uvm_fault(0xfffffd806c03e888, 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 *386944 54659 0 0 0x4000000 0 syz-executor ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c987218,ffff80003c977a20,ffff80003c977970) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c977a20) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x315a7bd47d0, 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(0xfffffd806c03e888, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c987218,ffff80003c977a20,ffff80003c977970) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c977a20) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x315a7bd47d0, count: -5 ddb> show registers rdi 0xffff80003a544000 rsi 0x1aef __ALIGN_SIZE+0xaef rbp 0xffff80003c977740 rbx 0xfffffd807f7d7270 rdx 0xffff80003a544000 rcx 0x1aee __ALIGN_SIZE+0xaee rax 0xffffffff831411e3 ktrops+0x43 r8 0xfffffd806b5920e0 r9 0xfffffd807f7d7270 r10 0xee51f65a03cde554 r11 0x2dd48c394c06f1f1 r12 0xffff80003c987218 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xc0000d06 rip 0xffffffff831411f8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9776c0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=386944 pid=54659 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003391f228,0xffff80003c986558 process=0xffff80002a795e70 user=0xffff80003c972000, vmspace=0xfffffd806c03e888 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 6549 381937 7059 0 2 0 syz-executor 6549 187776 7059 0 3 0x4000080 sbwait syz-executor 6549 424145 7059 0 2 0x4000000 syz-executor 54659 478368 32437 0 2 0 syz-executor *54659 386944 32437 0 7 0x4000000 syz-executor 28849 473612 97368 0 2 0 syz-executor 28849 181564 97368 0 3 0x4000080 fsleep syz-executor 28849 149836 97368 0 3 0x4000080 fsleep syz-executor 28849 436917 97368 0 2 0x4000000 syz-executor 61976 159631 15176 0 2 0 syz-executor 61976 257571 15176 0 3 0x4000080 pipewr syz-executor 61976 461487 15176 0 3 0x4000080 fsleep syz-executor 13803 301389 26555 0 2 0 syz-executor 13803 372178 26555 0 3 0x4000080 fsleep syz-executor 13803 387796 26555 0 3 0x4000080 fsleep syz-executor 71377 202029 47000 0 2 0x2 syz-executor 26555 287626 47000 0 2 0x482 syz-executor 7059 277120 47000 0 3 0x82 nanoslp syz-executor 97368 72284 47000 0 2 0x482 syz-executor 46686 106145 1 0 3 0x100083 ttyopn getty 85628 123082 0 0 3 0x14280 nfsidl nfsio 60035 397502 0 0 3 0x14280 nfsidl nfsio 26490 503866 0 0 3 0x14280 nfsidl nfsio 45838 344741 0 0 3 0x14280 nfsidl nfsio 59664 492092 0 0 3 0x14280 nfsidl nfsio 46449 439328 0 0 3 0x14280 nfsidl nfsio 42756 410242 0 0 3 0x14280 nfsidl nfsio 99596 385776 0 0 3 0x14280 nfsidl nfsio 93628 92382 0 0 3 0x14280 nfsidl nfsio 78184 154383 0 0 3 0x14280 nfsidl nfsio 32727 400813 0 0 3 0x14280 nfsidl nfsio 99677 384032 0 0 3 0x14280 nfsidl nfsio 71754 245557 0 0 3 0x14280 nfsidl nfsio 98066 35920 0 0 3 0x14280 nfsidl nfsio 23627 501192 0 0 3 0x14280 nfsidl nfsio 98483 337510 0 0 3 0x14280 nfsidl nfsio 63395 508531 0 0 3 0x14280 nfsidl nfsio 94147 123486 0 0 3 0x14280 nfsidl nfsio 19289 126431 0 0 3 0x14280 nfsidl nfsio 84917 340611 0 0 3 0x14280 nfsidl nfsio 97708 451473 0 0 3 0x14200 bored sosplice 32437 234553 47000 0 3 0x82 nanoslp syz-executor 80693 295885 47000 0 2 0x2 syz-executor 15176 309071 47000 0 2 0x482 syz-executor 24776 391346 47000 0 3 0x82 wait syz-executor 47000 437351 42249 0 3 0x82 kqread syz-executor 42249 262313 30557 0 3 0x10008a sigsusp ksh 30557 468322 28387 0 3 0x98 kqread sshd-session 28387 201057 9736 0 3 0x92 kqread sshd-session 9736 402461 1 0 3 0x88 kqread sshd 59821 73850 77225 73 3 0x1100090 kqread syslogd 77225 162222 1 0 3 0x100082 sbwait syslogd 14165 49126 1 0 3 0x100080 kqread resolvd 35908 295802 6548 77 3 0x100092 kqread dhcpleased 96665 71173 6548 77 3 0x100092 kqread dhcpleased 6548 137575 1 0 3 0x80 kqread dhcpleased 81075 78419 0 0 3 0x14200 bored smr 27226 228576 0 0 2 0x14200 zerothread 66259 143273 0 0 3 0x14200 aiodoned aiodoned 34957 158360 0 0 3 0x14200 syncer update 67179 449770 0 0 3 0x14200 cleaner cleaner 22848 357628 0 0 3 0x14200 reaper reaper 98938 270378 0 0 3 0x14200 pgdaemon pagedaemon 69393 283881 0 0 3 0x14200 bored viomb 60668 249264 0 0 3 0x40014200 acpi0 acpi0 5003 159727 0 0 3 0x14200 bored softnet3 91779 9029 0 0 3 0x14200 bored softnet2 67125 34063 0 0 3 0x14200 bored softnet1 51215 412674 0 0 3 0x14200 bored softnet0 7940 393806 0 0 3 0x14200 bored systqmp 2340 420346 0 0 3 0x14200 bored systq 12812 124862 0 0 2 0x40014200 softclock 87285 396010 0 0 3 0x40014200 idle0 1 60954 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 11066K 12517K 166960K 13380 0 pcb 17 16K 17K 166960K 281 0 rtable 215 9K 9K 166960K 603 0 pf 36 14K 21K 166960K 150 0 ifaddr 40 7K 8K 166960K 118 0 ifgroup 55 2K 2K 166960K 187 0 sysctl 4 1K 1K 166960K 5 0 counters 31 17K 17K 166960K 104 0 ioctlops 0 0K 4K 166960K 389 0 iov 1 0K 16K 166960K 66 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1492 94K 94K 166960K 2327 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 23 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 55 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 1238 0 sigio 0 0K 0K 166960K 127 0 proc 60 59K 108K 166960K 756 0 subproc 72 4K 4K 166960K 120 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 193 0 in_multi 86 6K 7K 166960K 196 0 ether_multi 1 0K 0K 166960K 15 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 627 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 223 151K 168K 166960K 12492 0 UVM aobj 48 2K 2K 166960K 48 0 pinsyscall 37 74K 94K 166960K 2407 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 88 0 NDP 12 0K 2K 166960K 86 0 temp 75 8680K 8753K 166960K 28929 0 kqueue 16 26K 34K 166960K 254 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 120 177 0 173 3 2 1 3 0 8 0 rtentry 136 187 0 94 4 0 4 4 0 8 0 unpcb 144 842 0 826 10 4 6 6 0 8 5 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpcb 808 320 0 316 7 3 4 4 0 8 3 arp 88 30 0 11 1 0 1 1 0 8 0 ipq 40 6 0 3 1 0 1 1 0 8 0 ipqe 40 11 0 6 1 0 1 1 0 8 0 inpcb 344 1494 0 1483 17 9 8 8 0 8 6 nd6 104 47 0 24 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 59 0 58 2 1 1 1 0 8 0 pppxif 1384 4 0 4 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 2 1 1 1 0 8 0 pfstate 344 2 0 1 2 1 1 1 0 8 0 pfrule 1344 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 749 0 395 31 8 23 29 0 8 0 art_table 32 751 0 395 4 0 4 4 0 8 0 art_node 16 181 0 97 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 49 0 39 1 0 1 1 0 8 0 shmpl 112 45 0 0 2 0 2 2 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3526 0 2018 96 1 95 95 0 8 0 ffsino 248 3527 0 2018 96 1 95 95 0 8 0 nchpl 144 5274 0 3577 63 0 63 63 0 8 0 rtmask 32 10 0 10 3 2 1 1 0 8 1 uvmvnodes 80 4240 0 0 87 0 87 87 0 8 0 vnodes 216 4240 0 0 236 0 236 236 0 8 0 namei 1024 18998 0 18996 1 0 1 1 0 8 0 kstatmem 264 120 0 96 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 15824 0 15824 9 8 1 8 1 8 1 plimitpl 152 394 0 378 1 0 1 1 0 8 0 sigapl 424 1534 0 1469 8 0 8 8 0 8 0 futexpl 64 16471 0 16466 1 0 1 1 0 8 0 knotepl 120 55853 0 55791 29 18 11 16 0 8 8 kqueuepl 184 463 0 451 5 2 3 3 0 8 2 pipepl 296 267 0 239 3 0 3 3 0 8 0 fdescpl 440 1493 0 1465 5 1 4 5 0 8 0 filepl 120 10232 0 10010 18 4 14 14 0 8 4 lockfpl 104 340 0 335 1 0 1 1 0 8 0 lockfspl 48 133 0 128 1 0 1 1 0 8 0 sessionpl 144 30 0 22 1 0 1 1 0 8 0 pgrppl 48 58 0 42 1 0 1 1 0 8 0 ucredpl 104 1538 0 1527 1 0 1 1 0 8 0 zombiepl 144 1640 0 1639 2 1 1 1 0 8 0 processpl 1112 1534 0 1469 5 0 5 5 0 8 0 procpl 656 3181 0 3106 8 0 8 8 0 8 0 sosppl 168 5 0 5 2 1 1 1 0 8 1 sockpl 528 2569 0 2539 18 8 10 11 0 8 7 mcl64k 65536 122 0 122 3 2 1 1 0 8 1 mcl16k 16384 3 0 3 2 2 0 1 0 8 0 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 26 0 25 3 2 1 1 0 8 0 mcl4k 4096 3830 0 3775 16 8 8 16 0 8 0 mcl2k 2048 1356 0 1349 7 3 4 4 0 8 3 mtagpl 96 131 0 60 3 0 3 3 0 8 0 mbufpl 256 21210 0 21015 160 139 21 153 0 8 2 bufpl 280 5304 0 132 370 0 370 370 0 8 0 anonpl 24 187666 0 184207 79 32 47 47 0 187 16 amapchunkpl 152 46019 0 45550 46 11 35 35 0 158 14 amappl16 200 3356 0 3321 46 34 12 15 0 8 8 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 143 0 133 1 0 1 1 0 8 0 amappl13 176 26 0 26 1 1 0 1 0 8 0 amappl12 168 2182 0 2153 2 0 2 2 0 8 0 amappl11 160 58 0 48 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 255 0 254 1 0 1 1 0 8 0 amappl8 136 17 0 15 1 0 1 1 0 8 0 amappl7 128 109 0 98 1 0 1 1 0 8 0 amappl6 120 243 0 240 1 0 1 1 0 8 0 amappl5 112 135 0 128 1 0 1 1 0 8 0 amappl4 104 306 0 290 1 0 1 1 0 8 0 amappl3 96 8304 0 8199 4 0 4 4 0 8 1 amappl2 88 702 0 646 2 0 2 2 0 8 0 amappl1 80 13206 0 12671 14 1 13 13 0 8 1 amappl 88 11546 0 11388 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 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 1 0 1 0 8 0 dma128 128 257 0 257 3 2 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 47 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1493 0 1465 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1493 0 1465 1 0 1 1 0 8 0 vmmpekpl 168 12699 0 12656 4 1 3 3 0 8 0 vmmpepl 168 97400 0 95587 117 21 96 96 0 357 9 vmsppl 360 1492 0 1465 4 1 3 4 0 8 0 rwobjpl 32 29551 0 24416 42 0 42 42 0 8 0 pdppl 4096 2993 0 2930 107 40 67 81 0 8 4 pvpl 32 593131 0 584375 169 53 116 120 0 265 28 pmappl 216 1492 0 1465 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 447 0 212 11 2 9 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c987218,ffff80003c977a20,ffff80003c977970) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c977a20) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x315a7bd47d0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c987218,ffffffffffffffff,0,c0000d06,fffffd806b5920e0,fffffd807f7d7270) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b5920e0,4,40000d06,0,ffff80003c987218) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c987218,ffff80003c977a20,ffff80003c977970) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c977a20) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x315a7bd47d0, count: -5