login: uvm_fault(0xffffffff83937708, 0xffff80000149d02a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *268669 87903 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800037155300,0,ffff800037155270,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014ed900,ffff8000371553a8,ffff800037155300,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806ed25000,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014828b0,fffffd806ed25000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014828b0,0,ffff800037155558,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003b96c558,5,ffff800037155650,808,ffff8000371556f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003b96c558,ffff8000371557a0,ffff8000371556f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000371557a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000371557a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x56da1c93ad0, 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(0xffffffff83937708, 0xffff80000149d02a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800037155300,0,ffff800037155270,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014ed900,ffff8000371553a8,ffff800037155300,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806ed25000,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014828b0,fffffd806ed25000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014828b0,0,ffff800037155558,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003b96c558,5,ffff800037155650,808,ffff8000371556f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003b96c558,ffff8000371557a0,ffff8000371556f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000371557a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000371557a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x56da1c93ad0, count: -10 ddb> show registers rdi 0xffff80002a928000 rsi 0x937 rbp 0xffff800037155150 rbx 0xde rdx 0xffff80002a928000 rcx 0xffff80000149cf40 rax 0xfffffd806ed25be0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x943cc6db744bada0 r11 0xe3bfbe53930e134 r12 0x29 r13 0xfffffd806ed25b00 r14 0xfffffd806b1dd788 r15 0xffff800000039058 rip 0xffffffff82aadf47 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000371550d0 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=268669 pid=87903 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003b96c7f0,0xffffffff83869d50 process=0xffff80003b968dd0 user=0xffff800037150000, vmspace=0xfffffd807740a5d8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 87903 220313 22479 0 2 0 syz-executor *87903 268669 22479 0 7 0x4000000 syz-executor 6748 19248 92418 0 3 0x80 nanoslp syz-executor 6748 233562 92418 0 3 0x4000080 pipewr syz-executor 6748 514174 92418 0 3 0x4000080 fsleep syz-executor 3101 141446 90296 0 3 0 vmmaplk syz-executor 3101 396484 90296 0 3 0x4000080 fifor syz-executor 3101 363041 90296 0 2 0x4000000 syz-executor 80494 185765 61147 60929 3 0x90 nanoslp syz-executor 80494 239509 61147 60929 3 0x4000090 sbwait syz-executor 80494 336099 61147 60929 3 0x4000090 fsleep syz-executor 67507 155982 1 0 3 0x100083 ttyopn getty 98780 49499 0 0 3 0x14200 bored sosplice 92418 404191 77157 0 3 0x82 nanoslp syz-executor 20652 6748 77157 0 2 0x2 syz-executor 61147 27774 77157 0 3 0x82 nanoslp syz-executor 6303 296918 77157 0 2 0x2 syz-executor 32678 263166 77157 0 3 0x82 nanoslp syz-executor 19945 459787 77157 0 2 0x2 syz-executor 90296 216659 77157 0 3 0x82 nanoslp syz-executor 22479 56530 77157 0 2 0xc82 syz-executor 77157 92555 91629 0 3 0x82 kqread syz-executor 91629 78156 6881 0 3 0x10008a sigsusp ksh 6881 413485 11216 0 3 0x98 kqread sshd-session 11216 293216 35284 0 3 0x92 kqread sshd-session 35284 277680 1 0 3 0x88 kqread sshd 22608 99855 94168 73 3 0x1100090 kqread syslogd 94168 429324 1 0 3 0x100082 sbwait syslogd 11514 194305 1 0 3 0x100080 kqread resolvd 72031 122951 23358 77 3 0x100092 kqread dhcpleased 7346 241500 23358 77 3 0x100092 kqread dhcpleased 23358 72367 1 0 3 0x80 kqread dhcpleased 81528 145223 0 0 3 0x14200 bored smr 79379 300011 0 0 2 0x14200 zerothread 34494 230514 0 0 3 0x14200 aiodoned aiodoned 33566 414954 0 0 3 0x14200 syncer update 58564 408067 0 0 3 0x14200 cleaner cleaner 72314 523347 0 0 3 0x14200 reaper reaper 57981 341539 0 0 3 0x14200 pgdaemon pagedaemon 3972 367723 0 0 3 0x14200 bored viomb 57589 516155 0 0 3 0x40014200 acpi0 acpi0 32830 162326 0 0 3 0x14200 bored softnet7 78616 28227 0 0 3 0x14200 bored softnet6 88761 391855 0 0 3 0x14200 bored softnet5 57647 377338 0 0 3 0x14200 bored softnet4 78437 293202 0 0 3 0x14200 bored softnet3 91292 253123 0 0 3 0x14200 bored softnet2 18406 201739 0 0 3 0x14200 bored softnet1 85015 128464 0 0 3 0x14200 bored softnet0 1075 104800 0 0 3 0x14200 bored systqmp 84229 185145 0 0 3 0x14200 bored systq 25292 17753 0 0 3 0x40014200 tmoslp softclock 85792 368590 0 0 3 0x40014200 idle0 1 356544 0 0 3 0x82 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 10187 11146K 11415K 166960K 11538 0 pcb 18 12K 12K 166960K 80 0 rtable 200 7K 7K 166960K 304 0 pf 29 12K 16K 166960K 49 0 ifaddr 37 6K 7K 166960K 53 0 ifgroup 46 2K 2K 166960K 65 0 sysctl 3 1K 9K 166960K 9 0 counters 31 17K 18K 166960K 40 0 ioctlops 0 0K 4K 166960K 60 0 iov 0 0K 12K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1566 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 14 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 89K 166960K 370 0 sigio 0 0K 0K 166960K 2 0 proc 63 67K 91K 166960K 499 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 30 0 in_multi 84 6K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 372 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 208 154K 165K 166960K 4857 0 UVM aobj 13 2K 2K 166960K 13 0 pinsyscall 36 72K 94K 166960K 1421 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 10 0K 1K 166960K 32 0 temp 76 8644K 8727K 166960K 11375 0 kqueue 14 22K 29K 166960K 56 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 52 0 48 1 0 1 1 0 8 0 rtentry 136 101 0 17 4 0 4 4 0 8 0 unpcb 144 409 0 390 1 0 1 1 0 8 0 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 215 0 205 4 0 4 4 0 8 3 arp 88 11 0 1 1 0 1 1 0 8 0 inpcb 328 449 0 431 5 0 5 5 0 8 1 ip6q 72 2 0 2 1 0 1 1 0 8 1 ip6af 40 4 0 4 1 0 1 1 0 8 1 nd6 104 17 0 4 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 6 0 6 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 3 0 3 1 0 1 1 0 8 1 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1344 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 459 0 78 29 0 29 29 0 8 1 art_table 40 462 0 78 5 0 5 5 0 8 0 art_node 32 101 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semapl 112 10 0 4 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2018 0 517 95 0 95 95 0 8 0 ffsino 256 2018 0 517 95 0 95 95 0 8 0 nchpl 144 2519 0 838 63 0 63 63 0 8 0 uvmvnodes 80 2199 0 0 45 0 45 45 0 8 0 vnodes 216 2199 0 0 123 0 123 123 0 8 0 namei 1024 8168 0 8167 2 0 2 2 0 8 1 kstatmem 264 32 0 12 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 8998 0 8998 8 0 8 8 1 8 8 plimitpl 152 185 0 169 1 0 1 1 0 8 0 sigapl 424 660 0 612 7 0 7 7 0 8 1 knotepl 120 13022 0 12973 16 0 16 16 0 8 13 kqueuepl 184 143 0 133 3 0 3 3 0 8 2 pipepl 304 181 0 152 8 0 8 8 0 8 5 fdescpl 448 637 0 611 5 0 5 5 0 8 1 filepl 120 3510 0 3282 12 0 12 12 0 8 4 lockfpl 104 129 0 125 1 0 1 1 0 8 0 lockfspl 48 54 0 50 1 0 1 1 0 8 0 sessionpl 144 27 0 19 1 0 1 1 0 8 0 pgrppl 48 37 0 21 1 0 1 1 0 8 0 ucredpl 104 537 0 522 1 0 1 1 0 8 0 zombiepl 144 613 0 612 1 0 1 1 0 8 0 processpl 1168 660 0 612 5 0 5 5 0 8 1 procpl 664 1043 0 988 6 0 6 6 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 552 920 0 879 6 0 6 6 0 8 2 mcl64k 65536 163 0 163 2 0 2 2 0 8 2 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2803 0 2751 15 0 15 15 0 8 8 mcl2k 2048 553 0 547 2 0 2 2 0 8 1 mtagpl 96 43 0 5 1 0 1 1 0 8 0 mbufpl 256 7108 0 6906 15 0 15 15 0 8 1 bufpl 280 3562 0 119 246 0 246 246 0 8 0 anonpl 24 124240 0 117779 69 0 69 69 0 187 29 amapchunkpl 152 15487 0 15076 26 0 26 26 0 158 6 amappl16 200 2173 0 1934 24 0 24 24 0 8 11 amappl15 192 10 0 10 1 0 1 1 0 8 1 amappl14 184 113 0 103 1 0 1 1 0 8 0 amappl13 176 12 0 11 1 0 1 1 0 8 0 amappl12 168 1249 0 1222 2 0 2 2 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 0 1 1 0 8 1 amappl9 144 258 0 257 1 0 1 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 130 0 120 1 0 1 1 0 8 0 amappl6 120 171 0 167 1 0 1 1 0 8 0 amappl5 112 111 0 105 1 0 1 1 0 8 0 amappl4 104 276 0 260 1 0 1 1 0 8 0 amappl3 96 2746 0 2653 3 0 3 3 0 8 0 amappl2 88 651 0 595 2 0 2 2 0 8 0 amappl1 80 10099 0 9555 14 0 14 14 0 8 0 amappl 88 4154 0 4012 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 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 637 0 610 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 637 0 610 1 0 1 1 0 8 0 vmmpekpl 168 7235 0 7201 2 0 2 2 0 8 0 vmmpepl 168 48040 0 46105 100 0 100 100 0 357 9 vmsppl 368 636 0 610 4 0 4 4 0 8 1 rwobjpl 40 17868 0 14624 34 0 34 34 0 8 1 pdppl 4096 1280 0 1220 100 32 68 78 0 8 8 pvpl 32 309487 0 297692 154 0 154 154 0 265 44 pmappl 216 636 0 610 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 385 0 32 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800037155300,0,ffff800037155270,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014ed900,ffff8000371553a8,ffff800037155300,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806ed25000,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014828b0,fffffd806ed25000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014828b0,0,ffff800037155558,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003b96c558,5,ffff800037155650,808,ffff8000371556f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003b96c558,ffff8000371557a0,ffff8000371556f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000371557a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000371557a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x56da1c93ad0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b1dd788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800037155300,0,ffff800037155270,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014ed900,ffff8000371553a8,ffff800037155300,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806ed25000,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014828b0,fffffd806ed25000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014828b0,0,ffff800037155558,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003b96c558,5,ffff800037155650,808,ffff8000371556f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003b96c558,ffff8000371557a0,ffff8000371556f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000371557a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000371557a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x56da1c93ad0, count: -10