uvm_fault(0xffffffff83958050, 0xffff80000148e0ca, 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 *215032 32209 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031507a50,0,ffff8000315079c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148b600,ffff800031507af8,ffff800031507a50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c192800,ffff80000147f9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147f9f0,fffffd806c192800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147f9f0,0,ffff800031507ca8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f101ca8,3,ffff800031507da0,808,ffff800031507e40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f101ca8,ffff800031507ef0,ffff800031507e40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031507ef0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031507ef0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3591b06f1c0, 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(0xffffffff83958050, 0xffff80000148e0ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031507a50,0,ffff8000315079c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148b600,ffff800031507af8,ffff800031507a50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c192800,ffff80000147f9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147f9f0,fffffd806c192800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147f9f0,0,ffff800031507ca8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f101ca8,3,ffff800031507da0,808,ffff800031507e40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f101ca8,ffff800031507ef0,ffff800031507e40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031507ef0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031507ef0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3591b06f1c0, count: -10 ddb> show registers rdi 0xffff80002ccfc000 rsi 0x957 rbp 0xffff8000315078a0 rbx 0xde rdx 0xffff80002ccfc000 rcx 0xffff80000148dfe0 rax 0xfffffd806c192ee0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x9e8191292a248627 r11 0xcc1937f4a906299 r12 0x18 r13 0xfffffd806c192e00 r14 0xfffffd800d37f810 r15 0xffff800000039058 rip 0xffffffff817b5524 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800031507820 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=215032 pid=32209 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f100d18,0xffff80002f100a90 process=0xffff80002f0fc498 user=0xffff800031502000, vmspace=0xfffffd800d380748 estcpu=9, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 5290 330804 9625 0 2 0 syz-executor 85783 189206 75831 0 2 0 syz-executor 85783 510948 75831 0 2 0x4000000 syz-executor 60043 102449 70458 0 2 0 syz-executor 60043 144498 70458 0 2 0x4000000 syz-executor 85890 238382 59272 0 2 0 syz-executor 85890 191600 59272 0 3 0x4000080 fsleep syz-executor 2526 179986 14805 0 2 0 syz-executor 2526 66251 14805 0 2 0x4000000 syz-executor 32209 160956 28630 0 2 0 syz-executor *32209 215032 28630 0 7 0x4000000 syz-executor 28256 347206 23231 0 2 0x100002 sh 59272 25165 85456 0 3 0x82 nanoslp syz-executor 75831 156260 85456 0 3 0x82 nanoslp syz-executor 82108 204647 85456 0 3 0x82 piperd syz-executor 9625 56013 85456 0 3 0x82 nanoslp syz-executor 70458 200871 85456 0 3 0x82 nanoslp syz-executor 23231 280320 85456 0 3 0x82 wait syz-executor 28630 256418 85456 0 3 0x82 nanoslp syz-executor 14805 14603 85456 0 3 0x82 nanoslp syz-executor 85456 490867 49893 0 2 0x2 syz-executor 49893 357596 36708 0 3 0x10008a sigsusp ksh 36708 57662 11737 0 3 0x98 kqread sshd-session 11737 75098 49162 0 3 0x92 kqread sshd-session 95206 166009 1 0 3 0x100083 ttyin getty 49162 92597 1 0 3 0x88 kqread sshd 35737 123896 53971 73 3 0x1100090 kqread syslogd 53971 513101 1 0 3 0x100082 sbwait syslogd 30856 139026 1 0 3 0x100080 kqread resolvd 53146 275291 17567 77 3 0x100092 kqread dhcpleased 15466 240160 17567 77 3 0x100092 kqread dhcpleased 17567 411985 1 0 3 0x80 kqread dhcpleased 65824 452330 0 0 3 0x14200 bored smr 20306 491945 0 0 2 0x14200 zerothread 90364 249129 0 0 3 0x14200 aiodoned aiodoned 36057 373229 0 0 3 0x14200 syncer update 81686 335526 0 0 3 0x14200 cleaner cleaner 33974 122504 0 0 3 0x14200 reaper reaper 18825 492524 0 0 3 0x14200 pgdaemon pagedaemon 94945 10186 0 0 3 0x14200 bored viomb 22579 292360 0 0 3 0x40014200 acpi0 acpi0 96040 385182 0 0 2 0x14200 softnet0 70382 359215 0 0 3 0x14200 smrbar systqmp 97805 523668 0 0 3 0x14200 bored systq 22827 304277 0 0 3 0x40014200 tmoslp softclock 78445 360667 0 0 3 0x40014200 idle0 1 325635 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 10162 11039K 11053K 166960K 11246 0 pcb 18 12K 12K 166960K 18 0 rtable 244 8K 8K 166960K 364 0 pf 30 12K 12K 166960K 30 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 2K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1355 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 135 0 proc 57 58K 91K 166960K 471 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 356 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 201 151K 158K 166960K 2822 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 94K 166960K 1203 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 33 8638K 8700K 166960K 3705 0 kqueue 13 20K 20K 166960K 22 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 36 0 32 1 0 1 1 0 8 0 rtentry 136 111 0 1 4 0 4 4 0 8 0 unpcb 144 31 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 7 0 3 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 58 0 50 1 0 1 1 0 8 0 nd6 112 23 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 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 32 111 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1553 0 47 95 0 95 95 0 8 0 ffsino 256 1553 0 47 95 0 95 95 0 8 0 nchpl 144 1740 0 47 63 0 63 63 0 8 0 vnodes 216 1634 0 0 91 0 91 91 0 8 0 namei 1024 4987 0 4985 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5631 0 5631 2 0 2 2 1 8 2 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 422 0 380 6 0 6 6 0 8 1 knotepl 120 2168 0 2121 2 0 2 2 0 8 0 kqueuepl 184 18 0 9 1 0 1 1 0 8 0 pipepl 304 112 0 85 3 0 3 3 0 8 0 fdescpl 448 409 0 380 5 0 5 5 0 8 1 filepl 120 1344 0 1137 7 0 7 7 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 63 0 52 1 0 1 1 0 8 0 zombiepl 144 380 0 380 1 0 1 1 0 8 1 processpl 1152 422 0 380 4 0 4 4 0 8 0 procpl 664 427 0 380 5 0 5 5 0 8 0 sockpl 552 125 0 98 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2452 0 2396 13 0 13 13 0 8 5 mcl2k 2048 179 0 176 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3972 0 3829 10 0 10 10 0 8 0 bufpl 280 2233 0 118 152 0 152 152 0 8 0 anonpl 24 92523 0 89736 22 0 22 22 0 187 3 amapchunkpl 152 7804 0 7413 16 0 16 16 0 158 0 amappl16 200 1739 0 1728 5 0 5 5 0 8 4 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 3 0 3 1 0 1 1 0 8 1 amappl13 176 433 0 431 1 0 1 1 0 8 0 amappl12 168 740 0 703 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 283 0 283 1 0 1 1 0 8 1 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 84 0 83 1 0 1 1 0 8 0 amappl6 120 270 0 258 1 0 1 1 0 8 0 amappl5 112 70 0 62 1 0 1 1 0 8 0 amappl4 104 373 0 349 1 0 1 1 0 8 0 amappl3 96 1242 0 1169 2 0 2 2 0 8 0 amappl2 88 510 0 445 2 0 2 2 0 8 0 amappl1 80 8730 0 8196 13 0 13 13 0 8 0 amappl 88 2138 0 2006 3 0 3 3 0 92 0 uvmvnodes 80 1634 0 0 34 0 34 34 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 409 0 380 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 409 0 380 1 0 1 1 0 8 0 vmmpekpl 168 4952 0 4930 2 0 2 2 0 8 0 vmmpepl 168 34160 0 32487 78 0 78 78 0 357 1 vmsppl 368 408 0 380 4 0 4 4 0 8 0 rwobjpl 40 14253 0 11827 26 0 26 26 0 8 0 pdppl 4096 824 0 760 98 18 80 80 0 8 16 pvpl 32 204874 0 197297 65 0 65 65 0 265 0 pmappl 216 408 0 380 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 363 0 18 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031507a50,0,ffff8000315079c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148b600,ffff800031507af8,ffff800031507a50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c192800,ffff80000147f9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147f9f0,fffffd806c192800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147f9f0,0,ffff800031507ca8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f101ca8,3,ffff800031507da0,808,ffff800031507e40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f101ca8,ffff800031507ef0,ffff800031507e40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031507ef0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031507ef0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3591b06f1c0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d37f810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031507a50,0,ffff8000315079c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148b600,ffff800031507af8,ffff800031507a50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c192800,ffff80000147f9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147f9f0,fffffd806c192800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147f9f0,0,ffff800031507ca8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f101ca8,3,ffff800031507da0,808,ffff800031507e40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f101ca8,ffff800031507ef0,ffff800031507e40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031507ef0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031507ef0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3591b06f1c0, count: -10