uvm_fault(0xffffffff839897b8, 0xffff80000149908a, 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 *518784 47411 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9493a8,0,ffff80003c949320,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001496300,ffff80003c949450,ffff80003c9493a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806c3ba500,ffff800001423ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001423ad8,fffffd806c3ba500,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001423ad8,0,ffff80003c9495f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7e27c8,3,ffff80003c9496f0,808,ffff80003c9497a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7e27c8,ffff80003c949850,ffff80003c9497a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949850) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949850) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcd4fcfc2dc0, 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(0xffffffff839897b8, 0xffff80000149908a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9493a8,0,ffff80003c949320,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001496300,ffff80003c949450,ffff80003c9493a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806c3ba500,ffff800001423ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001423ad8,fffffd806c3ba500,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001423ad8,0,ffff80003c9495f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7e27c8,3,ffff80003c9496f0,808,ffff80003c9497a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7e27c8,ffff80003c949850,ffff80003c9497a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949850) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949850) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcd4fcfc2dc0, count: -10 ddb> show registers rdi 0xffff800039124000 rsi 0x91a rbp 0xffff80003c9491f0 rbx 0xde rdx 0xffff800039124000 rcx 0x100040600080100 rax 0xfffffd806c3ba3e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x732a78d15bc0886d r11 0x2b242b91619c6584 r12 0x18 r13 0xfffffd806c3ba300 r14 0xfffffd806c229700 r15 0xffff800001498fa0 rip 0xffffffff81b9c82e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c949170 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=518784 pid=47411 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7e22a8,0xffff80002a7f14b0 process=0xffff800037517b00 user=0xffff80003c944000, vmspace=0xfffffd806c3be718 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47411 117405 52376 0 2 0 syz-executor *47411 518784 52376 0 7 0x4000000 syz-executor 10175 396387 21176 0 2 0 syz-executor 10175 368760 21176 0 3 0x4000080 fsleep syz-executor 10175 417975 21176 0 3 0x4000080 fsleep syz-executor 16138 306681 80671 0 2 0 syz-executor 16138 255083 80671 0 3 0x4000080 kqread syz-executor 89570 347749 44263 0 2 0 syz-executor 89570 278973 44263 0 3 0x4000080 fsleep syz-executor 89190 443287 26874 0 2 0x100000 sh 41489 201351 24485 0 2 0x2 ndp 26874 447527 27991 0 3 0x10008a sigsusp sh 24485 34676 38171 0 3 0x10008a sigsusp sh 52376 341573 8411 0 3 0x82 nanoslp syz-executor 27991 181918 8411 0 3 0x82 wait syz-executor 4638 224474 8411 0 2 0x2 syz-executor 44263 502480 8411 0 2 0xc82 syz-executor 21176 301015 8411 0 3 0x82 nanoslp syz-executor 64301 261307 8411 0 2 0x2 syz-executor 80671 124725 8411 0 2 0xc82 syz-executor 38171 162525 8411 0 3 0x82 wait syz-executor 8411 228263 20991 0 3 0x82 kqread syz-executor 20991 398432 20370 0 3 0x10008a sigsusp ksh 20370 104857 10863 0 3 0x98 kqread sshd-session 10863 202366 8294 0 3 0x92 kqread sshd-session 57593 10956 1 0 3 0x100083 ttyin getty 8294 322288 1 0 3 0x88 kqread sshd 82792 109929 77594 73 3 0x1100090 kqread syslogd 77594 363617 1 0 3 0x100082 sbwait syslogd 75591 315343 1 0 3 0x100080 kqread resolvd 41640 8389 3516 77 3 0x100092 kqread dhcpleased 32095 248755 3516 77 3 0x100092 kqread dhcpleased 3516 22194 1 0 3 0x80 kqread dhcpleased 3496 103464 0 0 3 0x14200 bored smr 72946 343461 0 0 2 0x14200 zerothread 52408 44388 0 0 3 0x14200 aiodoned aiodoned 76038 104373 0 0 2 0x14e00 update 77929 23914 0 0 3 0x14200 cleaner cleaner 31689 312490 0 0 3 0x14200 reaper reaper 25780 483266 0 0 3 0x14200 pgdaemon pagedaemon 25439 417503 0 0 3 0x14200 bored viomb 67701 499524 0 0 3 0x40014200 acpi0 acpi0 59296 347754 0 0 3 0x14200 bored softnet3 22100 514185 0 0 3 0x14200 bored softnet2 88043 191660 0 0 3 0x14200 bored softnet1 88936 133818 0 0 3 0x14200 bored softnet0 86729 180430 0 0 3 0x14200 smrbar systqmp 33906 277259 0 0 3 0x14200 bored systq 34114 53970 0 0 3 0x40014200 tmoslp softclock 37770 304977 0 0 3 0x40014200 idle0 1 121904 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 10165 11040K 11052K 166960K 11242 0 pcb 17 12K 12K 166960K 17 0 rtable 242 7K 7K 166960K 358 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 1335 84K 84K 166960K 1351 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 89K 166960K 135 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 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 343 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 205 152K 160K 166960K 2712 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 94K 166960K 1153 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 34 8662K 8726K 166960K 3593 0 kqueue 14 22K 22K 166960K 23 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 35 0 31 1 0 1 1 0 8 0 rtentry 136 110 0 1 4 0 4 4 0 8 0 unpcb 144 33 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 8 0 3 1 0 1 1 0 8 0 arp 88 18 0 0 1 0 1 1 0 8 0 inpcb 328 59 0 50 2 0 2 2 0 8 1 nd6 104 22 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 256 451 0 0 29 0 29 29 0 8 0 art_table 40 453 0 0 5 0 5 5 0 8 0 art_node 32 110 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1542 0 41 94 0 94 94 0 8 0 ffsino 248 1542 0 41 94 0 94 94 0 8 0 nchpl 144 1726 0 48 63 0 63 63 0 8 0 uvmvnodes 80 1623 0 0 34 0 34 34 0 8 0 vnodes 216 1623 0 0 91 0 91 91 0 8 0 namei 1024 5037 0 5036 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5483 0 5483 3 0 3 3 1 8 3 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 412 0 366 6 0 6 6 0 8 0 knotepl 120 2296 0 2245 2 0 2 2 0 8 0 kqueuepl 184 19 0 9 1 0 1 1 0 8 0 pipepl 296 98 0 71 3 0 3 3 0 8 0 fdescpl 440 396 0 366 5 0 5 5 0 8 0 filepl 120 1282 0 1075 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 63 0 52 1 0 1 1 0 8 0 zombiepl 144 366 0 366 1 0 1 1 0 8 1 processpl 1160 412 0 366 4 0 4 4 0 8 0 procpl 656 419 0 368 5 0 5 5 0 8 0 sockpl 528 127 0 97 3 0 3 3 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2438 0 2388 15 0 15 15 0 8 7 mcl2k 2048 178 0 176 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3893 0 3762 9 0 9 9 0 8 0 bufpl 280 2219 0 117 151 0 151 151 0 8 0 anonpl 24 94419 0 91492 23 0 23 23 0 187 3 amapchunkpl 152 7700 0 7301 17 0 17 17 0 158 0 amappl16 200 1822 0 1811 5 0 5 5 0 8 4 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 99 0 89 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 0 1 1 0 8 1 amappl12 168 1017 0 987 3 0 3 3 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 0 1 1 0 8 1 amappl9 144 248 0 247 1 0 1 1 0 8 0 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 98 0 88 1 0 1 1 0 8 0 amappl6 120 168 0 163 1 0 1 1 0 8 0 amappl5 112 115 0 108 1 0 1 1 0 8 0 amappl4 104 288 0 273 1 0 1 1 0 8 0 amappl3 96 1158 0 1070 3 0 3 3 0 8 0 amappl2 88 600 0 543 2 0 2 2 0 8 0 amappl1 80 7745 0 7189 13 0 13 13 0 8 0 amappl 88 2093 0 1954 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 24 396 0 366 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 396 0 366 1 0 1 1 0 8 0 vmmpekpl 168 4802 0 4771 2 0 2 2 0 8 0 vmmpepl 168 31898 0 30178 81 0 81 81 0 357 0 vmsppl 360 395 0 366 4 0 4 4 0 8 0 rwobjpl 32 13366 0 10921 21 0 21 21 0 8 0 pdppl 4096 799 0 732 93 14 79 79 0 8 12 pvpl 32 202083 0 194430 68 0 68 68 0 265 0 pmappl 216 395 0 366 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 254 0 14 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9493a8,0,ffff80003c949320,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001496300,ffff80003c949450,ffff80003c9493a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806c3ba500,ffff800001423ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001423ad8,fffffd806c3ba500,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001423ad8,0,ffff80003c9495f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7e27c8,3,ffff80003c9496f0,808,ffff80003c9497a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7e27c8,ffff80003c949850,ffff80003c9497a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949850) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949850) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcd4fcfc2dc0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c229700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9493a8,0,ffff80003c949320,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001496300,ffff80003c949450,ffff80003c9493a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806c3ba500,ffff800001423ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001423ad8,fffffd806c3ba500,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001423ad8,0,ffff80003c9495f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7e27c8,3,ffff80003c9496f0,808,ffff80003c9497a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7e27c8,ffff80003c949850,ffff80003c9497a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949850) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949850) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcd4fcfc2dc0, count: -10