uvm_fault(0xffffffff839ab6a8, 0xffff80000161f02a, 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 *413125 82679 0 0x10 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000338c3a40,0,ffff8000338c39b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001630800,ffff8000338c3ae8,ffff8000338c3a40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff9006f642700,ffff80000162c248) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff80000162c248,fffff9006f642700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000162c248,0,ffff8000338c3c98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b14d8,3,ffff8000338c3d90,808,ffff8000338c3e30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b14d8,ffff8000338c3ee0,ffff8000338c3e30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000338c3ee0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338c3ee0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9079c1b7c20, 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(0xffffffff839ab6a8, 0xffff80000161f02a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000338c3a40,0,ffff8000338c39b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001630800,ffff8000338c3ae8,ffff8000338c3a40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff9006f642700,ffff80000162c248) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff80000162c248,fffff9006f642700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000162c248,0,ffff8000338c3c98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b14d8,3,ffff8000338c3d90,808,ffff8000338c3e30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b14d8,ffff8000338c3ee0,ffff8000338c3e30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000338c3ee0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338c3ee0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9079c1b7c20, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff8000338c3890 rbx 0xde rdx 0 rcx 0xffff80000161ef40 rax 0xfffff9006caa0ee0 r8 0x1000 __ALIGN_SIZE r9 0x28e46f6d r10 0xf5e053c6c3bfadf1 r11 0x702bf612426dc32 r12 0x25 r13 0xfffff9006caa0e00 r14 0xfffff9006c9b8128 r15 0xffff8000002a2058 rip 0xffffffff8241fc54 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000338c3810 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=413125 pid=82679 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f0b0018,0xffff80002f0b0fb8 process=0xffff8000fffec920 user=0xffff8000338be000, vmspace=0xfffff9006ca212f8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 82679 388433 2456 0 2 0x10 syz-executor *82679 413125 2456 0 7 0x4000010 syz-executor 82679 253822 2456 0 3 0x4000090 fsleep syz-executor 31982 336038 5342 0 2 0 syz-executor 31982 499407 5342 0 3 0x4000080 fsleep syz-executor 48073 79428 35751 0 2 0x1 syz-executor 48073 317350 35751 0 3 0x4000081 fsleep syz-executor 36339 208595 0 0 3 0x14200 acct acct 87000 282275 0 0 3 0x14280 nfsidl nfsio 80106 98417 0 0 3 0x14280 nfsidl nfsio 92333 133605 0 0 3 0x14280 nfsidl nfsio 63246 511398 0 0 3 0x14280 nfsidl nfsio 61357 274756 0 0 3 0x14280 nfsidl nfsio 75888 40167 0 0 3 0x14280 nfsidl nfsio 19721 4689 0 0 3 0x14280 nfsidl nfsio 41056 209562 0 0 3 0x14280 nfsidl nfsio 38409 129105 0 0 3 0x14280 nfsidl nfsio 30201 387842 0 0 3 0x14280 nfsidl nfsio 16141 400351 0 0 3 0x14280 nfsidl nfsio 71564 16316 0 0 3 0x14280 nfsidl nfsio 19988 87613 0 0 3 0x14280 nfsidl nfsio 11524 29711 0 0 3 0x14280 nfsidl nfsio 26053 120408 0 0 3 0x14280 nfsidl nfsio 29257 131670 0 0 3 0x14280 nfsidl nfsio 33493 339870 0 0 3 0x14280 nfsidl nfsio 6354 465180 0 0 3 0x14280 nfsidl nfsio 35419 10043 0 0 3 0x14280 nfsidl nfsio 12847 521620 0 0 3 0x14280 nfsidl nfsio 2456 432111 78737 0 3 0x82 nanoslp syz-executor 52650 72619 78737 0 2 0x2 syz-executor 23247 354576 78737 0 2 0x2 syz-executor 5342 136357 78737 0 2 0xc82 syz-executor 35751 437922 78737 0 3 0x82 nanoslp syz-executor 28797 182471 78737 0 2 0x2 syz-executor 66363 308121 78737 0 3 0x82 nanoslp syz-executor 3146 11286 78737 0 3 0x82 nanoslp syz-executor 78737 350940 30727 0 3 0x82 kqread syz-executor 30727 499852 52981 0 3 0x10008a sigsusp ksh 52981 78427 14327 0 3 0x98 kqread sshd-session 14327 507651 50979 0 3 0x92 kqread sshd-session 74476 189853 1 0 3 0x100083 ttyin getty 50979 180706 1 0 3 0x88 kqread sshd 91318 156243 32864 73 3 0x1100090 kqread syslogd 32864 458519 1 0 3 0x100082 sbwait syslogd 99189 114250 1 0 3 0x100080 kqread resolvd 34998 367022 80907 77 3 0x100092 kqread dhcpleased 80355 27207 80907 77 3 0x100092 kqread dhcpleased 80907 393847 1 0 3 0x80 kqread dhcpleased 3512 331301 0 0 3 0x14200 bored smr 49053 507758 0 0 2 0x14200 zerothread 41504 467738 0 0 3 0x14200 aiodoned aiodoned 37470 350454 0 0 3 0x14200 syncer update 41218 430629 0 0 3 0x14200 cleaner cleaner 31752 336630 0 0 3 0x14200 reaper reaper 56648 181729 0 0 3 0x14200 pgdaemon pagedaemon 29173 14957 0 0 3 0x14200 bored viomb 58964 343868 0 0 3 0x40014200 acpi0 acpi0 8090 198852 0 0 3 0x14200 bored softnet0 17447 294030 0 0 3 0x14200 bored systqmp 7420 200352 0 0 3 0x14200 bored systq 37755 135736 0 0 3 0x40014200 tmoslp softclock 33134 48923 0 0 3 0x40014200 idle0 1 45195 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 11041 12116K 13349K 166960K 12585 0 pcb 17 12K 12K 166960K 50 0 rtable 241 8K 11K 166960K 430 0 pf 34 13K 16K 166960K 62 0 ifaddr 40 6K 8K 166960K 56 0 ifgroup 50 2K 2K 166960K 73 0 sysctl 3 1K 9K 166960K 8 0 counters 34 17K 18K 166960K 44 0 ioctlops 0 0K 4K 166960K 80 0 iov 0 0K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1363 86K 86K 166960K 1608 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 21 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 93K 166960K 368 0 sigio 0 0K 0K 166960K 2 0 proc 59 59K 91K 166960K 538 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 157 0 in_multi 88 6K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 462 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 205 150K 166K 166960K 5018 0 UVM aobj 10 2K 4K 166960K 12 0 pinsyscall 36 72K 94K 166960K 1478 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 13 0 NDP 12 0K 2K 166960K 35 0 temp 43 9108K 9171K 166960K 6066 0 kqueue 14 22K 26K 166960K 65 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 49 0 45 1 0 1 1 0 8 0 rtentry 136 122 0 22 4 0 4 4 0 8 0 unpcb 144 153 0 136 1 0 1 1 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 73 0 69 1 0 1 1 0 8 0 arp 96 19 0 3 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 6 0 2 1 0 1 1 0 8 0 inpcb 328 249 0 242 4 0 4 4 0 8 3 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 1 0 1 1 0 8 0 nd6 112 25 0 3 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 8 0 6 2 1 1 1 0 8 0 pppxif 1416 2 0 2 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pfrktable 1344 7 0 7 1 1 0 1 0 8 0 pfanchor 1288 1 0 1 1 1 0 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstkey 128 4 0 4 1 0 1 1 0 8 1 pfstate 384 2 0 2 1 0 1 1 0 8 1 pfrule 1360 2 0 2 2 1 1 1 0 8 1 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 510 0 89 32 0 32 32 0 8 1 art_table 40 512 0 89 6 0 6 6 0 8 0 art_node 32 119 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 72 19 0 9 1 0 1 1 0 8 0 shmpl 112 9 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2019 0 560 92 0 92 92 0 8 0 ffsino 256 2019 0 560 92 0 92 92 0 8 0 nchpl 144 2503 0 810 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2265 0 0 126 0 126 126 0 8 0 namei 1024 7786 0 7785 2 1 1 2 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 kstatmem 264 39 0 14 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 8772 0 8772 11 3 8 8 1 8 8 plimitpl 152 50 0 34 1 0 1 1 0 8 0 sigapl 424 687 0 626 8 0 8 8 0 8 0 knotepl 120 12745 0 12697 19 10 9 17 0 8 6 kqueuepl 184 96 0 85 1 0 1 1 0 8 0 pipepl 304 137 0 110 3 0 3 3 0 8 0 fdescpl 448 653 0 626 5 1 4 5 0 8 0 filepl 120 2685 0 2473 10 2 8 10 0 8 0 lockfpl 104 90 0 88 1 0 1 1 0 8 0 lockfspl 48 41 0 39 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 41 0 24 1 0 1 1 0 8 0 ucredpl 104 286 0 273 1 0 1 1 0 8 0 zombiepl 144 723 0 721 2 1 1 1 0 8 0 processpl 1152 687 0 626 5 0 5 5 0 8 0 procpl 664 1080 0 1015 8 0 8 8 0 8 1 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 458 0 430 5 0 5 5 0 8 2 mcl64k 65536 17 0 16 2 1 1 1 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 75 0 75 2 1 1 1 0 8 1 mcl4k 4096 2806 0 2753 13 5 8 13 0 8 0 mcl2k 2048 361 0 359 4 2 2 2 0 8 1 mtagpl 96 6 0 4 1 0 1 1 0 8 0 mbufpl 256 6544 0 6361 14 1 13 13 0 8 0 bufpl 280 2785 0 103 192 0 192 192 0 8 0 anonpl 24 112597 0 109590 61 22 39 61 0 186 15 amapchunkpl 152 15946 0 15531 37 6 31 34 0 158 11 amappl16 200 1745 0 1716 16 13 3 16 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 432 0 431 1 0 1 1 0 8 0 amappl13 176 138 0 128 1 0 1 1 0 8 0 amappl12 168 893 0 867 2 0 2 2 0 8 0 amappl11 160 50 0 49 1 0 1 1 0 8 0 amappl10 152 62 0 52 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 104 0 103 1 0 1 1 0 8 0 amappl7 128 201 0 189 1 0 1 1 0 8 0 amappl6 120 149 0 148 1 0 1 1 0 8 0 amappl5 112 123 0 116 1 0 1 1 0 8 0 amappl4 104 264 0 247 1 0 1 1 0 8 0 amappl3 96 2966 0 2869 4 0 4 4 0 8 0 amappl2 88 533 0 479 2 0 2 2 0 8 0 amappl1 80 11246 0 10707 13 1 12 13 0 8 0 amappl 88 4267 0 4125 5 0 5 5 0 92 1 uvmvnodes 80 108 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 128 254 0 254 2 1 1 1 0 8 1 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 11 0 2 1 0 1 1 0 8 0 uaddrrnd 24 653 0 626 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 653 0 626 1 0 1 1 0 8 0 vmmpekpl 168 7086 0 7049 2 0 2 2 0 8 0 vmmpepl 168 50047 0 48380 93 10 83 93 0 357 3 vmsppl 368 652 0 626 4 1 3 4 0 8 0 rwobjpl 40 16659 0 15718 13 1 12 13 0 8 0 pdppl 4096 1312 0 1252 94 28 66 80 0 8 6 pvpl 32 300920 0 292982 144 38 106 144 0 265 20 pmappl 216 652 0 626 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 369 0 45 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000338c3a40,0,ffff8000338c39b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001630800,ffff8000338c3ae8,ffff8000338c3a40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff9006f642700,ffff80000162c248) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff80000162c248,fffff9006f642700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000162c248,0,ffff8000338c3c98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b14d8,3,ffff8000338c3d90,808,ffff8000338c3e30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b14d8,ffff8000338c3ee0,ffff8000338c3e30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000338c3ee0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338c3ee0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9079c1b7c20, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff9006c9b8128) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000338c3a40,0,ffff8000338c39b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001630800,ffff8000338c3ae8,ffff8000338c3a40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff9006f642700,ffff80000162c248) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff80000162c248,fffff9006f642700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000162c248,0,ffff8000338c3c98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b14d8,3,ffff8000338c3d90,808,ffff8000338c3e30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b14d8,ffff8000338c3ee0,ffff8000338c3e30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000338c3ee0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338c3ee0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9079c1b7c20, count: -10