uvm_fault(0xffffffff83882410, 0xffff80000148d00a, 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 *197393 21458 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a5558d0,0,ffff80003a555840,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000150be00,ffff80003a555978,ffff80003a5558d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8069867700,ffff800010fda470) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fda470,fffffd8069867700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fda470,0,ffff80003a555b28,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f54e0,3,ffff80003a555c20,808,ffff80003a555cc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f54e0,ffff80003a555d70,ffff80003a555cc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a555d70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a555d70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x369558b19e0, 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(0xffffffff83882410, 0xffff80000148d00a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a5558d0,0,ffff80003a555840,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000150be00,ffff80003a555978,ffff80003a5558d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8069867700,ffff800010fda470) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fda470,fffffd8069867700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fda470,0,ffff80003a555b28,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f54e0,3,ffff80003a555c20,808,ffff80003a555cc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f54e0,ffff80003a555d70,ffff80003a555cc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a555d70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a555d70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x369558b19e0, count: -10 ddb> show registers rdi 0xffff80003a55c000 rsi 0x638 rbp 0xffff80003a555720 rbx 0xde rdx 0xffff80003a55c000 rcx 0xffff80000148cf20 rax 0xfffffd80698676e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x40f134a7f1b2d354 r11 0x28e2c8357b2751b1 r12 0x29 r13 0xfffffd8069867600 r14 0xfffffd806b4a2018 r15 0xffff800000039058 rip 0xffffffff82a01dd7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a5556a0 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=197393 pid=21458 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=0xffff80002a7f4d18,0xffff80002a7f4560 process=0xffff80003c980da0 user=0xffff80003a550000, vmspace=0xfffffd806bb88468 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 39246 235174 61143 0 2 0 syz-executor 39246 464534 61143 0 3 0x4000080 fsleep syz-executor 21458 434864 49722 0 2 0 syz-executor *21458 197393 49722 0 7 0x4000000 syz-executor 83045 340595 49681 0 2 0 syz-executor 83045 53220 49681 0 3 0x4000080 fsleep syz-executor 3827 317564 88865 0 2 0 syz-executor 3827 358874 88865 0 3 0x4000080 fsleep syz-executor 20573 37167 40683 0 2 0 syz-executor 9183 271698 0 0 3 0x14200 acct acct 27943 335473 0 0 3 0x14200 bored sosplice 49722 321718 44216 0 2 0xc82 syz-executor 80697 421110 44216 0 2 0x2 syz-executor 61143 71212 44216 0 3 0x82 nanoslp syz-executor 88865 83882 44216 0 3 0x82 nanoslp syz-executor 59369 57943 44216 0 2 0xc82 syz-executor 40683 366086 44216 0 2 0xc82 syz-executor 49681 368379 44216 0 2 0xc82 syz-executor 31399 426905 44216 0 3 0x82 wait syz-executor 44216 70265 81701 0 2 0x2 syz-executor 81701 240998 33319 0 3 0x10008a sigsusp ksh 33319 128108 88149 0 3 0x98 kqread sshd-session 88149 307106 54109 0 3 0x92 kqread sshd-session 49339 322249 1 0 3 0x100083 ttyin getty 54109 365476 1 0 3 0x88 kqread sshd 29459 505805 61917 73 3 0x1100090 kqread syslogd 61917 212725 1 0 3 0x100082 sbwait syslogd 42731 52105 1 0 3 0x100080 kqread resolvd 55863 516442 51378 77 3 0x100092 kqread dhcpleased 67316 368799 51378 77 3 0x100092 kqread dhcpleased 51378 312882 1 0 3 0x80 kqread dhcpleased 58284 360365 0 0 3 0x14200 bored smr 53281 208220 0 0 2 0x14200 zerothread 80122 248530 0 0 3 0x14200 aiodoned aiodoned 35620 120471 0 0 3 0x14200 syncer update 36033 301822 0 0 3 0x14200 cleaner cleaner 69843 464575 0 0 3 0x14200 reaper reaper 20293 76271 0 0 3 0x14200 pgdaemon pagedaemon 69338 216247 0 0 3 0x14200 bored viomb 25180 96813 0 0 3 0x40014200 acpi0 acpi0 66195 179830 0 0 3 0x14200 bored softnet7 22407 320314 0 0 3 0x14200 bored softnet6 30983 43076 0 0 3 0x14200 bored softnet5 21406 279653 0 0 3 0x14200 bored softnet4 74842 433484 0 0 3 0x14200 bored softnet3 56805 293459 0 0 3 0x14200 bored softnet2 28871 200649 0 0 3 0x14200 bored softnet1 56469 355903 0 0 2 0x14200 softnet0 37128 254669 0 0 3 0x14200 bored systqmp 46995 213463 0 0 3 0x14200 bored systq 27758 200392 0 0 2 0x40014200 softclock 84827 382554 0 0 3 0x40014200 idle0 1 454402 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10184 11040K 11370K 166960K 11804 0 pcb 17 12K 12K 166960K 78 0 rtable 224 8K 8K 166960K 352 0 pf 31 13K 17K 166960K 63 0 ifaddr 43 7K 8K 166960K 60 0 ifgroup 50 2K 2K 166960K 84 0 sysctl 3 1K 9K 166960K 7 0 counters 32 17K 18K 166960K 46 0 ioctlops 0 0K 4K 166960K 139 0 iov 0 0K 36K 166960K 23 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 85K 166960K 1586 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 2K 166960K 21 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 464 0 sigio 0 0K 0K 166960K 6 0 proc 60 59K 83K 166960K 513 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 36 0 in_multi 103 7K 7K 166960K 114 0 ether_multi 1 0K 0K 166960K 3 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 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 381 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 214 143K 158K 166960K 5365 0 UVM aobj 47 2K 4K 166960K 49 0 pinsyscall 38 76K 94K 166960K 1473 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 20 0 NDP 11 0K 2K 166960K 37 0 temp 76 8644K 8712K 166960K 26483 0 kqueue 14 22K 29K 166960K 87 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 94 0 89 2 1 1 2 0 8 0 rtentry 136 112 0 20 4 0 4 4 0 8 0 unpcb 144 294 0 275 4 3 1 4 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 192 0 187 7 6 1 7 0 8 0 arp 88 12 0 1 1 0 1 1 0 8 0 inpcb 328 434 0 425 8 6 2 7 0 8 1 ip6q 72 5 0 2 1 0 1 1 0 8 0 ip6af 40 8 0 4 1 0 1 1 0 8 0 nd6 104 19 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 9 0 9 1 1 0 1 0 8 0 pppxif 1384 2 0 2 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 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 1344 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 513 0 64 29 0 29 29 0 8 0 art_table 40 517 0 64 5 0 5 5 0 8 0 art_node 32 111 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 46 0 2 2 0 2 2 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2156 0 659 95 0 95 95 0 8 0 ffsino 256 2156 0 659 95 0 95 95 0 8 0 nchpl 144 2789 0 1109 63 0 63 63 0 8 0 uvmvnodes 80 2358 0 0 49 0 49 49 0 8 0 vnodes 216 2358 0 0 131 0 131 131 0 8 0 namei 1024 9407 0 9407 3 2 1 2 0 8 1 kstatmem 264 42 0 20 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 11436 0 11436 15 7 8 8 1 8 8 plimitpl 152 145 0 128 1 0 1 1 0 8 0 sigapl 424 735 0 684 7 1 6 7 0 8 0 knotepl 120 293393 0 293344 16 7 9 10 0 8 7 kqueuepl 184 127 0 116 1 0 1 1 0 8 0 pipepl 304 165 0 138 5 2 3 5 0 8 0 fdescpl 448 712 0 683 5 1 4 5 0 8 0 filepl 120 4113 0 3892 14 5 9 13 0 8 0 lockfpl 104 355 0 353 2 1 1 2 0 8 0 lockfspl 48 67 0 65 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 36 0 20 1 0 1 1 0 8 0 ucredpl 104 744 0 733 1 0 1 1 0 8 0 zombiepl 144 686 0 684 1 0 1 1 0 8 0 processpl 1152 735 0 684 5 1 4 5 0 8 0 procpl 664 1243 0 1188 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 552 837 0 804 8 5 3 8 0 8 0 mcl64k 65536 22 0 21 1 0 1 1 0 8 0 mcl9k 9216 2 0 2 2 1 1 1 0 8 1 mcl8k 8192 8 0 8 1 1 0 1 0 8 0 mcl4k 4096 2874 0 2818 15 7 8 15 0 8 1 mcl2k 2048 717 0 689 5 1 4 4 0 8 0 mtagpl 96 10 0 5 1 0 1 1 0 8 0 mbufpl 256 7316 0 7066 23 6 17 18 0 8 1 bufpl 280 5635 0 118 395 0 395 395 0 8 0 anonpl 24 153820 0 145651 86 11 75 75 0 187 0 amapchunkpl 152 18456 0 17934 37 3 34 34 0 158 11 amappl16 200 3216 0 2954 38 12 26 26 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 1317 0 1288 2 0 2 2 0 8 0 amappl11 160 49 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 96 0 86 1 0 1 1 0 8 0 amappl6 120 174 0 170 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 262 0 245 1 0 1 1 0 8 0 amappl3 96 3243 0 3144 4 1 3 4 0 8 0 amappl2 88 614 0 557 2 0 2 2 0 8 0 amappl1 80 9109 0 8563 13 1 12 13 0 8 0 amappl 88 4689 0 4537 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 48 0 2 1 0 1 1 0 8 0 uaddrrnd 24 712 0 683 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 712 0 683 1 0 1 1 0 8 0 vmmpekpl 168 7072 0 7041 2 0 2 2 0 8 0 vmmpepl 168 50880 0 48809 110 6 104 104 0 357 1 vmsppl 368 711 0 683 4 1 3 4 0 8 0 rwobjpl 40 18709 0 15239 39 1 38 38 0 8 0 pdppl 4096 1430 0 1366 96 30 66 80 0 8 2 pvpl 32 354057 0 340483 166 10 156 156 0 265 11 pmappl 216 711 0 683 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 393 0 60 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a5558d0,0,ffff80003a555840,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000150be00,ffff80003a555978,ffff80003a5558d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8069867700,ffff800010fda470) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fda470,fffffd8069867700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fda470,0,ffff80003a555b28,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f54e0,3,ffff80003a555c20,808,ffff80003a555cc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f54e0,ffff80003a555d70,ffff80003a555cc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a555d70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a555d70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x369558b19e0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4a2018) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003a5558d0,0,ffff80003a555840,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000150be00,ffff80003a555978,ffff80003a5558d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8069867700,ffff800010fda470) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fda470,fffffd8069867700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fda470,0,ffff80003a555b28,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f54e0,3,ffff80003a555c20,808,ffff80003a555cc0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f54e0,ffff80003a555d70,ffff80003a555cc0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a555d70) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a555d70) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x369558b19e0, count: -10