uvm_fault(0xfffffd806c082cb8, 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 * 3891 12643 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f0cf0,ffff800035d13080,ffff800035d12fd0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d13080) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d13080) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x17656f88990, 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(0xfffffd806c082cb8, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f0cf0,ffff800035d13080,ffff800035d12fd0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d13080) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d13080) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x17656f88990, count: -5 ddb> show registers rdi 0xffff80002a7f0cf0 rsi 0xffffffffffffffff rbp 0xffff800035d12da0 rbx 0xfffffd807f7d7888 rdx 0 rcx 0xaf82cb95 rax 0xffff80002a7f0cf0 r8 0xfffffd806ff2d990 r9 0xfffffd807f7d7888 r10 0x2bd73e0afce9980a r11 0xe69b2d722d37fa64 r12 0xffff80002a7f0cf0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xaf82cb95 rip 0xffffffff8283b1d8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035d12d20 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=3891 pid=12643 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=0xffff80002a7f1210,0xffff80002a7f19d0 process=0xffff80003c9bb898 user=0xffff800035d0e000, vmspace=0xfffffd806c082cb8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 81105 61398 80821 0 2 0 syz-executor 81105 480493 80821 0 3 0x4000080 fsleep syz-executor 12643 104871 29147 0 3 0x80 nanoslp syz-executor *12643 3891 29147 0 7 0x4000000 syz-executor 12643 312273 29147 0 3 0x4000080 fsleep syz-executor 13613 269420 68982 0 3 0x80 nanoslp syz-executor 13613 286044 68982 0 3 0x4000080 kqread syz-executor 13613 478934 68982 0 3 0x4000080 fsleep syz-executor 13613 444271 68982 0 3 0x4000080 rest syz-executor 96243 126001 1 0 3 0x100083 ttyin getty 76022 360855 0 0 3 0x14280 nfsidl nfsio 15015 302541 0 0 3 0x14280 nfsidl nfsio 2779 415147 0 0 3 0x14280 nfsidl nfsio 60939 351505 0 0 3 0x14280 nfsidl nfsio 50262 239940 0 0 3 0x14280 nfsidl nfsio 79654 268522 0 0 3 0x14280 nfsidl nfsio 56981 68139 0 0 3 0x14280 nfsidl nfsio 67754 506908 0 0 3 0x14280 nfsidl nfsio 18144 279993 0 0 3 0x14280 nfsidl nfsio 86040 323111 0 0 3 0x14280 nfsidl nfsio 43747 240520 0 0 3 0x14280 nfsidl nfsio 60148 465356 0 0 3 0x14280 nfsidl nfsio 32596 63608 0 0 3 0x14280 nfsidl nfsio 61593 89549 0 0 3 0x14280 nfsidl nfsio 9459 31436 0 0 3 0x14280 nfsidl nfsio 73722 89448 0 0 3 0x14280 nfsidl nfsio 56977 457314 0 0 3 0x14280 nfsidl nfsio 53777 365346 0 0 3 0x14280 nfsidl nfsio 7075 211312 0 0 3 0x14280 nfsidl nfsio 83087 205712 0 0 3 0x14280 nfsidl nfsio 85376 471908 0 0 3 0x14200 bored sosplice 29147 206445 69442 0 2 0x482 syz-executor 68982 275029 69442 0 3 0x82 nanoslp syz-executor 7475 280971 69442 0 2 0x2 syz-executor 6851 126592 69442 0 3 0x82 wait syz-executor 80821 394782 69442 0 2 0x482 syz-executor 89447 30786 69442 0 3 0x82 nanoslp syz-executor 65157 279439 69442 0 3 0x82 wait syz-executor 15935 215938 69442 0 2 0x2 syz-executor 69442 142148 67087 0 2 0x2 syz-executor 67087 166318 79231 0 3 0x10008a sigsusp ksh 79231 49862 86861 0 3 0x98 kqread sshd-session 86861 199117 24356 0 3 0x92 kqread sshd-session 24356 517493 1 0 3 0x88 kqread sshd 83398 346941 42573 73 3 0x1100090 kqread syslogd 42573 59748 1 0 3 0x100082 sbwait syslogd 45870 18208 1 0 3 0x100080 kqread resolvd 75259 428071 36387 77 3 0x100092 kqread dhcpleased 2737 434891 36387 77 3 0x100092 kqread dhcpleased 36387 315325 1 0 3 0x80 kqread dhcpleased 12112 83616 0 0 3 0x14200 bored smr 820 196123 0 0 2 0x14200 zerothread 26110 18828 0 0 3 0x14200 aiodoned aiodoned 58324 393705 0 0 3 0x14200 syncer update 94980 297037 0 0 3 0x14200 cleaner cleaner 14884 172871 0 0 3 0x14200 reaper reaper 86834 493319 0 0 3 0x14200 pgdaemon pagedaemon 44303 61006 0 0 3 0x14200 bored viomb 28827 340693 0 0 3 0x40014200 acpi0 acpi0 30626 249307 0 0 3 0x14200 bored softnet3 36532 440671 0 0 3 0x14200 bored softnet2 40493 87091 0 0 3 0x14200 bored softnet1 94792 8614 0 0 2 0x14200 softnet0 35823 516909 0 0 3 0x14200 bored systqmp 15581 284506 0 0 3 0x14200 bored systq 36668 61229 0 0 2 0x40014200 softclock 14041 99249 0 0 3 0x40014200 idle0 1 277036 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 10179 11044K 11558K 166960K 11824 0 pcb 17 13K 14K 166960K 121 0 rtable 203 7K 7K 166960K 409 0 pf 33 13K 14K 166960K 64 0 ifaddr 37 6K 8K 166960K 63 0 ifgroup 53 2K 2K 166960K 90 0 sysctl 4 1K 1K 166960K 4 0 counters 31 17K 18K 166960K 84 0 ioctlops 0 0K 4K 166960K 111 0 iov 0 0K 17K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1528 96K 97K 166960K 1891 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 77 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 514 0 sigio 0 0K 0K 166960K 10 0 proc 60 59K 124K 166960K 533 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 2 0K 0K 166960K 255 0 in_multi 77 5K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 2 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 514 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 220 160K 171K 166960K 6046 0 UVM aobj 15 2K 2K 166960K 15 0 pinsyscall 37 74K 96K 166960K 1550 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 37 0 NDP 12 0K 2K 166960K 40 0 temp 49 8677K 8751K 166960K 14889 0 kqueue 14 22K 30K 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 65 0 62 1 0 1 1 0 8 0 rtentry 136 125 0 36 4 0 4 4 0 8 0 unpcb 144 590 0 573 4 0 4 4 0 8 3 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpqe 32 7 0 7 1 0 1 1 0 8 1 tcpcb 808 157 0 153 7 0 7 7 0 8 6 arp 88 20 0 4 1 0 1 1 0 8 0 ipq 40 3 0 1 1 0 1 1 0 8 0 ipqe 40 5 0 3 1 0 1 1 0 8 0 inpcb 344 448 0 440 7 0 7 7 0 8 6 nd6 104 28 0 9 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 49 0 48 1 0 1 1 0 8 0 pppxif 1384 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 479 0 115 29 0 29 29 0 8 2 art_table 32 480 0 115 4 0 4 4 0 8 0 art_node 16 122 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semapl 112 75 0 65 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2321 0 825 95 0 95 95 0 8 0 ffsino 248 2321 0 825 95 0 95 95 0 8 0 nchpl 144 3049 0 1364 63 0 63 63 0 8 0 rtmask 32 5 0 5 1 0 1 1 0 8 1 uvmvnodes 80 2752 0 0 57 0 57 57 0 8 0 vnodes 216 2752 0 0 153 0 153 153 0 8 0 namei 1024 10066 0 10066 2 0 2 2 0 8 2 kstatmem 264 48 0 24 3 0 3 3 0 8 1 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 9225 0 9225 3 0 3 3 1 8 3 plimitpl 152 89 0 73 1 0 1 1 0 8 0 sigapl 424 816 0 751 8 0 8 8 0 8 0 futexpl 64 6166 0 6163 1 0 1 1 0 8 0 knotepl 120 33585 0 33537 9 0 9 9 0 8 6 kqueuepl 184 136 0 126 1 0 1 1 0 8 0 pipepl 296 128 0 101 3 0 3 3 0 8 0 fdescpl 440 779 0 751 5 0 5 5 0 8 1 filepl 120 4477 0 4257 13 0 13 13 0 8 4 lockfpl 104 110 0 108 1 0 1 1 0 8 0 lockfspl 48 50 0 48 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 71 0 55 1 0 1 1 0 8 0 ucredpl 104 841 0 829 1 0 1 1 0 8 0 zombiepl 144 754 0 751 1 0 1 1 0 8 0 processpl 1112 816 0 751 5 0 5 5 0 8 0 procpl 656 1425 0 1354 7 0 7 7 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 528 1111 0 1083 7 0 7 7 0 8 5 mcl64k 65536 10 0 9 1 0 1 1 0 8 0 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2898 0 2844 15 0 15 15 0 8 8 mcl2k 2048 529 0 525 3 0 3 3 0 8 2 mtagpl 96 59 0 7 2 0 2 2 0 8 0 mbufpl 256 8043 0 7833 15 0 15 15 0 8 1 bufpl 280 3139 0 121 216 0 216 216 0 8 0 anonpl 24 93459 0 90415 32 0 32 32 0 187 11 amapchunkpl 152 18276 0 17815 25 0 25 25 0 158 5 amappl16 200 951 0 916 3 0 3 3 0 8 0 amappl15 192 1 0 1 1 0 1 1 0 8 1 amappl14 184 101 0 91 1 0 1 1 0 8 0 amappl13 176 1 0 1 1 0 1 1 0 8 1 amappl12 168 1388 0 1360 3 0 3 3 0 8 1 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 0 1 1 0 8 1 amappl9 144 253 0 253 1 0 1 1 0 8 1 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 94 0 84 1 0 1 1 0 8 0 amappl6 120 184 0 181 1 0 1 1 0 8 0 amappl5 112 127 0 121 1 0 1 1 0 8 0 amappl4 104 283 0 267 1 0 1 1 0 8 0 amappl3 96 3687 0 3581 3 0 3 3 0 8 0 amappl2 88 608 0 550 2 0 2 2 0 8 0 amappl1 80 9494 0 8949 14 0 14 14 0 8 2 amappl 88 5313 0 5158 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 7 0 7 1 0 1 1 0 8 1 dma128 128 254 0 254 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 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 779 0 751 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 779 0 751 1 0 1 1 0 8 0 vmmpekpl 168 7613 0 7578 3 0 3 3 0 8 0 vmmpepl 168 52626 0 50828 84 0 84 84 0 357 1 vmsppl 360 778 0 751 4 0 4 4 0 8 1 rwobjpl 32 17361 0 13748 30 0 30 30 0 8 0 pdppl 4096 1564 0 1502 98 32 66 82 0 8 4 pvpl 32 305719 0 297784 101 0 101 101 0 265 26 pmappl 216 778 0 751 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 274 0 32 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f0cf0,ffff800035d13080,ffff800035d12fd0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d13080) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d13080) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x17656f88990, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f0cf0,ffffffffffffffff,0,af82cb95,fffffd806ff2d990,fffffd807f7d7888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806ff2d990,4,af82cb95,0,ffff80002a7f0cf0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f0cf0,ffff800035d13080,ffff800035d12fd0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800035d13080) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d13080) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x17656f88990, count: -5