uvm_fault(0xffffffff83a15638, 0xffff80000167100a, 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 *180549 58526 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c94f3e0,0,ffff80003c94f350,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001674a00,ffff80003c94f488,ffff80003c94f3e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff100609b2b00,ffff800001668020) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001668020,fffff100609b2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001668020,0,ffff80003c94f638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003acd0550,4,ffff80003c94f730,808,ffff80003c94f7d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003acd0550,ffff80003c94f880,ffff80003c94f7d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c94f880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94f880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6fe9c9380, 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(0xffffffff83a15638, 0xffff80000167100a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c94f3e0,0,ffff80003c94f350,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001674a00,ffff80003c94f488,ffff80003c94f3e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff100609b2b00,ffff800001668020) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001668020,fffff100609b2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001668020,0,ffff80003c94f638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003acd0550,4,ffff80003c94f730,808,ffff80003c94f7d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003acd0550,ffff80003c94f880,ffff80003c94f7d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c94f880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94f880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6fe9c9380, count: -10 ddb> show registers rdi 0xffff8000390ca000 rsi 0x521 rbp 0xffff80003c94f230 rbx 0xde rdx 0xffff8000390ca000 rcx 0xffff800001670f20 rax 0xfffff10062ef94e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x82d795356792716c r11 0xcb09768a7c211b6e r12 0x35 r13 0xfffff10062ef9400 r14 0xfffff10063cdab40 r15 0xffff8000002a2058 rip 0xffffffff825a1464 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c94f1b0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=180549 pid=58526 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=82, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003acd1a10,0xffff80002a77cd20 process=0xffff8000ffffa898 user=0xffff80003c94a000, vmspace=0xfffff1006cab5010 estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 32306 318174 53817 0 2 0 syz-executor 32306 17688 53817 0 2 0x4000000 syz-executor 62391 320021 48553 0 2 0 syz-executor 62391 42062 48553 0 3 0x4000080 fsleep syz-executor 21306 513263 8631 0 2 0 syz-executor 21306 18344 8631 0 3 0x4000080 fsleep syz-executor 21306 181484 8631 0 3 0x4000080 fsleep syz-executor 14281 317170 95681 0 2 0 syz-executor 14281 302520 95681 0 2 0x4000000 syz-executor 58526 429090 24706 0 2 0 syz-executor *58526 180549 24706 0 7 0x4000000 syz-executor 98202 479064 18843 0 3 0x3000 suspend syz-executor 98202 207697 18843 0 2 0x4081000 syz-executor 98202 350390 18843 0 3 0x4081000 inode syz-executor 95538 255612 76528 0 2 0x3 syz-executor 8631 423539 76528 0 3 0x82 nanoslp syz-executor 94933 83023 1 0 3 0x100083 ttyin getty 5608 158536 76528 0 3 0x82 nanoslp syz-executor 24706 180956 76528 0 3 0x82 nanoslp syz-executor 18843 388642 76528 0 3 0x82 nanoslp syz-executor 48553 469704 76528 0 3 0x82 nanoslp syz-executor 53817 100436 76528 0 2 0x3 syz-executor 95681 428802 76528 0 3 0x82 nanoslp syz-executor 76528 227606 55696 0 3 0x82 kqread syz-executor 55696 483017 23658 0 3 0x10008a sigsusp ksh 23658 243436 71148 0 3 0x98 kqread sshd-session 71148 516637 2961 0 3 0x92 kqread sshd-session 2961 81012 1 0 3 0x88 kqread sshd 36503 217195 80057 73 3 0x1100090 kqread syslogd 80057 317705 1 0 3 0x100082 sbwait syslogd 71601 404273 1 0 3 0x100080 kqread resolvd 11525 54196 13693 77 3 0x100092 kqread dhcpleased 51516 109501 13693 77 3 0x100092 kqread dhcpleased 13693 430737 1 0 3 0x80 kqread dhcpleased 57752 247503 0 0 3 0x14200 bored smr 70297 425114 0 0 2 0x14200 zerothread 72690 442021 0 0 3 0x14200 aiodoned aiodoned 77654 401876 0 0 3 0x14200 syncer update 38940 53878 0 0 3 0x14200 cleaner cleaner 22806 177807 0 0 3 0x14200 reaper reaper 89689 79268 0 0 3 0x14200 pgdaemon pagedaemon 50732 211334 0 0 3 0x14200 bored viomb 31811 403892 0 0 3 0x40014200 acpi0 acpi0 11333 14049 0 0 3 0x14200 bored softnet0 26353 122462 0 0 3 0x14200 bored systqmp 32964 375574 0 0 3 0x14200 bored systq 15540 129647 0 0 3 0x40014200 tmoslp softclock 18102 205626 0 0 3 0x40014200 idle0 1 199796 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 11048 12125K 12513K 166960K 13275 0 pcb 17 14K 18K 166960K 190 0 rtable 247 9K 10K 166960K 520 0 pf 32 13K 15K 166960K 77 0 ifaddr 40 7K 7K 166960K 80 0 ifgroup 50 2K 2K 166960K 101 0 sysctl 4 1K 9K 166960K 11 0 counters 33 17K 18K 166960K 63 0 ioctlops 0 0K 4K 166960K 283 0 iov 0 0K 16K 166960K 33 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1355 85K 86K 166960K 1973 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 62 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 919 0 sigio 0 0K 0K 166960K 6 0 proc 60 59K 91K 166960K 664 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 79 0 in_multi 89 6K 7K 166960K 160 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 27 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 514 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 220 159K 168K 166960K 9348 0 UVM aobj 24 2K 2K 166960K 27 0 pinsyscall 38 76K 90K 166960K 2072 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 32 0 NDP 11 0K 2K 166960K 56 0 temp 53 9112K 9180K 166960K 32489 0 kqueue 14 22K 34K 166960K 180 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 78 0 73 1 0 1 1 0 8 0 rtentry 136 159 0 54 4 0 4 4 0 8 0 unpcb 144 604 0 584 1 0 1 1 0 8 0 syncache 336 6 0 6 1 1 0 1 0 8 0 tcpcb 736 225 0 221 4 3 1 4 0 8 0 arp 96 26 0 8 1 0 1 1 0 8 0 ipq 40 3 0 1 1 0 1 1 0 8 0 ipqe 40 6 0 4 1 0 1 1 0 8 0 inpcb 328 766 0 759 8 6 2 7 0 8 1 ip6q 72 3 0 2 1 0 1 1 0 8 0 ip6af 40 5 0 4 1 0 1 1 0 8 0 nd6 112 37 0 15 1 0 1 1 0 8 0 pkpcb 40 37 0 37 1 1 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 4 0 4 1 1 0 1 0 8 0 ppxss 1072 26 0 26 1 1 0 1 0 8 0 pfstscr 40 4 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 1 1 0 1 1 0 8 0 pfstkey 128 2 0 1 1 0 1 1 0 8 0 pfstate 384 2 0 0 1 0 1 1 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 658 0 240 30 2 28 30 0 8 0 art_table 40 660 0 240 5 0 5 5 0 8 0 art_node 32 159 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 8 1 0 1 1 0 8 0 semapl 72 59 0 49 1 0 1 1 0 8 0 shmpl 112 24 0 3 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2867 0 1406 92 0 92 92 0 8 0 ffsino 256 2867 0 1406 92 0 92 92 0 8 0 nchpl 144 4115 0 2411 64 0 64 64 0 8 0 rtmask 32 9 0 9 1 1 0 1 0 8 0 vnodes 216 3302 0 0 184 0 184 184 0 8 0 namei 1024 13722 0 13722 1 0 1 1 0 8 1 kstatmem 264 65 0 42 2 0 2 2 0 8 0 scsiplug 72 6 0 6 1 1 0 1 0 8 0 scxspl 216 15258 0 15258 8 7 1 8 1 8 1 plimitpl 152 191 0 173 1 0 1 1 0 8 0 sigapl 424 1194 0 1152 8 2 6 8 0 8 0 knotepl 120 28040 0 27777 21 13 8 17 0 8 0 kqueuepl 184 354 0 344 4 3 1 4 0 8 0 pipepl 304 168 0 141 3 0 3 3 0 8 0 fdescpl 448 1160 0 1131 4 0 4 4 0 8 0 filepl 120 6052 0 5831 10 1 9 10 0 8 0 lockfpl 104 265 0 261 1 0 1 1 0 8 0 lockfspl 48 119 0 116 1 0 1 1 0 8 0 sessionpl 144 60 0 52 1 0 1 1 0 8 0 pgrppl 48 87 0 71 1 0 1 1 0 8 0 ucredpl 104 1219 0 1206 1 0 1 1 0 8 0 zombiepl 144 1193 0 1191 1 0 1 1 0 8 0 processpl 1152 1194 0 1152 5 0 5 5 0 8 0 procpl 664 2216 0 2166 7 1 6 7 0 8 0 sosppl 176 8 0 8 1 1 0 1 0 8 0 sockpl 552 1616 0 1584 7 4 3 7 0 8 0 mcl64k 65536 55 0 55 2 1 1 1 0 8 1 mcl16k 16384 9 0 9 1 1 0 1 0 8 0 mcl12k 12288 3 0 3 1 1 0 1 0 8 0 mcl8k 8192 62 0 62 2 1 1 1 0 8 1 mcl4k 4096 3560 0 3508 15 7 8 15 0 8 1 mcl2k2 2112 2 0 2 1 1 0 1 0 8 0 mcl2k 2048 744 0 734 2 0 2 2 0 8 0 mtagpl 96 18 0 7 1 0 1 1 0 8 0 mbufpl 256 11085 0 10894 14 0 14 14 0 8 0 bufpl 272 4927 0 102 322 0 322 322 0 8 0 anonpl 24 167646 0 162927 51 16 35 44 0 186 0 amapchunkpl 152 43641 0 43114 39 13 26 34 0 158 2 amappl16 200 2791 0 2732 17 13 4 15 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 447 0 446 1 0 1 1 0 8 0 amappl13 176 140 0 130 1 0 1 1 0 8 0 amappl12 168 1427 0 1399 2 0 2 2 0 8 0 amappl11 160 38 0 37 1 0 1 1 0 8 0 amappl10 152 60 0 50 1 0 1 1 0 8 0 amappl9 144 270 0 270 1 1 0 1 0 8 0 amappl8 136 106 0 105 1 0 1 1 0 8 0 amappl7 128 151 0 139 1 0 1 1 0 8 0 amappl6 120 182 0 181 1 0 1 1 0 8 0 amappl5 112 98 0 89 1 0 1 1 0 8 0 amappl4 104 277 0 259 1 0 1 1 0 8 0 amappl3 96 6224 0 6115 4 0 4 4 0 8 0 amappl2 88 563 0 508 2 0 2 2 0 8 0 amappl1 80 13380 0 12836 13 1 12 13 0 8 0 amappl 88 8464 0 8308 5 0 5 5 0 92 0 uvmvnodes 80 121 0 0 3 0 3 3 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 128 257 0 257 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 26 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1160 0 1131 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1160 0 1131 1 0 1 1 0 8 0 vmmpekpl 168 10065 0 10030 3 0 3 3 0 8 0 vmmpepl 168 79013 0 77194 92 8 84 92 0 357 0 vmsppl 368 1159 0 1131 4 1 3 4 0 8 0 rwobjpl 40 22926 0 21907 13 1 12 13 0 8 0 pdppl 4096 2326 0 2262 102 36 66 76 0 8 2 pvpl 32 520610 0 509311 125 22 103 110 0 265 0 pmappl 216 1159 0 1131 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 697 0 56 19 0 19 19 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c94f3e0,0,ffff80003c94f350,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001674a00,ffff80003c94f488,ffff80003c94f3e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff100609b2b00,ffff800001668020) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001668020,fffff100609b2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001668020,0,ffff80003c94f638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003acd0550,4,ffff80003c94f730,808,ffff80003c94f7d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003acd0550,ffff80003c94f880,ffff80003c94f7d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c94f880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94f880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6fe9c9380, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff10063cdab40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c94f3e0,0,ffff80003c94f350,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001674a00,ffff80003c94f488,ffff80003c94f3e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff100609b2b00,ffff800001668020) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001668020,fffff100609b2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001668020,0,ffff80003c94f638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003acd0550,4,ffff80003c94f730,808,ffff80003c94f7d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003acd0550,ffff80003c94f880,ffff80003c94f7d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c94f880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94f880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5b6fe9c9380, count: -10