uvm_fault(0xfffffd807e187e18, 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 *271645 80935 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7d0530,ffffffffffffffff,0,a0c7df9f,fffffd805e4372a0,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7d0530,ffffffffffffffff,0,a0c7df9f,fffffd805e4372a0,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e4372a0,4,20c7df9f,0,ffff80002a7d0530) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e4372a0,4,20c7df9f,0,ffff80002a7d0530) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7d0530,ffff80003a5274b0,ffff80003a527400) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003a5274b0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a5274b0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3719eaebc40, 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(0xfffffd807e187e18, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7d0530,ffffffffffffffff,0,a0c7df9f,fffffd805e4372a0,fffffd8007bfb820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7d0530,ffffffffffffffff,0,a0c7df9f,fffffd805e4372a0,fffffd8007bfb820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e4372a0,4,20c7df9f,0,ffff80002a7d0530) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e4372a0,4,20c7df9f,0,ffff80002a7d0530) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7d0530,ffff80003a5274b0,ffff80003a527400) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003a5274b0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a5274b0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3719eaebc40, count: -5 ddb> show registers rdi 0xffff80002a7d0530 rsi 0xffffffffffffffff rbp 0xffff80003a5271d0 rbx 0xfffffd8007bfb820 rdx 0 rcx 0xa0c7df9f rax 0xffff80002a7d0530 r8 0xfffffd805e4372a0 r9 0xfffffd8007bfb820 r10 0x2c78c072f0496deb r11 0xd15b7bd34366187d r12 0xffff80002a7d0530 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82047328 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a527150 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=271645 pid=80935 tcnt=3 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=0xffff80002a7d0ce0,0xffff80002a7c8548 process=0xffff800035d15fd0 user=0xffff80003a522000, vmspace=0xfffffd807e187e18 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 76791 233775 77279 0 2 0 syz-executor 76791 93572 77279 0 3 0x4000080 fsleep syz-executor 5945 419228 31786 60928 2 0x10 syz-executor 5945 388847 31786 60928 3 0x4000090 fsleep syz-executor 16712 92670 17285 0 2 0x10 syz-executor 16712 79977 17285 0 3 0x4000090 fsleep syz-executor 80935 275985 85759 0 2 0 syz-executor 80935 316068 85759 0 3 0x4000080 msgwait syz-executor *80935 271645 85759 0 7 0x4000000 syz-executor 77021 407942 67490 0 2 0 syz-executor 77021 86738 67490 0 3 0x4000080 ttyout syz-executor 5692 475785 88831 0 2 0 syz-executor 51581 469424 0 0 3 0x14200 acct acct 45465 219820 66653 0 2 0xc80 syz-executor 45465 497907 66653 0 3 0x4000080 msgwait syz-executor 45465 124356 66653 0 3 0x4000080 fsleep syz-executor 66653 167489 50456 0 3 0x82 nanoslp syz-executor 31786 345102 50456 0 2 0xc82 syz-executor 76788 19076 0 0 3 0x14200 bored sosplice 88831 218086 50456 0 3 0x82 nanoslp syz-executor 17285 135087 50456 0 3 0x82 nanoslp syz-executor 67490 371122 50456 0 2 0xc82 syz-executor 14863 424012 50456 0 2 0x10000882 syz-executor 85759 20106 50456 0 3 0x82 nanoslp syz-executor 77279 475006 50456 0 3 0x82 nanoslp syz-executor 50456 134373 4065 0 3 0x82 kqread syz-executor 4065 290841 1 0 3 0x100082 nanoslp ksh 54182 497683 1 0 3 0 biowait sshd 31287 252826 53330 73 3 0x1100090 sbwait syslogd 53330 184476 1 0 2 0x100002 syslogd 87737 344504 1 0 3 0x100080 kqread resolvd 799 472143 63939 77 3 0x100092 kqread dhcpleased 95772 497196 63939 77 3 0x100092 kqread dhcpleased 63939 399204 1 0 2 0 dhcpleased 28585 35193 0 0 3 0x14200 bored smr 28028 426305 0 0 2 0x14200 zerothread 21571 272389 0 0 3 0x14200 aiodoned aiodoned 92346 139911 0 0 3 0x14200 syncer update 83173 279058 0 0 3 0x14200 cleaner cleaner 38803 388179 0 0 3 0x14200 reaper reaper 94002 423557 0 0 3 0x14200 pgdaemon pagedaemon 95658 332546 0 0 3 0x14200 bored viomb 44139 283541 0 0 3 0x40014200 acpi0 acpi0 61862 18777 0 0 3 0x14200 bored softnet3 24101 412369 0 0 3 0x14200 bored softnet2 95921 21949 0 0 3 0x14200 bored softnet1 19142 78948 0 0 3 0x14200 bored softnet0 71903 428253 0 0 3 0x14200 bored systqmp 41647 385237 0 0 3 0x14200 bored systq 44122 302174 0 0 2 0x40014200 softclock 40153 506924 0 0 3 0x40014200 idle0 1 193988 0 0 3 0x2 inode 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 11176K 11720K 166960K 13057 0 pcb 17 15K 17K 166960K 224 0 rtable 225 16K 17K 166960K 812 0 pf 33 13K 17K 166960K 106 0 ifaddr 39 7K 8K 166960K 90 0 ifgroup 46 2K 2K 166960K 131 0 sysctl 3 1K 9K 166960K 17 0 counters 31 17K 18K 166960K 68 0 ioctlops 0 0K 4K 166960K 380 0 iov 0 0K 20K 166960K 39 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1461 92K 92K 166960K 2655 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 34 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 106K 166960K 1030 0 sigio 0 0K 0K 166960K 15 0 proc 51 50K 124K 166960K 654 0 subproc 72 4K 4K 166960K 91 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 92 0 in_multi 88 6K 7K 166960K 159 0 ether_multi 1 0K 0K 166960K 9 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 617 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 202 138K 175K 166960K 10818 0 UVM aobj 95 7K 7K 166960K 97 0 pinsyscall 32 64K 96K 166960K 2184 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 45 0 NDP 10 0K 2K 166960K 57 0 temp 64 8685K 8802K 166960K 48692 0 kqueue 11 16K 30K 166960K 203 0 SYN cache 2 8K 16K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 198 0 194 2 0 2 2 0 8 1 rtentry 136 165 0 69 4 0 4 4 0 8 0 unpcb 144 901 0 888 6 0 6 6 0 8 5 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 292 0 288 7 0 7 7 0 8 6 arp 88 27 0 9 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 328 1190 0 1183 10 0 10 10 0 8 8 ip6q 72 4 0 2 1 0 1 1 0 8 0 ip6af 40 6 0 4 1 0 1 1 0 8 0 nd6 104 33 0 10 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1072 25 0 25 1 0 1 1 0 8 1 pppxif 1384 7 0 7 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 67 0 66 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 8 0 5 1 0 1 1 0 8 0 pfstate 384 4 0 2 1 0 1 1 0 8 0 pfrule 1344 4 0 2 1 0 1 1 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 713 0 300 29 0 29 29 0 8 1 art_table 32 716 0 300 4 0 4 4 0 8 0 art_node 16 162 0 75 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 94 0 2 3 0 3 3 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3354 0 1854 95 0 95 95 0 8 0 ffsino 248 3354 0 1854 95 0 95 95 0 8 0 nchpl 144 4782 0 3087 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 uvmvnodes 80 4284 0 0 88 0 88 88 0 8 0 vnodes 216 4284 0 0 238 0 238 238 0 8 0 namei 1024 17416 0 17415 2 0 2 2 0 8 1 kstatmem 264 74 0 54 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 6 0 6 1 0 1 1 0 8 1 scxspl 216 14819 0 14818 8 0 8 8 1 8 7 plimitpl 152 211 0 196 1 0 1 1 0 8 0 sigapl 424 1326 0 1281 7 0 7 7 0 8 1 knotepl 120 313937 0 313896 23 7 16 17 0 8 14 kqueuepl 184 481 0 473 4 0 4 4 0 8 3 pipepl 296 196 0 169 5 0 5 5 0 8 2 fdescpl 440 1307 0 1281 5 0 5 5 0 8 1 filepl 120 9279 0 9086 14 0 14 14 0 8 5 lockfpl 104 484 0 480 1 0 1 1 0 8 0 lockfspl 48 196 0 192 1 0 1 1 0 8 0 sessionpl 144 29 0 23 1 0 1 1 0 8 0 pgrppl 48 62 0 48 1 0 1 1 0 8 0 ucredpl 104 1569 0 1556 1 0 1 1 0 8 0 zombiepl 144 1282 0 1281 1 0 1 1 0 8 0 processpl 1160 1326 0 1281 4 0 4 4 0 8 0 procpl 656 2660 0 2607 6 0 6 6 0 8 0 sosppl 168 4 0 4 1 0 1 1 0 8 1 sockpl 528 2389 0 2365 18 7 11 16 0 8 8 mcl64k 65536 86 0 86 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 16 0 16 1 0 1 1 0 8 1 mcl4k 4096 3621 0 3570 15 0 15 15 0 8 8 mcl2k 2048 1132 0 1127 3 0 3 3 0 8 1 mtagpl 96 112 0 11 3 0 3 3 0 8 0 mbufpl 256 14181 0 13941 46 16 30 45 0 8 8 bufpl 280 4447 0 124 309 0 309 309 0 8 0 anonpl 24 164404 0 156655 86 0 86 86 0 187 8 amapchunkpl 152 34074 0 33576 32 0 32 32 0 158 8 amappl16 200 2771 0 2507 29 0 29 29 0 8 2 amappl15 192 83 0 83 1 0 1 1 0 8 1 amappl14 184 119 0 112 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 0 1 1 0 8 1 amappl12 168 1982 0 1957 3 0 3 3 0 8 1 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 0 1 1 0 8 1 amappl9 144 275 0