uvm_fault(0xffffffff839774e0, 0xffff80000149208a, 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 *485758 8201 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031d3d5d0,0,ffff800031d3d540,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148fc00,ffff800031d3d678,ffff800031d3d5d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806dcd1000,ffff800001419c10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001419c10,fffffd806dcd1000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001419c10,0,ffff800031d3d828,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a822fa8,3,ffff800031d3d920,808,ffff800031d3d9c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a822fa8,ffff800031d3da70,ffff800031d3d9c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d3da70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d3da70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x435be7bc830, 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(0xffffffff839774e0, 0xffff80000149208a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031d3d5d0,0,ffff800031d3d540,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148fc00,ffff800031d3d678,ffff800031d3d5d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806dcd1000,ffff800001419c10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001419c10,fffffd806dcd1000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001419c10,0,ffff800031d3d828,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a822fa8,3,ffff800031d3d920,808,ffff800031d3d9c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a822fa8,ffff800031d3da70,ffff800031d3d9c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d3da70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d3da70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x435be7bc830, count: -10 ddb> show registers rdi 0xffff80002a928000 rsi 0x939 rbp 0xffff800031d3d420 rbx 0xde rdx 0xffff80002a928000 rcx 0xffff800001491fa0 rax 0xfffffd806dcd1ee0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xd9bd509eec651f28 r11 0x50907dcab049e9d0 r12 0x1a r13 0xfffffd806dcd1e00 r14 0xfffffd8068c1c700 r15 0xffff800000039058 rip 0xffffffff819690a7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800031d3d3a0 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=485758 pid=8201 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=0xffff80002a823240,0xffff80002a823cb0 process=0xffff80002cd30008 user=0xffff800031d38000, vmspace=0xfffffd806bbd4180 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8765 68794 63071 0 2 0 syz-executor 8765 135331 63071 0 2 0x4000000 syz-executor 87740 247815 38690 0 2 0 syz-executor 87740 467868 38690 0 3 0x4000080 fsleep syz-executor 53060 382031 40505 0 2 0 syz-executor 53060 442266 40505 0 3 0x4000080 fsleep syz-executor 95052 304540 50245 0 2 0 syz-executor 95052 171747 50245 0 3 0x4000080 fsleep syz-executor 4212 188364 57940 0 2 0 syz-executor 4212 98179 57940 0 3 0x4000080 fsleep syz-executor 7702 145694 94282 0 2 0 syz-executor 7702 214587 94282 0 3 0x4000080 fsleep syz-executor 85378 231064 43425 0 2 0 syz-executor 85378 115429 43425 0 3 0x4000080 fsleep syz-executor 8201 51473 37483 0 2 0 syz-executor * 8201 485758 37483 0 7 0x4000000 syz-executor 38690 331424 367 0 3 0x82 nanoslp syz-executor 40505 512756 367 0 3 0x82 nanoslp syz-executor 50245 154009 367 0 3 0x82 nanoslp syz-executor 63071 462832 367 0 3 0x82 nanoslp syz-executor 94282 319644 367 0 3 0x82 nanoslp syz-executor 43425 103438 367 0 3 0x82 nanoslp syz-executor 57940 42279 367 0 3 0x82 nanoslp syz-executor 37483 140909 367 0 3 0x82 nanoslp syz-executor 367 52937 44856 0 3 0x82 kqread syz-executor 44856 57401 5051 0 3 0x10008a sigsusp ksh 5051 512358 40099 0 3 0x98 kqread sshd-session 40099 456881 73564 0 3 0x92 kqread sshd-session 22084 224851 1 0 3 0x100083 ttyin getty 73564 130128 1 0 3 0x88 kqread sshd 71389 161634 61845 73 3 0x1100090 kqread syslogd 61845 36901 1 0 3 0x100082 sbwait syslogd 79096 404999 1 0 3 0x100080 kqread resolvd 5365 99619 45417 77 3 0x100092 kqread dhcpleased 52653 216331 45417 77 3 0x100092 kqread dhcpleased 45417 86487 1 0 3 0x80 kqread dhcpleased 63685 353713 0 0 3 0x14200 bored smr 75948 8844 0 0 2 0x14200 zerothread 25827 28743 0 0 3 0x14200 aiodoned aiodoned 1833 249373 0 0 3 0x14200 syncer update 70057 159267 0 0 3 0x14200 cleaner cleaner 79253 100756 0 0 3 0x14200 reaper reaper 28466 181343 0 0 3 0x14200 pgdaemon pagedaemon 42082 173697 0 0 3 0x14200 bored viomb 31589 358750 0 0 3 0x40014200 acpi0 acpi0 50800 482075 0 0 3 0x14200 bored softnet7 88045 330230 0 0 3 0x14200 bored softnet6 25943 333825 0 0 3 0x14200 bored softnet5 49813 16482 0 0 3 0x14200 bored softnet4 55187 239398 0 0 3 0x14200 bored softnet3 59904 164612 0 0 3 0x14200 bored softnet2 38376 238688 0 0 3 0x14200 bored softnet1 52734 511216 0 0 3 0x14200 bored softnet0 42240 309015 0 0 3 0x14200 bored systqmp 56624 127129 0 0 3 0x14200 bored systq 49661 119713 0 0 3 0x40014200 tmoslp softclock 86240 227599 0 0 3 0x40014200 idle0 1 220881 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 10177 11073K 11073K 166960K 11254 0 pcb 19 12K 12K 166960K 21 0 rtable 214 7K 7K 166960K 276 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 1340 84K 84K 166960K 1356 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 18 65K 93K 166960K 139 0 proc 57 58K 100K 166960K 472 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 4 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 347 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 212 150K 159K 166960K 2859 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 94K 166960K 1171 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 2 0 NDP 27 2K 2K 166960K 27 0 temp 34 8630K 8694K 166960K 3655 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 38 0 34 1 0 1 1 0 8 0 rtentry 136 96 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 2 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 59 0 48 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 256 437 0 0 28 0 28 28 0 8 0 art_table 40 439 0 0 5 0 5 5 0 8 0 art_node 32 96 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1548 0 43 95 0 95 95 0 8 0 ffsino 256 1548 0 43 95 0 95 95 0 8 0 nchpl 144 1735 0 48 63 0 63 63 0 8 0 uvmvnodes 80 1632 0 0 34 0 34 34 0 8 0 vnodes 216 1632 0 0 91 0 91 91 0 8 0 namei 1024 5060 0 5060 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6184 0 6184 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 423 0 373 7 0 7 7 0 8 1 knotepl 120 2600 0 2553 2 0 2 2 0 8 0 kqueuepl 184 17 0 8 1 0 1 1 0 8 0 pipepl 304 99 0 72 3 0 3 3 0 8 0 fdescpl 448 403 0 373 5 0 5 5 0 8 1 filepl 120 1280 0 1068 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 64 0 53 1 0 1 1 0 8 0 zombiepl 144 373 0 373 1 0 1 1 0 8 1 processpl 1168 423 0 373 5 0 5 5 0 8 1 procpl 664 432 0 374 5 0 5 5 0 8 0 sockpl 552 128 0 98 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2441 0 2388 17 2 15 17 0 8 6 mcl2k 2048 149 0 148 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3745 0 3613 9 0 9 9 0 8 0 bufpl 280 2816 0 117 193 0 193 193 0 8 0 anonpl 24 78450 0 75457 23 0 23 23 0 187 3 amapchunkpl 152 7728 0 7281 18 0 18 18 0 158 0 amappl16 200 1027 0 1013 4 0 4 4 0 8 3 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 101 0 91 1 0 1 1 0 8 0 amappl12 168 1014 0 984 3 0 3 3 0 8 1 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 0 1 1 0 8 1 amappl9 144 262 0 262 1 0 1 1 0 8 1 amappl8 136 16 0 15 1 0 1 1 0 8 0 amappl7 128 96 0 86 1 0 1 1 0 8 0 amappl6 120 173 0 170 1 0 1 1 0 8 0 amappl5 112 109 0 103 1 0 1 1 0 8 0 amappl4 104 269 0 253 1 0 1 1 0 8 0 amappl3 96 1168 0 1066 3 0 3 3 0 8 0 amappl2 88 610 0 556 2 0 2 2 0 8 0 amappl1 80 7918 0 7364 14 0 14 14 0 8 1 amappl 88 2223 0 2076 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 0 373 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 403 0 373 1 0 1 1 0 8 0 vmmpekpl 168 4745 0 4724 2 0 2 2 0 8 0 vmmpepl 168 31640 0 29806 80 0 80 80 0 357 0 vmsppl 368 402 0 373 4 0 4 4 0 8 1 rwobjpl 40 12695 0 10256 26 0 26 26 0 8 0 pdppl 4096 812 0 746 94 14 80 80 0 8 14 pvpl 32 188158 0 179782 68 0 68 68 0 265 0 pmappl 216 402 0 373 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 366 0 16 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031d3d5d0,0,ffff800031d3d540,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148fc00,ffff800031d3d678,ffff800031d3d5d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806dcd1000,ffff800001419c10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001419c10,fffffd806dcd1000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001419c10,0,ffff800031d3d828,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a822fa8,3,ffff800031d3d920,808,ffff800031d3d9c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a822fa8,ffff800031d3da70,ffff800031d3d9c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d3da70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d3da70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x435be7bc830, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8068c1c700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031d3d5d0,0,ffff800031d3d540,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148fc00,ffff800031d3d678,ffff800031d3d5d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806dcd1000,ffff800001419c10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001419c10,fffffd806dcd1000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001419c10,0,ffff800031d3d828,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a822fa8,3,ffff800031d3d920,808,ffff800031d3d9c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a822fa8,ffff800031d3da70,ffff800031d3d9c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d3da70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d3da70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x435be7bc830, count: -10