uvm_fault(0xffffffff83a748e8, 0xffff80000160602a, 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 *146032 15277 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c924d20,0,ffff80003c924c90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff80003c924dc8,ffff80003c924d20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8075bef700,ffff800010fe1598) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1598,fffffd8075bef700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1598,0,ffff80003c924f78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7707e0,5,ffff80003c925070,808,ffff80003c925110) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7707e0,ffff80003c9251c0,ffff80003c925110) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9251c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9251c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb844509f910, 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(0xffffffff83a748e8, 0xffff80000160602a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c924d20,0,ffff80003c924c90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff80003c924dc8,ffff80003c924d20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8075bef700,ffff800010fe1598) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1598,fffffd8075bef700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1598,0,ffff80003c924f78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7707e0,5,ffff80003c925070,808,ffff80003c925110) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7707e0,ffff80003c9251c0,ffff80003c925110) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9251c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9251c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb844509f910, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c924b70 rbx 0xde rdx 0 rcx 0xffff800001605f40 rax 0xfffffd807ec60ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x2f4069781a02c444 r11 0x4b1378e1dcb0bb78 r12 0x20 r13 0xfffffd807ec60c00 r14 0xfffffd8071098a30 r15 0xffff8000002a2058 rip 0xffffffff81b7b0d4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c924af0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=146032 pid=15277 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a771ca0,0xffffffff83a6b938 process=0xffff800035cda898 user=0xffff80003c920000, vmspace=0xfffffd806ca9b740 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15277 506496 99402 0 2 0 syz-executor 15277 339109 99402 0 2 0x4000000 syz-executor *15277 146032 99402 0 7 0x4000000 syz-executor 18792 344470 52469 0 3 0x80 fsleep syz-executor 18792 277830 52469 0 3 0x4000080 kqread syz-executor 52406 345105 84109 0 3 0x80 fsleep syz-executor 52406 233014 84109 0 3 0x4000080 ttyretype syz-executor 11050 503173 30509 0 3 0x80 fsleep syz-executor 11050 185687 30509 0 3 0x4000080 ttyin syz-executor 28650 519372 96670 0 3 0x80 fsleep syz-executor 28650 250507 96670 0 3 0x4000080 lockf syz-executor 17087 406090 32251 0 3 0x80 fsleep syz-executor 17087 418599 32251 0 3 0x4000080 pipewr syz-executor 19795 123952 71285 0 3 0x80 fsleep syz-executor 19795 228467 71285 0 3 0x4000080 piperd syz-executor 9974 510538 95230 0 3 0x80 fsleep syz-executor 9974 40464 95230 0 3 0x4000080 sbwait syz-executor 97982 83092 1 0 3 0x80 nanoslp init 3646 270221 0 0 3 0x14200 acct acct 95230 241394 26483 0 2 0xc82 syz-executor 71285 282359 26483 0 2 0xc82 syz-executor 96670 523123 26483 0 3 0x82 nanoslp syz-executor 32251 107766 26483 0 3 0x82 nanoslp syz-executor 84109 10029 26483 0 3 0x82 nanoslp syz-executor 52469 356092 26483 0 2 0xc82 syz-executor 30509 93447 26483 0 2 0xc82 syz-executor 99402 327543 26483 0 3 0x82 nanoslp syz-executor 26483 262502 1 0 3 0x82 kqread syz-executor 35280 524070 1 0 3 0x8a kqread sshd 88942 10962 91842 73 3 0x1100090 kqread syslogd 91842 81575 1 0 3 0x100082 sbwait syslogd 89735 138883 1 0 3 0x100080 kqread resolvd 50668 419666 62917 77 3 0x100092 kqread dhcpleased 51369 458764 62917 77 3 0x100092 kqread dhcpleased 62917 428184 1 0 3 0x80 kqread dhcpleased 61277 251500 0 0 3 0x14200 bored smr 39957 506661 0 0 2 0x14200 zerothread 85582 6904 0 0 3 0x14200 aiodoned aiodoned 45775 413615 0 0 3 0x14200 syncer update 90044 410129 0 0 3 0x14200 cleaner cleaner 79117 323547 0 0 3 0x14200 reaper reaper 39140 282144 0 0 3 0x14200 pgdaemon pagedaemon 18274 462394 0 0 3 0x14200 bored viomb 55211 518042 0 0 3 0x40014200 acpi0 acpi0 45421 392565 0 0 2 0x14200 softnet0 70573 42058 0 0 3 0x14200 smrbar systqmp 96897 254989 0 0 3 0x14200 syncxs systq 24686 40130 0 0 3 0x40014200 tmoslp softclock 5094 286810 0 0 3 0x40014200 idle0 1 206343 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 11043 12104K 12633K 166960K 12423 0 pcb 17 13K 13K 166960K 69 0 rtable 195 14K 14K 166960K 417 0 pf 31 13K 17K 166960K 55 0 ifaddr 35 5K 7K 166960K 53 0 ifgroup 50 2K 2K 166960K 67 0 sysctl 1 1K 9K 166960K 6 0 counters 33 17K 18K 166960K 39 0 ioctlops 0 0K 4K 166960K 65 0 iov 1 1K 16K 166960K 49 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1297 82K 82K 166960K 1526 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 13 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 81K 166960K 353 0 sigio 1 0K 0K 166960K 7 0 proc 51 50K 83K 166960K 548 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 57 0 in_multi 74 5K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 383 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 205 130K 164K 166960K 4768 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 33 66K 90K 166960K 1461 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 11 0K 2K 166960K 34 0 temp 42 9107K 9172K 166960K 4944 0 kqueue 14 20K 28K 166960K 57 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 vscsiccb 40 1 0 0 1 0 1 1 0 8 0 rtpcb 120 46 0 42 1 0 1 1 0 8 0 rtentry 136 120 0 41 4 0 4 4 0 8 0 unpcb 144 276 0 260 3 0 3 3 0 8 2 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 70 0 65 1 0 1 1 0 8 0 arp 96 19 0 5 1 0 1 1 0 8 0 inpcb 328 289 0 279 4 0 4 4 0 8 2 ip6q 72 4 0 0 1 0 1 1 0 8 0 ip6af 40 4 0 0 1 0 1 1 0 8 0 nd6 112 28 0 9 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 4 0 4 1 0 1 1 0 8 1 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 1 0 1 1 0 1 1 0 8 1 pftag 88 1 0 1 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 1360 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 474 0 105 30 0 30 30 0 8 3 art_table 40 476 0 105 5 0 5 5 0 8 0 art_node 32 119 0 40 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 72 11 0 4 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1938 0 477 92 0 92 92 0 8 0 ffsino 256 1938 0 477 92 0 92 92 0 8 0 nchpl 144 2443 0 744 64 0 64 64 0 8 0 vnodes 216 2123 0 0 118 0 118 118 0 8 0 namei 1024 7619 0 7618 2 0 2 2 0 8 1 kstatmem 264 35 0 12 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 8061 0 8060 8 0 8 8 1 8 7 plimitpl 152 46 0 32 1 0 1 1 0 8 0 sigapl 424 651 0 610 6 0 6 6 0 8 1 knotepl 120 10446 0 10402 16 6 10 16 0 8 8 kqueuepl 184 70 0 61 1 0 1 1 0 8 0 pipepl 304 137 0 108 3 0 3 3 0 8 0 fdescpl 448 637 0 610 4 0 4 4 0 8 0 filepl 120 2897 0 2675 9 0 9 9 0 8 2 lockfpl 104 139 0 134 2 0 2 2 0 8 1 lockfspl 48 37 0 33 1 0 1 1 0 8 0 sessionpl 144 31 0 25 1 0 1 1 0 8 0 pgrppl 48 41 0 27 1 0 1 1 0 8 0 ucredpl 104 291 0 281 1 0 1 1 0 8 0 zombiepl 144 610 0 610 1 0 1 1 0 8 1 processpl 1152 651 0 610 4 0 4 4 0 8 0 procpl 664 971 0 921 5 0 5 5 0 8 0 sockpl 552 614 0 584 7 0 7 7 0 8 4 mcl64k 65536 115 0 114 1 0 1 1 0 8 0 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 12 0 12 1 0 1 1 0 8 1 mcl4k 4096 2811 0 2755 14 0 14 14 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 347 0 343 2 0 2 2 0 8 1 mtagpl 96 12 0 8 1 0 1 1 0 8 0 mbufpl 256 6797 0 6662 11 0 11 11 0 8 0 bufpl 280 2562 0 102 176 0 176 176 0 8 0 anonpl 24 111580 0 108810 42 0 42 42 0 186 19 amapchunkpl 152 14653 0 14197 25 0 25 25 0 158 7 amappl16 200 2030 0 2003 14 4 10 14 0 8 7 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 408 0 408 1 0 1 1 0 8 1 amappl13 176 119 0 112 1 0 1 1 0 8 0 amappl12 168 873 0 848 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 0 1 1 0 8 1 amappl10 152 70 0 60 1 0 1 1 0 8 0 amappl9 144 268 0 268 1 0 1 1 0 8 1 amappl8 136 111 0 110 1 0 1 1 0 8 0 amappl7 128 144 0 133 1 0 1 1 0 8 0 amappl6 120 165 0 165 1 0 1 1 0 8 1 amappl5 112 93 0 88 1 0 1 1 0 8 0 amappl4 104 288 0 273 1 0 1 1 0 8 0 amappl3 96 2791 0 2685 3 0 3 3 0 8 0 amappl2 88 539 0 493 2 0 2 2 0 8 0 amappl1 80 11348 0 10988 13 0 13 13 0 8 2 amappl 88 4026 0 3874 4 0 4 4 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma2048 2048 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 4 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 7026 0 6991 2 0 2 2 0 8 0 vmmpepl 168 49330 0 47842 80 0 80 80 0 357 12 vmsppl 368 636 0 610 4 0 4 4 0 8 1 rwobjpl 40 16801 0 16018 11 0 11 11 0 8 0 pdppl 4096 1280 0 1220 88 28 60 74 0 8 0 pvpl 32 288198 0 280665 94 0 94 94 0 265 25 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 112 353 0 28 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c924d20,0,ffff80003c924c90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff80003c924dc8,ffff80003c924d20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8075bef700,ffff800010fe1598) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1598,fffffd8075bef700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1598,0,ffff80003c924f78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7707e0,5,ffff80003c925070,808,ffff80003c925110) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7707e0,ffff80003c9251c0,ffff80003c925110) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9251c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9251c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb844509f910, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8071098a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c924d20,0,ffff80003c924c90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff80003c924dc8,ffff80003c924d20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8075bef700,ffff800010fe1598) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1598,fffffd8075bef700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1598,0,ffff80003c924f78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7707e0,5,ffff80003c925070,808,ffff80003c925110) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7707e0,ffff80003c9251c0,ffff80003c925110) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9251c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9251c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb844509f910, count: -10 ddb>