uvm_fault(0xffffffff839687e0, 0xffff8000014c708a, 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 * 70546 53828 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9691e0,0,ffff80003c969150,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148f100,ffff80003c969288,ffff80003c9691e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806caf1b00,ffff8000014bbc30) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014bbc30,fffffd806caf1b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014bbc30,0,ffff80003c969438,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c946558,4,ffff80003c969530,808,ffff80003c9695d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c946558,ffff80003c969680,ffff80003c9695d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969680) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969680) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d650e47c40, 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(0xffffffff839687e0, 0xffff8000014c708a, 0, 1) -> e ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9691e0,0,ffff80003c969150,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148f100,ffff80003c969288,ffff80003c9691e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806caf1b00,ffff8000014bbc30) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014bbc30,fffffd806caf1b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014bbc30,0,ffff80003c969438,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c946558,4,ffff80003c969530,808,ffff80003c9695d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c946558,ffff80003c969680,ffff80003c9695d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969680) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969680) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d650e47c40, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c969030 rbx 0xde rdx 0 rcx 0xffff8000014c6fa0 rax 0xfffffd806caf13e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x2bff0781168664ed r11 0x93e1a2a104153a04 r12 0x1d r13 0xfffffd806caf1300 r14 0xfffffd806f647000 r15 0xffff80000019f058 rip 0xffffffff81f32404 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c968fb0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=70546 pid=53828 tcnt=4 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=0xffff80003c946a88,0xffff80003c946d30 process=0xffff8000314f8498 user=0xffff80003c964000, vmspace=0xfffffd80732322f8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53828 3646 71320 0 2 0 syz-executor *53828 70546 71320 0 7 0x4000000 syz-executor 53828 308027 71320 0 2 0x4000000 syz-executor 53828 150770 71320 0 3 0x4000080 fsleep syz-executor 82139 413479 13995 0 2 0 syz-executor 82139 380808 13995 0 3 0x4000080 fsleep syz-executor 42940 63860 59705 0 2 0 syz-executor 42940 426599 59705 0 3 0x4000080 fsleep syz-executor 29693 18566 61827 0 2 0xc80 syz-executor 29693 311258 61827 0 3 0x4000080 ttyout syz-executor 29693 148356 61827 0 3 0x4000080 fsleep syz-executor 28753 366205 9189 0 3 0x80 nanoslp syz-executor 28753 461375 9189 0 3 0x4000080 ttyin syz-executor 28753 98305 9189 0 3 0x4000080 fsleep syz-executor 50027 38118 35210 0 3 0x80 nanoslp syz-executor 50027 195616 35210 0 3 0x4000080 fifor syz-executor 50027 176281 35210 0 3 0x4000080 fsleep syz-executor 22723 257977 0 0 3 0x14200 acct acct 80004 205364 95353 0 3 0x3000 suspend syz-executor 80004 450813 95353 0 2 0x4081000 syz-executor 35210 479391 54622 0 3 0x82 nanoslp syz-executor 34465 435059 54622 0 3 0x82 wait syz-executor 71320 228741 54622 0 3 0x82 nanoslp syz-executor 61827 286512 54622 0 3 0x82 nanoslp syz-executor 13995 18301 54622 0 3 0x82 nanoslp syz-executor 59705 440516 54622 0 3 0x82 nanoslp syz-executor 95353 251765 54622 0 3 0x82 wait syz-executor 9189 311625 54622 0 3 0x82 nanoslp syz-executor 54622 20415 65705 0 3 0x82 kqread syz-executor 65705 394948 98746 0 3 0x10008a sigsusp ksh 98746 264190 57872 0 3 0x98 kqread sshd-session 57872 372221 11504 0 3 0x92 kqread sshd-session 39255 390256 1 0 3 0x100083 ttyin getty 11504 218192 1 0 3 0x88 kqread sshd 40857 516839 97770 73 3 0x1100090 kqread syslogd 97770 251987 1 0 3 0x100082 sbwait syslogd 96754 147723 1 0 3 0x100080 kqread resolvd 81568 450328 57362 77 3 0x100092 kqread dhcpleased 82039 58787 57362 77 3 0x100092 kqread dhcpleased 57362 467065 1 0 3 0x80 kqread dhcpleased 65123 70579 0 0 3 0x14200 bored smr 52413 204835 0 0 2 0x14200 zerothread 81622 492968 0 0 3 0x14200 aiodoned aiodoned 88479 350 0 0 3 0x14200 syncer update 64731 365499 0 0 3 0x14200 cleaner cleaner 290 218498 0 0 3 0x14200 reaper reaper 22626 484872 0 0 3 0x14200 pgdaemon pagedaemon 42356 160371 0 0 3 0x14200 bored viomb 74726 266505 0 0 3 0x40014200 acpi0 acpi0 44428 143222 0 0 3 0x14200 bored softnet0 72006 325481 0 0 3 0x14200 bored systqmp 8796 190653 0 0 3 0x14200 bored systq 25246 178545 0 0 3 0x40014200 tmoslp softclock 92514 432148 0 0 3 0x40014200 idle0 1 504100 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 10209 11067K 11535K 166960K 12056 0 pcb 18 16K 17K 166960K 154 0 rtable 190 7K 7K 166960K 404 0 pf 26 12K 17K 166960K 57 0 ifaddr 34 6K 8K 166960K 56 0 ifgroup 42 1K 2K 166960K 71 0 sysctl 1 1K 9K 166960K 7 0 counters 31 17K 18K 166960K 44 0 ioctlops 0 0K 4K 166960K 68 0 iov 0 0K 24K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1373 86K 86K 166960K 1634 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 9 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 370 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 91K 166960K 484 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 40 0 in_multi 77 5K 7K 166960K 137 0 ether_multi 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 379 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 260 159K 177K 166960K 5058 0 UVM aobj 5 6K 6K 166960K 5 0 pinsyscall 39 78K 91K 166960K 1438 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 61 0 NDP 9 0K 1K 166960K 34 0 temp 40 8663K 8786K 166960K 6196 0 kqueue 17 23K 27K 166960K 64 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 55 0 51 1 0 1 1 0 8 0 rtentry 136 118 0 40 4 0 4 4 0 8 0 unpcb 144 250 0 233 4 0 4 4 0 8 3 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 149 0 144 7 0 7 7 0 8 6 arp 96 19 0 5 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 428 0 419 7 0 7 7 0 8 6 nd6 112 25 0 7 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 8 0 8 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfrule 1344 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 502 0 148 31 0 31 31 0 8 5 art_table 40 504 0 148 6 0 6 6 0 8 1 art_node 32 118 0 48 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 112 9 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1990 0 488 95 0 95 95 0 8 0 ffsino 256 1990 0 488 95 0 95 95 0 8 0 nchpl 144 2493 0 796 63 0 63 63 0 8 0 vnodes 216 2258 0 0 126 0 126 126 0 8 0 namei 1024 7832 0 7831 2 0 2 2 0 8 1 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 800 2 0 0 1 0 1 1 0 8 0 kstatmem 264 36 0 18 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 11340 0 11340 3 0 3 3 1 8 3 plimitpl 152 98 0 79 1 0 1 1 0 8 0 sigapl 424 657 0 613 6 0 6 6 0 8 1 knotepl 120 11270 0 11219 9 0 9 9 0 8 7 kqueuepl 184 88 0 74 1 0 1 1 0 8 0 pipepl 304 134 0 107 3 0 3 3 0 8 0 fdescpl 448 643 0 613 5 0 5 5 0 8 1 filepl 120 3329 0 3092 10 0 10 10 0 8 2 lockfpl 104 100 0 96 1 0 1 1 0 8 0 lockfspl 48 48 0 44 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 34 0 18 1 0 1 1 0 8 0 ucredpl 104 418 0 407 1 0 1 1 0 8 0 zombiepl 144 615 0 613 1 0 1 1 0 8 0 processpl 1152 657 0 613 4 0 4 4 0 8 0 procpl 664 1001 0 945 6 0 6 6 0 8 1 sockpl 552 748 0 717 8 0 8 8 0 8 5 mcl64k 65536 23 0 23 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2744 0 2693 14 0 14 14 0 8 7 mcl2k 2048 553 0 552 2 0 2 2 0 8 1 mtagpl 96 17 0 6 1 0 1 1 0 8 0 mbufpl 256 7076 0 6934 26 6 20 26 0 8 8 bufpl 280 4446 0 118 310 0 310 310 0 8 0 anonpl 24 128450 0 121620 60 0 60 60 0 187 8 amapchunkpl 152 22416 0 21846 38 0 38 38 0 158 16 amappl16 200 2524 0 2275 20 0 20 20 0 8 6 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 2 0 2 1 0 1 1 0 8 1 amappl13 176 403 0 402 1 0 1 1 0 8 0 amappl12 168 1016 0 977 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 262 0 262 1 0 1 1 0 8 1 amappl8 136 38 0 37 1 0 1 1 0 8 0 amappl7 128 79 0 78 1 0 1 1 0 8 0 amappl6 120 260 0 249 1 0 1 1 0 8 0 amappl5 112 68 0 60 1 0 1 1 0 8 0 amappl4 104 376 0 351 1 0 1 1 0 8 0 amappl3 96 2779 0 2655 4 0 4 4 0 8 0 amappl2 88 499 0 446 2 0 2 2 0 8 0 amappl1 80 9647 0 9100 13 0 13 13 0 8 1 amappl 88 4326 0 4135 5 0 5 5 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 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 7 0 7 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 24 643 0 613 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 643 0 613 1 0 1 1 0 8 0 vmmpekpl 168 6660 0 6636 2 0 2 2 0 8 0 vmmpepl 168 47824 0 45732 96 0 96 96 0 357 1 vmsppl 368 642 0 613 4 0 4 4 0 8 1 rwobjpl 40 15931 0 14729 14 0 14 14 0 8 0 pdppl 4096 1296 0 1228 95 27 68 78 0 8 0 pvpl 32 312626 0 299222 148 0 148 148 0 265 17 pmappl 216 644 0 613 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 387 0 33 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9691e0,0,ffff80003c969150,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148f100,ffff80003c969288,ffff80003c9691e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806caf1b00,ffff8000014bbc30) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014bbc30,fffffd806caf1b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014bbc30,0,ffff80003c969438,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c946558,4,ffff80003c969530,808,ffff80003c9695d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c946558,ffff80003c969680,ffff80003c9695d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969680) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969680) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d650e47c40, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f647000) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9691e0,0,ffff80003c969150,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000148f100,ffff80003c969288,ffff80003c9691e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806caf1b00,ffff8000014bbc30) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014bbc30,fffffd806caf1b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014bbc30,0,ffff80003c969438,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c946558,4,ffff80003c969530,808,ffff80003c9695d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c946558,ffff80003c969680,ffff80003c9695d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969680) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969680) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d650e47c40, count: -10