uvm_fault(0xffffffff839b9bc0, 0xffff8000015ca0aa, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *516561 7839 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9539d0,0,ffff80003c953940,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000015f4a00,ffff80003c953a78,ffff80003c9539d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f529400,ffff8000014857c8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014857c8,fffffd806f529400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014857c8,0,ffff80003c953c28,0,0,40a) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bd240,3,ffff80003c953d20,40a,ffff80003c953dc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bd240,ffff80003c953e70,ffff80003c953dc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c953e70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c953e70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa7c688ff310, count: 5 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(0xffffffff839b9bc0, 0xffff8000015ca0aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9539d0,0,ffff80003c953940,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000015f4a00,ffff80003c953a78,ffff80003c9539d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f529400,ffff8000014857c8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014857c8,fffffd806f529400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014857c8,0,ffff80003c953c28,0,0,40a) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bd240,3,ffff80003c953d20,40a,ffff80003c953dc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bd240,ffff80003c953e70,ffff80003c953dc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c953e70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c953e70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa7c688ff310, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c953820 rbx 0xde rdx 0 rcx 0xffff8000015c9fc0 rax 0xfffffd806f5290e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x85d4b907e93efff2 r11 0x8749b60a2ea53364 r12 0x23 r13 0xfffffd806f529000 r14 0xfffffd806c52ebc8 r15 0xffff80000019f058 rip 0xffffffff832c7154 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9537a0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=516561 pid=7839 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7bd770,0xffffffff8395f738 process=0xffff8000ffff9218 user=0xffff80003c94e000, vmspace=0xfffffd806cc3f2f8 estcpu=4, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 28151 381800 1455 0 2 0x4000000 syz-executor 28151 143042 1455 0 3 0x4000080 fsleep syz-executor 28151 495975 1455 0 3 0x4000080 fsleep syz-executor 7839 11690 12761 0 2 0 syz-executor * 7839 516561 12761 0 7 0x4000000 syz-executor 81816 205112 86675 0 3 0x80 nanoslp syz-executor 81816 329157 86675 0 3 0x4000080 netcon syz-executor 81816 156770 86675 0 3 0x4000080 fsleep syz-executor 806 322906 11660 0 3 0x80 nanoslp syz-executor 806 212548 11660 0 3 0x4000080 semwait syz-executor 806 272839 11660 0 3 0x4000080 fsleep syz-executor 31377 508474 35816 60928 3 0x90 nanoslp syz-executor 31377 61928 35816 60928 3 0x4000090 ttyin syz-executor 31377 80825 35816 60928 3 0x4000090 fsleep syz-executor 11660 494573 89315 0 3 0x82 nanoslp syz-executor 33055 403767 89315 0 3 0x82 nanoslp syz-executor 6375 145554 89315 0 3 0x82 wait syz-executor 35816 177066 89315 0 3 0x82 nanoslp syz-executor 12761 490812 89315 0 3 0x82 nanoslp syz-executor 86675 172205 89315 0 3 0x82 nanoslp syz-executor 1455 19087 89315 0 3 0x82 nanoslp syz-executor 24867 312637 89315 0 3 0x82 nanoslp syz-executor 89315 134979 16905 0 3 0x82 kqread syz-executor 16905 353050 60975 0 3 0x10008a sigsusp ksh 60975 183261 23455 0 3 0x98 kqread sshd-session 23455 434938 23730 0 3 0x92 kqread sshd-session 21753 27617 1 0 3 0x100083 ttyin getty 23730 30052 1 0 3 0x88 kqread sshd 35220 135188 77262 73 3 0x1100090 kqread syslogd 77262 184872 1 0 3 0x100082 sbwait syslogd 74561 21868 1 0 3 0x100080 kqread resolvd 62806 407814 7632 77 3 0x100092 kqread dhcpleased 26873 229780 7632 77 3 0x100092 kqread dhcpleased 7632 198645 1 0 3 0x80 kqread dhcpleased 94486 188034 0 0 3 0x14200 bored smr 6323 318122 0 0 2 0x14200 zerothread 41684 479502 0 0 3 0x14200 aiodoned aiodoned 58473 299495 0 0 3 0x14200 syncer update 49993 425285 0 0 3 0x14200 cleaner cleaner 75403 225137 0 0 3 0x14200 reaper reaper 13908 96664 0 0 3 0x14200 pgdaemon pagedaemon 99962 18116 0 0 3 0x14200 bored viomb 33857 43501 0 0 3 0x40014200 acpi0 acpi0 63126 245275 0 0 3 0x14200 bored softnet0 64952 86494 0 0 3 0x14200 bored systqmp 50036 254770 0 0 3 0x14200 bored systq 58302 507918 0 0 3 0x40014200 tmoslp softclock 38275 283997 0 0 3 0x40014200 idle0 1 468111 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 10228 11272K 11717K 166960K 12512 0 pcb 17 12K 12K 166960K 96 0 rtable 204 8K 8K 166960K 430 0 pf 38 14K 17K 166960K 74 0 ifaddr 41 6K 8K 166960K 66 0 ifgroup 59 2K 2K 166960K 95 0 sysctl 3 1K 9K 166960K 8 0 counters 37 18K 18K 166960K 61 0 ioctlops 0 0K 4K 166960K 114 0 iov 0 0K 16K 166960K 21 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1412 89K 89K 166960K 1773 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 47 0 dirhash 36 6K 7K 166960K 114 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 453 0 sigio 0 0K 0K 166960K 6 0 proc 61 59K 100K 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 ip_moptions 0 0K 0K 166960K 62 0 in_multi 78 5K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 211 943K 943K 166960K 211 0 exec 0 0K 1K 166960K 481 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 241 143K 152K 166960K 5513 0 UVM aobj 8 4K 4K 166960K 12 0 pinsyscall 39 78K 94K 166960K 1501 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 23 0 NDP 15 0K 1K 166960K 44 0 temp 43 8663K 8739K 166960K 14855 0 kqueue 13 20K 28K 166960K 84 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 120 122 0 117 1 0 1 1 0 8 0 rtentry 136 117 0 36 4 0 4 4 0 8 0 unpcb 144 241 0 226 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 93 0 84 2 0 2 2 0 8 1 arp 96 18 0 4 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 328 342 0 329 4 0 4 4 0 8 2 ip6q 72 4 0 3 1 0 1 1 0 8 0 ip6af 40 7 0 6 1 0 1 1 0 8 0 nd6 112 24 0 6 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 23 0 20 1 0 1 1 0 8 0 pppxif 1384 3 0 2 1 0 1 1 0 8 0 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 2 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1344 2 0 1 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 502 0 141 29 0 29 29 0 8 4 art_table 40 504 0 141 5 0 5 5 0 8 0 art_node 32 116 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 43 0 35 1 0 1 1 0 8 0 shmpl 112 8 0 4 1 0 1 1 0 8 0 dirhash 1024 53 0 28 4 0 4 4 0 8 0 dino2pl 256 2125 0 625 95 0 95 95 0 8 0 ffsino 256 2125 0 625 95 0 95 95 0 8 0 nchpl 144 2734 0 1043 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 vnodes 216 2506 0 0 140 0 140 140 0 8 0 namei 1024 8865 0 8865 2 0 2 2 0 8 2 vcpupl 3904 1 0 0 1 0 1 1 0 8 0 vmpool 800 1 0 0 1 0 1 1 0 8 0 kstatmem 264 54 0 26 2 0 2 2 0 8 0 scxspl 216 8648 0 8648 8 0 8 8 1 8 8 plimitpl 152 147 0 131 1 0 1 1 0 8 0 sigapl 424 719 0 676 6 0 6 6 0 8 1 knotepl 120 15052 0 15005 9 0 9 9 0 8 6 kqueuepl 184 126 0 116 1 0 1 1 0 8 0 pipepl 304 130 0 103 3 0 3 3 0 8 0 fdescpl 448 706 0 676 5 0 5 5 0 8 1 filepl 120 3594 0 3364 9 0 9 9 0 8 1 lockfpl 104 121 0 119 1 0 1 1 0 8 0 lockfspl 48 56 0 54 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 503 0 491 1 0 1 1 0 8 0 zombiepl 144 679 0 676 1 0 1 1 0 8 0 processpl 1152 719 0 676 4 0 4 4 0 8 0 procpl 664 1190 0 1138 5 0 5 5 0 8 0 sosppl 176 2 0 1 1 0 1 1 0 8 0 sockpl 552 718 0 685 5 0 5 5 0 8 2 mcl64k 65536 26 0 26 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2862 0 2811 14 0 14 14 0 8 7 mcl2k 2048 644 0 635 3 0 3 3 0 8 1 mtagpl 96 55 0 5 2 0 2 2 0 8 0 mbufpl 256 7270 0 7062 14 0 14 14 0 8 0 bufpl 280 2843 0 121 195 0 195 195 0 8 0 anonpl 24 133290 0 130015 45 0 45 45 0 187 21 amapchunkpl 152 17535 0 17011 26 0 26 26 0 158 5 amappl16 200 2311 0 2283 15 4 11 15 0 8 8 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 21 0 20 1 0 1 1 0 8 0 amappl13 176 402 0 401 1 0 1 1 0 8 0 amappl12 168 1058 0 1019 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 0 1 1 0 8 1 amappl10 152 66 0 55 1 0 1 1 0 8 0 amappl9 144 253 0 253 1 0 1 1 0 8 1 amappl8 136 18 0 17 1 0 1 1 0 8 0 amappl7 128 79 0 78 1 0 1 1 0 8 0 amappl6 120 297 0 286 1 0 1 1 0 8 0 amappl5 112 72 0 64 1 0 1 1 0 8 0 amappl4 104 383 0 359 1 0 1 1 0 8 0 amappl3 96 3235 0 3120 4 0 4 4 0 8 1 amappl2 88 512 0 457 2 0 2 2 0 8 0 amappl1 80 9952 0 9401 13 0 13 13 0 8 1 amappl 88 4769 0 4594 5 0 5 5 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 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 7 0 7 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 11 0 4 1 0 1 1 0 8 0 uaddrrnd 24 706 0 676 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 706 0 676 1 0 1 1 0 8 0 vmmpekpl 168 7162 0 7136 2 0 2 2 0 8 0 vmmpepl 168 51311 0 49448 92 0 92 92 0 357 10 vmsppl 368 705 0 676 4 0 4 4 0 8 1 rwobjpl 40 16388 0 15416 13 0 13 13 0 8 2 pdppl 4096 1421 0 1353 95 27 68 81 0 8 0 pvpl 32 327498 0 318082 113 0 113 113 0 265 31 pmappl 216 706 0 676 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 371 0 27 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9539d0,0,ffff80003c953940,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000015f4a00,ffff80003c953a78,ffff80003c9539d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f529400,ffff8000014857c8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014857c8,fffffd806f529400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014857c8,0,ffff80003c953c28,0,0,40a) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bd240,3,ffff80003c953d20,40a,ffff80003c953dc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bd240,ffff80003c953e70,ffff80003c953dc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c953e70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c953e70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa7c688ff310, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806c52ebc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9539d0,0,ffff80003c953940,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000015f4a00,ffff80003c953a78,ffff80003c9539d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f529400,ffff8000014857c8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014857c8,fffffd806f529400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014857c8,0,ffff80003c953c28,0,0,40a) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bd240,3,ffff80003c953d20,40a,ffff80003c953dc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bd240,ffff80003c953e70,ffff80003c953dc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c953e70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c953e70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa7c688ff310, count: -10