uvm_fault(0xffffffff83978050, 0xffff80000160402a, 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 *276027 27364 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314d3280,0,ffff8000314d31f0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001616c00,ffff8000314d3328,ffff8000314d3280,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807299f500,ffff8000015f6f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f6f28,fffffd807299f500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f6f28,0,ffff8000314d34d8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800035ce1ca8,4,ffff8000314d35d0,808,ffff8000314d3670) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800035ce1ca8,ffff8000314d3720,ffff8000314d3670) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314d3720) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314d3720) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x92bb3770210, 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(0xffffffff83978050, 0xffff80000160402a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314d3280,0,ffff8000314d31f0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001616c00,ffff8000314d3328,ffff8000314d3280,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807299f500,ffff8000015f6f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f6f28,fffffd807299f500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f6f28,0,ffff8000314d34d8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800035ce1ca8,4,ffff8000314d35d0,808,ffff8000314d3670) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800035ce1ca8,ffff8000314d3720,ffff8000314d3670) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314d3720) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314d3720) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x92bb3770210, count: -10 ddb> show registers rdi 0xffff80002a8b6000 rsi 0x941 rbp 0xffff8000314d30d0 rbx 0xde rdx 0xffff80002a8b6000 rcx 0xffff800001603f40 rax 0xfffffd807299fde0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xce3f0e949bbf9a38 r11 0x5705195522d5e880 r12 0x1c r13 0xfffffd807299fd00 r14 0xfffffd80723069a8 r15 0xffff8000002a2058 rip 0xffffffff818ed5f4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000314d3050 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=276027 pid=27364 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=0xffff800035ce0a80,0xffffffff83941e68 process=0xffff8000ffff9f98 user=0xffff8000314ce000, vmspace=0xfffffd807a7add08 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 27364 127388 90033 0 2 0 syz-executor *27364 276027 90033 0 7 0x4000000 syz-executor 94174 522137 34812 0 2 0 syz-executor 94174 191100 34812 0 3 0x4000080 sbwait syz-executor 70774 476876 50071 0 2 0 syz-executor 70774 373757 50071 0 3 0x4000080 fsleep syz-executor 10861 369597 17870 0 2 0 syz-executor 10861 334990 17870 0 3 0x4000080 fsleep syz-executor 67125 394672 8954 0 3 0x80 nanoslp syz-executor 67125 154928 8954 0 3 0x4000080 fsleep syz-executor 67125 522952 8954 0 3 0x4000080 fsleep syz-executor 67125 298040 8954 0 3 0x4000080 kqpoll syz-executor 67125 260096 8954 0 3 0x4000080 fsleep syz-executor 34812 111769 11767 0 3 0x82 nanoslp syz-executor 8954 521275 11767 0 2 0xc82 syz-executor 64603 329071 11767 0 2 0x2 syz-executor 21132 352657 11767 0 2 0x2 syz-executor 17870 440389 11767 0 2 0xc82 syz-executor 48211 412166 11767 0 3 0x82 nanoslp syz-executor 50071 356431 11767 0 3 0x82 nanoslp syz-executor 90033 419017 11767 0 3 0x82 nanoslp syz-executor 11767 272311 37176 0 3 0x82 kqread syz-executor 37176 502869 85220 0 3 0x10008a sigsusp ksh 85220 292667 27474 0 3 0x98 kqread sshd-session 27474 102760 92306 0 3 0x92 kqread sshd-session 76584 415374 1 0 3 0x100083 ttyin getty 92306 318768 1 0 3 0x88 kqread sshd 53170 278006 32937 73 3 0x1100090 kqread syslogd 32937 381503 1 0 3 0x100082 sbwait syslogd 35524 229031 1 0 3 0x100080 kqread resolvd 75555 386798 91823 77 3 0x100092 kqread dhcpleased 5464 355271 91823 77 3 0x100092 kqread dhcpleased 91823 450422 1 0 3 0x80 kqread dhcpleased 77281 156692 0 0 3 0x14200 bored smr 56492 321865 0 0 2 0x14200 zerothread 34306 263381 0 0 3 0x14200 aiodoned aiodoned 24152 178634 0 0 3 0x14200 syncer update 20277 248151 0 0 3 0x14200 cleaner cleaner 12793 508656 0 0 3 0x14200 reaper reaper 32751 323214 0 0 3 0x14200 pgdaemon pagedaemon 64332 484060 0 0 3 0x14200 bored viomb 77473 324601 0 0 3 0x40014200 acpi0 acpi0 76635 346416 0 0 3 0x14200 bored softnet0 70023 165860 0 0 3 0x14200 bored systqmp 26452 221728 0 0 3 0x14200 bored systq 44120 326766 0 0 3 0x40014200 tmoslp softclock 40650 67438 0 0 3 0x40014200 idle0 1 204191 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 11033 12105K 12236K 166960K 12170 0 pcb 17 12K 12K 166960K 28 0 rtable 248 8K 8K 166960K 372 0 pf 33 13K 19K 166960K 43 0 ifaddr 43 7K 7K 166960K 47 0 ifgroup 55 2K 2K 166960K 61 0 sysctl 3 1K 9K 166960K 7 0 counters 34 17K 18K 166960K 36 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 8K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1291 81K 82K 166960K 1373 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 172 0 proc 59 59K 91K 166960K 505 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 10 0 in_multi 99 7K 7K 166960K 102 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 43 201K 201K 166960K 43 0 exec 0 0K 1K 166960K 361 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 216 160K 160K 166960K 3183 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 92K 166960K 1253 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 28 2K 2K 166960K 30 0 temp 75 9072K 9136K 166960K 3973 0 kqueue 13 20K 22K 166960K 26 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 41 0 36 1 0 1 1 0 8 0 rtentry 136 113 0 1 4 0 4 4 0 8 0 unpcb 144 48 0 27 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 17 0 13 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 86 0 79 2 0 2 2 0 8 1 nd6 112 25 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 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 454 0 0 29 0 29 29 0 8 0 art_table 40 456 0 0 5 0 5 5 0 8 0 art_node 32 113 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1619 0 158 92 0 92 92 0 8 0 ffsino 256 1619 0 158 92 0 92 92 0 8 0 nchpl 144 1862 0 174 64 0 64 64 0 8 0 vnodes 216 1709 0 0 95 0 95 95 0 8 0 namei 1024 5604 0 5603 1 0 1 1 0 8 0 kstatmem 264 28 0 4 2 0 2 2 0 8 0 scxspl 216 6090 0 6090 4 0 4 4 1 8 4 plimitpl 152 32 0 15 1 0 1 1 0 8 0 sigapl 424 462 0 421 6 0 6 6 0 8 1 knotepl 120 3813 0 3766 9 0 9 9 0 8 7 kqueuepl 184 25 0 15 1 0 1 1 0 8 0 pipepl 304 119 0 92 3 0 3 3 0 8 0 fdescpl 448 449 0 421 5 0 5 5 0 8 1 filepl 120 1657 0 1440 7 0 7 7 0 8 0 lockfpl 104 18 0 15 1 0 1 1 0 8 0 lockfspl 48 9 0 6 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 94 0 83 1 0 1 1 0 8 0 zombiepl 144 422 0 421 1 0 1 1 0 8 0 processpl 1152 462 0 421 4 0 4 4 0 8 0 procpl 664 523 0 474 5 0 5 5 0 8 0 sockpl 552 177 0 144 3 0 3 3 0 8 0 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2527 0 2475 16 1 15 16 0 8 8 mcl2k 2048 132 0 125 2 0 2 2 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4495 0 4336 14 0 14 14 0 8 3 bufpl 280 2271 0 102 155 0 155 155 0 8 0 anonpl 24 95406 0 90284 38 0 38 38 0 187 5 amapchunkpl 152 9145 0 8573 28 0 28 28 0 158 2 amappl16 200 1531 0 1504 5 0 5 5 0 8 3 amappl15 192 12 0 12 1 0 1 1 0 8 1 amappl14 184 405 0 404 1 0 1 1 0 8 0 amappl13 176 111 0 101 1 0 1 1 0 8 0 amappl12 168 688 0 660 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 81 0 71 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 0 1 1 0 8 1 amappl8 136 110 0 109 1 0 1 1 0 8 0 amappl7 128 170 0 159 1 0 1 1 0 8 0 amappl6 120 151 0 149 1 0 1 1 0 8 0 amappl5 112 116 0 109 1 0 1 1 0 8 0 amappl4 104 291 0 277 1 0 1 1 0 8 0 amappl3 96 1628 0 1526 3 0 3 3 0 8 0 amappl2 88 495 0 442 2 0 2 2 0 8 0 amappl1 80 9183 0 8633 13 0 13 13 0 8 0 amappl 88 2502 0 2350 4 0 4 4 0 92 0 uvmvnodes 80 96 0 0 2 0 2 2 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 24 449 0 421 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 449 0 421 1 0 1 1 0 8 0 vmmpekpl 168 5235 0 5203 2 0 2 2 0 8 0 vmmpepl 168 36604 0 34879 82 0 82 82 0 357 2 vmsppl 368 448 0 421 4 0 4 4 0 8 1 rwobjpl 40 13244 0 12310 11 0 11 11 0 8 1 pdppl 4096 904 0 842 92 14 78 78 0 8 16 pvpl 32 221398 0 209587 105 0 105 105 0 265 8 pmappl 216 448 0 421 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 360 0 15 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314d3280,0,ffff8000314d31f0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001616c00,ffff8000314d3328,ffff8000314d3280,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807299f500,ffff8000015f6f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f6f28,fffffd807299f500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f6f28,0,ffff8000314d34d8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800035ce1ca8,4,ffff8000314d35d0,808,ffff8000314d3670) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800035ce1ca8,ffff8000314d3720,ffff8000314d3670) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314d3720) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314d3720) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x92bb3770210, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80723069a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314d3280,0,ffff8000314d31f0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001616c00,ffff8000314d3328,ffff8000314d3280,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807299f500,ffff8000015f6f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f6f28,fffffd807299f500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f6f28,0,ffff8000314d34d8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800035ce1ca8,4,ffff8000314d35d0,808,ffff8000314d3670) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800035ce1ca8,ffff8000314d3720,ffff8000314d3670) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314d3720) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314d3720) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x92bb3770210, count: -10