uvm_fault(0xfffffd806bf37d00, 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 *430755 2913 0 0x1000 0x4080000 0 syz-executor ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800035d34028,ffff80003c957010,ffff80003c956f60) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c957010) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957010) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e7045ae40, 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(0xfffffd806bf37d00, 0xf, 0, 1) -> e ddb> trace ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800035d34028,ffff80003c957010,ffff80003c956f60) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c957010) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957010) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e7045ae40, count: -5 ddb> show registers rdi 0xffff800035d34028 rsi 0xffffffffffffffff rbp 0xffff80003c956d30 rbx 0xfffffd8007bfb6e8 rdx 0 rcx 0xa0c7df9b rax 0xffff800035d34028 r8 0xfffffd80678f9c30 r9 0xfffffd8007bfb6e8 r10 0xfe8dd810344d40d4 r11 0x3204a189bcc177fa r12 0xffff800035d34028 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9b rip 0xffffffff812b9ef8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c956cb0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=430755 pid=2913 tcnt=2 stat=onproc flags process=1000 proc=4080000 runpri=17, usrpri=67, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a7e9730 scnt=1 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a813498,0xffff800035d35748 process=0xffff80002cd20008 user=0xffff80003c952000, vmspace=0xfffffd806bf37d00 estcpu=17, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 17260 289292 39360 0 2 0 syz-executor 2913 473359 13168 0 3 0x3000 suspend syz-executor * 2913 430755 13168 0 7 0x4081000 syz-executor 57901 322702 27326 0 2 0x10 syz-executor 57901 521669 27326 0 2 0x4000010 syz-executor 58021 434419 0 0 3 0x14200 acct acct 56548 414394 90571 0 3 0x80 nanoslp syz-executor 56548 148335 90571 0 3 0x4000080 msgwait syz-executor 56548 481792 90571 0 3 0x4000080 fsleep syz-executor 42721 186474 0 0 3 0x14200 bored sosplice 51757 167392 10301 0 3 0x82 nanoslp syz-executor 39360 99690 10301 0 3 0x82 nanoslp syz-executor 27326 315497 10301 0 3 0x82 nanoslp syz-executor 93197 354319 10301 0 2 0x2 syz-executor 13168 443818 10301 0 3 0x82 nanoslp syz-executor 95538 505648 10301 0 3 0x82 wait syz-executor 11539 427009 10301 0 2 0x2 syz-executor 90571 426464 10301 0 3 0x82 nanoslp syz-executor 10301 415196 36562 0 3 0x82 kqread syz-executor 36562 203264 37035 0 3 0x10008a sigsusp ksh 37035 64796 66229 0 3 0x98 kqread sshd-session 66229 475653 53232 0 3 0x92 kqread sshd-session 12500 349207 1 0 3 0x100083 ttyin getty 53232 183638 1 0 3 0x88 kqread sshd 50371 42789 33476 73 3 0x1100090 kqread syslogd 33476 434004 1 0 3 0x100082 sbwait syslogd 26068 362951 1 0 3 0x100080 kqread resolvd 68593 521730 76930 77 3 0x100092 kqread dhcpleased 57048 96642 76930 77 3 0x100092 kqread dhcpleased 76930 251775 1 0 3 0x80 kqread dhcpleased 59175 165548 0 0 3 0x14200 bored smr 50364 159970 0 0 2 0x14200 zerothread 47180 425420 0 0 3 0x14200 aiodoned aiodoned 65533 74450 0 0 3 0x14200 syncer update 40563 180646 0 0 3 0x14200 cleaner cleaner 71553 283699 0 0 3 0x14200 reaper reaper 74540 154362 0 0 3 0x14200 pgdaemon pagedaemon 67797 186006 0 0 3 0x14200 bored viomb 77298 517103 0 0 3 0x40014200 acpi0 acpi0 73743 380292 0 0 3 0x14200 bored softnet7 2495 239444 0 0 3 0x14200 bored softnet6 49837 179494 0 0 3 0x14200 bored softnet5 48259 514757 0 0 3 0x14200 bored softnet4 74203 338462 0 0 3 0x14200 bored softnet3 89305 510904 0 0 3 0x14200 bored softnet2 33492 452714 0 0 3 0x14200 bored softnet1 17330 305587 0 0 3 0x14200 bored softnet0 25925 506282 0 0 3 0x14200 bored systqmp 14635 469840 0 0 3 0x14200 bored systq 15574 404155 0 0 3 0x40014200 tmoslp softclock 52924 432933 0 0 3 0x40014200 idle0 1 400416 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 10190 11085K 11529K 166960K 11578 0 pcb 17 14K 16K 166960K 67 0 rtable 193 6K 6K 166960K 287 0 pf 32 13K 16K 166960K 59 0 ifaddr 43 7K 8K 166960K 63 0 ifgroup 50 2K 2K 166960K 84 0 sysctl 1 1K 9K 166960K 7 0 counters 32 17K 18K 166960K 114 0 ioctlops 0 0K 4K 166960K 193 0 iov 0 0K 12K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1356 85K 86K 166960K 1536 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 310 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 124K 166960K 481 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 102 7K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 359 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 230 173K 174K 166960K 4332 0 UVM aobj 11 2K 2K 166960K 12 0 pinsyscall 37 74K 96K 166960K 1332 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 18 0 NDP 11 0K 2K 166960K 36 0 temp 41 8663K 8727K 166960K 32393 0 kqueue 13 20K 30K 166960K 64 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 120 114 0 111 3 0 3 3 0 8 2 rtentry 136 106 0 20 4 0 4 4 0 8 0 unpcb 144 194 0 179 4 0 4 4 0 8 3 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 59 0 55 2 0 2 2 0 8 1 arp 88 10 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 359 0 351 12 3 9 12 0 8 8 nd6 104 18 0 0 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 ppxss 1072 76 0 76 1 0 1 1 0 8 1 pppxif 1384 70 0 70 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 70 0 68 1 0 1 1 0 8 0 pfstate 384 35 0 34 1 0 1 1 0 8 0 pfrule 1344 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 513 0 83 29 0 29 29 0 8 1 art_table 40 514 0 83 5 0 5 5 0 8 0 art_node 32 106 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 112 6 0 1 1 0 1 1 0 8 0 shmpl 112 9 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 1901 0 398 95 0 95 95 0 8 0 ffsino 256 1901 0 398 95 0 95 95 0 8 0 nchpl 144 2309 0 628 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 2091 0 0 43 0 43 43 0 8 0 vnodes 216 2091 0 0 117 0 117 117 0 8 0 namei 1024 7098 0 7097 2 0 2 2 0 8 1 kstatmem 264 40 0 18 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 8025 0 8025 8 0 8 8 1 8 8 plimitpl 152 54 0 38 1 0 1 1 0 8 0 sigapl 424 595 0 545 7 0 7 7 0 8 1 knotepl 120 287837 0 287790 16 6 10 16 0 8 8 kqueuepl 184 98 0 89 2 0 2 2 0 8 1 pipepl 304 112 0 85 3 0 3 3 0 8 0 fdescpl 448 571 0 543 5 0 5 5 0 8 1 filepl 120 2637 0 2422 14 0 14 14 0 8 6 lockfpl 104 110 0 107 1 0 1 1 0 8 0 lockfspl 48 54 0 51 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 104 245 0 232 1 0 1 1 0 8 0 zombiepl 144 548 0 545 1 0 1 1 0 8 0 processpl 1168 595 0 545 5 0 5 5 0 8 1 procpl 656 865 0 811 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 552 676 0 650 17 7 10 17 0 8 7 mcl64k 65536 7 0 7 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2634 0 2585 14 0 14 14 0 8 7 mcl2k 2048 412 0 410 3 0 3 3 0 8 2 mtagpl 96 13 0 4 1 0 1 1 0 8 0 mbufpl 256 5735 0 5562 14 0 14 14 0 8 2 bufpl 280 3155 0 117 217 0 217 217 0 8 0 anonpl 24 98513 0 90388 75 0 75 75 0 187 1 amapchunkpl 152 12972 0 12236 30 0 30 30 0 158 0 amappl16 200 1643 0 1386 27 0 27 27 0 8 1 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 123 0 113 1 0 1 1 0 8 0 amappl13 176 98 0 98 1 0 1 1 0 8 1 amappl12 168 1181 0 1153 3 0 3 3 0 8 1 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 6 0 5 1 0 1 1 0 8 0 amappl9 144 253 0 253 1 0 1 1 0 8 1 amappl8 136 38 0 36 1 0 1 1 0 8 0 amappl7 128 92 0 82 1 0 1 1 0 8 0 amappl6 120 181 0 177 1 0 1 1 0 8 0 amappl5 112 179 0 173 1 0 1 1 0 8 0 amappl4 104 267 0 252 1 0 1 1 0 8 0 amappl3 96 2317 0 2216 3 0 3 3 0 8 0 amappl2 88 604 0 548 2 0 2 2 0 8 0 amappl1 80 8498 0 7964 13 0 13 13 0 8 1 amappl 88 3665 0 3501 5 0 5 5 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 6 0 6 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 11 0 1 1 0 1 1 0 8 0 uaddrrnd 24 571 0 543 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 571 0 543 1 0 1 1 0 8 0 vmmpekpl 168 5902 0 5870 2 0 2 2 0 8 0 vmmpepl 168 41604 0 39592 103 0 103 103 0 357 2 vmsppl 368 570 0 543 4 0 4 4 0 8 1 rwobjpl 40 15404 0 12237 34 0 34 34 0 8 0 pdppl 4096 1148 0 1086 96 30 66 82 0 8 4 pvpl 32 254345 0 241344 153 0 153 153 0 265 16 pmappl 216 570 0 543 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 374 0 30 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800035d34028,ffff80003c957010,ffff80003c956f60) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c957010) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957010) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e7045ae40, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800035d34028,ffffffffffffffff,0,a0c7df9b,fffffd80678f9c30,fffffd8007bfb6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80678f9c30,4,20c7df9b,0,ffff800035d34028) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800035d34028,ffff80003c957010,ffff80003c956f60) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c957010) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957010) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87e7045ae40, count: -5