uvm_fault(0xfffffd806ba6d448, 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 *435655 90677 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e42b0,ffff80003c9ad6f0,ffff80003c9ad640) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9ad6f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad6f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x14785c60d40, 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(0xfffffd806ba6d448, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e42b0,ffff80003c9ad6f0,ffff80003c9ad640) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9ad6f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad6f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x14785c60d40, count: -5 ddb> show registers rdi 0xffff80002a7e42b0 rsi 0xffffffffffffffff rbp 0xffff80003c9ad410 rbx 0xfffffd8007bfb820 rdx 0 rcx 0xa0c7df9f rax 0xffff80002a7e42b0 r8 0xfffffd80695ba988 r9 0xfffffd8007bfb820 r10 0x61f54015361a031b r11 0x2ff9f4310d9c91fc r12 0xffff80002a7e42b0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82c79d48 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9ad390 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=435655 pid=90677 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=71, usrpri=71, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7e54a0,0xffff80002a7e4030 process=0xffff80002cd1a8e0 user=0xffff80003c9a8000, vmspace=0xfffffd806ba6d448 estcpu=21, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 98008 103444 73308 0 2 0 syz-executor 98008 49109 73308 0 2 0x4000000 syz-executor 98008 130161 73308 0 2 0x4000000 syz-executor 96031 489764 47617 0 2 0 syz-executor 96031 307618 47617 0 3 0x4000080 fsleep syz-executor 90677 423385 62040 0 2 0 syz-executor *90677 435655 62040 0 7 0x4000000 syz-executor 90677 472089 62040 0 3 0x4000080 fsleep syz-executor 30919 421939 0 0 3 0x14200 acct acct 34002 52183 0 0 3 0x14200 bored sosplice 47617 379026 49960 0 2 0xc82 syz-executor 62040 81354 49960 0 2 0xc82 syz-executor 73308 149675 49960 0 2 0xc82 syz-executor 32530 393594 49960 0 3 0x82 nanoslp syz-executor 33310 57065 49960 0 2 0x2 syz-executor 43895 445351 49960 0 3 0x82 nanoslp syz-executor 28857 35555 49960 0 3 0x82 nanoslp syz-executor 79143 102590 49960 0 2 0x2 syz-executor 49960 411387 61984 0 3 0x82 kqread syz-executor 61984 90594 22077 0 3 0x10008a sigsusp ksh 22077 450645 37708 0 3 0x98 kqread sshd-session 37708 338703 90851 0 3 0x92 kqread sshd-session 3472 278529 1 0 3 0x100083 ttyin getty 90851 187281 1 0 3 0x88 kqread sshd 9804 498672 43007 73 2 0x1100010 syslogd 43007 3016 1 0 3 0x100082 sbwait syslogd 33092 518961 1 0 3 0x100080 kqread resolvd 54202 272933 67916 77 3 0x100092 kqread dhcpleased 45583 465806 67916 77 3 0x100092 kqread dhcpleased 67916 445722 1 0 3 0x80 kqread dhcpleased 42907 471953 0 0 3 0x14200 bored smr 94582 88154 0 0 2 0x14200 zerothread 8199 124877 0 0 3 0x14200 aiodoned aiodoned 14557 441468 0 0 3 0x14200 syncer update 60887 330949 0 0 3 0x14200 cleaner cleaner 70219 395989 0 0 3 0x14200 reaper reaper 43782 25284 0 0 3 0x14200 pgdaemon pagedaemon 26089 380215 0 0 3 0x14200 bored viomb 30929 109063 0 0 3 0x40014200 acpi0 acpi0 64543 206532 0 0 3 0x14200 bored softnet7 46011 453855 0 0 3 0x14200 bored softnet6 95798 403912 0 0 3 0x14200 bored softnet5 94522 62233 0 0 3 0x14200 bored softnet4 92518 114421 0 0 3 0x14200 bored softnet3 84676 98065 0 0 3 0x14200 bored softnet2 80001 484367 0 0 3 0x14200 bored softnet1 10925 195844 0 0 3 0x14200 bored softnet0 3336 90335 0 0 3 0x14200 bored systqmp 72211 359641 0 0 3 0x14200 bored systq 10873 207837 0 0 3 0x40014200 tmoslp softclock 99596 508789 0 0 3 0x40014200 idle0 1 373015 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 10185 11180K 11495K 166960K 11381 0 pcb 17 12K 12K 166960K 94 0 rtable 191 5K 6K 166960K 264 0 pf 31 13K 14K 166960K 41 0 ifaddr 39 6K 7K 166960K 49 0 ifgroup 48 2K 2K 166960K 61 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 18K 166960K 39 0 ioctlops 0 0K 4K 166960K 42 0 iov 0 0K 12K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1418 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 89K 166960K 198 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 100K 166960K 485 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 9 0 in_multi 88 6K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 412 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 151K 166960K 3342 0 UVM aobj 8 2K 2K 166960K 9 0 pinsyscall 37 74K 91K 166960K 1220 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 1K 166960K 31 0 temp 35 8662K 8726K 166960K 8475 0 kqueue 13 20K 30K 166960K 42 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 97 0 11 4 0 4 4 0 8 0 unpcb 144 78 0 63 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 81 0 77 7 0 7 7 0 8 6 arp 88 11 0 1 1 0 1 1 0 8 0 inpcb 328 161 0 154 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 104 16 0 2 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 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 6 0 5 1 0 1 1 0 8 0 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pfstkey 128 1 0 1 1 0 1 1 0 8 1 pfstate 384 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 256 444 0 48 28 0 28 28 0 8 1 art_table 40 445 0 48 5 0 5 5 0 8 0 art_node 32 97 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1678 0 171 95 0 95 95 0 8 0 ffsino 248 1678 0 171 95 0 95 95 0 8 0 nchpl 144 1944 0 260 63 0 63 63 0 8 0 uvmvnodes 80 1799 0 0 37 0 37 37 0 8 0 vnodes 216 1799 0 0 100 0 100 100 0 8 0 namei 1024 5946 0 5946 2 0 2 2 0 8 2 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 6753 0 6753 8 0 8 8 1 8 8 plimitpl 152 35 0 18 1 0 1 1 0 8 0 sigapl 424 481 0 431 7 0 7 7 0 8 1 knotepl 120 5609 0 5562 10 0 10 10 0 8 7 kqueuepl 184 83 0 74 3 0 3 3 0 8 2 pipepl 296 104 0 77 3 0 3 3 0 8 0 fdescpl 440 459 0 431 5 0 5 5 0 8 1 filepl 120 1872 0 1665 10 0 10 10 0 8 2 lockfpl 104 76 0 73 1 0 1 1 0 8 0 lockfspl 48 33 0 30 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 104 127 0 115 1 0 1 1 0 8 0 zombiepl 144 434 0 431 1 0 1 1 0 8 0 processpl 1160 481 0 431 5 0 5 5 0 8 1 procpl 656 597 0 542 6 0 6 6 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 528 348 0 323 8 0 8 8 0 8 6 mcl64k 65536 6 0 6 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2476 0 2426 14 0 14 14 0 8 7 mcl2k 2048 245 0 242 1 0 1 1 0 8 0 mtagpl 96 11 0 5 1 0 1 1 0 8 0 mbufpl 256 4441 0 4296 11 0 11 11 0 8 0 bufpl 280 2970 0 117 204 0 204 204 0 8 0 anonpl 24 102427 0 99370 32 0 32 32 0 187 12 amapchunkpl 152 10001 0 9542 25 0 25 25 0 158 5 amappl16 200 1788 0 1765 5 0 5 5 0 8 3 amappl15 192 11 0 11 1 0 1 1 0 8 1 amappl14 184 108 0 98 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1063 0 1034 3 0 3 3 0 8 1 amappl11 160 59 0 49 1 0 1 1 0 8 0 amappl10 152 18 0 18 1 0 1 1 0 8 1 amappl9 144 247 0 247 1 0 1 1 0 8 1 amappl8 136 26 0 25 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 174 0 170 1 0 1 1 0 8 0 amappl5 112 130 0 124 1 0 1 1 0 8 0 amappl4 104 260 0 244 1 0 1 1 0 8 0 amappl3 96 1593 0 1490 4 0 4 4 0 8 1 amappl2 88 604 0 551 2 0 2 2 0 8 0 amappl1 80 8095 0 7545 13 0 13 13 0 8 1 amappl 88 2699 0 2547 5 0 5 5 0 92 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 8 0 1 1 0 1 1 0 8 0 uaddrrnd 24 459 0 431 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 459 0 431 1 0 1 1 0 8 0 vmmpekpl 168 5188 0 5159 2 0 2 2 0 8 0 vmmpepl 168 35614 0 33829 84 0 84 84 0 357 0 vmsppl 360 458 0 431 4 0 4 4 0 8 1 rwobjpl 32 14242 0 11600 22 0 22 22 0 8 0 pdppl 4096 924 0 862 92 24 68 78 0 8 6 pvpl 32 229261 0 221186 98 0 98 98 0 265 23 pmappl 216 458 0 431 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 261 0 24 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e42b0,ffff80003c9ad6f0,ffff80003c9ad640) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9ad6f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad6f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x14785c60d40, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7e42b0,ffffffffffffffff,0,a0c7df9f,fffffd80695ba988,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80695ba988,4,20c7df9f,0,ffff80002a7e42b0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7e42b0,ffff80003c9ad6f0,ffff80003c9ad640) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9ad6f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad6f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x14785c60d40, count: -5