uvm_fault(0xffffffff839265f8, 0xffff8000016ef08a, 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 *433386 51594 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c96d570,0,ffff80003c96d4e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000016ac700,ffff80003c96d618,ffff80003c96d570,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8069d2bd00,ffff800001593378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001593378,fffffd8069d2bd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001593378,0,ffff80003c96d7c8,0,0,800) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c966d28,3,ffff80003c96d8c0,800,ffff80003c96d960) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c966d28,ffff80003c96da10,ffff80003c96d960) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c96da10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96da10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x91688164640, 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(0xffffffff839265f8, 0xffff8000016ef08a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c96d570,0,ffff80003c96d4e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000016ac700,ffff80003c96d618,ffff80003c96d570,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8069d2bd00,ffff800001593378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001593378,fffffd8069d2bd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001593378,0,ffff80003c96d7c8,0,0,800) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c966d28,3,ffff80003c96d8c0,800,ffff80003c96d960) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c966d28,ffff80003c96da10,ffff80003c96d960) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c96da10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96da10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x91688164640, count: -10 ddb> show registers rdi 0xffff80002f4f2000 rsi 0x44b rbp 0xffff80003c96d3c0 rbx 0xde rdx 0xffff80002f4f2000 rcx 0xffff8000016eefa0 rax 0xfffffd80688762e0 r8 0x1000 __ALIGN_SIZE r9 0xfffffd807e640a18 r10 0x1f81ed3f9b843c00 r11 0x15e51b8d20d7eda8 r12 0x4d r13 0xfffffd8068876200 r14 0xfffffd807e640a18 r15 0xffff8000002a2058 rip 0xffffffff81675394 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c96d340 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=433386 pid=51594 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c9662c8,0xffffffff838e89b0 process=0xffff8000ffffba98 user=0xffff80003c968000, vmspace=0xfffffd806c998e70 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 51594 446015 52413 0 2 0 syz-executor *51594 433386 52413 0 7 0x4000000 syz-executor 23936 358710 36251 0 2 0 syz-executor 23936 213931 36251 0 3 0x4000080 fsleep syz-executor 9749 44019 70181 0 2 0 syz-executor 9749 422078 70181 0 3 0x4000080 fsleep syz-executor 34151 180281 55638 0 2 0 syz-executor 34151 366011 55638 0 3 0x4000080 kqread syz-executor 34151 474355 55638 0 3 0x4000080 sbwait syz-executor 11289 470363 29042 0 2 0 syz-executor 11289 66986 29042 0 3 0x4000080 kqread syz-executor 11289 224208 29042 0 3 0x4000080 fsleep syz-executor 14909 515113 22064 0 2 0 syz-executor 14909 101123 22064 0 3 0x4000080 fsleep syz-executor 14909 83064 22064 0 3 0x4000080 fsleep syz-executor 13822 502915 39831 0 2 0 syz-executor 13822 315160 39831 0 3 0x4000080 ttyout syz-executor 33388 83813 1 0 3 0x100083 ttyopn getty 52413 454762 14118 0 3 0x82 nanoslp syz-executor 70862 38818 0 0 3 0x14280 nfsidl nfsio 82702 414132 0 0 3 0x14280 nfsidl nfsio 24459 88291 0 0 3 0x14280 nfsidl nfsio 14546 396094 0 0 3 0x14280 nfsidl nfsio 39831 407242 14118 0 3 0x82 nanoslp syz-executor 59829 457676 14118 0 2 0x2 syz-executor 70181 333854 14118 0 3 0x82 nanoslp syz-executor 36251 349140 14118 0 3 0x82 nanoslp syz-executor 55638 138629 14118 0 3 0x82 nanoslp syz-executor 29042 455535 14118 0 3 0x82 nanoslp syz-executor 22064 290380 14118 0 3 0x82 nanoslp syz-executor 14118 97836 66995 0 3 0x82 kqread syz-executor 66995 477174 70189 0 3 0x10008a sigsusp ksh 70189 95184 64508 0 3 0x98 kqread sshd-session 64508 263272 79585 0 3 0x92 kqread sshd-session 79585 63799 1 0 3 0x88 kqread sshd 83376 414232 7621 73 3 0x1100090 kqread syslogd 7621 333027 1 0 3 0x100082 sbwait syslogd 37791 229255 1 0 3 0x100080 kqread resolvd 29116 304975 18698 77 3 0x100092 kqread dhcpleased 8734 250009 18698 77 3 0x100092 kqread dhcpleased 18698 445009 1 0 3 0x80 kqread dhcpleased 83368 97341 0 0 3 0x14200 bored smr 74912 469732 0 0 2 0x14200 zerothread 68405 418462 0 0 3 0x14200 aiodoned aiodoned 40564 473029 0 0 3 0x14200 syncer update 80357 70211 0 0 3 0x14200 cleaner cleaner 48121 103768 0 0 3 0x14200 reaper reaper 86751 459301 0 0 3 0x14200 pgdaemon pagedaemon 11902 522413 0 0 3 0x14200 bored viomb 88459 430718 0 0 3 0x40014200 acpi0 acpi0 42775 109503 0 0 3 0x14200 bored softnet0 18395 47115 0 0 3 0x14200 bored systqmp 69364 75876 0 0 3 0x14200 bored systq 99157 41355 0 0 3 0x40014200 tmoslp softclock 89519 336298 0 0 3 0x40014200 idle0 1 359475 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11074 12187K 13652K 166960K 15620 0 pcb 19 16K 18K 166960K 617 0 rtable 208 9K 10K 166960K 966 0 pf 37 14K 15K 166960K 156 0 ifaddr 39 7K 8K 166960K 125 0 ifgroup 64 2K 3K 166960K 215 0 sysctl 4 1K 9K 166960K 17 0 counters 35 18K 18K 166960K 111 0 ioctlops 0 0K 4K 166960K 240 0 iov 1 0K 16K 166960K 74 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1527 96K 96K 166960K 2882 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 52 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 1426 0 sigio 0 0K 0K 166960K 26 0 proc 60 59K 100K 166960K 668 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 365 0 in_multi 77 5K 7K 166960K 175 0 ether_multi 1 0K 0K 166960K 16 0 mrt 1 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 566 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 228 152K 169K 166960K 14116 0 UVM aobj 36 10K 10K 166960K 40 0 pinsyscall 38 76K 93K 166960K 2504 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 71 0 NDP 13 0K 2K 166960K 84 0 temp 78 8672K 8748K 166960K 51348 0 kqueue 15 24K 29K 166960K 266 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 120 167 0 162 2 1 1 2 0 8 0 rtentry 136 264 0 187 4 0 4 4 0 8 0 unpcb 144 1381 0 1362 6 5 1 6 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 543 0 537 8 6 2 7 0 8 1 arp 96 58 0 45 1 0 1 1 0 8 0 ipq 40 4 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 0 1 0 1 1 0 8 0 inpcb 328 1655 0 1644 13 11 2 12 0 8 0 ip6q 72 4 0 3 1 0 1 1 0 8 0 ip6af 40 7 0 6 1 0 1 1 0 8 0 nd6 112 32 0 11 1 0 1 1 0 8 0 pkpcb 40 45 0 45 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 1 0 1 0 8 0 ppxss 1072 58 0 58 2 1 1 1 0 8 1 pppxif 1384 8 0 8 2 1 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pfstkey 128 2 0 2 1 1 0 1 0 8 0 pfstate 384 1 0 1 1 1 0 1 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 3 0 1 2 0 2 2 0 8 0 art_heap4 256 952 0 628 38 13 25 37 0 8 1 art_table 40 955 0 629 6 0 6 6 0 8 0 art_node 32 262 0 194 2 0 2 2 0 8 0 sysvmsgpl 40 15 0 7 1 0 1 1 0 8 0 semapl 112 46 0 36 1 0 1 1 0 8 0 shmpl 112 33 0 4 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 4043 0 2543 95 0 95 95 0 8 0 ffsino 256 4043 0 2543 95 0 95 95 0 8 0 nchpl 144 6085 0 4389 64 0 64 64 0 8 0 rtmask 32 9 0 9 2 1 1 1 0 8 1 vnodes 216 3665 0 0 204 0 204 204 0 8 0 namei 1024 22759 0 22759 4 2 2 2 0 8 2 vcpupl 3904 4 0 0 1 0 1 1 0 8 0 vmpool 808 4 0 0 1 0 1 1 0 8 0 kstatmem 264 130 0 104 4 1 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 5 0 5 1 1 0 1 0 8 0 scxspl 216 27995 0 27995 8 7 1 8 1 8 1 plimitpl 152 450 0 433 1 0 1 1 0 8 0 sigapl 424 1701 0 1655 8 1 7 8 0 8 0 knotepl 120 60278 0 60228 18 9 9 12 0 8 6 kqueuepl 184 793 0 781 9 5 4 6 0 8 3 pipepl 304 216 0 189 3 0 3 3 0 8 0 fdescpl 448 1668 0 1639 5 1 4 5 0 8 0 filepl 120 12439 0 12213 17 8 9 17 0 8 1 lockfpl 104 783 0 781 3 1 2 2 0 8 1 lockfspl 48 230 0 228 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 100 0 84 1 0 1 1 0 8 0 ucredpl 104 1740 0 1729 1 0 1 1 0 8 0 zombiepl 144 1736 0 1736 1 0 1 1 0 8 1 processpl 1152 1701 0 1655 5 0 5 5 0 8 0 procpl 664 3619 0 3562 7 0 7 7 0 8 1 sosppl 176 11 0 11 1 1 0 1 0 8 0 sockpl 552 3287 0 3252 13 10 3 12 0 8 0 mcl64k 65536 238 0 237 2 1 1 2 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 27 0 27 2 1 1 1 0 8 1 mcl4k 4096 4247 0 4193 14 6 8 14 0 8 0 mcl2k2 2112 2 0 2 1 1 0 1 0 8 0 mcl2k 2048 2705 0 2699 7 5 2 6 0 8 1 mtagpl 96 97 0 33 2 0 2 2 0 8 0 mbufpl 256 24169 0 23933 243 222 21 191 0 8 0 bufpl 280 9942 0 3721 445 0 445 445 0 8 0 anonpl 24 264344 0 261168 63 18 45 58 0 187 6 amapchunkpl 152 67231 0 66767 40 14 26 37 0 158 5 amappl16 200 4782 0 4746 35 20 15 22 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 422 0 421 1 0 1 1 0 8 0 amappl12 168 2059 0 2021 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 60 0 50 1 0 1 1 0 8 0 amappl9 144 240 0 240 1 1 0 1 0 8 0 amappl8 136 21 0 20 1 0 1 1 0 8 0 amappl7 128 96 0 93 1 0 1 1 0 8 0 amappl6 120 278 0 266 1 0 1 1 0 8 0 amappl5 112 84 0 76 1 0 1 1 0 8 0 amappl4 104 410 0 386 1 0 1 1 0 8 0 amappl3 96 9544 0 9441 4 0 4 4 0 8 0 amappl2 88 537 0 482 2 0 2 2 0 8 0 amappl1 80 14573 0 14047 13 1 12 13 0 8 0 amappl 88 13148 0 12990 5 0 5 5 0 92 0 uvmvnodes 80 145 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 1 1 0 1 0 8 0 dma128 128 254 0 254 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 39 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1668 0 1639 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1668 0 1639 1 0 1 1 0 8 0 vmmpekpl 168 14413 0 14369 3 0 3 3 0 8 0 vmmpepl 168 109285 0 107501 106 15 91 97 0 357 7 vmsppl 368 1667 0 1639 4 1 3 4 0 8 0 rwobjpl 40 29084 0 28073 14 0 14 14 0 8 0 pdppl 4096 3351 0 3282 117 46 71 81 0 8 2 pvpl 32 775283 0 766398 146 32 114 130 0 265 16 pmappl 216 1671 0 1639 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 647 0 309 16 3 13 16 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c96d570,0,ffff80003c96d4e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000016ac700,ffff80003c96d618,ffff80003c96d570,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8069d2bd00,ffff800001593378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001593378,fffffd8069d2bd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001593378,0,ffff80003c96d7c8,0,0,800) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c966d28,3,ffff80003c96d8c0,800,ffff80003c96d960) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c966d28,ffff80003c96da10,ffff80003c96d960) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c96da10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96da10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x91688164640, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807e640a18) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c96d570,0,ffff80003c96d4e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000016ac700,ffff80003c96d618,ffff80003c96d570,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8069d2bd00,ffff800001593378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001593378,fffffd8069d2bd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001593378,0,ffff80003c96d7c8,0,0,800) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c966d28,3,ffff80003c96d8c0,800,ffff80003c96d960) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c966d28,ffff80003c96da10,ffff80003c96d960) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c96da10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96da10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x91688164640, count: -10