88045 0 2 0xc80 syz-executor 19395 333837 88045 0 3 0x4000080 kqpoll syz-executor 19395 343761 88045 0 3 0x4000080 fsleep syz-executor 46787 29696 33750 0 2 0xc80 syz-executor 46787 405001 33750 0 2 0x4000c80 syz-executor 46787 82056 33750 0 3 0x4000080 fsleep syz-executor 46787 83668 33750 0 3 0x4000080 fsleep syz-executor 69905 177073 0 0 3 0x14200 bored sosplice 19214 159462 18726 0 3 0x82 nanoslp syz-executor 25283 344392 18726 0 2 0xc82 syz-executor 87950 432823 18726 0 2 0x2 syz-executor 92681 395634 18726 0 2 0xc82 syz-executor 33750 126972 18726 0 2 0xc82 syz-executor 72374 281008 18726 0 2 0xc82 syz-executor 88045 120543 18726 0 2 0xc82 syz-executor 81722 115181 18726 0 2 0x2 syz-executor 18726 491417 82545 0 3 0x82 kqread syz-executor 82545 225297 14991 0 3 0x10008a sigsusp ksh 14991 295753 12395 0 3 0x98 kqread sshd-session 12395 215795 66894 0 3 0x92 kqread sshd-session 1665 160557 1 0 3 0x100083 ttyin getty 66894 302986 1 0 3 0x88 kqread sshd 86662 282442 44846 73 3 0x1100090 kqread syslogd 44846 257697 1 0 3 0x100082 sbwait syslogd 56778 414448 1 0 3 0x100080 kqread resolvd 68805 210442 97068 77 3 0x100092 kqread dhcpleased 93715 522787 97068 77 3 0x100092 kqread dhcpleased 97068 261475 1 0 3 0x80 kqread dhcpleased 28671 164871 0 0 3 0x14200 bored smr 96611 6527 0 0 2 0x14200 zerothread 41499 391857 0 0 3 0x14200 aiodoned aiodoned 41430 434601 0 0 3 0x14200 syncer update 54680 186481 0 0 3 0x14200 cleaner cleaner 3359 314494 0 0 3 0x14200 reaper reaper 75400 503652 0 0 3 0x14200 pgdaemon pagedaemon 61359 173987 0 0 3 0x14200 bored viomb 8502 363337 0 0 3 0x40014200 acpi0 acpi0 56137 194109 0 0 2 0x14200 softnet0 54361 504877 0 0 3 0x14200 bored systqmp 59018 348143 0 0 3 0x14200 bored systq 97100 62186 0 0 3 0x40014200 tmoslp softclock 34091 204302 0 0 3 0x40014200 idle0 1 239322 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 10181 11130K 12093K 166960K 11877 0 pcb 18 14K 16K 166960K 216 0 rtable 245 8K 8K 166960K 428 0 pf 30 12K 13K 166960K 39 0 ifaddr 40 7K 7K 166960K 49 0 ifgroup 50 2K 2K 166960K 61 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 18K 166960K 40 0 ioctlops 0 0K 4K 166960K 111 0 iov 0 0K 24K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1467 92K 93K 166960K 1584 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 7 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 247 0 sigio 0 0K 0K 166960K 1 0 proc 60 59K 108K 166960K 484 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 14 0 in_multi 89 6K 7K 166960K 104 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 365 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 223 150K 158K 166960K 3978 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 37 74K 92K 166960K 1315 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 31 0 temp 38 8638K 8702K 166960K 5346 0 kqueue 13 20K 34K 166960K 49 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 49 0 46 1 0 1 1 0 8 0 rtentry 136 115 0 9 4 0 4 4 0 8 0 unpcb 144 105 0 90 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 37 0 33 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 287 0 279 7 0 7 7 0 8 6 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 112 25 0 3 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 7 0 7 1 0 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfrule 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 479 0 46 29 0 29 29 0 8 1 art_table 40 482 0 46 5 0 5 5 0 8 0 art_node 32 115 0 18 1 0 1 1 0 8 0 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 112 7 0 2 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1782 0 277 95 0 95 95 0 8 0 ffsino 256 1782 0 277 95 0 95 95 0 8 0 nchpl 144 2150 0 459 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2046 0 0 114 0 114 114 0 8 0 namei 1024 7131 0 7130 2 0 2 2 0 8 1 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 7093 0 7093 8 0 8 8 1 8 8 plimitpl 152 82 0 65 1 0 1 1 0 8 0 sigapl 424 535 0 492 6 0 6 6 0 8 0 knotepl 120 6946 0 6899 10 0 10 10 0 8 7 kqueuepl 184 95 0 84 1 0 1 1 0 8 0 pipepl 304 120 0 93 3 0 3 3 0 8 0 fdescpl 448 520 0 492 5 0 5 5 0 8 1 filepl 120 2633 0 2421 9 0 9 9 0 8 0 lockfpl 104 43 0 39 1 0 1 1 0 8 0 lockfspl 48 22 0 18 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 248 0 236 1 0 1 1 0 8 0 zombiepl 144 493 0 492 1 0 1 1 0 8 0 processpl 1152 535 0 492 4 0 4 4 0 8 0 procpl 664 726 0 671 6 0 6 6 0 8 1 sockpl 552 454 0 428 8 0 8 8 0 8 6 mcl64k 65536 111 0 111 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2599 0 2548 13 0 13 13 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 547 0 545 5 0 5 5 0 8 4 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 5896 0 5742 15 0 15 15 0 8 3 bufpl 280 2473 0 118 169 0 169 169 0 8 0 anonpl 24 104037 0 100994 22 0 22 22 0 187 1 amapchunkpl 152 11499 0 11051 21 0 21 21 0 158 1 amappl16 200 1922 0 1894 5 0 5 5 0 8 3 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 6 0 6 1 0 1 1 0 8 1 amappl13 176 403 0 401 1 0 1 1 0 8 0 amappl12 168 855 0 818 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 42 0 32 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 0 1 1 0 8 1 amappl8 136 24 0 23 1 0 1 1 0 8 0 amappl7 128 75 0 74 1 0 1 1 0 8 0 amappl6 120 265 0 254 1 0 1 1 0 8 0 amappl5 112 87 0 79 1 0 1 1 0 8 0 amappl4 104 398 0 373 1 0 1 1 0 8 0 amappl3 96 1896 0 1815 3 0 3 3 0 8 0 amappl2 88 646 0 579 2 0 2 2 0 8 0 amappl1 80 9210 0 8676 13 0 13 13 0 8 1 amappl 88 3271 0 3117 5 0 5 5 0 92 1 uvmvnodes 80 2046 0 0 42 0 42 42 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 520 0 492 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 520 0 492 1 0 1 1 0 8 0 vmmpekpl 168 5800 0 5771 2 0 2 2 0 8 0 vmmpepl 168 40818 0 39088 81 0 81 81 0 357 1 vmsppl 368 519 0 492 4 0 4 4 0 8 1 rwobjpl 40 16145 0 13270 30 0 30 30 0 8 0 pdppl 4096 1047 0 984 93 26 67 79 0 8 4 pvpl 32 247145 0 237956 89 0 89 89 0 265 6 pmappl 216 519 0 492 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 369 0 26 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7ccfa8,ffff800035d135f0,ffff800035d13540) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d135f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d135f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc1bb115b580, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7ccfa8,ffffffffffffffff,0,a0c7df9b,fffffd806b0cf3a8,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b0cf3a8,4,20c7df9b,0,ffff80002a7ccfa8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7ccfa8,ffff800035d135f0,ffff800035d13540) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d135f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d135f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc1bb115b580, count: -5