uvm_fault(0xffffffff838bf2e8, 0xffff8000014a10ca, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *410853 76281 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c955388,0,ffff80003c955300,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149e300,ffff80003c955430,ffff80003c955388,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806ceb3400,ffff80000148ee80) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000148ee80,fffffd806ceb3400,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000148ee80,0,ffff80003c9555d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,4,ffff80003c9556d0,808,ffff80003c955780) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c955830,ffff80003c955780) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c955830) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c955830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc92ad1f8e10, 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(0xffffffff838bf2e8, 0xffff8000014a10ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c955388,0,ffff80003c955300,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149e300,ffff80003c955430,ffff80003c955388,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806ceb3400,ffff80000148ee80) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000148ee80,fffffd806ceb3400,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000148ee80,0,ffff80003c9555d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,4,ffff80003c9556d0,808,ffff80003c955780) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c955830,ffff80003c955780) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c955830) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c955830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc92ad1f8e10, count: -10 ddb> show registers rdi 0xffff80003390e000 rsi 0x930 rbp 0xffff80003c9551d0 rbx 0xde rdx 0xffff80003390e000 rcx 0x100040600080100 rax 0xfffffd805d2e7ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xf4934633e90d8280 r11 0x209ffb98a25cdb09 r12 0x1b r13 0xfffffd805d2e7c00 r14 0xfffffd806ba44810 r15 0xffff8000014a0fe0 rip 0xffffffff8256e66e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c955150 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=410853 pid=76281 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=0xffff80002a7f07d0,0xffff80002a7f0f90 process=0xffff800035d17678 user=0xffff80003c950000, vmspace=0xfffffd806bbb35b0 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53758 498297 25348 0 2 0 syz-executor 53758 407117 25348 0 2 0x4000000 syz-executor 93308 234088 98527 0 2 0 syz-executor 93308 298843 98527 0 3 0x4000080 fsleep syz-executor 76281 110647 88863 0 2 0 syz-executor *76281 410853 88863 0 7 0x4000000 syz-executor 6773 85989 64347 0 2 0 syz-executor 6773 42648 64347 0 3 0x4000080 fsleep syz-executor 53008 321628 46710 -1 2 0x10 syz-executor 53008 81320 46710 -1 3 0x4000090 kqpoll syz-executor 53008 80586 46710 -1 2 0x4000010 syz-executor 2048 169766 92207 0 2 0x1000000 syz-executor 2048 238654 92207 0 3 0x5000080 fsleep syz-executor 2048 303803 92207 0 3 0x5000080 fsleep syz-executor 3766 372679 46526 0 2 0 syz-executor 3766 291638 46526 0 3 0x4000080 kqsel syz-executor 3766 93906 46526 0 2 0x4000000 syz-executor 66318 241651 34050 0 3 0x80 nanoslp syz-executor 66318 292503 34050 0 2 0x4000000 syz-executor 66318 334871 34050 0 3 0x4000080 fsleep syz-executor 46710 51855 34016 0 3 0x82 nanoslp syz-executor 92207 455659 34016 0 3 0x82 nanoslp syz-executor 64347 205031 34016 0 3 0x82 nanoslp syz-executor 88863 419913 34016 0 3 0x82 nanoslp syz-executor 25348 217008 34016 0 3 0x82 nanoslp syz-executor 98527 75114 34016 0 3 0x82 nanoslp syz-executor 34050 215263 34016 0 3 0x82 nanoslp syz-executor 46526 242 34016 0 3 0x82 nanoslp syz-executor 34016 398358 28405 0 3 0x82 kqread syz-executor 28405 180490 30698 0 3 0x10008a sigsusp ksh 30698 182781 54025 0 3 0x98 kqread sshd-session 54025 447234 84686 0 3 0x92 kqread sshd-session 58682 201326 1 0 3 0x100083 ttyin getty 84686 58979 1 0 3 0x88 kqread sshd 70534 316877 3743 73 3 0x1100090 kqread syslogd 3743 313339 1 0 3 0x100082 sbwait syslogd 74980 412578 1 0 3 0x100080 kqread resolvd 96744 237410 38761 77 3 0x100092 kqread dhcpleased 99731 201731 38761 77 3 0x100092 kqread dhcpleased 38761 367323 1 0 3 0x80 kqread dhcpleased 34031 256657 0 0 3 0x14200 bored smr 24057 382054 0 0 2 0x14200 zerothread 88457 401097 0 0 3 0x14200 aiodoned aiodoned 83854 498760 0 0 3 0x14200 syncer update 58260 341193 0 0 3 0x14200 cleaner cleaner 80902 258576 0 0 3 0x14200 reaper reaper 89341 328444 0 0 3 0x14200 pgdaemon pagedaemon 6273 229798 0 0 3 0x14200 bored viomb 32656 89370 0 0 3 0x40014200 acpi0 acpi0 69462 227072 0 0 3 0x14200 bored softnet3 89987 477404 0 0 3 0x14200 bored softnet2 50007 134932 0 0 3 0x14200 bored softnet1 34586 296490 0 0 3 0x14200 bored softnet0 13804 292315 0 0 3 0x14200 bored systqmp 29190 54211 0 0 3 0x14200 bored systq 41689 68596 0 0 3 0x40014200 tmoslp softclock 38986 202819 0 0 3 0x40014200 idle0 1 299721 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 10172 11049K 11247K 166960K 11273 0 pcb 18 12K 12K 166960K 33 0 rtable 218 8K 8K 166960K 281 0 pf 30 12K 19K 166960K 38 0 ifaddr 42 7K 7K 166960K 45 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 18K 166960K 35 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 1K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1340 84K 84K 166960K 1398 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 97K 166960K 160 0 sigio 1 0K 0K 166960K 2 0 proc 59 67K 124K 166960K 478 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 6 0 in_multi 99 7K 7K 166960K 100 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 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 348 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 226 151K 160K 166960K 2947 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 96K 166960K 1192 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 11 0K 2K 166960K 28 0 temp 35 8662K 8726K 166960K 3786 0 kqueue 14 22K 24K 166960K 26 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 40 0 36 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 55 0 35 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 14 0 8 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 83 0 72 2 0 2 2 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 ppxss 1072 3 0 3 1 0 1 1 0 8 1 pfanchor 1288 1 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 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1620 0 115 95 0 95 95 0 8 0 ffsino 248 1620 0 115 95 0 95 95 0 8 0 nchpl 144 1836 0 155 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 1712 0 0 35 0 35 35 0 8 0 vnodes 216 1712 0 0 96 0 96 96 0 8 0 namei 1024 5391 0 5391 2 0 2 2 0 8 2 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6371 0 6371 8 0 8 8 1 8 8 plimitpl 152 31 0 14 1 0 1 1 0 8 0 sigapl 424 440 0 394 7 0 7 7 0 8 1 knotepl 120 4085 0 4037 10 0 10 10 0 8 8 kqueuepl 184 28 0 17 1 0 1 1 0 8 0 pipepl 296 102 0 73 3 0 3 3 0 8 0 fdescpl 440 424 0 394 5 0 5 5 0 8 1 filepl 120 1508 0 1289 8 0 8 8 0 8 0 lockfpl 104 16 0 14 1 0 1 1 0 8 0 lockfspl 48 9 0 7 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 104 181 0 169 1 0 1 1 0 8 0 zombiepl 144 394 0 394 1 0 1 1 0 8 1 processpl 1160 440 0 394 4 0 4 4 0 8 0 procpl 656 482 0 424 5 0 5 5 0 8 0 sockpl 528 179 0 144 3 0 3 3 0 8 0 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2421 0 2370 14 0 14 14 0 8 7 mcl2k 2048 190 0 189 1 0 1 1 0 8 0 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 3995 0 3848 11 0 11 11 0 8 1 bufpl 280 2875 0 117 197 0 197 197 0 8 0 anonpl 24 94831 0 91705 31 0 31 31 0 187 9 amapchunkpl 152 8527 0 8047 23 0 23 23 0 158 3 amappl16 200 1664 0 1640 5 0 5 5 0 8 3 amappl15 192 56 0 55 1 0 1 1 0 8 0 amappl14 184 99 0 89 1 0 1 1 0 8 0 amappl13 176 29 0 29 1 0 1 1 0 8 1 amappl12 168 1037 0 1007 3 0 3 3 0 8 1 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 0 1 1 0 8 1 amappl9 144 250 0 250 1 0 1 1 0 8 1 amappl8 136 19 0 18 1 0 1 1 0 8 0 amappl7 128 100 0 90 1 0 1 1 0 8 0 amappl6 120 174 0 171 1 0 1 1 0 8 0 amappl5 112 134 0 128 1 0 1 1 0 8 0 amappl4 104 281 0 264 1 0 1 1 0 8 0 amappl3 96 1347 0 1239 3 0 3 3 0 8 0 amappl2 88 606 0 553 2 0 2 2 0 8 0 amappl1 80 7958 0 7405 13 0 13 13 0 8 0 amappl 88 2309 0 2146 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 128 254 0 254 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 24 424 0 394 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 424 0 394 1 0 1 1 0 8 0 vmmpekpl 168 4824 0 4789 2 0 2 2 0 8 0 vmmpepl 168 33380 0 31519 81 0 81 81 0 357 0 vmsppl 360 423 0 394 4 0 4 4 0 8 1 rwobjpl 32 13614 0 11068 21 0 21 21 0 8 0 pdppl 4096 855 0 788 97 28 69 83 0 8 2 pvpl 32 211360 0 202707 91 0 91 91 0 265 19 pmappl 216 423 0 394 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 259 0 28 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c955388,0,ffff80003c955300,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149e300,ffff80003c955430,ffff80003c955388,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806ceb3400,ffff80000148ee80) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000148ee80,fffffd806ceb3400,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000148ee80,0,ffff80003c9555d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,4,ffff80003c9556d0,808,ffff80003c955780) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c955830,ffff80003c955780) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c955830) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c955830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc92ad1f8e10, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba44810) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c955388,0,ffff80003c955300,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149e300,ffff80003c955430,ffff80003c955388,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806ceb3400,ffff80000148ee80) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000148ee80,fffffd806ceb3400,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000148ee80,0,ffff80003c9555d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,4,ffff80003c9556d0,808,ffff80003c955780) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c955830,ffff80003c955780) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c955830) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c955830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc92ad1f8e10, count: -10