uvm_fault(0xffffffff83844320, 0xffff8000014a00aa, 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 *393829 18318 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800033d3d170,0,ffff800033d3d0e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001481a00,ffff800033d3d218,ffff800033d3d170,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80608cc500,ffff80000148f5a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000148f5a8,fffffd80608cc500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000148f5a8,0,ffff800033d3d3c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,3,ffff800033d3d4c0,808,ffff800033d3d560) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800033d3d610,ffff800033d3d560) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033d3d610) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033d3d610) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x292aef50d90, 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(0xffffffff83844320, 0xffff8000014a00aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800033d3d170,0,ffff800033d3d0e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001481a00,ffff800033d3d218,ffff800033d3d170,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80608cc500,ffff80000148f5a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000148f5a8,fffffd80608cc500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000148f5a8,0,ffff800033d3d3c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,3,ffff800033d3d4c0,808,ffff800033d3d560) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800033d3d610,ffff800033d3d560) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033d3d610) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033d3d610) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x292aef50d90, count: -10 ddb> show registers rdi 0xffff80002f12c000 rsi 0x8c3 rbp 0xffff800033d3cfc0 rbx 0xde rdx 0xffff80002f12c000 rcx 0xffff80000149ffc0 rax 0xfffffd80608cc6e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xfc00c2be7f78b23c r11 0xbb8b4809c3a443f2 r12 0x1b r13 0xfffffd80608cc600 r14 0xfffffd80602d8700 r15 0xffff800000039058 rip 0xffffffff81364a57 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800033d3cf40 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=393829 pid=18318 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=0xffff80002a7f4550,0xffffffff8396f700 process=0xffff8000ffff4918 user=0xffff800033d38000, vmspace=0xfffffd806ba7f460 estcpu=6, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 18318 195100 84144 0 2 0 syz-executor *18318 393829 84144 0 7 0x4000000 syz-executor 40939 114997 86750 0 2 0 syz-executor 40939 184106 86750 0 3 0x4000080 fsleep syz-executor 59993 481761 90776 0 2 0 syz-executor 59993 470253 90776 0 3 0x4000080 fsleep syz-executor 25005 494231 73948 0 3 0x80 nanoslp syz-executor 25005 498576 73948 0 2 0x4000000 syz-executor 25005 210536 73948 0 3 0x4000080 fsleep syz-executor 11066 229321 97803 0 2 0 syz-executor 11066 509529 97803 0 3 0x4000080 fsleep syz-executor 23672 468610 10175 0 2 0 syz-executor 23672 491218 10175 0 3 0x4000080 fsleep syz-executor 10175 188888 28879 0 3 0x82 nanoslp syz-executor 73948 96331 28879 0 3 0x82 nanoslp syz-executor 37091 381562 28879 0 2 0x2 syz-executor 51335 57965 28879 0 2 0x2 syz-executor 97803 265677 28879 0 2 0xc82 syz-executor 84144 235956 28879 0 3 0x82 nanoslp syz-executor 86750 48218 28879 0 2 0xc82 syz-executor 90776 142985 28879 0 2 0xc82 syz-executor 28879 277001 99464 0 3 0x82 kqread syz-executor 99464 236661 74148 0 3 0x10008a sigsusp ksh 74148 33231 12266 0 3 0x98 kqread sshd-session 12266 452473 29598 0 3 0x92 kqread sshd-session 8863 102463 1 0 3 0x100083 ttyin getty 29598 299180 1 0 3 0x88 kqread sshd 77616 330582 73768 73 3 0x1100090 kqread syslogd 73768 488151 1 0 3 0x100082 sbwait syslogd 8083 428085 1 0 3 0x100080 kqread resolvd 94292 146006 30135 77 3 0x100092 kqread dhcpleased 17418 192434 30135 77 3 0x100092 kqread dhcpleased 30135 386089 1 0 3 0x80 kqread dhcpleased 24131 66027 0 0 2 0x14200 smr 4419 301073 0 0 2 0x14200 zerothread 35479 398631 0 0 3 0x14200 aiodoned aiodoned 1243 511202 0 0 3 0x14200 syncer update 74690 58199 0 0 3 0x14200 cleaner cleaner 29697 59827 0 0 3 0x14200 reaper reaper 44408 88125 0 0 3 0x14200 pgdaemon pagedaemon 91380 469801 0 0 3 0x14200 bored viomb 51120 501427 0 0 3 0x40014200 acpi0 acpi0 24317 334236 0 0 3 0x14200 bored softnet7 75418 158893 0 0 3 0x14200 bored softnet6 51725 508157 0 0 3 0x14200 bored softnet5 92039 374645 0 0 3 0x14200 bored softnet4 29417 473688 0 0 3 0x14200 bored softnet3 94835 296805 0 0 3 0x14200 bored softnet2 24673 399127 0 0 3 0x14200 bored softnet1 52075 464152 0 0 3 0x14200 bored softnet0 30070 396710 0 0 3 0x14200 bored systqmp 57082 54094 0 0 3 0x14200 bored systq 74731 185385 0 0 3 0x40014200 tmoslp softclock 65861 168598 0 0 3 0x40014200 idle0 1 256963 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 10173 11043K 11108K 166960K 11268 0 pcb 18 12K 12K 166960K 26 0 rtable 214 7K 7K 166960K 279 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 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1336 84K 84K 166960K 1363 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 16 57K 85K 166960K 230 0 proc 59 59K 91K 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 ip_moptions 0 0K 0K 166960K 2 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 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 347 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 206 150K 158K 166960K 3528 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 90K 166960K 1262 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 17 0K 1K 166960K 27 0 temp 36 8634K 8698K 166960K 4021 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 42 0 38 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 41 0 25 1 0 1 1 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 10 0 5 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 72 0 64 1 0 1 1 0 8 0 nd6 104 16 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 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 256 436 0 0 28 0 28 28 0 8 0 art_table 40 438 0 0 5 0 5 5 0 8 0 art_node 32 96 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1645 0 141 95 0 95 95 0 8 0 ffsino 256 1645 0 141 95 0 95 95 0 8 0 nchpl 144 1926 0 253 63 0 63 63 0 8 0 uvmvnodes 80 1736 0 0 36 0 36 36 0 8 0 vnodes 216 1736 0 0 97 0 97 97 0 8 0 namei 1024 5479 0 5478 2 1 1 2 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6760 0 6760 8 7 1 8 1 8 1 plimitpl 152 28 0 12 1 0 1 1 0 8 0 sigapl 424 514 0 466 7 1 6 7 0 8 0 knotepl 120 5537 0 5490 2 0 2 2 0 8 0 kqueuepl 184 20 0 11 1 0 1 1 0 8 0 pipepl 304 100 0 73 3 0 3 3 0 8 0 fdescpl 448 494 0 466 4 0 4 4 0 8 0 filepl 120 1437 0 1228 7 0 7 7 0 8 0 lockfpl 104 12 0 10 1 0 1 1 0 8 0 lockfspl 48 7 0 5 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 104 74 0 63 1 0 1 1 0 8 0 zombiepl 144 466 0 466 2 1 1 1 0 8 1 processpl 1152 514 0 466 4 0 4 4 0 8 0 procpl 664 616 0 561 5 0 5 5 0 8 0 sockpl 552 159 0 130 4 1 3 3 0 8 0 mcl64k 65536 5 0 5 2 1 1 1 0 8 1 mcl16k 16384 9 0 9 2 1 1 1 0 8 1 mcl12k 12288 13 0 13 2 1 1 1 0 8 1 mcl9k 9216 7 0 7 2 1 1 1 0 8 1 mcl8k 8192 51 0 51 1 0 1 1 0 8 1 mcl4k 4096 2542 0 2491 13 6 7 13 0 8 0 mcl2k 2048 161 0 160 2 1 1 1 0 8 0 mtagpl 96 5 0 5 2 1 1 1 0 8 1 mbufpl 256 4619 0 4473 10 0 10 10 0 8 0 bufpl 280 2912 0 117 200 0 200 200 0 8 0 anonpl 24 100664 0 97779 23 5 18 23 0 187 0 amapchunkpl 152 10353 0 9937 19 2 17 17 0 158 0 amappl16 200 1807 0 1788 6 4 2 5 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 104 0 94 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1104 0 1076 2 0 2 2 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 27 0 25 1 0 1 1 0 8 0 amappl7 128 99 0 89 1 0 1 1 0 8 0 amappl6 120 171 0 168 1 0 1 1 0 8 0 amappl5 112 127 0 121 1 0 1 1 0 8 0 amappl4 104 260 0 246 1 0 1 1 0 8 0 amappl3 96 1791 0 1694 3 0 3 3 0 8 0 amappl2 88 616 0 564 2 0 2 2 0 8 0 amappl1 80 8339 0 7793 13 0 13 13 0 8 1 amappl 88 2893 0 2749 4 0 4 4 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 494 0 466 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 494 0 466 1 0 1 1 0 8 0 vmmpekpl 168 5259 0 5232 2 0 2 2 0 8 0 vmmpepl 168 37358 0 35633 82 3 79 79 0 357 1 vmsppl 368 493 0 466 4 1 3 4 0 8 0 rwobjpl 40 14453 0 11907 26 0 26 26 0 8 0 pdppl 4096 994 0 932 94 26 68 76 0 8 6 pvpl 32 232227 0 224249 69 3 66 66 0 265 1 pmappl 216 493 0 466 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 362 0 40 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800033d3d170,0,ffff800033d3d0e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001481a00,ffff800033d3d218,ffff800033d3d170,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80608cc500,ffff80000148f5a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000148f5a8,fffffd80608cc500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000148f5a8,0,ffff800033d3d3c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,3,ffff800033d3d4c0,808,ffff800033d3d560) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800033d3d610,ffff800033d3d560) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033d3d610) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033d3d610) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x292aef50d90, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80602d8700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800033d3d170,0,ffff800033d3d0e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001481a00,ffff800033d3d218,ffff800033d3d170,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80608cc500,ffff80000148f5a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000148f5a8,fffffd80608cc500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000148f5a8,0,ffff800033d3d3c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,3,ffff800033d3d4c0,808,ffff800033d3d560) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800033d3d610,ffff800033d3d560) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033d3d610) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033d3d610) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x292aef50d90, count: -10