uvm_fault(0xfffffd806cb50b90, 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 *271483 8484 0 0x10 0x4000000 0 syz-executor ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80002f8c1ca0,ffff80003c917270,ffff80003c9171c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c917270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x98248493870, 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(0xfffffd806cb50b90, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80002f8c1ca0,ffff80003c917270,ffff80003c9171c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c917270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x98248493870, count: -5 ddb> show registers rdi 0xffff8000338ce000 rsi 0x709 rbp 0xffff80003c916f90 rbx 0xfffffd8007ffd410 rdx 0xffff8000338ce000 rcx 0x708 rax 0xffffffff81145443 ktrops+0x43 r8 0xfffffd8069dee1c0 r9 0xfffffd8007ffd410 r10 0x4e3a0723784b0a2c r11 0x397667f9bcbd68d4 r12 0xffff80002f8c1ca0 r13 0x1 r14 0xffffffffffffffff r15 0xa0001816 rip 0xffffffff81145458 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c916f10 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=271483 pid=8484 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8fb258,0xffff80002f8c1a18 process=0xffff80003c93cda0 user=0xffff80003c912000, vmspace=0xfffffd806cb50b90 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58038 104489 92521 0 3 0x80 nanoslp syz-executor 58038 338145 92521 0 2 0x4000000 syz-executor 58038 486904 92521 0 3 0x4000080 fsleep syz-executor 8484 180539 76855 0 2 0x10 syz-executor * 8484 271483 76855 0 7 0x4000010 syz-executor 23362 61374 26530 0 2 0 syz-executor 23362 403173 26530 0 3 0x4000080 fsleep syz-executor 47281 243562 18152 0 2 0xc80 syz-executor 47281 514760 18152 0 3 0x4000080 sbwait syz-executor 47281 61930 18152 0 3 0x4000080 sbwait syz-executor 92173 374303 26735 0 2 0xc80 syz-executor 92173 118613 26735 0 3 0x4000080 kqread syz-executor 92173 377059 26735 0 3 0x4000080 fsleep syz-executor 93173 199397 0 0 3 0x14280 nfsidl nfsio 42798 270925 0 0 3 0x14280 nfsidl nfsio 35347 23038 0 0 3 0x14280 nfsidl nfsio 36779 21320 0 0 3 0x14280 nfsidl nfsio 24572 82047 0 0 3 0x14280 nfsidl nfsio 41366 418378 0 0 3 0x14280 nfsidl nfsio 86653 310967 0 0 3 0x14280 nfsidl nfsio 80973 378827 0 0 3 0x14280 nfsidl nfsio 33727 35686 0 0 3 0x14280 nfsidl nfsio 9122 445882 0 0 3 0x14280 nfsidl nfsio 22555 180551 0 0 3 0x14280 nfsidl nfsio 97875 158654 0 0 3 0x14280 nfsidl nfsio 76150 492167 0 0 3 0x14280 nfsidl nfsio 75752 178830 0 0 3 0x14280 nfsidl nfsio 88633 276613 0 0 3 0x14280 nfsidl nfsio 1472 145776 0 0 3 0x14280 nfsidl nfsio 69501 56960 0 0 3 0x14280 nfsidl nfsio 5966 297674 0 0 3 0x14280 nfsidl nfsio 51493 356648 0 0 3 0x14280 nfsidl nfsio 82539 80746 0 0 3 0x14280 nfsidl nfsio 66886 193221 40351 60929 3 0x90 nanoslp syz-executor 66886 66935 40351 60929 3 0x4000090 netacc syz-executor 66886 68315 40351 60929 3 0x4000090 fsleep syz-executor 26530 230525 59015 0 2 0xc82 syz-executor 33813 54297 59015 0 2 0x2 syz-executor 92521 423541 59015 0 3 0x82 nanoslp syz-executor 76855 75400 59015 0 3 0x82 nanoslp syz-executor 40351 357498 59015 0 3 0x82 nanoslp syz-executor 85422 131048 59015 0 2 0x2 syz-executor 26735 249278 59015 0 3 0x82 nanoslp syz-executor 18152 123944 59015 0 2 0xc82 syz-executor 59015 123505 98612 0 3 0x82 kqread syz-executor 98612 215908 53347 0 3 0x10008a sigsusp ksh 53347 341034 25138 0 3 0x98 kqread sshd-session 25138 228932 32545 0 3 0x92 kqread sshd-session 88857 376101 1 0 3 0x100083 ttyin getty 32545 494109 1 0 3 0x88 kqread sshd 66257 223744 94755 73 3 0x1100090 kqread syslogd 94755 65472 1 0 3 0x100082 sbwait syslogd 42218 402945 1 0 3 0x100080 kqread resolvd 40887 130744 21820 77 3 0x100092 kqread dhcpleased 78827 85257 21820 77 3 0x100092 kqread dhcpleased 21820 429215 1 0 3 0x80 kqread dhcpleased 86588 476326 0 0 3 0x14200 bored smr 11637 405744 0 0 2 0x14200 zerothread 35322 258770 0 0 3 0x14200 aiodoned aiodoned 537 52283 0 0 3 0x14200 syncer update 87011 403135 0 0 3 0x14200 cleaner cleaner 84311 78645 0 0 3 0x14200 reaper reaper 15598 175116 0 0 3 0x14200 pgdaemon pagedaemon 47536 145666 0 0 3 0x14200 bored viomb 45 328866 0 0 3 0x40014200 acpi0 acpi0 95472 444362 0 0 3 0x14200 bored softnet0 28982 294952 0 0 3 0x14200 bored systqmp 75031 73471 0 0 3 0x14200 bored systq 64967 353291 0 0 3 0x40014200 tmoslp softclock 71806 403044 0 0 3 0x40014200 idle0 1 283928 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 11051 12299K 12495K 166960K 12653 0 pcb 18 12K 12K 166960K 70 0 rtable 212 7K 7K 166960K 423 0 pf 31 13K 15K 166960K 58 0 ifaddr 40 6K 8K 166960K 60 0 ifgroup 51 2K 2K 166960K 86 0 sysctl 4 1K 9K 166960K 13 0 counters 34 17K 18K 166960K 176 0 ioctlops 0 0K 4K 166960K 515 0 iov 0 0K 12K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1391 87K 88K 166960K 1960 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 18 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 409 0 sigio 0 0K 0K 166960K 13 0 proc 60 59K 116K 166960K 511 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 21 0 in_multi 88 6K 7K 166960K 108 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 403 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 214 142K 159K 166960K 5357 0 UVM aobj 13 4K 4K 166960K 13 0 pinsyscall 37 74K 94K 166960K 1510 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 12 0 NDP 12 0K 2K 166960K 37 0 temp 39 9070K 9162K 166960K 16458 0 kqueue 16 24K 28K 166960K 91 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 136 124 0 35 4 0 4 4 0 8 0 unpcb 144 156 0 134 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 140 0 136 7 0 7 7 0 8 6 arp 96 20 0 4 1 0 1 1 0 8 0 ipq 40 8 0 2 1 0 1 1 0 8 0 ipqe 40 107 0 99 1 0 1 1 0 8 0 inpcb 328 336 0 325 7 0 7 7 0 8 6 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 27 0 5 1 0 1 1 0 8 0 pkpcb 40 3 0 2 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 137 0 137 1 0 1 1 0 8 1 pppxif 1416 2 0 2 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 546 0 171 31 0 31 31 0 8 4 art_table 40 548 0 171 5 0 5 5 0 8 0 art_node 32 123 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2116 0 659 92 0 92 92 0 8 0 ffsino 256 2116 0 659 92 0 92 92 0 8 0 nchpl 144 2693 0 999 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 vnodes 216 2629 0 0 147 0 147 147 0 8 0 namei 1024 8813 0 8811 1 0 1 1 0 8 0 kstatmem 264 42 0 18 2 0 2 2 0 8 0 scxspl 216 10833 0 10833 8 0 8 8 1 8 8 plimitpl 152 73 0 57 1 0 1 1 0 8 0 sigapl 424 724 0 663 8 0 8 8 0 8 0 knotepl 120 31910 0 31859 24 0 24 24 0 8 22 kqueuepl 184 103 0 91 1 0 1 1 0 8 0 pipepl 304 140 0 113 3 0 3 3 0 8 0 fdescpl 448 691 0 663 5 0 5 5 0 8 1 filepl 120 3760 0 3531 12 0 12 12 0 8 3 lockfpl 104 161 0 159 1 0 1 1 0 8 0 lockfspl 48 74 0 72 1 0 1 1 0 8 0 sessionpl 144 29 0 21 1 0 1 1 0 8 0 pgrppl 48 41 0 25 1 0 1 1 0 8 0 ucredpl 104 665 0 652 1 0 1 1 0 8 0 zombiepl 144 663 0 663 1 0 1 1 0 8 1 processpl 1152 724 0 663 5 0 5 5 0 8 0 procpl 664 1116 0 1045 7 0 7 7 0 8 0 sockpl 552 555 0 517 8 0 8 8 0 8 5 mcl64k 65536 217 0 216 1 0 1 1 0 8 0 mcl16k 16384 5 0 5 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 2905 0 2849 14 0 14 14 0 8 6 mcl2k2 2112 4 0 4 1 0 1 1 0 8 1 mcl2k 2048 365 0 364 1 0 1 1 0 8 0 mtagpl 96 6 0 5 1 0 1 1 0 8 0 mbufpl 256 7312 0 7129 14 0 14 14 0 8 1 bufpl 280 4981 0 105 349 0 349 349 0 8 0 anonpl 24 131116 0 128019 47 0 47 47 0 187 17 amapchunkpl 152 17077 0 16630 33 0 33 33 0 158 12 amappl16 200 2682 0 2657 19 4 15 15 0 8 11 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 414 0 413 1 0 1 1 0 8 0 amappl13 176 119 0 109 1 0 1 1 0 8 0 amappl12 168 929 0 902 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 61 0 51 1 0 1 1 0 8 0 amappl9 144 252 0 252 1 0 1 1 0 8 1 amappl8 136 111 0 109 1 0 1 1 0 8 0 amappl7 128 144 0 132 1 0 1 1 0 8 0 amappl6 120 161 0 159 1 0 1 1 0 8 0 amappl5 112 99 0 91 1 0 1 1 0 8 0 amappl4 104 259 0 245 1 0 1 1 0 8 0 amappl3 96 3164 0 3061 4 0 4 4 0 8 1 amappl2 88 529 0 473 2 0 2 2 0 8 0 amappl1 80 10556 0 10015 15 0 15 15 0 8 3 amappl 88 4622 0 4470 5 0 5 5 0 92 1 uvmvnodes 80 104 0 0 3 0 3 3 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 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 691 0 663 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 691 0 663 1 0 1 1 0 8 0 vmmpekpl 168 7079 0 7046 2 0 2 2 0 8 0 vmmpepl 168 51588 0 49867 92 0 92 92 0 357 9 vmsppl 368 690 0 663 4 0 4 4 0 8 1 rwobjpl 40 17203 0 16256 13 0 13 13 0 8 0 pdppl 4096 1388 0 1326 98 32 66 80 0 8 4 pvpl 32 324859 0 316444 117 0 117 117 0 265 23 pmappl 216 690 0 663 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 371 0 32 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80002f8c1ca0,ffff80003c917270,ffff80003c9171c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c917270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x98248493870, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f8c1ca0,ffffffffffffffff,0,a0001816,fffffd8069dee1c0,fffffd8007ffd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069dee1c0,4,20001816,ffffffff,ffff80002f8c1ca0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80002f8c1ca0,ffff80003c917270,ffff80003c9171c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c917270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x98248493870, count: -5