login: uvm_fault(0xffffffff838eeff0, 0xffff80000148b08a, 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 *280666 45530 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9696c0,0,ffff80003c969630,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001488a00,ffff80003c969768,ffff80003c9696c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805f03a400,ffff800001482ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001482ad8,fffffd805f03a400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001482ad8,0,ffff80003c969918,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aad10,3,ffff80003c969a10,808,ffff80003c969ab0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aad10,ffff80003c969b60,ffff80003c969ab0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969b60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969b60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9348989aa10, 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(0xffffffff838eeff0, 0xffff80000148b08a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9696c0,0,ffff80003c969630,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001488a00,ffff80003c969768,ffff80003c9696c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805f03a400,ffff800001482ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001482ad8,fffffd805f03a400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001482ad8,0,ffff80003c969918,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aad10,3,ffff80003c969a10,808,ffff80003c969ab0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aad10,ffff80003c969b60,ffff80003c969ab0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969b60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969b60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9348989aa10, count: -10 ddb> show registers rdi 0xffff800038d14000 rsi 0x932 rbp 0xffff80003c969510 rbx 0xde rdx 0xffff800038d14000 rcx 0xffff80000148afa0 rax 0xfffffd805f03a2e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x134a3f0a815ec44f r11 0x9f6cfb7bc310fb43 r12 0x19 r13 0xfffffd805f03a200 r14 0xfffffd806b7c0810 r15 0xffff800000039058 rip 0xffffffff81892084 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c969490 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=280666 pid=45530 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=0xffff80002a7ab4d8,0xffffffff838d6708 process=0xffff8000ffff8d98 user=0xffff80003c964000, vmspace=0xfffffd806b817018 estcpu=14, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 45530 450710 88138 0 2 0 syz-executor *45530 280666 88138 0 7 0x4000000 syz-executor 20612 437060 59865 0 2 0 syz-executor 20612 127088 59865 0 3 0x4000080 fsleep syz-executor 72341 504635 24877 0 2 0 syz-executor 22600 278997 93144 0 2 0 syz-executor 22600 460386 93144 0 3 0x4000080 fsleep syz-executor 22600 432017 93144 0 3 0x4000080 fsleep syz-executor 99689 221060 39562 0 2 0 syz-executor 99689 471593 39562 0 3 0x4000080 fsleep syz-executor 99689 280189 39562 0 3 0x4000080 fsleep syz-executor 58783 440024 13052 0 2 0 syz-executor 58783 375860 13052 0 3 0x4000080 fsleep syz-executor 74764 335490 88773 0 2 0 syz-executor 74764 517308 88773 0 3 0x4000080 fsleep syz-executor 74764 168916 88773 0 3 0x4000080 fsleep syz-executor 5667 149014 6728 0 2 0 syz-executor 5667 398390 6728 0 3 0x4000080 fsleep syz-executor 88138 365137 60526 0 3 0x82 nanoslp syz-executor 24877 409608 60526 0 2 0xc82 syz-executor 88773 242410 60526 0 3 0x82 nanoslp syz-executor 59865 218545 60526 0 2 0xc82 syz-executor 39562 48857 60526 0 2 0xc82 syz-executor 93144 21642 60526 0 3 0x82 nanoslp syz-executor 13052 82997 60526 0 3 0x82 nanoslp syz-executor 6728 316711 60526 0 2 0xc82 syz-executor 60526 290498 83684 0 3 0x82 kqread syz-executor 83684 491310 96938 0 3 0x10008a sigsusp ksh 96938 52057 17115 0 3 0x98 kqread sshd-session 17115 15185 50450 0 3 0x92 kqread sshd-session 89331 435549 1 0 3 0x100083 ttyin getty 50450 236302 1 0 3 0x88 kqread sshd 12184 2668 36016 73 3 0x1100090 kqread syslogd 36016 383568 1 0 3 0x100082 sbwait syslogd 51570 51357 1 0 3 0x100080 kqread resolvd 48107 111246 15335 77 3 0x100092 kqread dhcpleased 89093 68335 15335 77 3 0x100092 kqread dhcpleased 15335 47285 1 0 3 0x80 kqread dhcpleased 59024 92345 0 0 3 0x14200 bored smr 92714 360215 0 0 2 0x14200 zerothread 87097 299877 0 0 3 0x14200 aiodoned aiodoned 31391 104690 0 0 3 0x14200 syncer update 65414 95356 0 0 3 0x14200 cleaner cleaner 99231 181841 0 0 3 0x14200 reaper reaper 25555 17452 0 0 3 0x14200 pgdaemon pagedaemon 65529 484234 0 0 3 0x14200 bored viomb 74958 278873 0 0 3 0x40014200 acpi0 acpi0 80657 452329 0 0 3 0x14200 bored softnet0 18926 138284 0 0 3 0x14200 smrbar systqmp 64148 271955 0 0 3 0x14200 bored systq 63698 336410 0 0 3 0x40014200 tmoslp softclock 25295 383954 0 0 3 0x40014200 idle0 1 103063 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 10167 11042K 11052K 166960K 11244 0 pcb 18 12K 12K 166960K 21 0 rtable 214 7K 7K 166960K 276 0 pf 33 13K 13K 166960K 33 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 33 0 ioctlops 0 0K 2K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 84K 166960K 1355 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 85K 166960K 143 0 proc 57 58K 91K 166960K 473 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 0 0K 0K 166960K 2 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 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 31 148K 148K 166960K 31 0 exec 0 0K 1K 166960K 350 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 223 159K 167K 166960K 2909 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 90K 166960K 1175 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 34 8630K 8694K 166960K 4687 0 kqueue 13 20K 20K 166960K 21 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 38 0 34 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 41 0 20 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 9 0 3 1 0 1 1 0 8 0 arp 96 10 0 0 1 0 1 1 0 8 0 inpcb 328 64 0 53 1 0 1 1 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 104 16 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 256 437 0 0 28 0 28 28 0 8 0 art_table 40 439 0 0 5 0 5 5 0 8 0 art_node 32 96 0 9 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1562 0 53 95 0 95 95 0 8 0 ffsino 256 1562 0 53 95 0 95 95 0 8 0 nchpl 144 1754 0 67 63 0 63 63 0 8 0 uvmvnodes 80 1644 0 0 34 0 34 34 0 8 0 vnodes 216 1644 0 0 92 0 92 92 0 8 0 namei 1024 5107 0 5107 2 0 2 2 0 8 2 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 6228 0 6228 8 0 8 8 1 8 8 plimitpl 152 27 0 11 1 0 1 1 0 8 0 sigapl 424 420 0 377 6 0 6 6 0 8 1 knotepl 120 2780 0 2733 2 0 2 2 0 8 0 kqueuepl 184 18 0 8 1 0 1 1 0 8 0 pipepl 304 99 0 72 3 0 3 3 0 8 0 fdescpl 448 407 0 377 4 0 4 4 0 8 0 filepl 120 1307 0 1086 7 0 7 7 0 8 0 lockfpl 104 8 0 4 1 0 1 1 0 8 0 lockfspl 48 6 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 67 0 56 1 0 1 1 0 8 0 zombiepl 144 377 0 377 1 0 1 1 0 8 1 processpl 1152 420 0 377 4 0 4 4 0 8 0 procpl 664 435 0 382 5 0 5 5 0 8 0 sockpl 552 143 0 107 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2415 0 2363 13 0 13 13 0 8 6 mcl2k 2048 154 0 152 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3757 0 3624 10 0 10 10 0 8 1 bufpl 280 2835 0 117 195 0 195 195 0 8 0 anonpl 24 98976 0 95918 23 0 23 23 0 187 4 amapchunkpl 152 8252 0 7773 19 0 19 19 0 158 0 amappl16 200 1925 0 1908 5 0 5 5 0 8 4 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 106 0 96 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 0 1 1 0 8 1 amappl12 168 1024 0 993 2 0 2 2 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 0 1 1 0 8 1 amappl9 144 249 0 249 1 0 1 1 0 8 1 amappl8 136 18 0 17 1 0 1 1 0 8 0 amappl7 128 106 0 96 1 0 1 1 0 8 0 amappl6 120 176 0 173 1 0 1 1 0 8 0 amappl5 112 118 0 112 1 0 1 1 0 8 0 amappl4 104 261 0 248 1 0 1 1 0 8 0 amappl3 96 1177 0 1086 3 0 3 3 0 8 0 amappl2 88 635 0 563 2 0 2 2 0 8 0 amappl1 80 8012 0 7460 12 0 12 12 0 8 0 amappl 88 2276 0 2117 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 24 407 0 377 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 407 0 377 1 0 1 1 0 8 0 vmmpekpl 168 4759 0 4727 2 0 2 2 0 8 0 vmmpepl 168 32873 0 31031 81 0 81 81 0 357 0 vmsppl 368 406 0 377 4 0 4 4 0 8 1 rwobjpl 40 13691 0 11222 26 0 26 26 0 8 1 pdppl 4096 820 0 754 90 14 76 76 0 8 10 pvpl 32 210074 0 201650 69 0 69 69 0 265 1 pmappl 216 406 0 377 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 353 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9696c0,0,ffff80003c969630,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001488a00,ffff80003c969768,ffff80003c9696c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805f03a400,ffff800001482ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001482ad8,fffffd805f03a400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001482ad8,0,ffff80003c969918,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aad10,3,ffff80003c969a10,808,ffff80003c969ab0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aad10,ffff80003c969b60,ffff80003c969ab0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969b60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969b60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9348989aa10, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b7c0810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9696c0,0,ffff80003c969630,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001488a00,ffff80003c969768,ffff80003c9696c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805f03a400,ffff800001482ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001482ad8,fffffd805f03a400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001482ad8,0,ffff80003c969918,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aad10,3,ffff80003c969a10,808,ffff80003c969ab0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aad10,ffff80003c969b60,ffff80003c969ab0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c969b60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c969b60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9348989aa10, count: -10