uvm_fault(0xffffffff83895868, 0xffff8000016be0aa, 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 *474378 1305 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390d3f0,0,ffff80003390d360,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014bdd00,ffff80003390d498,ffff80003390d3f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079938600,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd8079938600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003390d648,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0fca98,3,ffff80003390d740,808,ffff80003390d7e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0fca98,ffff80003390d890,ffff80003390d7e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390d890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390d890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4a3fc489a0, 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(0xffffffff83895868, 0xffff8000016be0aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390d3f0,0,ffff80003390d360,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014bdd00,ffff80003390d498,ffff80003390d3f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079938600,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd8079938600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003390d648,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0fca98,3,ffff80003390d740,808,ffff80003390d7e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0fca98,ffff80003390d890,ffff80003390d7e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390d890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390d890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4a3fc489a0, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003390d240 rbx 0xde rdx 0 rcx 0xffff8000016bdfc0 rax 0xfffffd8079938de0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x2d95faa5cbc1bc31 r11 0xee806dcb4b280fea r12 0x23 r13 0xfffffd8079938d00 r14 0xfffffd806c2192c0 r15 0xffff800000039058 rip 0xffffffff82f08cb4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003390d1c0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=474378 pid=1305 tcnt=3 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=0xffff80002f0fc568,0xffff80002f0fd270 process=0xffff8000ffffb198 user=0xffff800033908000, vmspace=0xfffffd806c195a28 estcpu=0, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 1305 154210 46229 0 2 0 syz-executor * 1305 474378 46229 0 7 0x4000000 syz-executor 1305 88624 46229 0 3 0x4000080 fsleep syz-executor 62965 146334 11709 0 2 0 syz-executor 62965 387127 11709 0 3 0x4000080 sbwait syz-executor 62965 517822 11709 0 3 0x4000080 sbwait syz-executor 62965 70766 11709 0 2 0x4000000 syz-executor 37108 80562 16448 0 2 0xc80 syz-executor 37108 311431 16448 0 2 0x4000c80 syz-executor 37108 242034 16448 0 3 0x4000080 fsleep syz-executor 37108 390486 16448 0 3 0x4000080 fsleep syz-executor 37108 274888 16448 0 3 0x4000080 fsleep syz-executor 37108 432916 16448 0 3 0x4000080 fsleep syz-executor 83850 217689 5998 0 2 0 syz-executor 83850 197505 5998 0 3 0x4000080 pipewr syz-executor 83850 355740 5998 0 3 0x4000080 pipewr syz-executor 83850 33637 5998 0 3 0x4000080 fsleep syz-executor 38513 448096 1 0 3 0x100083 ttyin getty 44180 484902 0 0 3 0x14200 acct acct 14859 221788 0 0 3 0x14200 bored sosplice 97722 510341 0 0 3 0x14280 nfsidl nfsio 28872 191183 0 0 3 0x14280 nfsidl nfsio 74701 99009 0 0 3 0x14280 nfsidl nfsio 96187 295661 0 0 3 0x14280 nfsidl nfsio 59611 13495 0 0 3 0x14280 nfsidl nfsio 83438 37337 0 0 3 0x14280 nfsidl nfsio 62681 190678 0 0 3 0x14280 nfsidl nfsio 65845 360652 0 0 3 0x14280 nfsidl nfsio 91131 365069 0 0 3 0x14280 nfsidl nfsio 35675 260705 0 0 3 0x14280 nfsidl nfsio 45927 166270 0 0 3 0x14280 nfsidl nfsio 14097 467125 0 0 3 0x14280 nfsidl nfsio 37060 202933 0 0 3 0x14280 nfsidl nfsio 25795 33763 0 0 3 0x14280 nfsidl nfsio 55698 509523 0 0 3 0x14280 nfsidl nfsio 52876 254653 0 0 3 0x14280 nfsidl nfsio 70162 120181 0 0 3 0x14280 nfsidl nfsio 5329 323818 0 0 3 0x14280 nfsidl nfsio 69930 129467 0 0 3 0x14280 nfsidl nfsio 29518 283580 0 0 3 0x14280 nfsidl nfsio 11709 123189 44776 0 2 0xc82 syz-executor 52896 122710 44776 0 2 0x10000c82 syz-executor 19963 327029 44776 0 2 0x2 syz-executor 46229 189824 44776 0 2 0xc82 syz-executor 598 294361 44776 0 2 0x10000c82 syz-executor 16448 251467 44776 0 2 0xc82 syz-executor 42046 232062 44776 0 2 0x10000c82 syz-executor 5998 329761 44776 0 2 0xc82 syz-executor 44776 5870 88741 0 3 0x82 kqread syz-executor 88741 199621 53676 0 3 0x10008a sigsusp ksh 53676 182515 66376 0 3 0x98 kqread sshd-session 66376 238974 29604 0 3 0x92 kqread sshd-session 29604 343443 1 0 3 0x88 kqread sshd 1899 52141 48032 73 2 0x1100090 syslogd 48032 360923 1 0 3 0x100082 sbwait syslogd 72142 133962 1 0 3 0x100080 kqread resolvd 13469 172942 40136 77 3 0x100092 kqread dhcpleased 62056 477426 40136 77 3 0x100092 kqread dhcpleased 40136 73305 1 0 3 0x80 kqread dhcpleased 82702 262294 0 0 3 0x14200 bored smr 56853 325223 0 0 2 0x14200 zerothread 99486 205329 0 0 3 0x14200 aiodoned aiodoned 75281 164591 0 0 3 0x14200 syncer update 79008 296864 0 0 3 0x14200 cleaner cleaner 59987 131559 0 0 3 0x14200 reaper reaper 75069 404674 0 0 3 0x14200 pgdaemon pagedaemon 59980 454714 0 0 3 0x14200 bored viomb 92414 11175 0 0 3 0x40014200 acpi0 acpi0 82198 180502 0 0 3 0x14200 bored softnet0 86715 151709 0 0 3 0x14200 smrbar systqmp 78544 472998 0 0 3 0x14200 bored systq 52380 423880 0 0 3 0x40014200 tmoslp softclock 89299 211073 0 0 3 0x40014200 idle0 1 64748 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 11114K 12202K 166960K 12375 0 pcb 18 16K 18K 166960K 277 0 rtable 227 9K 9K 166960K 454 0 pf 34 13K 14K 166960K 65 0 ifaddr 38 6K 8K 166960K 67 0 ifgroup 55 2K 2K 166960K 94 0 sysctl 3 1K 9K 166960K 8 0 counters 33 17K 18K 166960K 52 0 ioctlops 0 0K 4K 166960K 155 0 iov 0 0K 29K 166960K 54 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1439 90K 91K 166960K 1768 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 93K 166960K 499 0 sigio 0 0K 0K 166960K 7 0 proc 60 59K 108K 166960K 518 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 1 0K 0K 166960K 53 0 in_multi 78 5K 7K 166960K 128 0 ether_multi 1 0K 0K 166960K 7 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 384 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 226 175K 184K 166960K 6191 0 UVM aobj 18 3K 3K 166960K 18 0 pinsyscall 35 70K 94K 166960K 1576 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 53 0 NDP 12 0K 2K 166960K 42 0 temp 47 8640K 8767K 166960K 22846 0 kqueue 14 22K 39K 166960K 117 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 95 0 91 2 0 2 2 0 8 1 rtentry 136 132 0 45 4 0 4 4 0 8 0 unpcb 144 410 0 392 4 0 4 4 0 8 2 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 104 0 98 1 0 1 1 0 8 0 arp 96 18 0 4 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 720 0 710 18 6 12 12 0 8 10 ip6q 72 3 0 2 2 1 1 1 0 8 0 ip6af 40 6 0 5 2 1 1 1 0 8 0 nd6 112 30 0 9 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 14 0 14 1 0 1 1 0 8 1 pppxif 1384 3 0 3 1 1 0 1 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1344 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 624 0 168 32 3 29 31 0 8 0 art_table 40 629 0 168 5 0 5 5 0 8 0 art_node 32 132 0 53 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 15 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2247 0 749 95 0 95 95 0 8 0 ffsino 256 2247 0 749 95 0 95 95 0 8 0 nchpl 144 2955 0 1266 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 vnodes 216 2471 0 0 138 0 138 138 0 8 0 namei 1024 9887 0 9886 3 2 1 2 0 8 0 kstatmem 264 50 0 26 3 1 2 3 0 8 0 scxspl 216 10440 0 10440 8 7 1 8 1 8 1 plimitpl 152 262 0 245 1 0 1 1 0 8 0 sigapl 424 809 0 745 8 0 8 8 0 8 0 knotepl 120 31465 0 31413 10 7 3 10 0 8 0 kqueuepl 184 150 0 140 2 1 1 2 0 8 0 pipepl 304 148 0 119 3 0 3 3 0 8 0 fdescpl 448 774 0 748 5 1 4 5 0 8 0 filepl 120 4678 0 4463 14 2 12 12 0 8 3 lockfpl 104 136 0 134 1 0 1 1 0 8 0 lockfspl 48 54 0 52 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 100 0 84 1 0 1 1 0 8 0 ucredpl 104 759 0 747 1 0 1 1 0 8 0 zombiepl 144 748 0 745 1 0 1 1 0 8 0 processpl 1152 809 0 745 5 0 5 5 0 8 0 procpl 664 1403 0 1326 8 0 8 8 0 8 0 sockpl 552 1247 0 1215 18 5 13 13 0 8 9 mcl64k 65536 65 0 64 2 1 1 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 7 0 7 2 1 1 1 0 8 1 mcl4k 4096 2949 0 2898 14 6 8 13 0 8 0 mcl2k2 2112 2 0 2 2 1 1 1 0 8 1 mcl2k 2048 776 0 773 5 2 3 3 0 8 1 mtagpl 96 7 0 6 1 0 1 1 0 8 0 mbufpl 256 8524 0 8385 25 1 24 24 0 8 7 bufpl 280 4283 0 122 298 0 298 298 0 8 0 anonpl 24 132263 0 127783 48 17 31 48 0 187 0 amapchunkpl 152 19291 0 18589 40 8 32 32 0 158 0 amappl16 200 2588 0 2560 15 12 3 15 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 8 0 8 1 1 0 1 0 8 0 amappl13 176 407 0 406 1 0 1 1 0 8 0 amappl12 168 1118 0 1082 3 1 2 3 0 8 0 amappl11 160 2 0 2 1 1 0 1 0 8 0 amappl10 152 78 0 68 1 0 1 1 0 8 0 amappl9 144 247 0 246 1 0 1 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 77 0 75 1 0 1 1 0 8 0 amappl6 120 285 0 274 1 0 1 1 0 8 0 amappl5 112 71 0 63 1 0 1 1 0 8 0 amappl4 104 386 0 362 1 0 1 1 0 8 0 amappl3 96 3292 0 3216 3 0 3 3 0 8 0 amappl2 88 912 0 844 2 0 2 2 0 8 0 amappl1 80 10403 0 9881 14 1 13 13 0 8 1 amappl 88 5424 0 5270 5 0 5 5 0 92 0 uvmvnodes 80 2471 0 0 51 0 51 51 0 8 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 17 0 0 1 0 1 1 0 8 0 uaddrrnd 24 774 0 748 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 774 0 748 1 0 1 1 0 8 0 vmmpekpl 168 7709 0 7666 3 0 3 3 0 8 0 vmmpepl 168 55830 0 54187 96 9 87 92 0 357 4 vmsppl 368 773 0 748 4 1 3 4 0 8 0 rwobjpl 40 19880 0 16564 35 0 35 35 0 8 0 pdppl 4096 1554 0 1496 96 30 66 80 0 8 8 pvpl 32 349946 0 339482 142 40 102 130 0 265 4 pmappl 216 773 0 748 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 392 0 51 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390d3f0,0,ffff80003390d360,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014bdd00,ffff80003390d498,ffff80003390d3f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079938600,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd8079938600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003390d648,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0fca98,3,ffff80003390d740,808,ffff80003390d7e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0fca98,ffff80003390d890,ffff80003390d7e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390d890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390d890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4a3fc489a0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c2192c0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390d3f0,0,ffff80003390d360,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014bdd00,ffff80003390d498,ffff80003390d3f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079938600,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd8079938600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003390d648,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0fca98,3,ffff80003390d740,808,ffff80003390d7e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0fca98,ffff80003390d890,ffff80003390d7e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390d890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390d890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4a3fc489a0, count: -10