uvm_fault(0xffffffff838f0b68, 0xffff8000015c506a, 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 *397351 62035 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038503510,0,ffff800038503480,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015bb200,ffff8000385035b8,ffff800038503510,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e6b8400,ffff80000159d150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000159d150,fffffd806e6b8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000159d150,0,ffff800038503768,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bc2b0,3,ffff800038503860,808,ffff800038503900) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bc2b0,ffff8000385039b0,ffff800038503900) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000385039b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000385039b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf32d25a5f0, 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(0xffffffff838f0b68, 0xffff8000015c506a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038503510,0,ffff800038503480,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015bb200,ffff8000385035b8,ffff800038503510,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e6b8400,ffff80000159d150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000159d150,fffffd806e6b8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000159d150,0,ffff800038503768,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bc2b0,3,ffff800038503860,808,ffff800038503900) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bc2b0,ffff8000385039b0,ffff800038503900) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000385039b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000385039b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf32d25a5f0, count: -10 ddb> show registers rdi 0xffff80002ccec000 rsi 0x94f rbp 0xffff800038503360 rbx 0xde rdx 0xffff80002ccec000 rcx 0xffff8000015c4f80 rax 0xfffffd8070bb8de0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xb062fb6113dc4d4 r11 0x791380d391a97aff r12 0x18 r13 0xfffffd8070bb8d00 r14 0xfffffd806c77a3d0 r15 0xffff8000002a2058 rip 0xffffffff820cb8f4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000385032e0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=397351 pid=62035 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=0xffff80002a7bcfa8,0xffff80002a7bc7f0 process=0xffff8000ffff9698 user=0xffff8000384fe000, vmspace=0xfffffd806c809018 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69884 171231 9890 0 2 0 syz-executor 69884 49821 9890 0 2 0x4000000 syz-executor 48516 208277 21448 0 2 0 syz-executor 48516 29616 21448 0 2 0x4000000 syz-executor 62035 118064 56957 0 2 0 syz-executor *62035 397351 56957 0 7 0x4000000 syz-executor 11420 204531 13530 0 2 0 syz-executor 11420 509017 13530 0 2 0x4000000 syz-executor 32417 396312 1571 0 2 0x2 sh 44730 483433 49882 0 2 0 syz-executor 44730 463165 49882 0 3 0x4000080 ttyout syz-executor 97962 337079 60467 -1 2 0x10 syz-executor 97962 210025 60467 -1 3 0x4000090 sbwait syz-executor 13530 147119 96612 0 3 0x82 nanoslp syz-executor 49882 198597 96612 0 2 0xc82 syz-executor 9890 119568 96612 0 2 0x2 syz-executor 1571 311410 96612 0 3 0x82 wait syz-executor 21448 149785 96612 0 2 0xc82 syz-executor 97853 191948 96612 0 3 0x82 piperd syz-executor 56957 46095 96612 0 2 0xc82 syz-executor 60467 145371 96612 0 2 0xc82 syz-executor 96612 430257 27395 0 2 0x2 syz-executor 27395 378893 35277 0 3 0x10008a sigsusp ksh 35277 408822 80124 0 3 0x98 kqread sshd-session 80124 489705 72894 0 3 0x92 kqread sshd-session 38969 355 1 0 3 0x100083 ttyin getty 72894 450727 1 0 3 0x88 kqread sshd 74267 323027 16248 73 3 0x1100090 kqread syslogd 16248 517132 1 0 3 0x100082 sbwait syslogd 28746 11507 1 0 3 0x100080 kqread resolvd 50391 508252 33508 77 3 0x100092 kqread dhcpleased 34816 266773 33508 77 3 0x100092 kqread dhcpleased 33508 45289 1 0 3 0x80 kqread dhcpleased 48434 442940 0 0 3 0x14200 bored smr 56783 419666 0 0 2 0x14200 zerothread 63516 95083 0 0 3 0x14200 aiodoned aiodoned 30203 264280 0 0 3 0x14200 syncer update 92099 290184 0 0 3 0x14200 cleaner cleaner 93873 265471 0 0 3 0x14200 reaper reaper 55456 198490 0 0 3 0x14200 pgdaemon pagedaemon 76670 7317 0 0 3 0x14200 bored viomb 13843 47510 0 0 3 0x40014200 acpi0 acpi0 8034 283074 0 0 3 0x14200 bored softnet0 69484 417703 0 0 3 0x14200 smrbar systqmp 47209 300858 0 0 3 0x14200 bored systq 48352 487291 0 0 3 0x40014200 tmoslp softclock 39210 172241 0 0 3 0x40014200 idle0 1 406782 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 11029 12102K 12135K 166960K 12124 0 pcb 17 12K 12K 166960K 22 0 rtable 238 7K 7K 166960K 363 0 pf 30 12K 12K 166960K 30 0 ifaddr 40 7K 7K 166960K 42 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 33 0 ioctlops 0 0K 2K 166960K 95 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 84K 166960K 1368 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 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 152 0 sigio 0 0K 0K 166960K 3 0 proc 59 59K 100K 166960K 475 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 89 6K 6K 166960K 89 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 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 349 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 206 150K 159K 166960K 2926 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 38 76K 94K 166960K 1193 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 25 1K 1K 166960K 25 0 temp 35 8662K 8726K 166960K 3746 0 kqueue 13 20K 22K 166960K 23 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 136 105 0 1 4 0 4 4 0 8 0 unpcb 144 42 0 25 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 13 0 8 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 71 0 63 2 0 2 2 0 8 1 nd6 112 21 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 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 256 412 0 0 26 0 26 26 0 8 0 art_table 40 414 0 0 5 0 5 5 0 8 0 art_node 32 105 0 8 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1587 0 82 95 0 95 95 0 8 0 ffsino 256 1587 0 82 95 0 95 95 0 8 0 nchpl 144 1808 0 120 63 0 63 63 0 8 0 vnodes 216 1673 0 0 93 0 93 93 0 8 0 namei 1024 5276 0 5276 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5738 0 5738 3 0 3 3 1 8 3 plimitpl 152 31 0 14 1 0 1 1 0 8 0 sigapl 424 432 0 390 6 0 6 6 0 8 0 knotepl 120 3387 0 3340 2 0 2 2 0 8 0 kqueuepl 184 21 0 11 1 0 1 1 0 8 0 pipepl 304 112 0 85 3 0 3 3 0 8 0 fdescpl 448 419 0 390 5 0 5 5 0 8 1 filepl 120 1445 0 1229 7 0 7 7 0 8 0 lockfpl 104 8 0 6 1 0 1 1 0 8 0 lockfspl 48 5 0 3 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 91 0 79 1 0 1 1 0 8 0 zombiepl 144 390 0 390 1 0 1 1 0 8 1 processpl 1152 432 0 390 4 0 4 4 0 8 0 procpl 664 464 0 416 5 0 5 5 0 8 0 sockpl 552 151 0 122 3 0 3 3 0 8 0 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2447 0 2393 14 0 14 14 0 8 7 mcl2k 2048 114 0 114 1 0 1 1 0 8 1 mtagpl 96 3 0 3 1 0 1 1 0 8 1 mbufpl 256 4224 0 4098 12 0 12 12 0 8 4 bufpl 280 2262 0 118 154 0 154 154 0 8 0 anonpl 24 72943 0 70059 20 0 20 20 0 187 1 amapchunkpl 152 7814 0 7408 18 0 18 18 0 158 1 amappl16 200 816 0 797 4 0 4 4 0 8 3 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 23 0 23 1 0 1 1 0 8 1 amappl13 176 415 0 414 1 0 1 1 0 8 0 amappl12 168 743 0 706 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 41 0 31 1 0 1 1 0 8 0 amappl9 144 279 0 279 1 0 1 1 0 8 1 amappl8 136 15 0 14 1 0 1 1 0 8 0 amappl7 128 77 0 74 1 0 1 1 0 8 0 amappl6 120 252 0 240 1 0 1 1 0 8 0 amappl5 112 64 0 57 1 0 1 1 0 8 0 amappl4 104 360 0 336 1 0 1 1 0 8 0 amappl3 96 1273 0 1199 3 0 3 3 0 8 1 amappl2 88 517 0 451 2 0 2 2 0 8 0 amappl1 80 8662 0 8127 13 0 13 13 0 8 1 amappl 88 2264 0 2126 4 0 4 4 0 92 0 uvmvnodes 80 95 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 419 0 390 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 419 0 390 1 0 1 1 0 8 0 vmmpekpl 168 5047 0 5022 2 0 2 2 0 8 0 vmmpepl 168 33417 0 31721 79 0 79 79 0 357 3 vmsppl 368 418 0 390 4 0 4 4 0 8 0 rwobjpl 40 11809 0 10916 11 0 11 11 0 8 1 pdppl 4096 845 0 780 95 14 81 81 0 8 16 pvpl 32 186992 0 179009 69 0 69 69 0 265 1 pmappl 216 418 0 390 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 361 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038503510,0,ffff800038503480,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015bb200,ffff8000385035b8,ffff800038503510,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e6b8400,ffff80000159d150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000159d150,fffffd806e6b8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000159d150,0,ffff800038503768,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bc2b0,3,ffff800038503860,808,ffff800038503900) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bc2b0,ffff8000385039b0,ffff800038503900) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000385039b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000385039b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf32d25a5f0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c77a3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038503510,0,ffff800038503480,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015bb200,ffff8000385035b8,ffff800038503510,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e6b8400,ffff80000159d150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000159d150,fffffd806e6b8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000159d150,0,ffff800038503768,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7bc2b0,3,ffff800038503860,808,ffff800038503900) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7bc2b0,ffff8000385039b0,ffff800038503900) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000385039b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000385039b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf32d25a5f0, count: -10