uvm_fault(0xffffffff838dccf0, 0xffff8000014900ca, 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 *229797 74635 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9738a0,0,ffff80003c973810,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014db500,ffff80003c973948,ffff80003c9738a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e675600,ffff8000014b93c8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014b93c8,fffffd806e675600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014b93c8,0,ffff80003c973af8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f8d18,3,ffff80003c973bf0,808,ffff80003c973c90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f8d18,ffff80003c973d40,ffff80003c973c90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8903944b880, 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(0xffffffff838dccf0, 0xffff8000014900ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9738a0,0,ffff80003c973810,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014db500,ffff80003c973948,ffff80003c9738a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e675600,ffff8000014b93c8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014b93c8,fffffd806e675600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014b93c8,0,ffff80003c973af8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f8d18,3,ffff80003c973bf0,808,ffff80003c973c90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f8d18,ffff80003c973d40,ffff80003c973c90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8903944b880, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c9736f0 rbx 0xde rdx 0 rcx 0xffff80000148ffe0 rax 0xfffffd806e675ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x3d63ec80de7196f r11 0x29dbbb32fcf74632 r12 0x23 r13 0xfffffd806e675c00 r14 0xfffffd806ba34788 r15 0xffff800000039058 rip 0xffffffff831a1c17 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c973670 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=229797 pid=74635 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800038165780,0xffffffff838c0b70 process=0xffff800038156dd0 user=0xffff80003c96e000, vmspace=0xfffffd80793d7188 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 74635 482254 61062 0 2 0 syz-executor *74635 229797 61062 0 7 0x4000000 syz-executor 81549 272188 44459 0 2 0 syz-executor 81549 264725 44459 0 3 0x4000080 fsleep syz-executor 44000 491705 1831 0 2 0 syz-executor 44000 316002 1831 0 3 0x4000080 fsleep syz-executor 18937 282419 4627 0 2 0x400000 syz-executor 18937 297040 4627 0 3 0x4400080 fsleep syz-executor 68330 495383 85205 0 2 0 syz-executor 68330 91687 85205 0 3 0x4000080 fsleep syz-executor 75252 107596 11989 0 2 0 syz-executor 75252 47020 11989 0 3 0x4000080 sbwait syz-executor 75252 325883 11989 0 3 0x4000000 sbufrcv syz-executor 22024 414980 66056 0 2 0 syz-executor 22024 238549 66056 0 3 0x4000080 fsleep syz-executor 10963 426296 55618 0 3 0x3000 suspend syz-executor 10963 101681 55618 0 2 0x4081000 syz-executor 75177 264311 0 0 3 0x14200 bored sosplice 44459 39806 45558 0 3 0x82 nanoslp syz-executor 66056 214443 45558 0 3 0x82 nanoslp syz-executor 1831 255837 45558 0 3 0x82 nanoslp syz-executor 55618 412180 45558 0 3 0x82 nanoslp syz-executor 85205 199958 45558 0 3 0x82 nanoslp syz-executor 4627 420242 45558 0 3 0x82 nanoslp syz-executor 11989 72987 45558 0 3 0x82 nanoslp syz-executor 61062 447095 45558 0 3 0x82 nanoslp syz-executor 45558 339224 58855 0 3 0x82 kqread syz-executor 58855 166173 81942 0 3 0x10008a sigsusp ksh 81942 494696 20862 0 3 0x98 kqread sshd-session 20862 56059 23825 0 3 0x92 kqread sshd-session 25177 139839 1 0 3 0x100083 ttyin getty 23825 303647 1 0 3 0x88 kqread sshd 38160 490152 72583 73 3 0x1100090 kqread syslogd 72583 32145 1 0 3 0x100082 sbwait syslogd 43945 7881 1 0 3 0x100080 kqread resolvd 27761 309686 33831 77 3 0x100092 kqread dhcpleased 31379 427359 33831 77 3 0x100092 kqread dhcpleased 33831 465367 1 0 3 0x80 kqread dhcpleased 31145 120927 0 0 3 0x14200 bored smr 60440 395689 0 0 2 0x14200 zerothread 39746 11649 0 0 3 0x14200 aiodoned aiodoned 30914 112313 0 0 3 0x14200 syncer update 91390 278185 0 0 3 0x14200 cleaner cleaner 79442 272549 0 0 3 0x14200 reaper reaper 55179 205367 0 0 3 0x14200 pgdaemon pagedaemon 7930 388480 0 0 3 0x14200 bored viomb 20218 205419 0 0 3 0x40014200 acpi0 acpi0 85256 266752 0 0 3 0x14200 bored softnet7 40254 122678 0 0 3 0x14200 bored softnet6 5707 5208 0 0 3 0x14200 bored softnet5 54715 427183 0 0 3 0x14200 bored softnet4 95794 414571 0 0 3 0x14200 bored softnet3 95296 120509 0 0 3 0x14200 bored softnet2 47042 310053 0 0 3 0x14200 bored softnet1 37119 11782 0 0 3 0x14200 bored softnet0 9411 424364 0 0 3 0x14200 bored systqmp 86807 350190 0 0 3 0x14200 bored systq 29974 11301 0 0 3 0x40014200 tmoslp softclock 46342 413702 0 0 3 0x40014200 idle0 1 200693 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 10187 11059K 11642K 166960K 11559 0 pcb 17 16K 18K 166960K 197 0 rtable 219 8K 8K 166960K 285 0 pf 31 13K 17K 166960K 42 0 ifaddr 42 7K 7K 166960K 49 0 ifgroup 50 2K 2K 166960K 61 0 sysctl 1 1K 9K 166960K 7 0 counters 32 17K 18K 166960K 40 0 ioctlops 0 0K 4K 166960K 78 0 iov 1 4K 4K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1402 88K 89K 166960K 1560 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 279 0 sigio 0 0K 0K 166960K 4 0 proc 60 59K 91K 166960K 478 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 23 0 in_multi 99 7K 7K 166960K 106 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 352 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 238 163K 173K 166960K 4119 0 UVM aobj 11 2K 2K 166960K 12 0 pinsyscall 39 78K 92K 166960K 1306 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 11 0K 2K 166960K 31 0 temp 39 8635K 8699K 166960K 10679 0 kqueue 13 20K 28K 166960K 54 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 48 0 44 1 0 1 1 0 8 0 rtentry 136 98 0 2 4 0 4 4 0 8 0 unpcb 144 120 0 100 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 47 0 42 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 424 0 412 13 4 9 13 0 8 8 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 104 17 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 7 0 7 1 0 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pfstkey 128 1 0 1 1 0 1 1 0 8 1 pfstate 384 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 256 445 0 6 28 0 28 28 0 8 0 art_table 40 447 0 6 5 0 5 5 0 8 0 art_node 32 98 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 7 0 3 1 0 1 1 0 8 0 shmpl 112 9 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1881 0 380 95 0 95 95 0 8 0 ffsino 256 1881 0 380 95 0 95 95 0 8 0 nchpl 144 2243 0 564 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2072 0 0 43 0 43 43 0 8 0 vnodes 216 2072 0 0 116 0 116 116 0 8 0 namei 1024 7134 0 7134 2 0 2 2 0 8 2 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 7870 0 7870 8 0 8 8 1 8 8 plimitpl 152 81 0 65 1 0 1 1 0 8 0 sigapl 424 562 0 511 7 0 7 7 0 8 1 knotepl 120 14761 0 14714 9 0 9 9 0 8 7 kqueuepl 184 142 0 132 1 0 1 1 0 8 0 pipepl 304 104 0 77 3 0 3 3 0 8 0 fdescpl 448 541 0 511 5 0 5 5 0 8 1 filepl 120 2738 0 2514 12 0 12 12 0 8 4 lockfpl 104 60 0 58 1 0 1 1 0 8 0 lockfspl 48 25 0 23 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 342 0 331 1 0 1 1 0 8 0 zombiepl 144 512 0 511 1 0 1 1 0 8 0 processpl 1168 562 0 511 5 0 5 5 0 8 1 procpl 664 805 0 745 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 552 597 0 561 13 3 10 13 0 8 7 mcl64k 65536 7 0 6 1 0 1 1 0 8 0 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2650 0 2598 14 0 14 14 0 8 6 mcl2k 2048 376 0 373 2 0 2 2 0 8 1 mtagpl 96 6 0 4 1 0 1 1 0 8 0 mbufpl 256 5364 0 5193 12 0 12 12 0 8 0 bufpl 280 3093 0 118 213 0 213 213 0 8 0 anonpl 24 121007 0 117837 45 0 45 45 0 187 16 amapchunkpl 152 12693 0 12179 27 0 27 27 0 158 7 amappl16 200 2505 0 2477 18 6 12 15 0 8 8 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1147 0 1117 3 0 3 3 0 8 1 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 0 1 1 0 8 1 amappl9 144 250 0 250 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 94 0 84 1 0 1 1 0 8 0 amappl6 120 173 0 169 1 0 1 1 0 8 0 amappl5 112 118 0 111 1 0 1 1 0 8 0 amappl4 104 269 0 254 1 0 1 1 0 8 0 amappl3 96 2137 0 2019 4 0 4 4 0 8 1 amappl2 88 622 0 565 2 0 2 2 0 8 0 amappl1 80 8608 0 8058 13 0 13 13 0 8 0 amappl 88 3450 0 3278 5 0 5 5 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 11 0 1 1 0 1 1 0 8 0 uaddrrnd 24 541 0 511 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 541 0 511 1 0 1 1 0 8 0 vmmpekpl 168 6148 0 6122 2 0 2 2 0 8 0 vmmpepl 168 41547 0 39660 93 0 93 93 0 357 8 vmsppl 368 540 0 511 4 0 4 4 0 8 1 rwobjpl 40 16228 0 13288 32 0 32 32 0 8 0 pdppl 4096 1089 0 1022 99 32 67 79 0 8 0 pvpl 32 278168 0 269679 125 0 125 125 0 265 39 pmappl 216 540 0 511 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 373 0 32 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9738a0,0,ffff80003c973810,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014db500,ffff80003c973948,ffff80003c9738a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e675600,ffff8000014b93c8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014b93c8,fffffd806e675600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014b93c8,0,ffff80003c973af8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f8d18,3,ffff80003c973bf0,808,ffff80003c973c90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f8d18,ffff80003c973d40,ffff80003c973c90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8903944b880, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ba34788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9738a0,0,ffff80003c973810,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014db500,ffff80003c973948,ffff80003c9738a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e675600,ffff8000014b93c8) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014b93c8,fffffd806e675600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014b93c8,0,ffff80003c973af8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f8d18,3,ffff80003c973bf0,808,ffff80003c973c90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f8d18,ffff80003c973d40,ffff80003c973c90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8903944b880, count: -10