uvm_fault(0xffffffff839415c8, 0xffff80000148e0ca, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND * 1197 26111 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c999130,0,ffff80003c9990a0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148ad00,ffff80003c9991d8,ffff80003c999130,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8070b5a900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8070b5a900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003c999388,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c989780,3,ffff80003c999480,808,ffff80003c999520) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c989780,ffff80003c9995d0,ffff80003c999520) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9995d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9995d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e58d219b30, 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(0xffffffff839415c8, 0xffff80000148e0ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c999130,0,ffff80003c9990a0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148ad00,ffff80003c9991d8,ffff80003c999130,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8070b5a900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8070b5a900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003c999388,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c989780,3,ffff80003c999480,808,ffff80003c999520) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c989780,ffff80003c9995d0,ffff80003c999520) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9995d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9995d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e58d219b30, count: -10 ddb> show registers rdi 0xffff80002ad22000 rsi 0x95a rbp 0xffff80003c998f80 rbx 0xde rdx 0xffff80002ad22000 rcx 0xffff80000148dfe0 rax 0xfffffd8070b5aee0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x40afc153e30c0c21 r11 0xcac055c5f30bfb21 r12 0x1b r13 0xfffffd8070b5ae00 r14 0xfffffd80659751b0 r15 0xffff800000039058 rip 0xffffffff81af24a7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c998f00 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=1197 pid=26111 tcnt=2 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=0xffff80003c989a18,0xffffffff838e4900 process=0xffff80002d129218 user=0xffff80003c994000, vmspace=0xfffffd806ba47d00 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26111 102815 85648 0 2 0 syz-executor *26111 1197 85648 0 7 0x4000000 syz-executor 57558 427920 39201 0 2 0 syz-executor 45468 331429 82489 0 2 0 syz-executor 45468 108727 82489 0 3 0x4000080 fsleep syz-executor 45468 308177 82489 0 3 0x4000080 fsleep syz-executor 1736 381053 98996 0 2 0 syz-executor 1736 174655 98996 0 3 0x4000080 fsleep syz-executor 70741 497237 12540 0 2 0 syz-executor 70741 195326 12540 0 3 0x4000080 fsleep syz-executor 86415 270549 30964 0 2 0x2 ndp 97303 196988 27733 0 2 0x82000 syz-executor 97303 212078 27733 0 4 0x4082000 syz-executor 97303 312403 27733 0 3 0x4002000 suspend syz-executor 97303 209083 27733 0 4 0x4082000 syz-executor 56100 62265 16826 0 2 0 syz-executor 56100 274690 16826 0 3 0x4000080 fsleep syz-executor 30964 154813 58879 0 3 0x10008a sigsusp sh 16826 415786 34065 0 2 0xc82 syz-executor 98996 59062 34065 0 3 0x82 nanoslp syz-executor 12540 229275 34065 0 3 0x82 nanoslp syz-executor 82489 133923 34065 0 2 0xc82 syz-executor 39201 283411 34065 0 2 0xc82 syz-executor 58879 441026 34065 0 3 0x82 wait syz-executor 85648 340581 34065 0 3 0x82 nanoslp syz-executor 27733 210209 34065 0 2 0xc82 syz-executor 34065 244896 30159 0 3 0x82 kqread syz-executor 30159 117311 54072 0 3 0x10008a sigsusp ksh 54072 424951 85540 0 3 0x98 kqread sshd-session 85540 207329 5807 0 3 0x92 kqread sshd-session 38838 221656 1 0 3 0x100083 ttyin getty 5807 326349 1 0 3 0x88 kqread sshd 14455 97867 50916 73 3 0x1100090 kqread syslogd 50916 453228 1 0 3 0x100082 sbwait syslogd 72493 345410 1 0 3 0x100080 kqread resolvd 28514 395281 9867 77 3 0x100092 kqread dhcpleased 46369 188479 9867 77 3 0x100092 kqread dhcpleased 9867 415406 1 0 3 0x80 kqread dhcpleased 73538 362695 0 0 3 0x14200 bored smr 17906 261340 0 0 2 0x14200 zerothread 39071 141028 0 0 3 0x14200 aiodoned aiodoned 71617 443635 0 0 3 0x14200 syncer update 27680 513044 0 0 3 0x14200 cleaner cleaner 49870 319961 0 0 3 0x14200 reaper reaper 92536 118067 0 0 3 0x14200 pgdaemon pagedaemon 47714 443992 0 0 3 0x14200 bored viomb 54172 210496 0 0 3 0x40014200 acpi0 acpi0 17823 352034 0 0 3 0x14200 bored softnet7 93126 108972 0 0 3 0x14200 bored softnet6 65536 252647 0 0 3 0x14200 bored softnet5 59255 279166 0 0 3 0x14200 bored softnet4 67958 253883 0 0 3 0x14200 bored softnet3 81069 284570 0 0 3 0x14200 bored softnet2 4888 75811 0 0 3 0x14200 bored softnet1 69138 503190 0 0 2 0x14200 softnet0 24031 12020 0 0 3 0x14200 smrbar systqmp 47251 154590 0 0 3 0x14200 bored systq 19768 449868 0 0 3 0x40014200 tmoslp softclock 86074 116718 0 0 3 0x40014200 idle0 1 362891 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 10170 11040K 11053K 166960K 11247 0 pcb 17 12K 12K 166960K 17 0 rtable 214 7K 7K 166960K 280 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 iov 0 0K 8K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1350 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 19 69K 81K 166960K 142 0 sigio 0 0K 0K 166960K 1 0 proc 58 66K 100K 166960K 473 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 1 0 in_multi 99 7K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 31 148K 148K 166960K 31 0 exec 0 0K 1K 166960K 344 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 223 160K 174K 166960K 2765 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 41 82K 88K 166960K 1164 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 34 8630K 8694K 166960K 3665 0 kqueue 13 20K 20K 166960K 21 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 99 0 4 4 0 4 4 0 8 0 unpcb 144 42 0 24 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 8 0 3 1 0 1 1 0 8 0 arp 88 11 0 1 1 0 1 1 0 8 0 inpcb 328 58 0 50 2 0 2 2 0 8 1 nd6 104 16 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 256 438 0 0 28 0 28 28 0 8 0 art_table 40 440 0 0 5 0 5 5 0 8 0 art_node 32 99 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1549 0 46 94 0 94 94 0 8 0 ffsino 256 1549 0 46 94 0 94 94 0 8 0 nchpl 144 1743 0 59 63 0 63 63 0 8 0 uvmvnodes 80 1630 0 0 34 0 34 34 0 8 0 vnodes 216 1630 0 0 91 0 91 91 0 8 0 namei 1024 5105 0 5105 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6196 0 6196 8 0 8 8 1 8 8 plimitpl 152 27 0 11 1 0 1 1 0 8 0 sigapl 424 423 0 372 7 0 7 7 0 8 1 knotepl 120 3380 0 3333 2 0 2 2 0 8 0 kqueuepl 184 19 0 9 1 0 1 1 0 8 0 pipepl 304 98 0 71 3 0 3 3 0 8 0 fdescpl 448 403 0 372 4 0 4 4 0 8 0 filepl 120 1296 0 1085 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 71 0 60 1 0 1 1 0 8 0 zombiepl 144 372 0 372 1 0 1 1 0 8 1 processpl 1152 423 0 372 4 0 4 4 0 8 0 procpl 664 437 0 377 6 0 6 6 0 8 0 sockpl 552 137 0 107 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2427 0 2373 13 0 13 13 0 8 5 mcl2k 2048 157 0 156 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3859 0 3725 10 0 10 10 0 8 1 bufpl 280 2814 0 117 193 0 193 193 0 8 0 anonpl 24 81268 0 78228 23 0 23 23 0 187 4 amapchunkpl 152 7906 0 7443 22 0 22 22 0 158 4 amappl16 200 1125 0 1113 4 0 4 4 0 8 3 amappl15 192 64 0 64 1 0 1 1 0 8 1 amappl14 184 100 0 89 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 0 1 1 0 8 1 amappl12 168 1008 0 978 2 0 2 2 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 0 1 1 0 8 1 amappl9 144 254 0 254 1 0 1 1 0 8 1 amappl8 136 31 0 30 1 0 1 1 0 8 0 amappl7 128 93 0 82 1 0 1 1 0 8 0 amappl6 120 165 0 161 1 0 1 1 0 8 0 amappl5 112 110 0 104 1 0 1 1 0 8 0 amappl4 104 260 0 245 1 0 1 1 0 8 0 amappl3 96 1218 0 1112 3 0 3 3 0 8 0 amappl2 88 605 0 548 2 0 2 2 0 8 0 amappl1 80 7857 0 7278 13 0 13 13 0 8 0 amappl 88 2141 0 1986 4 0 4 4 0 92 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 24 403 0 372 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 403 0 372 1 0 1 1 0 8 0 vmmpekpl 168 4740 0 4717 2 0 2 2 0 8 0 vmmpepl 168 31677 0 29818 81 0 81 81 0 357 0 vmsppl 368 402 0 372 4 0 4 4 0 8 0 rwobjpl 40 12814 0 10321 26 0 26 26 0 8 0 pdppl 4096 812 0 744 88 14 74 74 0 8 6 pvpl 32 190887 0 182788 66 0 66 66 0 265 0 pmappl 216 402 0 372 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 349 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c999130,0,ffff80003c9990a0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148ad00,ffff80003c9991d8,ffff80003c999130,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8070b5a900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8070b5a900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003c999388,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c989780,3,ffff80003c999480,808,ffff80003c999520) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c989780,ffff80003c9995d0,ffff80003c999520) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9995d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9995d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e58d219b30, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80659751b0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c999130,0,ffff80003c9990a0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148ad00,ffff80003c9991d8,ffff80003c999130,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8070b5a900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8070b5a900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003c999388,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c989780,3,ffff80003c999480,808,ffff80003c999520) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c989780,ffff80003c9995d0,ffff80003c999520) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9995d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9995d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e58d219b30, count: -10