uvm_fault(0xffffffff839ee618, 0xffff80000162008a, 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 * 2656 88747 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c905890,0,ffff80003c905800,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160ed00,ffff80003c905938,ffff80003c905890,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffb807ec62700,ffff800001602010) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602010,fffffb807ec62700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602010,0,ffff80003c905ae8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800030cb1240,9,ffff80003c905be0,808,ffff80003c905c80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800030cb1240,ffff80003c905d30,ffff80003c905c80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c905d30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c905d30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8f3aa5ec6c0, 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(0xffffffff839ee618, 0xffff80000162008a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c905890,0,ffff80003c905800,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160ed00,ffff80003c905938,ffff80003c905890,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffb807ec62700,ffff800001602010) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602010,fffffb807ec62700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602010,0,ffff80003c905ae8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800030cb1240,9,ffff80003c905be0,808,ffff80003c905c80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800030cb1240,ffff80003c905d30,ffff80003c905c80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c905d30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c905d30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8f3aa5ec6c0, count: -10 ddb> show registers rdi 0xffff800030cb2000 rsi 0x955 rbp 0xffff80003c9056e0 rbx 0xde rdx 0xffff800030cb2000 rcx 0xffff80000161ffa0 rax 0xfffffb807ec624e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x4404b14a194faaaa r11 0x5fe9b9b50505efcb r12 0x1a r13 0xfffffb807ec62400 r14 0xfffffb806cab79a8 r15 0xffff8000002a2058 rip 0xffffffff82e472b4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c905660 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=2656 pid=88747 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800030cb1ca0,0xffffffff83a3ca70 process=0xffff800030cad698 user=0xffff80003c900000, vmspace=0xfffffb806cac4460 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 88747 210195 97647 0 2 0 syz-executor *88747 2656 97647 0 7 0x4000000 syz-executor 50227 16814 86179 0 2 0 syz-executor 50227 165405 86179 0 3 0x4000080 semwait syz-executor 22960 413010 58972 0 2 0 syz-executor 22960 203506 58972 0 3 0x4000080 ttyin syz-executor 27784 191 54559 0 2 0 syz-executor 27784 165350 54559 0 3 0x4000080 fsleep syz-executor 98756 510155 59543 0 2 0 syz-executor 83929 286305 61284 0 2 0xc80 syz-executor 83929 244038 61284 0 3 0x4000080 kqread syz-executor 83929 23844 61284 0 3 0x4000080 fsleep syz-executor 10496 221470 36719 0 2 0 syz-executor 11496 454366 10261 0 3 0x80 nanoslp syz-executor 11496 502303 10261 0 2 0x4000000 syz-executor 11496 12053 10261 0 3 0x4000080 fsleep syz-executor 36719 336870 57281 0 2 0xc82 syz-executor 10261 417618 57281 0 2 0xc82 syz-executor 86179 331747 57281 0 3 0x82 nanoslp syz-executor 58972 385340 57281 0 2 0xc82 syz-executor 97647 485476 57281 0 2 0xc82 syz-executor 54559 298090 57281 0 3 0x82 nanoslp syz-executor 61284 33189 57281 0 2 0xc82 syz-executor 59543 62397 57281 0 2 0xc82 syz-executor 57281 317421 24794 0 3 0x82 kqread syz-executor 24794 50858 21918 0 3 0x10008a sigsusp ksh 21918 252022 5521 0 3 0x98 kqread sshd-session 5521 93297 42317 0 3 0x92 kqread sshd-session 20534 507986 1 0 3 0x100083 ttyin getty 42317 410848 1 0 3 0x88 kqread sshd 85360 313205 77665 73 3 0x1100090 kqread syslogd 77665 77020 1 0 3 0x100082 sbwait syslogd 98388 327360 1 0 3 0x100080 kqread resolvd 29560 233011 71623 77 3 0x100092 kqread dhcpleased 25252 97142 71623 77 3 0x100092 kqread dhcpleased 71623 367982 1 0 3 0x80 kqread dhcpleased 40698 444253 0 0 3 0x14200 bored smr 70906 37593 0 0 2 0x14200 zerothread 60583 229325 0 0 3 0x14200 aiodoned aiodoned 96164 444444 0 0 3 0x14200 syncer update 38133 388894 0 0 3 0x14200 cleaner cleaner 96703 69511 0 0 3 0x14200 reaper reaper 99355 168391 0 0 3 0x14200 pgdaemon pagedaemon 9550 119963 0 0 3 0x14200 bored viomb 2750 201818 0 0 3 0x40014200 acpi0 acpi0 76292 119715 0 0 3 0x14200 bored softnet0 53034 162403 0 0 3 0x14200 bored systqmp 27653 374234 0 0 3 0x14200 bored systq 34064 356321 0 0 3 0x40014200 tmoslp softclock 60521 475264 0 0 3 0x40014200 idle0 1 440527 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 11035 12116K 12309K 166960K 12172 0 pcb 17 12K 12K 166960K 25 0 rtable 248 8K 8K 166960K 373 0 pf 32 13K 14K 166960K 38 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 52 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 35 18K 18K 166960K 35 0 ioctlops 0 0K 4K 166960K 40 0 iov 0 0K 2K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1297 82K 82K 166960K 1394 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 180 0 proc 60 59K 91K 166960K 504 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 6 0 in_multi 99 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 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 204 158K 164K 166960K 3194 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 39 78K 93K 166960K 1283 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 16 0K 1K 166960K 28 0 temp 35 9102K 9110K 166960K 4716 0 kqueue 15 22K 26K 166960K 38 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 38 0 34 1 0 1 1 0 8 0 rtentry 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 59 0 41 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 28 0 23 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 107 0 97 2 0 2 2 0 8 1 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1072 2 0 0 1 0 1 1 0 8 0 pfrule 1360 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 semapl 72 3 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1622 0 160 92 0 92 92 0 8 0 ffsino 256 1622 0 160 92 0 92 92 0 8 0 nchpl 144 1886 0 192 63 0 63 63 0 8 0 vnodes 216 1733 0 0 97 0 97 97 0 8 0 namei 1024 5623 0 5623 1 0 1 1 0 8 1 kstatmem 264 25 0 0 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6280 0 6280 4 0 4 4 1 8 4 plimitpl 152 35 0 18 1 0 1 1 0 8 0 sigapl 424 476 0 433 6 0 6 6 0 8 1 knotepl 120 4715 0 4666 17 0 17 17 0 8 14 kqueuepl 184 41 0 29 1 0 1 1 0 8 0 pipepl 304 128 0 101 3 0 3 3 0 8 0 fdescpl 448 463 0 433 5 0 5 5 0 8 1 filepl 120 1763 0 1539 7 0 7 7 0 8 0 lockfpl 104 40 0 36 1 0 1 1 0 8 0 lockfspl 48 18 0 14 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 33 0 17 1 0 1 1 0 8 0 ucredpl 104 138 0 126 1 0 1 1 0 8 0 zombiepl 144 433 0 433 1 0 1 1 0 8 1 processpl 1152 476 0 433 4 0 4 4 0 8 0 procpl 664 536 0 485 5 0 5 5 0 8 0 sockpl 552 204 0 172 3 0 3 3 0 8 0 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2568 0 2515 15 0 15 15 0 8 7 mcl2k 2048 157 0 156 1 0 1 1 0 8 0 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 4542 0 4395 10 0 10 10 0 8 0 bufpl 280 2297 0 102 157 0 157 157 0 8 0 anonpl 24 79422 0 76356 31 0 31 31 0 186 11 amapchunkpl 152 8695 0 8270 22 0 22 22 0 158 5 amappl16 200 946 0 924 4 0 4 4 0 8 2 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 430 0 429 1 0 1 1 0 8 0 amappl13 176 115 0 105 1 0 1 1 0 8 0 amappl12 168 739 0 712 2 0 2 2 0 8 0 amappl11 160 32 0 32 1 0 1 1 0 8 1 amappl10 152 55 0 45 1 0 1 1 0 8 0 amappl9 144 333 0 333 1 0 1 1 0 8 1 amappl8 136 95 0 94 1 0 1 1 0 8 0 amappl7 128 149 0 138 1 0 1 1 0 8 0 amappl6 120 145 0 144 1 0 1 1 0 8 0 amappl5 112 90 0 82 1 0 1 1 0 8 0 amappl4 104 277 0 258 1 0 1 1 0 8 0 amappl3 96 1643 0 1543 3 0 3 3 0 8 0 amappl2 88 520 0 466 2 0 2 2 0 8 0 amappl1 80 10315 0 9758 13 0 13 13 0 8 0 amappl 88 2500 0 2359 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 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 6 0 6 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 463 0 433 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 463 0 433 1 0 1 1 0 8 0 vmmpekpl 168 5672 0 5644 2 0 2 2 0 8 0 vmmpepl 168 38205 0 36415 78 0 78 78 0 357 0 vmsppl 368 462 0 433 4 0 4 4 0 8 1 rwobjpl 40 13740 0 12813 11 0 11 11 0 8 1 pdppl 4096 932 0 866 96 30 66 78 0 8 0 pvpl 32 210219 0 201745 90 0 90 90 0 265 21 pmappl 216 462 0 433 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 360 0 30 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c905890,0,ffff80003c905800,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160ed00,ffff80003c905938,ffff80003c905890,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffb807ec62700,ffff800001602010) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602010,fffffb807ec62700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602010,0,ffff80003c905ae8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800030cb1240,9,ffff80003c905be0,808,ffff80003c905c80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800030cb1240,ffff80003c905d30,ffff80003c905c80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c905d30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c905d30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8f3aa5ec6c0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffb806cab79a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c905890,0,ffff80003c905800,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160ed00,ffff80003c905938,ffff80003c905890,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffb807ec62700,ffff800001602010) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602010,fffffb807ec62700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602010,0,ffff80003c905ae8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800030cb1240,9,ffff80003c905be0,808,ffff80003c905c80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800030cb1240,ffff80003c905d30,ffff80003c905c80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c905d30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c905d30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8f3aa5ec6c0, count: -10