login: uvm_fault(0xffffffff83899ef8, 0xffff80000149706a, 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 * 75682 40928 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca46e40,0,ffff80003ca46db0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000149f000,ffff80003ca46ee8,ffff80003ca46e40,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb9ae00,ffff800001482010) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001482010,fffffd807eb9ae00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001482010,0,ffff80003ca47098,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000391482d0,3,ffff80003ca47190,808,ffff80003ca47230) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000391482d0,ffff80003ca472e0,ffff80003ca47230) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca472e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca472e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ab039a2d10, 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(0xffffffff83899ef8, 0xffff80000149706a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca46e40,0,ffff80003ca46db0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000149f000,ffff80003ca46ee8,ffff80003ca46e40,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb9ae00,ffff800001482010) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001482010,fffffd807eb9ae00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001482010,0,ffff80003ca47098,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000391482d0,3,ffff80003ca47190,808,ffff80003ca47230) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000391482d0,ffff80003ca472e0,ffff80003ca47230) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca472e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca472e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ab039a2d10, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003ca46c90 rbx 0xde rdx 0 rcx 0xffff800001496f80 rax 0xfffffd807eb9a0e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x1522ff68807a8419 r11 0xa7724ef42776829a r12 0x21 r13 0xfffffd807eb9a000 r14 0xfffffd8070fbd5f0 r15 0xffff800000039058 rip 0xffffffff81496cc7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003ca46c10 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=75682 pid=40928 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=0xffff800039148038,0xffffffff83941bd8 process=0xffff80003b96a480 user=0xffff80003ca42000, vmspace=0xfffffd806ba502f0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40928 230190 25280 0 2 0 syz-executor *40928 75682 25280 0 7 0x4000000 syz-executor 3750 339196 45968 0 2 0 syz-executor 3750 120401 45968 0 3 0x4000080 fifow syz-executor 15534 187412 40005 0 2 0 syz-executor 15534 392204 40005 0 3 0x4000080 fsleep syz-executor 63828 46277 0 0 3 0x14280 nfsidl nfsio 86087 197215 0 0 3 0x14280 nfsidl nfsio 70355 115380 0 0 3 0x14280 nfsidl nfsio 93260 321874 0 0 3 0x14280 nfsidl nfsio 51624 337655 0 0 3 0x14280 nfsidl nfsio 77947 396752 0 0 3 0x14280 nfsidl nfsio 89332 472014 0 0 3 0x14280 nfsidl nfsio 60145 492693 0 0 3 0x14280 nfsidl nfsio 20727 31668 0 0 3 0x14280 nfsidl nfsio 20462 184940 0 0 3 0x14280 nfsidl nfsio 61119 514020 0 0 3 0x14280 nfsidl nfsio 98989 138244 0 0 3 0x14280 nfsidl nfsio 83954 92185 0 0 3 0x14280 nfsidl nfsio 28890 517688 0 0 3 0x14280 nfsidl nfsio 42946 344695 0 0 3 0x14280 nfsidl nfsio 57846 61097 0 0 3 0x14280 nfsidl nfsio 56525 453475 0 0 3 0x14280 nfsidl nfsio 18659 33748 0 0 3 0x14280 nfsidl nfsio 98327 192201 0 0 3 0x14280 nfsidl nfsio 599 244839 0 0 3 0x14280 nfsidl nfsio 6619 497929 0 0 3 0x14200 acct acct 43711 101548 33591 0 3 0x80 nanoslp syz-executor 43711 248478 33591 0 3 0x4000080 kqread syz-executor 43711 121084 33591 0 3 0x4000080 fsleep syz-executor 43711 347283 33591 0 3 0x4000080 fsleep syz-executor 1916 104574 85017 0 3 0x80 nanoslp syz-executor 1916 81663 85017 0 3 0x4000080 kqsel syz-executor 57829 406996 95349 0 3 0x80 nanoslp syz-executor 57829 60806 95349 0 3 0x4000080 fsleep syz-executor 57829 444431 95349 0 3 0x4000080 kqsel syz-executor 57829 464280 95349 0 3 0x4000080 fsleep syz-executor 51996 75619 62062 0 3 0x80 nanoslp syz-executor 51996 188032 62062 0 3 0x4000080 kqsel syz-executor 51996 122271 62062 0 3 0x4000080 fsleep syz-executor 252 346671 39155 0 3 0x80 nanoslp syz-executor 252 498435 39155 0 3 0x4000080 pppxread syz-executor 252 274482 39155 0 3 0x4000000 inode syz-executor 252 407365 39155 0 3 0x4000080 fsleep syz-executor 82372 274881 1 0 3 0x100083 ttyin getty 14850 297937 0 0 3 0x14200 bored sosplice 33591 403020 79104 0 3 0x82 nanoslp syz-executor 85017 172889 79104 0 3 0x82 nanoslp syz-executor 40005 81371 79104 0 3 0x82 nanoslp syz-executor 62062 152912 79104 0 3 0x82 nanoslp syz-executor 25280 257144 79104 0 3 0x82 nanoslp syz-executor 95349 364248 79104 0 3 0x82 nanoslp syz-executor 39155 483613 79104 0 3 0x82 nanoslp syz-executor 45968 241468 79104 0 3 0x82 nanoslp syz-executor 79104 71209 86414 0 3 0x82 kqread syz-executor 86414 101879 81910 0 3 0x10008a sigsusp ksh 81910 158112 43943 0 3 0x98 kqread sshd-session 43943 362702 25149 0 3 0x92 kqread sshd-session 25149 25954 1 0 3 0x88 kqread sshd 55263 430113 42625 73 3 0x1100090 kqread syslogd 42625 169268 1 0 3 0x100082 sbwait syslogd 9284 107332 1 0 3 0x100080 kqread resolvd 14474 158853 1862 77 3 0x100092 kqread dhcpleased 7949 176014 1862 77 3 0x100092 kqread dhcpleased 1862 275116 1 0 3 0x80 kqread dhcpleased 4789 312500 0 0 3 0x14200 bored smr 47015 398079 0 0 2 0x14200 zerothread 2159 199287 0 0 3 0x14200 aiodoned aiodoned 37977 212979 0 0 3 0x14200 syncer update 46179 35591 0 0 3 0x14200 cleaner cleaner 2651 201266 0 0 3 0x14200 reaper reaper 89769 75091 0 0 3 0x14200 pgdaemon pagedaemon 74191 205490 0 0 3 0x14200 bored viomb 55165 150882 0 0 3 0x40014200 acpi0 acpi0 32535 441570 0 0 3 0x14200 bored softnet7 15769 342166 0 0 3 0x14200 bored softnet6 25023 185856 0 0 3 0x14200 bored softnet5 93709 325132 0 0 3 0x14200 bored softnet4 13051 205200 0 0 3 0x14200 bored softnet3 93837 36660 0 0 3 0x14200 bored softnet2 38300 111107 0 0 3 0x14200 bored softnet1 27182 453757 0 0 3 0x14200 bored softnet0 39562 262303 0 0 3 0x14200 bored systqmp 72265 517068 0 0 3 0x14200 bored systq 39694 130112 0 0 3 0x40014200 tmoslp softclock 53128 300251 0 0 3 0x40014200 idle0 1 227923 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 10197 11180K 11302K 166960K 11537 0 pcb 50 16K 17K 166960K 273 0 rtable 224 8K 8K 166960K 334 0 pf 32 13K 17K 166960K 57 0 ifaddr 40 6K 7K 166960K 56 0 ifgroup 54 2K 2K 166960K 77 0 sysctl 1 1K 9K 166960K 6 0 counters 33 17K 18K 166960K 45 0 ioctlops 0 0K 4K 166960K 62 0 iov 0 0K 12K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1348 85K 85K 166960K 1534 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 354 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 124K 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 2 0K 0K 166960K 19 0 in_multi 88 6K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 401 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 235 151K 159K 166960K 4518 0 UVM aobj 13 2K 2K 166960K 16 0 pinsyscall 39 78K 96K 166960K 1387 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 12 0K 2K 166960K 35 0 temp 46 8632K 8696K 166960K 9614 0 kqueue 15 22K 30K 166960K 68 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 53 0 49 1 0 1 1 0 8 0 rtentry 136 108 0 16 4 0 4 4 0 8 0 unpcb 144 256 0 239 4 0 4 4 0 8 3 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 156 0 51 10 0 10 10 0 8 0 arp 88 11 0 1 1 0 1 1 0 8 0 inpcb 328 468 0 325 13 0 13 13 0 8 1 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 20 0 3 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 9 0 9 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfrule 1344 3 0 3 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 503 0 86 28 0 28 28 0 8 0 art_table 40 506 0 86 5 0 5 5 0 8 0 art_node 32 108 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 8 0 1 1 0 1 1 0 8 0 shmpl 112 13 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1942 0 439 95 0 95 95 0 8 0 ffsino 256 1942 0 439 95 0 95 95 0 8 0 nchpl 144 2429 0 750 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 2113 0 0 44 0 44 44 0 8 0 vnodes 216 2113 0 0 118 0 118 118 0 8 0 namei 1024 7571 0 7570 2 0 2 2 0 8 1 kstatmem 264 38 0 14 3 0 3 3 0 8 1 scxspl 216 9162 0 9162 8 0 8 8 1 8 8 plimitpl 152 66 0 49 1 0 1 1 0 8 0 sigapl 424 650 0 578 9 0 9 9 0 8 1 knotepl 120 12502 0 12451 22 12 10 22 0 8 8 kqueuepl 184 101 0 87 1 0 1 1 0 8 0 pipepl 304 153 0 126 3 0 3 3 0 8 0 fdescpl 448 608 0 578 5 0 5 5 0 8 1 filepl 120 2954 0 2602 11 0 11 11 0 8 0 lockfpl 104 66 0 62 1 0 1 1 0 8 0 lockfspl 48 30 0 26 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 34 0 18 1 0 1 1 0 8 0 ucredpl 104 404 0 392 1 0 1 1 0 8 0 zombiepl 144 578 0 578 1 0 1 1 0 8 1 processpl 1168 650 0 578 6 0 6 6 0 8 0 procpl 664 966 0 879 8 0 8 8 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 552 881 0 717 12 0 12 12 0 8 0 mcl64k 65536 9 0 9 1 0 1 1 0 8 1 mcl16k 16384 8 0 8 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 72 0 72 1 0 1 1 0 8 1 mcl4k 4096 2732 0 2681 14 0 14 14 0 8 7 mcl2k 2048 530 0 528 1 0 1 1 0 8 0 mtagpl 96 6 0 6 1 0 1 1 0 8 1 mbufpl 256 7556 0 7407 13 0 13 13 0 8 1 bufpl 280 4384 0 119 305 0 305 305 0 8 0 anonpl 24 101432 0 97862 44 0 44 44 0 187 19 amapchunkpl 152 13909 0 13389 26 0 26 26 0 158 5 amappl16 200 1478 0 1450 14 3 11 14 0 8 8 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 106 0 96 1 0 1 1 0 8 0 amappl13 176 3 0 2 1 0 1 1 0 8 0 amappl12 168 1219 0 1189 3 0 3 3 0 8 1 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 11 0 10 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 0 1 1 0 8 1 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 102 0 92 1 0 1 1 0 8 0 amappl6 120 171 0 168 1 0 1 1 0 8 0 amappl5 112 112 0 105 1 0 1 1 0 8 0 amappl4 104 272 0 255 1 0 1 1 0 8 0 amappl3 96 2492 0 2380 3 0 3 3 0 8 0 amappl2 88 622 0 567 2 0 2 2 0 8 0 amappl1 80 8966 0 8416 13 0 13 13 0 8 0 amappl 88 3823 0 3653 5 0 5 5 0 92 1 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 15 0 3 1 0 1 1 0 8 0 uaddrrnd 24 608 0 578 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 608 0 578 1 0 1 1 0 8 0 vmmpekpl 168 6376 0 6354 2 0 2 2 0 8 0 vmmpepl 168 43522 0 41625 94 0 94 94 0 357 11 vmsppl 368 607 0 578 4 0 4 4 0 8 1 rwobjpl 40 15770 0 12797 31 0 31 31 0 8 0 pdppl 4096 1222 0 1156 96 30 66 82 0 8 0 pvpl 32 273226 0 263651 109 0 109 109 0 265 27 pmappl 216 607 0 578 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 382 0 30 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca46e40,0,ffff80003ca46db0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000149f000,ffff80003ca46ee8,ffff80003ca46e40,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb9ae00,ffff800001482010) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001482010,fffffd807eb9ae00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001482010,0,ffff80003ca47098,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000391482d0,3,ffff80003ca47190,808,ffff80003ca47230) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000391482d0,ffff80003ca472e0,ffff80003ca47230) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca472e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca472e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ab039a2d10, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070fbd5f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003ca46e40,0,ffff80003ca46db0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000149f000,ffff80003ca46ee8,ffff80003ca46e40,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb9ae00,ffff800001482010) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800001482010,fffffd807eb9ae00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001482010,0,ffff80003ca47098,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000391482d0,3,ffff80003ca47190,808,ffff80003ca47230) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000391482d0,ffff80003ca472e0,ffff80003ca47230) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003ca472e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca472e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ab039a2d10, count: -10