uvm_fault(0xffffffff8394fc20, 0xffff8000014ed0ca, 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 *515857 43337 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800036141190,0,ffff800036141100,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001500800,ffff800036141238,ffff800036141190,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f824000,ffff8000014811a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014811a8,fffffd806f824000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014811a8,0,ffff8000361413e8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d642c8,5,ffff8000361414e0,808,ffff800036141580) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d642c8,ffff800036141630,ffff800036141580) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800036141630) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800036141630) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe991843b580, 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(0xffffffff8394fc20, 0xffff8000014ed0ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800036141190,0,ffff800036141100,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001500800,ffff800036141238,ffff800036141190,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f824000,ffff8000014811a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014811a8,fffffd806f824000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014811a8,0,ffff8000361413e8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d642c8,5,ffff8000361414e0,808,ffff800036141580) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d642c8,ffff800036141630,ffff800036141580) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800036141630) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800036141630) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe991843b580, count: -10 ddb> show registers rdi 0xffff800031536000 rsi 0x5cb rbp 0xffff800036140fe0 rbx 0xde rdx 0xffff800031536000 rcx 0xffff8000014ecfe0 rax 0xfffffd806f8247e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x92c019233b9d6d53 r11 0xae6e9574e5260f6b r12 0x26 r13 0xfffffd806f824700 r14 0xfffffd806bb82b40 r15 0xffff800000039058 rip 0xffffffff826c4f57 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800036140f60 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=515857 pid=43337 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=56, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800038d64a90,0xffff800038d65268 process=0xffff8000ffffad18 user=0xffff80003613c000, vmspace=0xfffffd8067fee2f8 estcpu=6, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58958 371338 10312 0 2 0 syz-executor 58958 61352 10312 0 3 0x4000080 sbwait syz-executor 54881 483552 24894 0 2 0 syz-executor 54881 159370 24894 0 3 0x4000080 fsleep syz-executor 54881 139341 24894 0 3 0x4000080 fsleep syz-executor 94963 252020 77014 0 3 0x80 nanoslp syz-executor 94963 354554 77014 0 3 0x4000080 sbwait syz-executor 94963 249192 77014 0 3 0x4000080 fsleep syz-executor 43337 6374 72962 0 2 0 syz-executor *43337 515857 72962 0 7 0x4000000 syz-executor 82892 343096 62337 0 2 0 syz-executor 44741 37221 44667 0 4 0x82000 syz-executor 44741 308204 44667 0 2 0x4082000 syz-executor 44741 178443 44667 0 2 0x4082000 syz-executor 44741 153058 44667 0 4 0x4082000 syz-executor 44741 207759 44667 0 3 0x4002000 suspend syz-executor 90515 273933 54264 0 3 0x3000 suspend syz-executor 90515 410401 54264 0 2 0x4081000 syz-executor 64358 178162 0 0 3 0x14200 bored sosplice 24894 313433 97329 0 2 0xc82 syz-executor 62337 101908 97329 0 2 0xc82 syz-executor 43824 211193 97329 0 2 0x2 syz-executor 44667 144398 97329 0 3 0x82 nanoslp syz-executor 72962 321892 97329 0 3 0x82 nanoslp syz-executor 77014 293997 97329 0 2 0xc82 syz-executor 54264 497769 97329 0 2 0xc82 syz-executor 10312 69167 97329 0 2 0xc82 syz-executor 97329 419854 28384 0 3 0x82 kqread syz-executor 28384 273824 65875 0 3 0x10008a sigsusp ksh 65875 218423 96701 0 3 0x98 kqread sshd-session 96701 303852 86056 0 3 0x92 kqread sshd-session 46892 479924 1 0 3 0x100083 ttyopn getty 86056 460294 1 0 3 0x88 kqread sshd 78926 431366 35961 73 3 0x1100090 kqread syslogd 35961 399164 1 0 3 0x100082 sbwait syslogd 99453 3864 1 0 3 0x100080 kqread resolvd 90290 261359 72921 77 3 0x100092 kqread dhcpleased 99752 469268 72921 77 3 0x100092 kqread dhcpleased 72921 186882 1 0 3 0x80 kqread dhcpleased 66666 407331 0 0 3 0x14200 bored smr 24703 1398 0 0 2 0x14200 zerothread 77442 270986 0 0 3 0x14200 aiodoned aiodoned 95056 460401 0 0 3 0x14200 syncer update 83544 494686 0 0 3 0x14200 cleaner cleaner 67974 386223 0 0 3 0x14200 reaper reaper 79360 275693 0 0 3 0x14200 pgdaemon pagedaemon 25541 37727 0 0 3 0x14200 bored viomb 44087 162697 0 0 3 0x40014200 acpi0 acpi0 33980 132168 0 0 3 0x14200 bored softnet7 5741 147559 0 0 3 0x14200 bored softnet6 10707 196161 0 0 3 0x14200 bored softnet5 97563 487466 0 0 3 0x14200 bored softnet4 36076 19394 0 0 3 0x14200 bored softnet3 13749 296130 0 0 3 0x14200 bored softnet2 23976 338980 0 0 3 0x14200 bored softnet1 10834 294929 0 0 2 0x14200 softnet0 82492 135619 0 0 3 0x14200 bored systqmp 93778 162337 0 0 3 0x14200 bored systq 47942 363535 0 0 2 0x40014200 softclock 60753 19445 0 0 3 0x40014200 idle0 1 436655 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 10187 11063K 11304K 166960K 11779 0 pcb 17 14K 16K 166960K 156 0 rtable 220 7K 7K 166960K 349 0 pf 31 13K 20K 166960K 58 0 ifaddr 42 7K 7K 166960K 57 0 ifgroup 50 2K 2K 166960K 69 0 sysctl 4 1K 9K 166960K 9 0 counters 32 17K 17K 166960K 41 0 ioctlops 0 0K 4K 166960K 75 0 iov 0 0K 12K 166960K 50 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1434 90K 90K 166960K 1749 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 6K 10K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 53 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 476 0 sigio 0 0K 0K 166960K 12 0 proc 60 59K 124K 166960K 494 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 43 0 in_multi 99 7K 7K 166960K 121 0 ether_multi 1 0K 0K 166960K 5 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 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 363 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 220 151K 171K 166960K 5674 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 38 76K 96K 166960K 1498 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 25 0 NDP 11 0K 2K 166960K 34 0 temp 55 8638K 8892K 166960K 15447 0 kqueue 13 20K 31K 166960K 82 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 65 0 61 1 0 1 1 0 8 0 rtentry 136 115 0 24 4 0 4 4 0 8 0 unpcb 144 409 0 388 6 5 1 6 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 235 0 230 7 6 1 7 0 8 0 arp 88 13 0 2 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 0 1 0 1 1 0 8 0 inpcb 328 485 0 476 12 11 1 12 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 104 21 0 1 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 7 0 7 1 1 0 1 0 8 0 pppxif 1384 1 0 1 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pfstkey 128 11 0 11 1 1 0 1 0 8 0 pfstate 384 6 0 6 1 1 0 1 0 8 0 pfrule 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 530 0 125 30 2 28 30 0 8 0 art_table 40 534 0 125 5 0 5 5 0 8 0 art_node 32 115 0 36 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semapl 112 51 0 41 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2272 0 778 95 0 95 95 0 8 0 ffsino 256 2272 0 778 95 0 95 95 0 8 0 nchpl 144 2953 0 1276 63 0 63 63 0 8 0 uvmvnodes 80 2568 0 0 53 0 53 53 0 8 0 vnodes 216 2568 0 0 143 0 143 143 0 8 0 namei 1024 9812 0 9812 2 1 1 2 0 8 1 kstatmem 264 36 0 14 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 12531 0 12531 8 7 1 8 1 8 1 plimitpl 152 154 0 138 1 0 1 1 0 8 0 sigapl 424 778 0 728 8 2 6 8 0 8 0 knotepl 120 18512 0 18465 15 12 3 15 0 8 0 kqueuepl 184 259 0 248 4 3 1 4 0 8 0 pipepl 304 134 0 105 3 0 3 3 0 8 0 fdescpl 448 737 0 708 5 1 4 5 0 8 0 filepl 120 4261 0 4035 14 6 8 14 0 8 0 lockfpl 104 340 0 337 2 1 1 2 0 8 0 lockfspl 48 135 0 132 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 104 794 0 783 1 0 1 1 0 8 0 zombiepl 144 729 0 728 1 0 1 1 0 8 0 processpl 1152 778 0 728 6 2 4 6 0 8 0 procpl 664 1299 0 1238 7 1 6 7 0 8 0 sockpl 552 976 0 942 14 11 3 12 0 8 0 mcl64k 65536 115 0 115 2 1 1 1 0 8 1 mcl8k 8192 14 0 13 1 0 1 1 0 8 0 mcl4k 4096 2940 0 2885 15 8 7 15 0 8 0 mcl2k 2048 729 0 727 1 0 1 1 0 8 0 mtagpl 96 9 0 6 1 0 1 1 0 8 0 mbufpl 256 8907 0 8777 18 7 11 18 0 8 0 bufpl 280 5568 0 120 390 0 390 390 0 8 0 anonpl 24 138899 0 135730 45 19 26 45 0 187 0 amapchunkpl 152 18929 0 18463 37 18 19 36 0 158 0 amappl16 200 2993 0 2962 20 17 3 15 0 8 1 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1364 0 1336 3 1 2 3 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 73 0 72 1 0 1 1 0 8 0 amappl7 128 96 0 86 1 0 1 1 0 8 0 amappl6 120 184 0 180 1 0 1 1 0 8 0 amappl5 112 117 0 110 1 0 1 1 0 8 0 amappl4 104 281 0 266 1 0 1 1 0 8 0 amappl3 96 3413 0 3309 4 1 3 4 0 8 0 amappl2 88 607 0 552 2 0 2 2 0 8 0 amappl1 80 9337 0 8788 13 1 12 13 0 8 0 amappl 88 4975 0 4818 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 9 0 9 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 737 0 708 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 737 0 708 1 0 1 1 0 8 0 vmmpekpl 168 7021 0 6990 2 0 2 2 0 8 0 vmmpepl 168 52603 0 50751 96 12 84 95 0 357 0 vmsppl 368 736 0 708 4 1 3 4 0 8 0 rwobjpl 40 18980 0 15558 35 0 35 35 0 8 0 pdppl 4096 1481 0 1416 103 36 67 83 0 8 2 pvpl 32 337827 0 328257 115 29 86 115 0 265 0 pmappl 216 736 0 708 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 391 0 68 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800036141190,0,ffff800036141100,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001500800,ffff800036141238,ffff800036141190,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f824000,ffff8000014811a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014811a8,fffffd806f824000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014811a8,0,ffff8000361413e8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d642c8,5,ffff8000361414e0,808,ffff800036141580) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d642c8,ffff800036141630,ffff800036141580) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800036141630) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800036141630) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe991843b580, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bb82b40) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800036141190,0,ffff800036141100,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001500800,ffff800036141238,ffff800036141190,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806f824000,ffff8000014811a8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014811a8,fffffd806f824000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014811a8,0,ffff8000361413e8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038d642c8,5,ffff8000361414e0,808,ffff800036141580) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800038d642c8,ffff800036141630,ffff800036141580) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800036141630) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800036141630) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe991843b580, count: -10