uvm_fault(0xffffffff83a82418, 0xffff80000160b0ca, 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 *201104 73410 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80002d4af620,0,ffff80002d4af590,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001635000,ffff80002d4af6c8,ffff80002d4af620,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1806d9c8400,ffff800010fdcf28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdcf28,fffff1806d9c8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdcf28,0,ffff80002d4af878,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a765770,26,ffff80002d4af970,808,ffff80002d4afa10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a765770,ffff80002d4afac0,ffff80002d4afa10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002d4afac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002d4afac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd87f64fd90, 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(0xffffffff83a82418, 0xffff80000160b0ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80002d4af620,0,ffff80002d4af590,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001635000,ffff80002d4af6c8,ffff80002d4af620,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1806d9c8400,ffff800010fdcf28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdcf28,fffff1806d9c8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdcf28,0,ffff80002d4af878,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a765770,26,ffff80002d4af970,808,ffff80002d4afa10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a765770,ffff80002d4afac0,ffff80002d4afa10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002d4afac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002d4afac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd87f64fd90, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80002d4af470 rbx 0xde rdx 0 rcx 0xffff80000160afe0 rax 0xfffff1806d9c81e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x8e628284fbebe644 r11 0x767fd5d36495d575 r12 0x1e r13 0xfffff1806d9c8100 r14 0xfffff1800e16ecd8 r15 0xffff8000002a2058 rip 0xffffffff82c2fa14 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002d4af3f0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=201104 pid=73410 tcnt=3 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=0xffff80002a765240,0xffff80002a764fb8 process=0xffff800045ffb198 user=0xffff80002d4aa000, vmspace=0xfffff1806cfea5d0 estcpu=23, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 65551 245940 92809 0 2 0 syz-executor 73410 300670 30592 0 2 0 syz-executor *73410 201104 30592 0 7 0x4000000 syz-executor 73410 432651 30592 0 3 0x4000080 fsleep syz-executor 35727 437746 86045 0 2 0 syz-executor 43681 365721 97793 0 2 0 syz-executor 43681 255429 97793 0 3 0x4000080 fsleep syz-executor 43681 510787 97793 0 3 0x4000080 fsleep syz-executor 57181 223064 56782 0 2 0 syz-executor 57181 20614 56782 0 3 0x4000080 fsleep syz-executor 84939 362935 95488 0 2 0 syz-executor 84939 355701 95488 0 3 0x4000080 pipewr syz-executor 32754 501262 69611 0 2 0x2 syz-executor 95488 517275 69611 0 2 0xc82 syz-executor 97793 247001 69611 0 2 0xc82 syz-executor 7746 401060 69611 0 2 0xc82 syz-executor 56782 157082 69611 0 3 0x82 nanoslp syz-executor 30592 61794 69611 0 2 0xc82 syz-executor 92809 111838 69611 0 3 0x82 nanoslp syz-executor 86045 470219 69611 0 2 0xc82 syz-executor 69611 461534 79748 0 3 0x82 kqread syz-executor 79748 427662 64927 0 3 0x10008a sigsusp ksh 64927 459270 48173 0 3 0x98 kqread sshd-session 48173 465694 70951 0 3 0x92 kqread sshd-session 20569 345952 1 0 3 0x100083 ttyin getty 70951 244825 1 0 3 0x88 kqread sshd 62974 380500 47685 73 3 0x1100090 kqread syslogd 47685 298207 1 0 3 0x100082 sbwait syslogd 72939 436475 1 0 3 0x100080 kqread resolvd 45292 164444 95366 77 3 0x100092 kqread dhcpleased 10143 36952 95366 77 3 0x100092 kqread dhcpleased 95366 159822 1 0 3 0x80 kqread dhcpleased 83588 281189 0 0 3 0x14200 bored smr 61557 207782 0 0 2 0x14200 zerothread 58850 435096 0 0 3 0x14200 aiodoned aiodoned 51468 439501 0 0 3 0x14200 syncer update 85098 332787 0 0 3 0x14200 cleaner cleaner 23716 164885 0 0 3 0x14200 reaper reaper 28079 272720 0 0 3 0x14200 pgdaemon pagedaemon 429 454195 0 0 3 0x14200 bored viomb 49386 139025 0 0 3 0x40014200 acpi0 acpi0 1279 53954 0 0 3 0x14200 bored softnet0 74522 34997 0 0 3 0x14200 bored systqmp 36023 235219 0 0 3 0x14200 bored systq 82100 50242 0 0 3 0x40014200 tmoslp softclock 92711 311186 0 0 3 0x40014200 idle0 1 28413 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 11038 12122K 12297K 166960K 12282 0 pcb 18 12K 12K 166960K 33 0 rtable 250 8K 8K 166960K 400 0 pf 34 13K 13K 166960K 37 0 ifaddr 42 7K 7K 166960K 47 0 ifgroup 55 2K 2K 166960K 60 0 sysctl 2 1K 9K 166960K 7 0 counters 34 17K 18K 166960K 37 0 ioctlops 0 0K 4K 166960K 80 0 iov 0 0K 12K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1295 82K 82K 166960K 1420 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 14 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 229 0 sigio 0 0K 0K 166960K 2 0 proc 60 59K 91K 166960K 521 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 11 0 in_multi 95 7K 7K 166960K 107 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 369 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 205 158K 172K 166960K 3542 0 UVM aobj 5 2K 4K 166960K 6 0 pinsyscall 38 76K 91K 166960K 1329 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 8 0 NDP 12 0K 2K 166960K 30 0 temp 38 9110K 9142K 166960K 3801 0 kqueue 14 22K 26K 166960K 46 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 136 118 0 9 4 0 4 4 0 8 0 unpcb 144 105 0 90 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 34 0 30 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 121 0 112 2 0 2 2 0 8 1 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 112 26 0 4 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfstkey 128 2 0 2 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1360 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 479 0 42 30 0 30 30 0 8 2 art_table 40 482 0 42 5 0 5 5 0 8 0 art_node 32 118 0 18 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 12 0 2 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1716 0 254 92 0 92 92 0 8 0 ffsino 256 1716 0 254 92 0 92 92 0 8 0 nchpl 144 2048 0 356 63 0 63 63 0 8 0 vnodes 216 1836 0 0 102 0 102 102 0 8 0 namei 1024 6113 0 6113 2 0 2 2 0 8 2 kstatmem 264 27 0 2 2 0 2 2 0 8 0 scxspl 216 7007 0 7007 8 0 8 8 1 8 8 plimitpl 152 39 0 21 1 0 1 1 0 8 0 sigapl 424 524 0 482 6 0 6 6 0 8 1 knotepl 120 6416 0 6365 10 0 10 10 0 8 8 kqueuepl 184 44 0 34 1 0 1 1 0 8 0 pipepl 304 128 0 100 3 0 3 3 0 8 0 fdescpl 448 511 0 482 5 0 5 5 0 8 1 filepl 120 1972 0 1723 8 0 8 8 0 8 0 lockfpl 104 44 0 41 1 0 1 1 0 8 0 lockfspl 48 23 0 20 1 0 1 1 0 8 0 sessionpl 144 31 0 23 1 0 1 1 0 8 0 pgrppl 48 40 0 24 1 0 1 1 0 8 0 ucredpl 104 188 0 177 1 0 1 1 0 8 0 zombiepl 144 483 0 482 1 0 1 1 0 8 0 processpl 1152 524 0 482 4 0 4 4 0 8 0 procpl 664 666 0 618 5 0 5 5 0 8 0 sockpl 552 283 0 255 4 0 4 4 0 8 1 mcl64k 65536 4 0 3 1 0 1 1 0 8 0 mcl8k 8192 6 0 5 1 0 1 1 0 8 0 mcl4k 4096 2597 0 2543 14 0 14 14 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 201 0 200 2 0 2 2 0 8 1 mtagpl 96 9 0 6 1 0 1 1 0 8 0 mbufpl 256 5165 0 4989 14 0 14 14 0 8 1 bufpl 272 2343 0 102 150 0 150 150 0 8 0 anonpl 24 92570 0 89570 32 0 32 32 0 187 9 amapchunkpl 152 10476 0 10061 27 0 27 27 0 158 9 amappl16 200 1330 0 1307 4 0 4 4 0 8 2 amappl15 192 41 0 40 1 0 1 1 0 8 0 amappl14 184 461 0 460 1 0 1 1 0 8 0 amappl13 176 126 0 116 1 0 1 1 0 8 0 amappl12 168 743 0 717 2 0 2 2 0 8 0 amappl11 160 32 0 31 1 0 1 1 0 8 0 amappl10 152 63 0 53 1 0 1 1 0 8 0 amappl9 144 279 0 279 1 0 1 1 0 8 1 amappl8 136 94 0 93 1 0 1 1 0 8 0 amappl7 128 142 0 131 1 0 1 1 0 8 0 amappl6 120 148 0 147 1 0 1 1 0 8 0 amappl5 112 127 0 119 1 0 1 1 0 8 0 amappl4 104 263 0 247 1 0 1 1 0 8 0 amappl3 96 2001 0 1907 3 0 3 3 0 8 0 amappl2 88 527 0 471 2 0 2 2 0 8 0 amappl1 80 10521 0 9975 13 0 13 13 0 8 1 amappl 88 2842 0 2699 4 0 4 4 0 92 0 uvmvnodes 80 100 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 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 511 0 482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 511 0 482 1 0 1 1 0 8 0 vmmpekpl 168 5957 0 5924 2 0 2 2 0 8 0 vmmpepl 168 41420 0 39679 80 0 80 80 0 357 1 vmsppl 368 510 0 482 4 0 4 4 0 8 1 rwobjpl 40 14577 0 13653 11 0 11 11 0 8 0 pdppl 4096 1028 0 964 96 30 66 78 0 8 2 pvpl 32 240166 0 232122 103 0 103 103 0 265 23 pmappl 216 510 0 482 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 515 0 30 15 0 15 15 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80002d4af620,0,ffff80002d4af590,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001635000,ffff80002d4af6c8,ffff80002d4af620,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1806d9c8400,ffff800010fdcf28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdcf28,fffff1806d9c8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdcf28,0,ffff80002d4af878,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a765770,26,ffff80002d4af970,808,ffff80002d4afa10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a765770,ffff80002d4afac0,ffff80002d4afa10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002d4afac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002d4afac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd87f64fd90, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1800e16ecd8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80002d4af620,0,ffff80002d4af590,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001635000,ffff80002d4af6c8,ffff80002d4af620,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1806d9c8400,ffff800010fdcf28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdcf28,fffff1806d9c8400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdcf28,0,ffff80002d4af878,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a765770,26,ffff80002d4af970,808,ffff80002d4afa10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a765770,ffff80002d4afac0,ffff80002d4afa10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002d4afac0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002d4afac0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd87f64fd90, count: -10