uvm_fault(0xffffffff83868a50, 0xffff80000149506a, 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 *366050 76368 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c99d030,0,ffff80003c99cfa0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001492900,ffff80003c99d0d8,ffff80003c99d030,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c5f7f00,ffff80000147e688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147e688,fffffd806c5f7f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147e688,0,ffff80003c99d288,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9a6d20,3,ffff80003c99d380,808,ffff80003c99d420) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9a6d20,ffff80003c99d4d0,ffff80003c99d420) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c99d4d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d4d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafedc407f10, 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(0xffffffff83868a50, 0xffff80000149506a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c99d030,0,ffff80003c99cfa0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001492900,ffff80003c99d0d8,ffff80003c99d030,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c5f7f00,ffff80000147e688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147e688,fffffd806c5f7f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147e688,0,ffff80003c99d288,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9a6d20,3,ffff80003c99d380,808,ffff80003c99d420) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9a6d20,ffff80003c99d4d0,ffff80003c99d420) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c99d4d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d4d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafedc407f10, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c99ce80 rbx 0xde rdx 0 rcx 0xffff800001494f80 rax 0xfffffd806c5f76e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xd996df17d69dbff2 r11 0xdc92c1d780085fa1 r12 0x19 r13 0xfffffd806c5f7600 r14 0xfffffd806b9a1568 r15 0xffff800000039058 rip 0xffffffff81154d57 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c99ce00 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=366050 pid=76368 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=0xffff80003c9a6fb8,0xffff80003c9a7260 process=0xffff8000ffffa418 user=0xffff80003c998000, vmspace=0xfffffd806c16a010 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47131 453277 74732 0 2 0 syz-executor 47131 307655 74732 0 3 0x4000080 fsleep syz-executor 76368 161988 34685 0 2 0 syz-executor *76368 366050 34685 0 7 0x4000000 syz-executor 77111 99505 77218 0 2 0x2 sshd-session 76047 215055 87031 0 2 0 syz-executor 76047 124941 87031 0 2 0x4000000 syz-executor 91644 29318 28179 0 2 0 syz-executor 91644 55360 28179 0 3 0x4000080 dtread syz-executor 91644 472269 28179 0 2 0x4000000 syz-executor 71436 181446 0 0 3 0x14200 bored sosplice 46301 262677 97965 0 3 0x80 nanoslp syz-executor 46301 507490 97965 0 3 0x4000080 kqsel syz-executor 46301 343725 97965 0 3 0x4000080 fsleep syz-executor 56501 201653 16524 0 3 0x80 nanoslp syz-executor 56501 514357 16524 0 3 0x4000080 netcon syz-executor 56501 195972 16524 0 3 0x4000080 kqread syz-executor 56501 213058 16524 0 3 0x4000080 kqread syz-executor 74732 400426 36441 0 3 0x82 nanoslp syz-executor 87031 366872 36441 0 3 0x82 nanoslp syz-executor 16524 27908 36441 0 3 0x82 nanoslp syz-executor 34685 218996 36441 0 2 0xc82 syz-executor 28179 112050 36441 0 3 0x82 nanoslp syz-executor 42290 352397 36441 0 2 0x2 syz-executor 97965 435661 36441 0 3 0x82 nanoslp syz-executor 85066 183594 36441 0 2 0x2 syz-executor 36441 107889 45653 0 2 0x2 syz-executor 45653 197387 36370 0 3 0x10008a sigsusp ksh 36370 95565 62663 0 3 0x98 kqread sshd-session 62663 136584 77218 0 3 0x92 kqread sshd-session 99 341019 1 0 3 0x100083 ttyin getty 77218 243299 1 0 3 0x88 kqread sshd 92762 450526 79561 73 3 0x1100090 kqread syslogd 79561 500132 1 0 3 0x100082 sbwait syslogd 82995 20197 1 0 3 0x100080 kqread resolvd 52092 333468 43911 77 3 0x100092 kqread dhcpleased 47624 46934 43911 77 3 0x100092 kqread dhcpleased 43911 84284 1 0 3 0x80 kqread dhcpleased 30183 461318 0 0 3 0x14200 bored smr 34417 80815 0 0 2 0x14200 zerothread 35758 373748 0 0 3 0x14200 aiodoned aiodoned 21178 514193 0 0 3 0x14200 syncer update 82278 289547 0 0 3 0x14200 cleaner cleaner 75279 160093 0 0 3 0x14200 reaper reaper 13933 356337 0 0 3 0x14200 pgdaemon pagedaemon 7681 231439 0 0 3 0x14200 bored viomb 59787 43982 0 0 3 0x40014200 acpi0 acpi0 80053 124470 0 0 3 0x14200 bored softnet7 5548 513086 0 0 3 0x14200 bored softnet6 57965 136862 0 0 3 0x14200 bored softnet5 23366 375370 0 0 3 0x14200 bored softnet4 19176 73107 0 0 3 0x14200 bored softnet3 5421 47871 0 0 3 0x14200 bored softnet2 83455 281930 0 0 3 0x14200 bored softnet1 91235 203940 0 0 2 0x14200 softnet0 32265 22775 0 0 3 0x14200 bored systqmp 10120 238663 0 0 3 0x14200 bored systq 54255 42664 0 0 2 0x40014200 softclock 23958 260039 0 0 3 0x40014200 idle0 1 308975 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 11059K 11189K 166960K 11310 0 pcb 17 12K 12K 166960K 37 0 rtable 214 7K 7K 166960K 277 0 pf 30 12K 13K 166960K 34 0 ifaddr 42 7K 7K 166960K 47 0 ifgroup 50 2K 2K 166960K 54 0 sysctl 1 1K 9K 166960K 8 0 counters 32 17K 17K 166960K 34 0 ioctlops 0 0K 4K 166960K 35 0 iov 0 0K 16K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1348 85K 85K 166960K 1387 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 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 187 0 sigio 0 0K 0K 166960K 1 0 proc 59 59K 124K 166960K 482 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 1 0 in_multi 99 7K 7K 166960K 100 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 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 342 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 219 144K 144K 166960K 3122 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 39 78K 96K 166960K 1194 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 27 2K 2K 166960K 29 0 temp 36 8630K 8694K 166960K 4165 0 kqueue 16 26K 26K 166960K 32 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 99 0 4 4 0 4 4 0 8 0 unpcb 144 57 0 40 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 30 0 20 2 0 2 2 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 170 0 157 7 0 7 7 0 8 5 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 104 18 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 2 0 2 1 0 1 1 0 8 1 pfrule 1344 1 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 445 0 6 28 0 28 28 0 8 0 art_table 40 447 0 6 5 0 5 5 0 8 0 art_node 32 99 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 1 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 1637 0 130 95 0 95 95 0 8 0 ffsino 256 1637 0 130 95 0 95 95 0 8 0 nchpl 144 1888 0 207 63 0 63 63 0 8 0 uvmvnodes 80 1737 0 0 36 0 36 36 0 8 0 vnodes 216 1737 0 0 97 0 97 97 0 8 0 namei 1024 5562 0 5562 2 0 2 2 0 8 2 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 6554 0 6554 8 0 8 8 1 8 8 plimitpl 152 30 0 14 1 0 1 1 0 8 0 sigapl 424 464 0 414 7 0 7 7 0 8 1 knotepl 120 4953 0 4896 2 0 2 2 0 8 0 kqueuepl 184 69 0 56 2 0 2 2 0 8 1 pipepl 304 101 0 74 3 0 3 3 0 8 0 fdescpl 448 443 0 414 5 0 5 5 0 8 1 filepl 120 1717 0 1496 9 0 9 9 0 8 0 lockfpl 104 20 0 17 1 0 1 1 0 8 0 lockfspl 48 9 0 6 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 104 0 93 1 0 1 1 0 8 0 zombiepl 144 414 0 414 1 0 1 1 0 8 1 processpl 1152 464 0 414 5 0 5 5 0 8 1 procpl 664 548 0 488 6 0 6 6 0 8 0 sosppl 168 2 0 1 1 0 1 1 0 8 0 sockpl 552 267 0 233 8 0 8 8 0 8 5 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2542 0 2488 13 0 13 13 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 288 0 285 1 0 1 1 0 8 0 mtagpl 96 9 0 4 1 0 1 1 0 8 0 mbufpl 256 4448 0 4303 10 0 10 10 0 8 0 bufpl 280 2913 0 117 200 0 200 200 0 8 0 anonpl 24 90280 0 85054 32 0 32 32 0 187 0 amapchunkpl 152 9051 0 8477 24 0 24 24 0 158 0 amappl16 200 1359 0 1339 4 0 4 4 0 8 2 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 106 0 95 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 0 1 1 0 8 1 amappl12 168 1043 0 1014 3 0 3 3 0 8 1 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 6 0 5 1 0 1 1 0 8 0 amappl9 144 261 0 261 1 0 1 1 0 8 1 amappl8 136 19 0 18 1 0 1 1 0 8 0 amappl7 128 92 0 81 1 0 1 1 0 8 0 amappl6 120 167 0 163 1 0 1 1 0 8 0 amappl5 112 112 0 105 1 0 1 1 0 8 0 amappl4 104 252 0 238 1 0 1 1 0 8 0 amappl3 96 1451 0 1365 3 0 3 3 0 8 0 amappl2 88 664 0 590 2 0 2 2 0 8 0 amappl1 80 8185 0 7560 13 0 13 13 0 8 0 amappl 88 2504 0 2351 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 443 0 414 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 443 0 414 1 0 1 1 0 8 0 vmmpekpl 168 5054 0 5024 2 0 2 2 0 8 0 vmmpepl 168 33905 0 32026 86 0 86 86 0 357 0 vmsppl 368 442 0 414 4 0 4 4 0 8 1 rwobjpl 40 13655 0 11002 27 0 27 27 0 8 0 pdppl 4096 892 0 828 96 16 80 82 0 8 16 pvpl 32 211155 0 200463 91 0 91 91 0 265 0 pmappl 216 442 0 414 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 363 0 16 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c99d030,0,ffff80003c99cfa0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001492900,ffff80003c99d0d8,ffff80003c99d030,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c5f7f00,ffff80000147e688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147e688,fffffd806c5f7f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147e688,0,ffff80003c99d288,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9a6d20,3,ffff80003c99d380,808,ffff80003c99d420) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9a6d20,ffff80003c99d4d0,ffff80003c99d420) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c99d4d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d4d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafedc407f10, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b9a1568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c99d030,0,ffff80003c99cfa0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001492900,ffff80003c99d0d8,ffff80003c99d030,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c5f7f00,ffff80000147e688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147e688,fffffd806c5f7f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147e688,0,ffff80003c99d288,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c9a6d20,3,ffff80003c99d380,808,ffff80003c99d420) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c9a6d20,ffff80003c99d4d0,ffff80003c99d420) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c99d4d0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d4d0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xafedc407f10, count: -10