uvm_fault(0xffffffff8384e2e0, 0xffff80000149b04a, 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 *238476 12824 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca0aeb0,0,ffff80003ca0ae20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001498400,ffff80003ca0af58,ffff80003ca0aeb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dfdcb00,ffff800001487150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001487150,fffffd806dfdcb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001487150,0,ffff80003ca0b108,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9914e8,5,ffff80003ca0b200,808,ffff80003ca0b2a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9914e8,ffff80003ca0b350,ffff80003ca0b2a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca0b350) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca0b350) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaa4aef36e40, 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(0xffffffff8384e2e0, 0xffff80000149b04a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca0aeb0,0,ffff80003ca0ae20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001498400,ffff80003ca0af58,ffff80003ca0aeb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dfdcb00,ffff800001487150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001487150,fffffd806dfdcb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001487150,0,ffff80003ca0b108,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9914e8,5,ffff80003ca0b200,808,ffff80003ca0b2a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9914e8,ffff80003ca0b350,ffff80003ca0b2a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca0b350) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca0b350) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaa4aef36e40, count: -10 ddb> show registers rdi 0xffff800031530000 rsi 0x945 rbp 0xffff80003ca0ad00 rbx 0xde rdx 0xffff800031530000 rcx 0xffff80000149af60 rax 0xfffffd806dfdcae0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x6d2a11a3dd798a4b r11 0x11949b9ecc3cafca r12 0x1d r13 0xfffffd806dfdca00 r14 0xfffffd806809b700 r15 0xffff800000039058 rip 0xffffffff81628637 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003ca0ac80 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=238476 pid=12824 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=52, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c991250,0xffffffff8389ad60 process=0xffff80003c9c4928 user=0xffff80003ca06000, vmspace=0xfffffd806f74b2f0 estcpu=2, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12824 291567 44839 0 2 0 syz-executor *12824 238476 44839 0 7 0x4000000 syz-executor 68725 85883 48915 0 2 0 syz-executor 68725 477668 48915 0 3 0x4000080 fsleep syz-executor 7848 164729 53450 0 2 0 syz-executor 7848 177949 53450 0 3 0x4000080 fsleep syz-executor 73206 177908 74171 0 2 0 syz-executor 73206 213720 74171 0 3 0x4000080 fsleep syz-executor 67912 398694 2002 0 2 0 syz-executor 67912 475627 2002 0 2 0x4000000 syz-executor 22000 7986 0 0 3 0x14200 bored sosplice 59016 217582 32461 0 2 0 syz-executor 59016 253107 32461 0 3 0x4000080 kqread syz-executor 59016 491711 32461 0 3 0x4000080 fsleep syz-executor 59016 43189 32461 0 3 0x4000080 fsleep syz-executor 45011 91800 0 0 3 0x14280 nfsidl nfsio 49380 54703 0 0 3 0x14280 nfsidl nfsio 67049 82977 0 0 3 0x14280 nfsidl nfsio 7234 204028 0 0 3 0x14280 nfsidl nfsio 76152 86187 0 0 3 0x14280 nfsidl nfsio 92541 294989 0 0 3 0x14280 nfsidl nfsio 72046 519898 0 0 3 0x14280 nfsidl nfsio 25159 154853 0 0 3 0x14280 nfsidl nfsio 15264 165034 0 0 3 0x14280 nfsidl nfsio 16900 370596 0 0 3 0x14280 nfsidl nfsio 38274 245470 0 0 3 0x14280 nfsidl nfsio 60018 400882 0 0 3 0x14280 nfsidl nfsio 94857 365478 0 0 3 0x14280 nfsidl nfsio 88730 14883 0 0 3 0x14280 nfsidl nfsio 3806 406384 0 0 3 0x14280 nfsidl nfsio 66854 446946 0 0 3 0x14280 nfsidl nfsio 80861 72784 0 0 3 0x14280 nfsidl nfsio 41588 281547 0 0 3 0x14280 nfsidl nfsio 91615 30613 0 0 3 0x14280 nfsidl nfsio 18948 153224 0 0 3 0x14280 nfsidl nfsio 32461 177674 20738 0 2 0xc82 syz-executor 26572 522332 20738 0 2 0xc82 syz-executor 2002 4383 20738 0 2 0xc82 syz-executor 44839 124284 20738 0 3 0x82 nanoslp syz-executor 74171 165230 20738 0 3 0x82 nanoslp syz-executor 48915 118907 20738 0 3 0x82 nanoslp syz-executor 13625 338239 20738 0 2 0x2 syz-executor 53450 251819 20738 0 3 0x82 nanoslp syz-executor 20738 253363 80181 0 3 0x82 kqread syz-executor 80181 217226 1343 0 3 0x10008a sigsusp ksh 1343 80301 70427 0 3 0x98 kqread sshd-session 70427 17091 88745 0 3 0x92 kqread sshd-session 31278 394748 1 0 3 0x100083 ttyin getty 88745 90853 1 0 3 0x88 kqread sshd 88263 472810 45649 73 3 0x1100090 kqread syslogd 45649 61000 1 0 3 0x100082 sbwait syslogd 88648 59628 1 0 3 0x100080 kqread resolvd 45932 211072 92876 77 3 0x100092 kqread dhcpleased 30951 176080 92876 77 3 0x100092 kqread dhcpleased 92876 260160 1 0 3 0x80 kqread dhcpleased 90507 376013 0 0 3 0x14200 bored smr 19654 282770 0 0 2 0x14200 zerothread 10950 110864 0 0 3 0x14200 aiodoned aiodoned 10284 158094 0 0 3 0x14200 syncer update 21226 298092 0 0 3 0x14200 cleaner cleaner 50958 392890 0 0 3 0x14200 reaper reaper 5916 489928 0 0 3 0x14200 pgdaemon pagedaemon 36365 150070 0 0 3 0x14200 bored viomb 90060 405144 0 0 3 0x40014200 acpi0 acpi0 88977 462832 0 0 3 0x14200 bored softnet7 17868 175199 0 0 3 0x14200 bored softnet6 75402 356451 0 0 3 0x14200 bored softnet5 57308 147562 0 0 3 0x14200 bored softnet4 9340 196581 0 0 3 0x14200 bored softnet3 86565 50531 0 0 3 0x14200 bored softnet2 27856 87028 0 0 3 0x14200 bored softnet1 15709 383953 0 0 3 0x14200 bored softnet0 69035 238529 0 0 3 0x14200 bored systqmp 98036 99328 0 0 3 0x14200 bored systq 89438 96367 0 0 3 0x40014200 tmoslp softclock 27673 494229 0 0 3 0x40014200 idle0 1 151702 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 10178 11042K 11239K 166960K 11285 0 pcb 17 12K 12K 166960K 26 0 rtable 217 7K 7K 166960K 283 0 pf 30 12K 13K 166960K 38 0 ifaddr 42 7K 7K 166960K 47 0 ifgroup 50 2K 2K 166960K 56 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 18K 166960K 37 0 ioctlops 0 0K 4K 166960K 37 0 iov 0 0K 2K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1340 84K 84K 166960K 1397 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 182 0 sigio 0 0K 0K 166960K 3 0 proc 59 59K 124K 166960K 477 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 4 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 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 353 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 222 159K 167K 166960K 3154 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 38 76K 96K 166960K 1214 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 11 0K 2K 166960K 30 0 temp 35 8634K 8698K 166960K 3975 0 kqueue 13 20K 24K 166960K 25 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 43 0 38 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 246 0 227 6 0 6 6 0 8 5 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 82 0 78 5 0 5 5 0 8 4 arp 88 10 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 144 0 137 5 0 5 5 0 8 4 nd6 104 16 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 1 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 5 0 5 1 0 1 1 0 8 1 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 semapl 112 2 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1643 0 139 95 0 95 95 0 8 0 ffsino 256 1643 0 139 95 0 95 95 0 8 0 nchpl 144 1904 0 224 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 1733 0 0 36 0 36 36 0 8 0 vnodes 216 1733 0 0 97 0 97 97 0 8 0 namei 1024 5871 0 5871 2 0 2 2 0 8 2 kstatmem 264 28 0 6 2 0 2 2 0 8 0 scxspl 216 6488 0 6488 8 0 8 8 1 8 8 plimitpl 152 35 0 19 1 0 1 1 0 8 0 sigapl 424 487 0 417 8 0 8 8 0 8 0 knotepl 120 4991 0 4944 9 0 9 9 0 8 7 kqueuepl 184 32 0 22 1 0 1 1 0 8 0 pipepl 304 104 0 77 3 0 3 3 0 8 0 fdescpl 448 446 0 417 5 0 5 5 0 8 1 filepl 120 1989 0 1767 14 0 14 14 0 8 7 lockfpl 104 150 0 148 2 0 2 2 0 8 1 lockfspl 48 11 0 9 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 195 0 184 1 0 1 1 0 8 0 zombiepl 144 418 0 417 1 0 1 1 0 8 0 processpl 1152 487 0 417 6 0 6 6 0 8 0 procpl 664 567 0 489 8 0 8 8 0 8 1 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 552 437 0 405 15 4 11 15 0 8 8 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 2524 0 2472 13 0 13 13 0 8 5 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 222 0 220 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4223 0 4075 11 0 11 11 0 8 0 bufpl 280 2874 0 117 197 0 197 197 0 8 0 anonpl 24 97078 0 93939 26 0 26 26 0 187 6 amapchunkpl 152 9177 0 8725 21 0 21 21 0 158 2 amappl16 200 1721 0 1702 5 0 5 5 0 8 4 amappl15 192 35 0 35 1 0 1 1 0 8 1 amappl14 184 104 0 94 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 0 1 1 0 8 1 amappl12 168 1056 0 1027 3 0 3 3 0 8 1 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 0 1 1 0 8 1 amappl9 144 247 0 247 1 0 1 1 0 8 1 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 168 0 157 1 0 1 1 0 8 0 amappl6 120 177 0 174 1 0 1 1 0 8 0 amappl5 112 113 0 106 1 0 1 1 0 8 0 amappl4 104 264 0 248 1 0 1 1 0 8 0 amappl3 96 1419 0 1332 3 0 3 3 0 8 0 amappl2 88 673 0 603 2 0 2 2 0 8 0 amappl1 80 8066 0 7517 13 0 13 13 0 8 1 amappl 88 2503 0 2349 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 446 0 417 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 446 0 417 1 0 1 1 0 8 0 vmmpekpl 168 5083 0 5059 2 0 2 2 0 8 0 vmmpepl 168 34932 0 33115 82 0 82 82 0 357 0 vmsppl 368 445 0 417 4 0 4 4 0 8 1 rwobjpl 40 13938 0 11383 27 0 27 27 0 8 0 pdppl 4096 898 0 834 98 32 66 82 0 8 2 pvpl 32 219993 0 211028 85 0 85 85 0 265 12 pmappl 216 445 0 417 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 368 0 32 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca0aeb0,0,ffff80003ca0ae20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001498400,ffff80003ca0af58,ffff80003ca0aeb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dfdcb00,ffff800001487150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001487150,fffffd806dfdcb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001487150,0,ffff80003ca0b108,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9914e8,5,ffff80003ca0b200,808,ffff80003ca0b2a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9914e8,ffff80003ca0b350,ffff80003ca0b2a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca0b350) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca0b350) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaa4aef36e40, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806809b700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca0aeb0,0,ffff80003ca0ae20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001498400,ffff80003ca0af58,ffff80003ca0aeb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806dfdcb00,ffff800001487150) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001487150,fffffd806dfdcb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001487150,0,ffff80003ca0b108,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9914e8,5,ffff80003ca0b200,808,ffff80003ca0b2a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9914e8,ffff80003ca0b350,ffff80003ca0b2a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca0b350) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca0b350) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaa4aef36e40, count: -10