uvm_fault(0xfffff9006cffb5d0, 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 *485736 59536 0 0 0x4000000 0 syz-executor ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b1240,ffff80003c901d00,ffff80003c901c50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c901d00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c901d00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27b6e21a780, 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(0xfffff9006cffb5d0, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b1240,ffff80003c901d00,ffff80003c901c50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c901d00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c901d00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27b6e21a780, count: -5 ddb> show registers rdi 0xffff80002f0b1240 rsi 0xffffffffffffffff rbp 0xffff80003c901a20 rbx 0xfffff90007ffd888 rdx 0 rcx 0xa0001916 rax 0xffff80002f0b1240 r8 0xfffff900683bbde0 r9 0xfffff90007ffd888 r10 0xf5d3e2099e71d05f r11 0xe3aea74c33e5ecf4 r12 0xffff80002f0b1240 r13 0x1 r14 0xffffffffffffffff r15 0xa0001916 rip 0xffffffff831f4848 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9019a0 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=485736 pid=59536 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=59, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f0b0a78,0xffff80003c8fa2c8 process=0xffff80002a746d08 user=0xffff80003c8fc000, vmspace=0xfffff9006cffb5d0 estcpu=9, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53190 283250 78674 0 2 0 syz-executor 82944 398156 83718 0 2 0 syz-executor 82944 353579 83718 0 3 0x4000080 fsleep syz-executor 28577 130538 59347 0 3 0x80 nanoslp syz-executor 28577 296903 59347 0 3 0x4000088 kqread syz-executor 28577 100436 59347 0 3 0x4000080 fsleep syz-executor 99815 106799 48720 0 3 0x80 nanoslp syz-executor 99815 379489 48720 0 2 0x4000000 syz-executor 99815 166364 48720 0 3 0x4000080 fsleep syz-executor 59536 98469 28361 0 2 0 syz-executor *59536 485736 28361 0 7 0x4000000 syz-executor 59536 406059 28361 0 2 0x4000000 syz-executor 23177 400243 77218 0 2 0x10000082 syz-executor 16908 146514 77218 0 2 0x2 syz-executor 28361 202739 77218 0 3 0x82 nanoslp syz-executor 83718 209198 77218 0 2 0xc82 syz-executor 59347 361901 77218 0 3 0x82 nanoslp syz-executor 68955 284125 77218 0 2 0x2 syz-executor 78674 298500 77218 0 3 0x82 nanoslp syz-executor 48720 233522 77218 0 3 0x82 nanoslp syz-executor 77218 235717 25237 0 3 0x82 kqread syz-executor 25237 293663 56990 0 3 0x10008a sigsusp ksh 56990 219119 61305 0 3 0x98 kqread sshd-session 61305 118844 89474 0 3 0x92 kqread sshd-session 7381 283932 1 0 3 0x100083 ttyin getty 89474 451396 1 0 3 0x88 kqread sshd 22904 291011 35883 73 3 0x1100090 kqread syslogd 35883 433336 1 0 3 0x100082 sbwait syslogd 52824 11123 1 0 3 0x100080 kqread resolvd 72147 468069 14386 77 3 0x100092 kqread dhcpleased 66986 397952 14386 77 3 0x100092 kqread dhcpleased 14386 134577 1 0 3 0x80 kqread dhcpleased 76060 348664 0 0 3 0x14200 bored smr 91060 317439 0 0 2 0x14200 zerothread 66536 228200 0 0 3 0x14200 aiodoned aiodoned 26247 469595 0 0 3 0x14200 syncer update 59786 205169 0 0 3 0x14200 cleaner cleaner 99972 328769 0 0 3 0x14200 reaper reaper 18574 145885 0 0 3 0x14200 pgdaemon pagedaemon 66416 116602 0 0 3 0x14200 bored viomb 15426 418795 0 0 3 0x40014200 acpi0 acpi0 7618 435998 0 0 2 0x14200 softnet0 51223 200091 0 0 3 0x14200 bored systqmp 85272 201059 0 0 3 0x14200 bored systq 79755 403735 0 0 3 0x40014200 tmoslp softclock 58562 293704 0 0 3 0x40014200 idle0 1 523794 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 11027 12102K 12143K 166960K 12125 0 pcb 17 12K 12K 166960K 24 0 rtable 223 6K 6K 166960K 353 0 pf 30 12K 19K 166960K 42 0 ifaddr 40 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 12K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1296 82K 82K 166960K 1363 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 151 0 proc 59 59K 124K 166960K 498 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 89 6K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 37 175K 175K 166960K 37 0 exec 0 0K 2K 166960K 369 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 192 141K 152K 166960K 3090 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 36 72K 98K 166960K 1251 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 11 0K 2K 166960K 27 0 temp 36 9106K 9154K 166960K 4723 0 kqueue 14 22K 26K 166960K 32 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 36 0 33 1 0 1 1 0 8 0 rtentry 136 111 0 8 4 0 4 4 0 8 0 unpcb 144 191 0 176 6 0 6 6 0 8 5 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 13 0 8 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 74 0 66 2 0 2 2 0 8 1 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 112 24 0 3 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 40 29 0 29 29 0 8 2 art_table 40 454 0 40 5 0 5 5 0 8 0 art_node 32 111 0 17 1 0 1 1 0 8 0 semapl 72 3 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1581 0 117 92 0 92 92 0 8 0 ffsino 256 1581 0 117 92 0 92 92 0 8 0 nchpl 144 1809 0 112 64 0 64 64 0 8 0 vnodes 216 1670 0 0 93 0 93 93 0 8 0 namei 1024 5311 0 5310 2 0 2 2 0 8 1 kstatmem 264 23 0 0 2 0 2 2 0 8 0 scxspl 216 6099 0 6099 4 0 4 4 1 8 4 plimitpl 152 35 0 17 1 0 1 1 0 8 0 sigapl 424 446 0 405 6 0 6 6 0 8 1 knotepl 120 3782 0 3734 10 0 10 10 0 8 8 kqueuepl 184 32 0 21 1 0 1 1 0 8 0 pipepl 304 126 0 98 3 0 3 3 0 8 0 fdescpl 448 433 0 406 5 0 5 5 0 8 1 filepl 120 1679 0 1467 11 0 11 11 0 8 2 lockfpl 104 8 0 6 1 0 1 1 0 8 0 lockfspl 48 5 0 3 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 99 0 86 1 0 1 1 0 8 0 zombiepl 144 406 0 405 1 0 1 1 0 8 0 processpl 1152 446 0 405 4 0 4 4 0 8 0 procpl 664 475 0 427 5 0 5 5 0 8 0 sockpl 552 303 0 277 13 3 10 13 0 8 8 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2503 0 2444 13 0 13 13 0 8 5 mcl2k 2048 147 0 146 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4375 0 4215 11 0 11 11 0 8 0 bufpl 272 2283 0 102 146 0 146 146 0 8 0 anonpl 24 89603 0 86711 22 0 22 22 0 187 2 amapchunkpl 152 8331 0 7947 19 0 19 19 0 158 0 amappl16 200 1533 0 1515 5 0 5 5 0 8 3 amappl15 192 12 0 12 1 0 1 1 0 8 1 amappl14 184 414 0 412 1 0 1 1 0 8 0 amappl13 176 124 0 114 1 0 1 1 0 8 0 amappl12 168 664 0 639 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 0 1 1 0 8 1 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 272 0 272 1 0 1 1 0 8 1 amappl8 136 109 0 108 1 0 1 1 0 8 0 amappl7 128 143 0 131 1 0 1 1 0 8 0 amappl6 120 147 0 146 1 0 1 1 0 8 0 amappl5 112 100 0 92 1 0 1 1 0 8 0 amappl4 104 347 0 332 1 0 1 1 0 8 0 amappl3 96 1493 0 1404 3 0 3 3 0 8 0 amappl2 88 518 0 466 2 0 2 2 0 8 0 amappl1 80 10148 0 9609 14 0 14 14 0 8 1 amappl 88 2396 0 2265 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 433 0 406 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 433 0 406 1 0 1 1 0 8 0 vmmpekpl 168 5478 0 5443 2 0 2 2 0 8 0 vmmpepl 168 37202 0 35561 80 0 80 80 0 357 1 vmsppl 368 432 0 406 4 0 4 4 0 8 1 rwobjpl 40 13945 0 13042 11 0 11 11 0 8 0 pdppl 4096 872 0 812 96 28 68 82 0 8 8 pvpl 32 212570 0 204771 73 0 73 73 0 265 1 pmappl 216 432 0 406 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 503 0 28 14 0 14 14 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b1240,ffff80003c901d00,ffff80003c901c50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c901d00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c901d00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27b6e21a780, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80002f0b1240,ffffffffffffffff,0,a0001916,fffff900683bbde0,fffff90007ffd888) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffff900683bbde0,4,20001916,ffffffff,ffff80002f0b1240) at doktrace+0x560 sys/kern/kern_ktrace.c:503 sys_ktrace(ffff80002f0b1240,ffff80003c901d00,ffff80003c901c50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80003c901d00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c901d00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27b6e21a780, count: -5