uvm_fault(0xffffffff83a35190, 0xffff8000016100ca, 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 *492479 35252 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4df670,0,ffff80003a4df5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fe200,ffff80003a4df718,ffff80003a4df670,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dd29100,ffff800010fe08b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe08b0,fffffd806dd29100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe08b0,0,ffff80003a4df8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c0018,4,ffff80003a4df9c0,808,ffff80003a4dfa60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c0018,ffff80003a4dfb10,ffff80003a4dfa60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4dfb10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4dfb10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa18102e3630, 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(0xffffffff83a35190, 0xffff8000016100ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4df670,0,ffff80003a4df5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fe200,ffff80003a4df718,ffff80003a4df670,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dd29100,ffff800010fe08b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe08b0,fffffd806dd29100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe08b0,0,ffff80003a4df8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c0018,4,ffff80003a4df9c0,808,ffff80003a4dfa60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c0018,ffff80003a4dfb10,ffff80003a4dfa60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4dfb10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4dfb10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa18102e3630, count: -10 ddb> show registers rdi 0xffff80002ccba000 rsi 0xb94 rbp 0xffff80003a4df4c0 rbx 0xde rdx 0xffff80002ccba000 rcx 0xffff80000160ffe0 rax 0xfffffd806dd299e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xa5dcaa24096ae432 r11 0xb32642d1152b7ae3 r12 0x17 r13 0xfffffd806dd29900 r14 0xfffffd806c949810 r15 0xffff8000002a2058 rip 0xffffffff81efa354 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a4df440 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=492479 pid=35252 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f0c14d8,0xffff80002f0c0558 process=0xffff8000ffff9218 user=0xffff80003a4da000, vmspace=0xfffffd80785a9cf8 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15203 516945 54533 0 2 0 syz-executor 15203 303423 54533 0 3 0x4000080 fsleep syz-executor 35252 251305 10802 0 2 0 syz-executor *35252 492479 10802 0 7 0x4000000 syz-executor 99245 117308 119 0 2 0 syz-executor 99245 331690 119 0 3 0x4000080 fsleep syz-executor 99245 348801 119 0 3 0x4000080 fsleep syz-executor 65306 323401 15051 0 2 0 syz-executor 65306 270137 15051 0 3 0x4000080 fsleep syz-executor 28450 424678 15571 0 2 0 syz-executor 28450 291670 15571 0 3 0x4000080 fsleep syz-executor 28450 435244 15571 0 3 0x4000080 fsleep syz-executor 64006 504797 36669 0 2 0 syz-executor 64006 339644 36669 0 3 0x4000080 fsleep syz-executor 99459 157367 47726 0 2 0x2 syz-executor 15571 479352 47726 0 2 0xc82 syz-executor 36669 340911 47726 0 2 0xc82 syz-executor 119 424051 47726 0 3 0x82 nanoslp syz-executor 15051 348426 47726 0 2 0xc82 syz-executor 9073 380473 47726 0 2 0x2 syz-executor 10802 294590 47726 0 3 0x82 nanoslp syz-executor 54533 55253 47726 0 3 0x82 nanoslp syz-executor 47726 29117 6072 0 3 0x82 kqread syz-executor 6072 412294 89689 0 3 0x10008a sigsusp ksh 89689 79764 98331 0 3 0x98 kqread sshd-session 98331 508750 51014 0 3 0x92 kqread sshd-session 5143 523802 1 0 3 0x100083 ttyin getty 51014 240176 1 0 3 0x88 kqread sshd 75873 272324 45633 73 3 0x1100090 kqread syslogd 45633 137491 1 0 3 0x100082 sbwait syslogd 94985 426315 1 0 3 0x100080 kqread resolvd 21663 243973 54131 77 3 0x100092 kqread dhcpleased 25273 423045 54131 77 3 0x100092 kqread dhcpleased 54131 472873 1 0 3 0x80 kqread dhcpleased 24948 262439 0 0 3 0x14200 bored smr 29215 265142 0 0 2 0x14200 zerothread 62029 269142 0 0 3 0x14200 aiodoned aiodoned 56261 292143 0 0 3 0x14200 syncer update 62939 338707 0 0 3 0x14200 cleaner cleaner 55144 22915 0 0 3 0x14200 reaper reaper 15325 234994 0 0 3 0x14200 pgdaemon pagedaemon 97019 251528 0 0 3 0x14200 bored viomb 12676 411046 0 0 3 0x40014200 acpi0 acpi0 77166 82397 0 0 2 0x14200 softnet0 77763 190178 0 0 3 0x14200 bored systqmp 30879 129959 0 0 3 0x14200 bored systq 5548 167215 0 0 3 0x40014200 tmoslp softclock 35634 252653 0 0 3 0x40014200 idle0 1 329738 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 11026 12100K 12361K 166960K 12157 0 pcb 19 12K 12K 166960K 20 0 rtable 228 8K 8K 166960K 377 0 pf 28 12K 13K 166960K 32 0 ifaddr 38 6K 7K 166960K 45 0 ifgroup 46 2K 2K 166960K 52 0 sysctl 3 1K 9K 166960K 7 0 counters 32 17K 18K 166960K 36 0 ioctlops 0 0K 2K 166960K 39 0 iov 0 0K 0K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1293 81K 82K 166960K 1377 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 3 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 166 0 proc 59 59K 91K 166960K 503 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 2 0 in_multi 88 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 31 148K 148K 166960K 31 0 exec 0 0K 1K 166960K 373 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 208 134K 152K 166960K 3264 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 94K 166960K 1267 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 24 1K 2K 166960K 28 0 temp 36 9062K 9126K 166960K 3949 0 kqueue 13 20K 26K 166960K 28 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 41 0 36 1 0 1 1 0 8 0 rtentry 136 112 0 12 4 0 4 4 0 8 0 unpcb 144 182 0 165 1 0 1 1 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 20 0 15 1 0 1 1 0 8 0 arp 96 18 0 2 1 0 1 1 0 8 0 inpcb 328 78 0 69 2 1 1 2 0 8 0 nd6 112 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 452 0 44 29 0 29 29 0 8 2 art_table 40 454 0 44 5 0 5 5 0 8 0 art_node 32 112 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 2 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1603 0 145 92 0 92 92 0 8 0 ffsino 256 1603 0 145 92 0 92 92 0 8 0 nchpl 144 1836 0 151 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 vnodes 216 1700 0 0 95 0 95 95 0 8 0 namei 1024 5358 0 5357 2 1 1 2 0 8 0 kstatmem 264 24 0 4 2 0 2 2 0 8 0 scxspl 216 5989 0 5989 3 2 1 3 1 8 1 plimitpl 152 127 0 111 1 0 1 1 0 8 0 sigapl 424 461 0 420 6 1 5 6 0 8 0 knotepl 120 3480 0 3433 2 0 2 2 0 8 0 kqueuepl 184 33 0 23 1 0 1 1 0 8 0 pipepl 304 123 0 95 3 0 3 3 0 8 0 fdescpl 448 448 0 420 5 1 4 5 0 8 0 filepl 120 1614 0 1400 7 0 7 7 0 8 0 lockfpl 104 25 0 22 1 0 1 1 0 8 0 lockfspl 48 12 0 9 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 78 0 67 1 0 1 1 0 8 0 zombiepl 144 427 0 427 2 1 1 1 0 8 1 processpl 1152 461 0 420 4 0 4 4 0 8 0 procpl 664 510 0 461 5 0 5 5 0 8 0 sockpl 552 302 0 270 3 0 3 3 0 8 0 mcl64k 65536 2 0 2 1 1 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 6 0 6 1 1 0 1 0 8 0 mcl4k 4096 2533 0 2478 15 8 7 15 0 8 0 mcl2k 2048 141 0 141 3 2 1 2 0 8 1 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 4445 0 4314 9 0 9 9 0 8 0 bufpl 280 2257 0 102 154 0 154 154 0 8 0 anonpl 24 93357 0 90332 22 1 21 22 0 187 0 amapchunkpl 152 8926 0 8499 20 1 19 19 0 158 0 amappl16 200 1583 0 1562 5 3 2 5 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 410 0 409 1 0 1 1 0 8 0 amappl13 176 115 0 104 1 0 1 1 0 8 0 amappl12 168 732 0 705 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 72 0 62 1 0 1 1 0 8 0 amappl9 144 264 0 264 1 1 0 1 0 8 0 amappl8 136 100 0 99 1 0 1 1 0 8 0 amappl7 128 146 0 135 1 0 1 1 0 8 0 amappl6 120 173 0 171 1 0 1 1 0 8 0 amappl5 112 91 0 83 1 0 1 1 0 8 0 amappl4 104 255 0 241 1 0 1 1 0 8 0 amappl3 96 1586 0 1488 3 0 3 3 0 8 0 amappl2 88 515 0 460 2 0 2 2 0 8 0 amappl1 80 9576 0 9036 15 1 14 15 0 8 0 amappl 88 2564 0 2417 4 0 4 4 0 92 0 uvmvnodes 80 95 0 0 2 0 2 2 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 448 0 420 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 448 0 420 1 0 1 1 0 8 0 vmmpekpl 168 5516 0 5477 2 0 2 2 0 8 0 vmmpepl 168 37308 0 35612 89 10 79 89 0 357 0 vmsppl 368 447 0 420 4 1 3 4 0 8 0 rwobjpl 40 13703 0 12792 12 0 12 12 0 8 0 pdppl 4096 902 0 840 94 28 66 80 0 8 4 pvpl 32 219445 0 211291 81 6 75 81 0 265 0 pmappl 216 447 0 420 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 358 0 47 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4df670,0,ffff80003a4df5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fe200,ffff80003a4df718,ffff80003a4df670,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dd29100,ffff800010fe08b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe08b0,fffffd806dd29100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe08b0,0,ffff80003a4df8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c0018,4,ffff80003a4df9c0,808,ffff80003a4dfa60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c0018,ffff80003a4dfb10,ffff80003a4dfa60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4dfb10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4dfb10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa18102e3630, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c949810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4df670,0,ffff80003a4df5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fe200,ffff80003a4df718,ffff80003a4df670,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dd29100,ffff800010fe08b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe08b0,fffffd806dd29100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe08b0,0,ffff80003a4df8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c0018,4,ffff80003a4df9c0,808,ffff80003a4dfa60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c0018,ffff80003a4dfb10,ffff80003a4dfa60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4dfb10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4dfb10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa18102e3630, count: -10