uvm_fault(0xffffffff839d8080, 0xffff80000161004a, 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 *293419 74219 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906d40,0,ffff80003c906cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001608d00,ffff80003c906de8,ffff80003c906d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807108cd00,ffff8000015879e0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015879e0,fffffd807108cd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015879e0,0,ffff80003c906f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b0548,3,ffff80003c907090,808,ffff80003c907130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b0548,ffff80003c9071e0,ffff80003c907130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9071e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9071e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53cb1074460, 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(0xffffffff839d8080, 0xffff80000161004a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906d40,0,ffff80003c906cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001608d00,ffff80003c906de8,ffff80003c906d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807108cd00,ffff8000015879e0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015879e0,fffffd807108cd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015879e0,0,ffff80003c906f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b0548,3,ffff80003c907090,808,ffff80003c907130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b0548,ffff80003c9071e0,ffff80003c907130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9071e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9071e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53cb1074460, count: -10 ddb> show registers rdi 0xffff8000314b8000 rsi 0x940 rbp 0xffff80003c906b90 rbx 0xde rdx 0xffff8000314b8000 rcx 0xffff80000160ff60 rax 0xfffffd807108c3e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x58fae6ec29ade52 r11 0x4af94dd0f50c78ab r12 0x1a r13 0xfffffd807108c300 r14 0xfffffd806a7da920 r15 0xffff8000002a2058 rip 0xffffffff810f9534 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c906b10 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=293419 pid=74219 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=0xffff80002f0b0d10,0xffffffff8399cbe0 process=0xffff800033cc0d98 user=0xffff80003c902000, vmspace=0xfffffd806cac3b90 estcpu=6, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 74219 160903 71812 0 2 0 syz-executor *74219 293419 71812 0 7 0x4000000 syz-executor 79564 136208 32201 0 2 0 syz-executor 79564 240366 32201 0 3 0x4000080 fsleep syz-executor 68179 159416 89223 0 2 0 syz-executor 68179 364866 89223 0 3 0x4000080 fsleep syz-executor 34026 124058 82088 0 3 0x80 nanoslp syz-executor 34026 439961 82088 0 2 0x4000000 syz-executor 34937 1917 36293 0 2 0 syz-executor 34937 513409 36293 0 3 0x4000080 fsleep syz-executor 71090 80061 36977 0 3 0x80 nanoslp syz-executor 71090 278034 36977 0 3 0x4000080 kqread syz-executor 71090 494498 36977 0 3 0x4000080 fsleep syz-executor 36977 346703 59798 0 2 0xc82 syz-executor 89223 425592 59798 0 2 0xc82 syz-executor 24506 307801 59798 0 2 0x2 syz-executor 36293 333209 59798 0 2 0xc82 syz-executor 71812 341330 59798 0 2 0xc82 syz-executor 66726 38036 59798 0 2 0x2 syz-executor 32201 342041 59798 0 2 0xc82 syz-executor 82088 97889 59798 0 3 0x82 nanoslp syz-executor 59798 327191 9180 0 3 0x82 kqread syz-executor 9180 397003 41752 0 3 0x10008a sigsusp ksh 41752 434743 84258 0 3 0x98 kqread sshd-session 84258 305140 990 0 3 0x92 kqread sshd-session 27966 96827 1 0 3 0x100083 ttyin getty 990 94158 1 0 3 0x88 kqread sshd 44873 122571 22223 73 3 0x1100090 kqread syslogd 22223 177757 1 0 3 0x100082 sbwait syslogd 45482 156639 1 0 3 0x100080 kqread resolvd 70600 94833 57479 77 3 0x100092 kqread dhcpleased 24812 315422 57479 77 3 0x100092 kqread dhcpleased 57479 452900 1 0 3 0x80 kqread dhcpleased 12293 349296 0 0 3 0x14200 bored smr 8654 359925 0 0 2 0x14200 zerothread 79253 116954 0 0 3 0x14200 aiodoned aiodoned 75 235738 0 0 3 0x14200 syncer update 56384 43123 0 0 3 0x14200 cleaner cleaner 26898 434425 0 0 3 0x14200 reaper reaper 53845 314938 0 0 3 0x14200 pgdaemon pagedaemon 11671 497581 0 0 3 0x14200 bored viomb 76632 309324 0 0 3 0x40014200 acpi0 acpi0 45474 364818 0 0 3 0x14200 bored softnet0 48941 51285 0 0 3 0x14200 bored systqmp 17475 430002 0 0 3 0x14200 bored systq 32587 54404 0 0 3 0x40014200 tmoslp softclock 28966 4800 0 0 3 0x40014200 idle0 1 69488 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 11035 12121K 12184K 166960K 12127 0 pcb 17 12K 12K 166960K 19 0 rtable 246 8K 8K 166960K 372 0 pf 32 13K 13K 166960K 32 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 52 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 34 17K 17K 166960K 34 0 ioctlops 0 0K 2K 166960K 34 0 iov 0 0K 2K 166960K 34 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1368 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 145 0 proc 57 58K 83K 166960K 495 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 101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 31 148K 148K 166960K 31 0 exec 0 0K 1K 166960K 369 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 150K 159K 166960K 3013 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 92K 166960K 1255 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 36 9106K 9170K 166960K 3885 0 kqueue 15 24K 24K 166960K 28 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 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 41 0 26 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 14 0 9 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 69 0 61 2 0 2 2 0 8 0 nd6 112 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 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 256 452 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 semapl 72 1 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1583 0 121 92 0 92 92 0 8 0 ffsino 256 1583 0 121 92 0 92 92 0 8 0 nchpl 144 1785 0 88 64 0 64 64 0 8 0 vnodes 216 1670 0 0 93 0 93 93 0 8 0 namei 1024 5323 0 5322 2 0 2 2 0 8 1 kstatmem 264 25 0 0 2 0 2 2 0 8 0 scxspl 216 6063 0 6063 3 0 3 3 1 8 3 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 443 0 402 6 0 6 6 0 8 1 knotepl 120 2666 0 2617 2 0 2 2 0 8 0 kqueuepl 184 26 0 14 1 0 1 1 0 8 0 pipepl 304 123 0 96 3 0 3 3 0 8 0 fdescpl 448 430 0 402 5 0 5 5 0 8 1 filepl 120 1552 0 1340 9 0 9 9 0 8 1 lockfpl 104 13 0 10 1 0 1 1 0 8 0 lockfspl 48 8 0 5 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 83 0 72 1 0 1 1 0 8 0 zombiepl 144 402 0 402 1 0 1 1 0 8 1 processpl 1152 443 0 402 4 0 4 4 0 8 0 procpl 664 464 0 416 5 0 5 5 0 8 0 sockpl 552 149 0 122 3 0 3 3 0 8 1 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2498 0 2445 14 0 14 14 0 8 6 mcl2k 2048 120 0 119 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 5195 0 5058 12 0 12 12 0 8 3 bufpl 280 2237 0 102 153 0 153 153 0 8 0 anonpl 24 80461 0 77464 32 0 32 32 0 186 12 amapchunkpl 152 7993 0 7575 24 0 24 24 0 158 4 amappl16 200 1043 0 1023 4 0 4 4 0 8 2 amappl15 192 26 0 26 1 0 1 1 0 8 1 amappl14 184 409 0 408 1 0 1 1 0 8 0 amappl13 176 116 0 106 1 0 1 1 0 8 0 amappl12 168 671 0 644 2 0 2 2 0 8 0 amappl11 160 4 0 3 1 0 1 1 0 8 0 amappl10 152 56 0 46 1 0 1 1 0 8 0 amappl9 144 268 0 268 1 0 1 1 0 8 1 amappl8 136 91 0 90 1 0 1 1 0 8 0 amappl7 128 142 0 131 1 0 1 1 0 8 0 amappl6 120 150 0 149 1 0 1 1 0 8 0 amappl5 112 99 0 90 1 0 1 1 0 8 0 amappl4 104 262 0 246 1 0 1 1 0 8 0 amappl3 96 1432 0 1337 3 0 3 3 0 8 0 amappl2 88 524 0 474 2 0 2 2 0 8 0 amappl1 80 10193 0 9649 13 0 13 13 0 8 1 amappl 88 2313 0 2170 4 0 4 4 0 92 0 uvmvnodes 80 99 0 0 3 0 3 3 0 8 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 430 0 402 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 430 0 402 1 0 1 1 0 8 0 vmmpekpl 168 5482 0 5450 2 0 2 2 0 8 0 vmmpepl 168 36317 0 34629 79 0 79 79 0 357 0 vmsppl 368 429 0 402 4 0 4 4 0 8 1 rwobjpl 40 13534 0 12624 11 0 11 11 0 8 1 pdppl 4096 866 0 804 92 14 78 78 0 8 16 pvpl 32 203149 0 194576 96 0 96 96 0 265 19 pmappl 216 429 0 402 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 355 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906d40,0,ffff80003c906cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001608d00,ffff80003c906de8,ffff80003c906d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807108cd00,ffff8000015879e0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015879e0,fffffd807108cd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015879e0,0,ffff80003c906f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b0548,3,ffff80003c907090,808,ffff80003c907130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b0548,ffff80003c9071e0,ffff80003c907130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9071e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9071e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53cb1074460, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806a7da920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906d40,0,ffff80003c906cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001608d00,ffff80003c906de8,ffff80003c906d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807108cd00,ffff8000015879e0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015879e0,fffffd807108cd00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015879e0,0,ffff80003c906f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0b0548,3,ffff80003c907090,808,ffff80003c907130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0b0548,ffff80003c9071e0,ffff80003c907130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9071e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9071e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53cb1074460, count: -10