uvm_fault(0xffffffff83a3e3e8, 0xffff8000017d202a, 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 *412611 21306 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92b060,0,ffff80003c92afd0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800010fe1700,ffff80003c92b108,ffff80003c92b060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dda6e00,ffff80000166cb88) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000166cb88,fffffd806dda6e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000166cb88,0,ffff80003c92b2b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a90a2c8,4,ffff80003c92b3b0,808,ffff80003c92b450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a90a2c8,ffff80003c92b500,ffff80003c92b450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92b500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92b500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41e52d05060, 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(0xffffffff83a3e3e8, 0xffff8000017d202a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92b060,0,ffff80003c92afd0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800010fe1700,ffff80003c92b108,ffff80003c92b060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dda6e00,ffff80000166cb88) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000166cb88,fffffd806dda6e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000166cb88,0,ffff80003c92b2b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a90a2c8,4,ffff80003c92b3b0,808,ffff80003c92b450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a90a2c8,ffff80003c92b500,ffff80003c92b450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92b500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92b500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41e52d05060, count: -10 ddb> show registers rdi 0xffff80003a90e000 rsi 0x3df rbp 0xffff80003c92aeb0 rbx 0xde rdx 0xffff80003a90e000 rcx 0xffff8000017d1f40 rax 0xfffffd806dda66e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xa977fd27138f78d2 r11 0xde6d8c93c1c2fa8e r12 0x38 r13 0xfffffd806dda6600 r14 0xfffffd806a457668 r15 0xffff8000002a2058 rip 0xffffffff82228bb4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c92ae30 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=412611 pid=21306 tcnt=3 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=0xffff80003a90afc0,0xffff80003a90ad38 process=0xffff8000ffff9218 user=0xffff80003c926000, vmspace=0xfffffd806a5082f8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97085 373822 17791 0 3 0x3000 suspend syz-executor 97085 34180 17791 0 2 0x4081000 syz-executor 8494 293385 27322 0 2 0 syz-executor 8494 85372 27322 0 3 0x4000080 fsleep syz-executor 21306 412401 77272 0 2 0 syz-executor 21306 80183 77272 0 3 0x4000080 sbwait syz-executor *21306 412611 77272 0 7 0x4000000 syz-executor 33085 268289 98003 0 2 0xc80 syz-executor 33085 160182 98003 0 3 0x4000080 piperd syz-executor 33085 191275 98003 0 3 0x4000080 piperd syz-executor 33085 297502 98003 0 3 0x4000080 fsleep syz-executor 47955 261617 61154 0 2 0xc80 syz-executor 47955 67675 61154 0 3 0x4000080 kqpoll syz-executor 47955 436363 61154 0 3 0x4000080 fsleep syz-executor 19506 358724 564 60929 2 0xc90 syz-executor 19506 300752 564 60929 3 0x4000090 netcon syz-executor 19506 354996 564 60929 3 0x4000090 fsleep syz-executor 19506 314014 564 60929 3 0x4000090 fsleep syz-executor 564 501517 40982 0 2 0xc82 syz-executor 98003 381643 40982 0 2 0xc82 syz-executor 27322 20555 40982 0 2 0xc82 syz-executor 39664 486792 0 0 3 0x14280 nfsidl nfsio 56526 514918 0 0 3 0x14280 nfsidl nfsio 93150 364202 0 0 3 0x14280 nfsidl nfsio 32403 442849 0 0 3 0x14280 nfsidl nfsio 68939 3368 0 0 3 0x14280 nfsidl nfsio 81040 19335 0 0 3 0x14280 nfsidl nfsio 95828 11476 0 0 3 0x14280 nfsidl nfsio 63613 242876 0 0 3 0x14280 nfsidl nfsio 24696 61517 0 0 3 0x14280 nfsidl nfsio 46772 296581 0 0 3 0x14280 nfsidl nfsio 99058 46676 0 0 3 0x14280 nfsidl nfsio 38006 171979 0 0 3 0x14280 nfsidl nfsio 52922 467742 0 0 3 0x14280 nfsidl nfsio 32990 86074 0 0 3 0x14280 nfsidl nfsio 72391 429289 0 0 3 0x14280 nfsidl nfsio 4426 259552 0 0 3 0x14280 nfsidl nfsio 63754 112735 0 0 3 0x14280 nfsidl nfsio 43893 318563 0 0 3 0x14280 nfsidl nfsio 42077 139542 0 0 3 0x14280 nfsidl nfsio 79101 341268 0 0 3 0x14280 nfsidl nfsio 17791 214240 40982 0 3 0x82 nanoslp syz-executor 77272 427600 40982 0 2 0xc82 syz-executor 84950 199034 40982 0 2 0x2 syz-executor 61154 248218 40982 0 2 0xc82 syz-executor 2813 483402 40982 0 2 0xc82 syz-executor 40982 89082 93300 0 3 0x82 kqread syz-executor 93300 351368 73951 0 3 0x10008a sigsusp ksh 73951 113289 91001 0 3 0x98 kqread sshd-session 91001 141933 37031 0 3 0x92 kqread sshd-session 99923 65583 1 0 3 0x100083 ttyopn getty 37031 504957 1 0 3 0x88 kqread sshd 19226 513409 35153 73 3 0x1100090 kqread syslogd 35153 448537 1 0 3 0x100082 sbwait syslogd 59360 201024 1 0 3 0x100080 kqread resolvd 78339 200627 41022 77 3 0x100092 kqread dhcpleased 15680 119121 41022 77 3 0x100092 kqread dhcpleased 41022 371100 1 0 3 0x80 kqread dhcpleased 81775 463302 0 0 3 0x14200 bored smr 24526 449315 0 0 2 0x14200 zerothread 64591 205638 0 0 3 0x14200 aiodoned aiodoned 41886 518008 0 0 3 0x14200 syncer update 58202 341714 0 0 3 0x14200 cleaner cleaner 13602 83550 0 0 3 0x14200 reaper reaper 44693 17115 0 0 3 0x14200 pgdaemon pagedaemon 78754 389738 0 0 3 0x14200 bored viomb 62655 313542 0 0 3 0x40014200 acpi0 acpi0 10139 160140 0 0 3 0x14200 bored softnet0 53850 402110 0 0 3 0x14200 bored systqmp 52975 147587 0 0 3 0x14200 bored systq 91485 61572 0 0 2 0x40014200 softclock 45832 479075 0 0 3 0x40014200 idle0 1 254475 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 11076 12127K 12871K 166960K 14300 0 pcb 20 15K 17K 166960K 532 0 rtable 241 11K 11K 166960K 609 0 pf 35 14K 15K 166960K 144 0 ifaddr 42 7K 9K 166960K 115 0 ifgroup 58 2K 2K 166960K 191 0 sysctl 4 1K 9K 166960K 79 0 counters 35 18K 18K 166960K 105 0 ioctlops 0 0K 4K 166960K 283 0 iov 0 0K 24K 166960K 119 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1379 87K 88K 166960K 2637 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 1K 166960K 198 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 1272 0 sigio 0 0K 0K 166960K 215 0 proc 65 67K 124K 166960K 717 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 137 0 in_multi 92 6K 7K 166960K 186 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 37 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 587 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 228 151K 168K 166960K 12748 0 UVM aobj 50 32K 32K 166960K 57 0 pinsyscall 38 76K 96K 166960K 2421 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 1K 166960K 88 0 NDP 12 0K 2K 166960K 79 0 temp 79 9076K 9192K 166960K 45136 0 kqueue 13 20K 32K 166960K 236 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 120 281 0 277 3 0 3 3 0 8 2 rtentry 136 181 0 83 4 0 4 4 0 8 0 unpcb 144 1196 0 1179 8 0 8 8 0 8 6 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 550 0 543 10 3 7 7 0 8 6 arp 96 25 0 9 1 0 1 1 0 8 0 ipq 40 7 0 1 1 0 1 1 0 8 0 ipqe 40 8 0 2 1 0 1 1 0 8 0 inpcb 328 1768 0 1755 23 8 15 15 0 8 12 ip6q 72 4 0 0 1 0 1 1 0 8 0 ip6af 40 5 0 1 1 0 1 1 0 8 0 nd6 112 41 0 16 1 0 1 1 0 8 0 pkpcb 40 75 0 75 1 0 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1072 53 0 52 1 0 1 1 0 8 0 pppxif 1384 9 0 8 1 0 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 rttmr 136 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 877 0 452 34 0 34 34 0 8 5 art_table 40 880 0 452 6 0 6 6 0 8 1 art_node 32 179 0 91 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 41 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 193 0 183 1 0 1 1 0 8 0 shmpl 112 40 0 7 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 3828 0 2375 92 0 92 92 0 8 0 ffsino 256 3828 0 2375 92 0 92 92 0 8 0 nchpl 144 5625 0 3926 65 1 64 64 0 8 0 rtmask 32 17 0 17 1 0 1 1 0 8 1 vnodes 216 4581 0 0 255 0 255 255 0 8 0 namei 1024 20747 0 20745 3 2 1 2 0 8 0 vcpupl 3904 14 0 0 2 0 2 2 0 8 0 vmpool 808 14 0 0 2 0 2 2 0 8 0 kstatmem 264 110 0 86 3 0 3 3 0 8 1 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 18132 0 18132 9 1 8 8 1 8 8 plimitpl 152 359 0 342 1 0 1 1 0 8 0 sigapl 424 1580 0 1518 8 0 8 8 0 8 0 knotepl 120 51122 0 51075 30 19 11 17 0 8 9 kqueuepl 184 446 0 403 3 0 3 3 0 8 0 pipepl 304 335 0 307 8 0 8 8 0 8 5 fdescpl 448 1539 0 1510 5 1 4 5 0 8 0 filepl 120 11826 0 11572 17 0 17 17 0 8 5 lockfpl 104 413 0 411 1 0 1 1 0 8 0 lockfspl 48 157 0 155 1 0 1 1 0 8 0 sessionpl 144 26 0 18 1 0 1 1 0 8 0 pgrppl 48 52 0 36 1 0 1 1 0 8 0 ucredpl 104 1751 0 1739 1 0 1 1 0 8 0 zombiepl 144 1520 0 1518 1 0 1 1 0 8 0 processpl 1152 1580 0 1518 5 0 5 5 0 8 0 procpl 664 3238 0 3164 7 0 7 7 0 8 0 sosppl 176 6 0 6 1 0 1 1 0 8 1 sockpl 552 3421 0 3387 29 8 21 21 0 8 16 mcl64k 65536 61 0 60 1 0 1 1 0 8 0 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 14 0 14 2 1 1 1 0 8 1 mcl4k 4096 3950 0 3897 17 8 9 16 0 8 2 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 1419 0 1413 4 1 3 3 0 8 2 mtagpl 96 89 0 78 3 1 2 2 0 8 0 mbufpl 256 17717 0 17556 82 60 22 78 0 8 8 bufpl 280 5147 0 118 360 0 360 360 0 8 0 anonpl 24 202128 0 198894 59 2 57 57 0 187 30 amapchunkpl 152 50406 0 49917 35 1 34 34 0 158 13 amappl16 200 3030 0 2994 14 3 11 11 0 8 7 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 466 0 464 1 0 1 1 0 8 0 amappl13 176 119 0 108 1 0 1 1 0 8 0 amappl12 168 1781 0 1753 2 0 2 2 0 8 0 amappl11 160 9 0 9 1 1 0 1 0 8 0 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 121 0 119 1 0 1 1 0 8 0 amappl7 128 59 0 57 1 0 1 1 0 8 0 amappl6 120 283 0 272 1 0 1 1 0 8 0 amappl5 112 79 0 72 1 0 1 1 0 8 0 amappl4 104 476 0 442 3 1 2 2 0 8 0 amappl3 96 7530 0 7440 3 0 3 3 0 8 0 amappl2 88 1619 0 1556 2 0 2 2 0 8 0 amappl1 80 14526 0 13985 14 1 13 13 0 8 0 amappl 88 11810 0 11645 5 0 5 5 0 92 0 uvmvnodes 80 124 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 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 56 0 7 1 0 1 1 0 8 0 uaddrrnd 24 1539 0 1510 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1539 0 1510 1 0 1 1 0 8 0 vmmpekpl 168 13281 0 13243 3 0 3 3 0 8 0 vmmpepl 168 100398 0 98580 89 0 89 89 0 357 7 vmsppl 368 1538 0 1510 4 1 3 4 0 8 0 rwobjpl 40 26349 0 25319 12 0 12 12 0 8 0 pdppl 4096 3112 0 3034 128 48 80 82 0 8 2 pvpl 32 639211 0 630572 136 3 133 133 0 265 47 pmappl 216 1552 0 1510 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 491 0 128 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92b060,0,ffff80003c92afd0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800010fe1700,ffff80003c92b108,ffff80003c92b060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dda6e00,ffff80000166cb88) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000166cb88,fffffd806dda6e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000166cb88,0,ffff80003c92b2b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a90a2c8,4,ffff80003c92b3b0,808,ffff80003c92b450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a90a2c8,ffff80003c92b500,ffff80003c92b450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92b500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92b500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41e52d05060, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a457668) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92b060,0,ffff80003c92afd0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800010fe1700,ffff80003c92b108,ffff80003c92b060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dda6e00,ffff80000166cb88) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000166cb88,fffffd806dda6e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000166cb88,0,ffff80003c92b2b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a90a2c8,4,ffff80003c92b3b0,808,ffff80003c92b450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a90a2c8,ffff80003c92b500,ffff80003c92b450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92b500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92b500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41e52d05060, count: -10