uvm_fault(0xffffffff83900140, 0xffff80000148e06a, 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 *290079 9724 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003b960b90,0,ffff80003b960b00,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148ba00,ffff80003b960c38,ffff80003b960b90,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8078b45000,ffff8000014057b8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014057b8,fffffd8078b45000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014057b8,0,ffff80003b960de8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f87e8,3,ffff80003b960ee0,808,ffff80003b960f80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:782 sys_sendto(ffff80002a7f87e8,ffff80003b961030,ffff80003b960f80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:560 syscall(ffff80003b961030) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b961030) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9dfebfef870, 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(0xffffffff83900140, 0xffff80000148e06a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003b960b90,0,ffff80003b960b00,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148ba00,ffff80003b960c38,ffff80003b960b90,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8078b45000,ffff8000014057b8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014057b8,fffffd8078b45000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014057b8,0,ffff80003b960de8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f87e8,3,ffff80003b960ee0,808,ffff80003b960f80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:782 sys_sendto(ffff80002a7f87e8,ffff80003b961030,ffff80003b960f80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:560 syscall(ffff80003b961030) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b961030) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9dfebfef870, count: -10 ddb> show registers rdi 0xffff80002cd32000 rsi 0x95f rbp 0xffff80003b9609e0 rbx 0xde rdx 0xffff80002cd32000 rcx 0xffff80000148df80 rax 0xfffffd8078b45de0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x2191fb2f75158d57 r11 0xcf14eba139c81be9 r12 0x1f r13 0xfffffd8078b45d00 r14 0xfffffd80698ab898 r15 0xffff800000039058 rip 0xffffffff823a7ec7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003b960960 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=290079 pid=9724 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=0xffff80002a7f9ca8,0xffffffff8388e0c0 process=0xffff80002cd30928 user=0xffff80003b95c000, vmspace=0xfffffd806cdf8e78 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 9724 304412 40350 0 2 0 syz-executor * 9724 290079 40350 0 7 0x4000000 syz-executor 36567 11861 25207 0 2 0 syz-executor 36567 364189 25207 0 3 0x4000080 fsleep syz-executor 96851 352464 41786 0 2 0 syz-executor 96851 283326 41786 0 3 0x4000080 fsleep syz-executor 10047 120483 4976 0 2 0 syz-executor 10047 137522 4976 0 3 0x4000080 fsleep syz-executor 54148 390722 80337 0 2 0 syz-executor 54148 239160 80337 0 3 0x4000080 fsleep syz-executor 3025 119954 47994 0 2 0xc80 syz-executor 3025 334806 47994 0 3 0x4000080 rest syz-executor 14525 299763 47039 0 2 0 syz-executor 14525 485930 47039 0 3 0x4000080 fsleep syz-executor 47039 125695 75276 0 2 0xc82 syz-executor 21495 332320 75276 0 2 0x2 syz-executor 4976 80699 75276 0 2 0xc82 syz-executor 80337 69353 75276 0 2 0xc82 syz-executor 47994 245866 75276 0 2 0xc82 syz-executor 41786 230887 75276 0 3 0x82 nanoslp syz-executor 40350 516791 75276 0 3 0x82 nanoslp syz-executor 25207 322122 75276 0 2 0xc82 syz-executor 75276 224688 9492 0 3 0x82 kqread syz-executor 9492 167176 82992 0 3 0x10008a sigsusp ksh 82992 360952 82184 0 3 0x98 kqread sshd-session 82184 326067 45982 0 3 0x92 kqread sshd-session 64065 299151 1 0 3 0x100083 ttyin getty 45982 472632 1 0 3 0x88 kqread sshd 5916 485390 7722 73 3 0x1100090 kqread syslogd 7722 19272 1 0 3 0x100082 sbwait syslogd 97288 284482 1 0 3 0x100080 kqread resolvd 68485 381262 48695 77 3 0x100092 kqread dhcpleased 92182 289528 48695 77 3 0x100092 kqread dhcpleased 48695 364806 1 0 3 0x80 kqread dhcpleased 65100 39379 0 0 3 0x14200 bored smr 32581 229191 0 0 2 0x14200 zerothread 66086 30456 0 0 3 0x14200 aiodoned aiodoned 27402 514242 0 0 3 0x14200 syncer update 74207 394750 0 0 3 0x14200 cleaner cleaner 32975 162435 0 0 3 0x14200 reaper reaper 12406 84915 0 0 3 0x14200 pgdaemon pagedaemon 57220 216432 0 0 3 0x14200 bored viomb 61038 66566 0 0 3 0x40014200 acpi0 acpi0 42331 420322 0 0 3 0x14200 bored softnet7 25950 368813 0 0 3 0x14200 bored softnet6 67079 389164 0 0 3 0x14200 bored softnet5 23768 277962 0 0 3 0x14200 bored softnet4 34092 426661 0 0 3 0x14200 bored softnet3 47241 109930 0 0 3 0x14200 bored softnet2 50894 93030 0 0 3 0x14200 bored softnet1 45627 137166 0 0 3 0x14200 bored softnet0 73551 105701 0 0 3 0x14200 smrbar systqmp 36670 121880 0 0 3 0x14200 bored systq 26145 104681 0 0 3 0x40014200 tmoslp softclock 41158 316964 0 0 3 0x40014200 idle0 1 60622 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 10171 11041K 11053K 166960K 11251 0 pcb 17 12K 12K 166960K 19 0 rtable 220 7K 7K 166960K 294 0 pf 30 12K 14K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 4K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1357 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 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 186 0 proc 58 59K 91K 166960K 473 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 4 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 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 345 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 217 159K 167K 166960K 3146 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 38 76K 91K 166960K 1211 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 27 2K 2K 166960K 27 0 temp 34 8630K 8694K 166960K 3820 0 kqueue 13 20K 22K 166960K 22 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 45 0 41 1 0 1 1 0 8 0 rtentry 136 97 0 2 4 0 4 4 0 8 0 unpcb 144 33 0 17 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 11 0 7 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 67 0 59 1 0 1 1 0 8 0 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 104 16 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 436 0 0 28 0 28 28 0 8 0 art_table 40 438 0 0 5 0 5 5 0 8 0 art_node 32 96 0 10 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1602 0 100 95 0 95 95 0 8 0 ffsino 256 1602 0 100 95 0 95 95 0 8 0 nchpl 144 1837 0 162 63 0 63 63 0 8 0 uvmvnodes 80 1686 0 0 35 0 35 35 0 8 0 vnodes 216 1686 0 0 94 0 94 94 0 8 0 namei 1024 5272 0 5271 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6431 0 6431 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 468 0 419 7 0 7 7 0 8 1 knotepl 120 4242 0 4195 2 0 2 2 0 8 0 kqueuepl 184 19 0 10 1 0 1 1 0 8 0 pipepl 304 99 0 72 3 0 3 3 0 8 0 fdescpl 448 448 0 419 4 0 4 4 0 8 0 filepl 120 1360 0 1150 7 0 7 7 0 8 0 lockfpl 104 13 0 11 1 0 1 1 0 8 0 lockfspl 48 7 0 5 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 72 0 61 1 0 1 1 0 8 0 zombiepl 144 419 0 419 1 0 1 1 0 8 1 processpl 1168 468 0 419 4 0 4 4 0 8 0 procpl 664 524 0 468 5 0 5 5 0 8 0 sockpl 552 145 0 117 3 0 3 3 0 8 1 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl16k 16384 6 0 6 1 0 1 1 0 8 1 mcl12k 12288 7 0 7 1 0 1 1 0 8 1 mcl9k 9216 5 0 5 1 0 1 1 0 8 1 mcl8k 8192 32 0 32 1 0 1 1 0 8 1 mcl4k 4096 2453 0 2400 15 0 15 15 0 8 8 mcl2k 2048 153 0 152 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4124 0 3993 9 0 9 9 0 8 0 bufpl 280 2863 0 117 197 0 197 197 0 8 0 anonpl 24 93998 0 91094 23 0 23 23 0 187 5 amapchunkpl 152 9063 0 8617 18 0 18 18 0 158 0 amappl16 200 1589 0 1572 5 0 5 5 0 8 4 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 140 0 130 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1054 0 1025 2 0 2 2 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 0 1 1 0 8 1 amappl9 144 249 0 249 1 0 1 1 0 8 1 amappl8 136 36 0 35 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 191 0 188 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 264 0 251 1 0 1 1 0 8 0 amappl3 96 1489 0 1386 3 0 3 3 0 8 0 amappl2 88 608 0 554 2 0 2 2 0 8 0 amappl1 80 7977 0 7435 13 0 13 13 0 8 1 amappl 88 2518 0 2365 4 0 4 4 0 92 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 448 0 419 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 448 0 419 1 0 1 1 0 8 0 vmmpekpl 168 5023 0 4997 2 0 2 2 0 8 0 vmmpepl 168 34461 0 32675 81 0 81 81 0 357 1 vmsppl 368 447 0 419 4 0 4 4 0 8 1 rwobjpl 40 13646 0 11148 26 0 26 26 0 8 0 pdppl 4096 902 0 838 94 18 76 76 0 8 12 pvpl 32 214304 0 206207 68 0 68 68 0 265 2 pmappl 216 447 0 419 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 364 0 18 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003b960b90,0,ffff80003b960b00,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148ba00,ffff80003b960c38,ffff80003b960b90,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8078b45000,ffff8000014057b8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014057b8,fffffd8078b45000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014057b8,0,ffff80003b960de8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f87e8,3,ffff80003b960ee0,808,ffff80003b960f80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:782 sys_sendto(ffff80002a7f87e8,ffff80003b961030,ffff80003b960f80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:560 syscall(ffff80003b961030) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b961030) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9dfebfef870, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80698ab898) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003b960b90,0,ffff80003b960b00,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148ba00,ffff80003b960c38,ffff80003b960b90,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd8078b45000,ffff8000014057b8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014057b8,fffffd8078b45000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014057b8,0,ffff80003b960de8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f87e8,3,ffff80003b960ee0,808,ffff80003b960f80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:782 sys_sendto(ffff80002a7f87e8,ffff80003b961030,ffff80003b960f80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:560 syscall(ffff80003b961030) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b961030) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9dfebfef870, count: -10