login: uvm_fault(0xffffffff83a3e3e8, 0xffff80000160d0ca, 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 *339491 4410 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f56e0,0,ffff80003c8f5650,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000163c900,ffff80003c8f5788,ffff80003c8f56e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f954100,ffff8000015f8460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8460,fffffd806f954100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8460,0,ffff80003c8f5938,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000320d2558,7,ffff80003c8f5a30,808,ffff80003c8f5ad0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000320d2558,ffff80003c8f5b80,ffff80003c8f5ad0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f5b80) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f5b80) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a010f23f20, 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, 0xffff80000160d0ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f56e0,0,ffff80003c8f5650,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000163c900,ffff80003c8f5788,ffff80003c8f56e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f954100,ffff8000015f8460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8460,fffffd806f954100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8460,0,ffff80003c8f5938,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000320d2558,7,ffff80003c8f5a30,808,ffff80003c8f5ad0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000320d2558,ffff80003c8f5b80,ffff80003c8f5ad0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f5b80) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f5b80) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a010f23f20, count: -10 ddb> show registers rdi 0xffff80002c4c6000 rsi 0xc3d rbp 0xffff80003c8f5530 rbx 0xde rdx 0xffff80002c4c6000 rcx 0xffff80000160cfe0 rax 0xfffffd806da554e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x755a18ca2897f968 r11 0xa97c33ecfeda19ec r12 0x19 r13 0xfffffd806da55400 r14 0xfffffd8066b7cbc8 r15 0xffff8000002a2058 rip 0xffffffff82228bb4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c8f54b0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=339491 pid=4410 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=0xffff8000320d3cb0,0xffffffff8399f700 process=0xffff8000ffff8498 user=0xffff80003c8f0000, vmspace=0xfffffd806cc985d0 estcpu=2, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4410 433212 82474 0 2 0 syz-executor * 4410 339491 82474 0 7 0x4000000 syz-executor 84603 434030 47349 0 2 0 syz-executor 84603 415446 47349 0 2 0x4000000 syz-executor 83522 179482 54098 0 2 0 syz-executor 83522 152316 54098 0 2 0x4000000 syz-executor 39503 449588 92917 0 2 0 syz-executor 39503 363151 92917 0 3 0x4000080 fsleep syz-executor 21115 504841 7488 0 2 0 syz-executor 21115 46639 7488 0 3 0x4000080 fsleep syz-executor 52417 10829 10963 0 2 0 syz-executor 52417 423845 10963 0 3 0x4000080 piperd syz-executor 3529 73728 85383 60928 2 0xc90 syz-executor 3529 320249 85383 60928 3 0x4000090 msgwait syz-executor 3529 231378 85383 60928 3 0x4000090 fsleep syz-executor 10051 502340 57525 0 2 0xc80 syz-executor 10051 383788 57525 0 3 0x4000080 kqpoll syz-executor 10051 52851 57525 0 3 0x4000080 fsleep syz-executor 7488 451638 28004 0 2 0xc82 syz-executor 47349 496476 28004 0 2 0xc82 syz-executor 92917 157877 28004 0 2 0xc82 syz-executor 10963 73940 28004 0 2 0xc82 syz-executor 57525 109804 28004 0 2 0xc82 syz-executor 82474 438666 28004 0 2 0xc82 syz-executor 54098 309383 28004 0 2 0xc82 syz-executor 85383 447203 28004 0 2 0xc82 syz-executor 28004 66922 34625 0 3 0x82 kqread syz-executor 34625 85088 87796 0 3 0x10008a sigsusp ksh 87796 400616 36145 0 3 0x98 kqread sshd-session 36145 470297 21750 0 3 0x92 kqread sshd-session 20104 110804 1 0 3 0x100083 ttyin getty 21750 24965 1 0 3 0x88 kqread sshd 9916 337832 12433 73 3 0x1100090 kqread syslogd 12433 412557 1 0 3 0x100082 sbwait syslogd 61290 261049 1 0 3 0x100080 kqread resolvd 13222 324335 59713 77 3 0x100092 kqread dhcpleased 65544 112696 59713 77 3 0x100092 kqread dhcpleased 59713 433331 1 0 3 0x80 kqread dhcpleased 2655 288538 0 0 3 0x14200 bored smr 6873 134567 0 0 2 0x14200 zerothread 18591 352827 0 0 3 0x14200 aiodoned aiodoned 62566 173516 0 0 3 0x14200 syncer update 84321 234579 0 0 3 0x14200 cleaner cleaner 81480 206851 0 0 3 0x14200 reaper reaper 50634 54339 0 0 3 0x14200 pgdaemon pagedaemon 2539 95858 0 0 3 0x14200 bored viomb 85923 358324 0 0 3 0x40014200 acpi0 acpi0 61335 34414 0 0 3 0x14200 bored softnet0 12281 517763 0 0 3 0x14200 bored systqmp 37988 423562 0 0 3 0x14200 bored systq 2451 117370 0 0 3 0x40014200 tmoslp softclock 6264 496165 0 0 3 0x40014200 idle0 1 3124 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 11036 12107K 12431K 166960K 12341 0 pcb 17 12K 12K 166960K 57 0 rtable 242 10K 10K 166960K 404 0 pf 34 13K 16K 166960K 48 0 ifaddr 43 7K 7K 166960K 53 0 ifgroup 52 2K 2K 166960K 62 0 sysctl 4 1K 9K 166960K 8 0 counters 34 17K 18K 166960K 47 0 ioctlops 0 0K 4K 166960K 53 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1416 89K 90K 166960K 1578 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 6 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 224 0 proc 60 59K 124K 166960K 508 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 77 0 in_multi 99 7K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 371 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 222 143K 157K 166960K 3754 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 39 78K 96K 166960K 1310 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 12 0K 2K 166960K 33 0 temp 43 9063K 9127K 166960K 8482 0 kqueue 17 26K 30K 166960K 51 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 44 0 40 1 0 1 1 0 8 0 rtentry 136 113 0 12 4 0 4 4 0 8 0 unpcb 144 85 0 67 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 35 0 31 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 328 209 0 202 7 0 7 7 0 8 6 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 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 ppxss 1072 14 0 13 1 0 1 1 0 8 0 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfrule 1360 1 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 483 0 41 31 0 31 31 0 8 1 art_table 40 485 0 41 5 0 5 5 0 8 0 art_node 32 113 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 6 0 2 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1754 0 298 92 0 92 92 0 8 0 ffsino 256 1754 0 298 92 0 92 92 0 8 0 nchpl 144 2046 0 353 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2012 0 0 112 0 112 112 0 8 0 namei 1024 6240 0 6240 2 0 2 2 0 8 2 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 34 0 10 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6627 0 6627 3 0 3 3 1 8 3 plimitpl 152 44 0 26 1 0 1 1 0 8 0 sigapl 424 516 0 473 6 0 6 6 0 8 1 knotepl 120 7607 0 7557 17 0 17 17 0 8 14 kqueuepl 184 57 0 44 1 0 1 1 0 8 0 pipepl 304 122 0 94 3 0 3 3 0 8 0 fdescpl 448 502 0 472 5 0 5 5 0 8 1 filepl 120 2135 0 1911 11 0 11 11 0 8 3 lockfpl 104 36 0 32 1 0 1 1 0 8 0 lockfspl 48 19 0 15 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 104 142 0 130 1 0 1 1 0 8 0 zombiepl 144 473 0 473 1 0 1 1 0 8 1 processpl 1152 516 0 473 4 0 4 4 0 8 0 procpl 664 651 0 598 6 0 6 6 0 8 1 sockpl 552 343 0 314 8 0 8 8 0 8 5 mcl64k 65536 7 0 7 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2574 0 2519 15 0 15 15 0 8 8 mcl2k 2048 219 0 214 1 0 1 1 0 8 0 mtagpl 96 7 0 6 1 0 1 1 0 8 0 mbufpl 256 5111 0 4961 10 0 10 10 0 8 0 bufpl 280 2427 0 106 166 0 166 166 0 8 0 anonpl 24 88392 0 85100 32 0 32 32 0 187 10 amapchunkpl 152 10667 0 10186 26 0 26 26 0 158 7 amappl16 200 1135 0 1104 4 0 4 4 0 8 2 amappl15 192 39 0 39 1 0 1 1 0 8 1 amappl14 184 408 0 407 1 0 1 1 0 8 0 amappl13 176 111 0 100 1 0 1 1 0 8 0 amappl12 168 749 0 720 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 56 0 46 1 0 1 1 0 8 0 amappl9 144 264 0 263 1 0 1 1 0 8 0 amappl8 136 101 0 99 1 0 1 1 0 8 0 amappl7 128 45 0 43 1 0 1 1 0 8 0 amappl6 120 246 0 236 1 0 1 1 0 8 0 amappl5 112 89 0 83 1 0 1 1 0 8 0 amappl4 104 428 0 396 2 0 2 2 0 8 1 amappl3 96 1750 0 1661 3 0 3 3 0 8 0 amappl2 88 625 0 564 2 0 2 2 0 8 0 amappl1 80 9489 0 8941 13 0 13 13 0 8 1 amappl 88 3049 0 2890 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 24 502 0 472 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 502 0 472 1 0 1 1 0 8 0 vmmpekpl 168 5701 0 5673 2 0 2 2 0 8 0 vmmpepl 168 39532 0 37705 86 0 86 86 0 357 6 vmsppl 368 501 0 472 4 0 4 4 0 8 1 rwobjpl 40 13505 0 12560 11 0 11 11 0 8 0 pdppl 4096 1010 0 944 96 28 68 82 0 8 2 pvpl 32 227851 0 218678 92 0 92 92 0 265 14 pmappl 216 501 0 472 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 361 0 28 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f56e0,0,ffff80003c8f5650,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000163c900,ffff80003c8f5788,ffff80003c8f56e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f954100,ffff8000015f8460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8460,fffffd806f954100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8460,0,ffff80003c8f5938,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000320d2558,7,ffff80003c8f5a30,808,ffff80003c8f5ad0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000320d2558,ffff80003c8f5b80,ffff80003c8f5ad0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f5b80) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f5b80) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a010f23f20, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8066b7cbc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f56e0,0,ffff80003c8f5650,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000163c900,ffff80003c8f5788,ffff80003c8f56e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f954100,ffff8000015f8460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8460,fffffd806f954100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8460,0,ffff80003c8f5938,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000320d2558,7,ffff80003c8f5a30,808,ffff80003c8f5ad0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000320d2558,ffff80003c8f5b80,ffff80003c8f5ad0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f5b80) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f5b80) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a010f23f20, count: -10