uvm_fault(0xffffffff839b18d8, 0xffff80000164006a, 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 *246857 20654 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390b820,0,ffff80003390b790,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015d3a00,ffff80003390b8c8,ffff80003390b820,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8064945e00,ffff80000158d9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000158d9f0,fffffd8064945e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000158d9f0,0,ffff80003390ba78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7b1240,3,ffff80003390bb70,808,ffff80003390bc10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7b1240,ffff80003390bcc0,ffff80003390bc10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390bcc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390bcc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ef1c6c2e10, 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(0xffffffff839b18d8, 0xffff80000164006a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390b820,0,ffff80003390b790,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015d3a00,ffff80003390b8c8,ffff80003390b820,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8064945e00,ffff80000158d9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000158d9f0,fffffd8064945e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000158d9f0,0,ffff80003390ba78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7b1240,3,ffff80003390bb70,808,ffff80003390bc10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7b1240,ffff80003390bcc0,ffff80003390bc10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390bcc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390bcc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ef1c6c2e10, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003390b670 rbx 0xde rdx 0 rcx 0xffff80000163ff80 rax 0xfffffd8064945be0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xf78aa013f6f6f373 r11 0x923d850977e62a2e r12 0x3f r13 0xfffffd8064945b00 r14 0xfffffd806c3f9d58 r15 0xffff8000002a2058 rip 0xffffffff82b894a4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003390b5f0 ss 0 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=246857 pid=20654 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7b1770,0xffff80002a7b1cb0 process=0xffff8000ffff44a0 user=0xffff800033906000, vmspace=0xfffffd806c9a6740 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34450 510257 82977 0 2 0 syz-executor 34450 435974 82977 0 3 0x4000080 fsleep syz-executor 20654 418059 26986 0 3 0 vmmaplk syz-executor *20654 246857 26986 0 7 0x4000000 syz-executor 20654 228133 26986 0 2 0x4000000 syz-executor 54565 457030 70524 -1 3 0x90 nanoslp syz-executor 54565 319671 70524 -1 3 0x4000090 nanoslp syz-executor 54565 108652 70524 -1 3 0x4000090 fsleep syz-executor 54565 156320 70524 -1 3 0x4000090 fsleep syz-executor 54565 414464 70524 -1 3 0x4000090 fsleep syz-executor 13195 100728 0 0 3 0x14200 acct acct 52258 432026 1 0 3 0x100083 ttyin getty 26986 119362 68013 0 3 0x82 nanoslp syz-executor 17466 264080 68013 0 2 0x2 syz-executor 86219 280918 68013 0 3 0x82 nanoslp syz-executor 5613 157237 0 0 3 0x14280 nfsidl nfsio 99317 109386 0 0 3 0x14280 nfsidl nfsio 22877 160619 0 0 3 0x14280 nfsidl nfsio 28276 320806 0 0 3 0x14280 nfsidl nfsio 86435 363594 0 0 3 0x14280 nfsidl nfsio 47788 473624 0 0 3 0x14280 nfsidl nfsio 14543 415013 0 0 3 0x14280 nfsidl nfsio 51279 59774 0 0 3 0x14280 nfsidl nfsio 33286 206464 0 0 3 0x14280 nfsidl nfsio 53686 395944 0 0 3 0x14280 nfsidl nfsio 10283 418046 0 0 3 0x14280 nfsidl nfsio 49354 339175 0 0 3 0x14280 nfsidl nfsio 62942 329862 0 0 3 0x14280 nfsidl nfsio 96554 265674 0 0 3 0x14280 nfsidl nfsio 60660 331964 0 0 3 0x14280 nfsidl nfsio 42840 183285 0 0 3 0x14280 nfsidl nfsio 60426 427470 0 0 3 0x14280 nfsidl nfsio 34458 395452 0 0 3 0x14280 nfsidl nfsio 25390 22058 0 0 3 0x14280 nfsidl nfsio 94777 138151 0 0 3 0x14280 nfsidl nfsio 82977 472467 68013 0 3 0x82 nanoslp syz-executor 37130 399448 68013 0 3 0x82 nanoslp syz-executor 18750 468238 68013 0 3 0x82 nanoslp syz-executor 29199 517201 68013 0 3 0x82 nanoslp syz-executor 70524 239710 68013 0 3 0x82 nanoslp syz-executor 68013 398391 1776 0 3 0x82 kqread syz-executor 1776 444342 24255 0 3 0x10008a sigsusp ksh 24255 396288 17519 0 3 0x98 kqread sshd-session 17519 262712 54486 0 3 0x92 kqread sshd-session 54486 351255 1 0 3 0x88 kqread sshd 58583 443791 46584 73 3 0x1100090 kqread syslogd 46584 114354 1 0 3 0x100082 sbwait syslogd 35811 126230 1 0 3 0x100080 kqread resolvd 11863 225781 72132 77 3 0x100092 kqread dhcpleased 77441 302953 72132 77 3 0x100092 kqread dhcpleased 72132 11798 1 0 3 0x80 kqread dhcpleased 81779 80336 0 0 3 0x14200 bored smr 55399 173066 0 0 2 0x14200 zerothread 64535 158483 0 0 3 0x14200 aiodoned aiodoned 51451 223225 0 0 3 0x14200 syncer update 64591 508630 0 0 3 0x14200 cleaner cleaner 89827 104278 0 0 3 0x14200 reaper reaper 72434 306303 0 0 3 0x14200 pgdaemon pagedaemon 68545 272572 0 0 3 0x14200 bored viomb 38723 330682 0 0 3 0x40014200 acpi0 acpi0 83977 406292 0 0 3 0x14200 bored softnet0 58423 450735 0 0 3 0x14200 bored systqmp 63018 88087 0 0 3 0x14200 bored systq 912 343957 0 0 3 0x40014200 tmoslp softclock 99236 186505 0 0 3 0x40014200 idle0 1 81348 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 11043 12107K 12582K 166960K 14175 0 pcb 19 14K 16K 166960K 254 0 rtable 215 10K 10K 166960K 596 0 pf 32 13K 17K 166960K 133 0 ifaddr 35 6K 8K 166960K 113 0 ifgroup 45 2K 2K 166960K 177 0 sysctl 3 1K 9K 166960K 13 0 counters 31 17K 18K 166960K 95 0 ioctlops 0 0K 4K 166960K 185 0 iov 0 0K 16K 166960K 114 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1397 88K 88K 166960K 2360 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 43 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 992 0 sigio 0 0K 0K 166960K 16 0 proc 63 67K 100K 166960K 707 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 68 0 in_multi 77 5K 8K 166960K 177 0 ether_multi 1 0K 0K 166960K 9 0 mrt 0 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 139 625K 625K 166960K 139 0 exec 0 0K 1K 166960K 500 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 145K 164K 166960K 10716 0 UVM aobj 26 6K 6K 166960K 32 0 pinsyscall 39 78K 91K 166960K 2190 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 70 0 NDP 9 0K 2K 166960K 74 0 temp 64 8668K 8740K 166960K 40987 0 kqueue 15 24K 33K 166960K 189 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 120 143 0 139 2 0 2 2 0 8 1 rtentry 136 176 0 94 4 0 4 4 0 8 0 unpcb 144 714 0 693 6 3 3 3 0 8 2 syncache 336 13 0 13 3 2 1 1 0 8 1 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 244 0 237 3 1 2 2 0 8 1 arp 96 26 0 12 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 5 0 1 1 0 1 1 0 8 0 inpcb 328 918 0 905 8 5 3 7 0 8 1 ip6q 72 6 0 5 1 0 1 1 0 8 0 ip6af 40 13 0 12 1 0 1 1 0 8 0 nd6 112 37 0 17 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1072 44 0 44 2 1 1 1 0 8 1 pppxif 1384 11 0 11 2 1 1 1 0 8 1 pfrktable 1344 5 0 2 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 3 0 2 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1344 3 0 2 1 0 1 1 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 837 0 506 33 6 27 33 0 8 2 art_table 40 841 0 506 6 0 6 6 0 8 0 art_node 32 176 0 102 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 8 1 0 1 1 0 8 0 semapl 112 38 0 28 1 0 1 1 0 8 0 shmpl 112 26 0 5 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3240 0 1743 95 0 95 95 0 8 0 ffsino 256 3240 0 1743 95 0 95 95 0 8 0 nchpl 144 4597 0 2896 64 0 64 64 0 8 0 rtmask 32 8 0 8 2 2 0 1 0 8 0 vnodes 216 3911 0 0 218 0 218 218 0 8 0 namei 1024 15397 0 15397 3 2 1 2 0 8 1 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 808 3 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 100 0 82 2 0 2 2 0 8 0 scsiplug 72 3 0 3 3 2 1 1 0 8 1 scxspl 216 14472 0 14472 11 9 2 8 1 8 2 plimitpl 152 233 0 215 1 0 1 1 0 8 0 sigapl 424 1305 0 1241 8 0 8 8 0 8 0 knotepl 120 167368 0 167317 44 34 10 17 0 8 8 kqueuepl 184 356 0 344 4 0 4 4 0 8 3 pipepl 304 207 0 180 3 0 3 3 0 8 0 fdescpl 448 1271 0 1241 5 1 4 5 0 8 0 filepl 120 7551 0 7324 13 3 10 11 0 8 1 lockfpl 104 260 0 258 1 0 1 1 0 8 0 lockfspl 48 115 0 113 1 0 1 1 0 8 0 sessionpl 144 33 0 25 1 0 1 1 0 8 0 pgrppl 48 54 0 38 1 0 1 1 0 8 0 ucredpl 104 1414 0 1400 1 0 1 1 0 8 0 zombiepl 144 1444 0 1437 2 1 1 1 0 8 0 processpl 1152 1305 0 1241 5 0 5 5 0 8 0 procpl 664 2605 0 2529 8 0 8 8 0 8 0 sosppl 176 6 0 6 3 2 1 1 0 8 1 sockpl 552 1869 0 1831 14 7 7 8 0 8 4 mcl64k 65536 39 0 39 3 2 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl9k 9216 2 0 2 2 1 1 1 0 8 1 mcl8k 8192 85 0 85 3 2 1 1 0 8 1 mcl4k 4096 3539 0 3484 15 7 8 15 0 8 0 mcl2k 2048 1639 0 1631 3 1 2 3 0 8 1 mtagpl 96 209 0 124 5 0 5 5 0 8 0 mbufpl 256 96101 0 95865 79 54 25 79 0 8 2 bufpl 280 4344 0 124 302 0 302 302 0 8 0 anonpl 24 186072 0 179924 91 29 62 62 0 187 11 amapchunkpl 152 35073 0 34465 45 7 38 38 0 158 13 amappl16 200 2747 0 2615 26 13 13 15 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 7 0 7 2 2 0 1 0 8 0 amappl13 176 441 0 440 1 0 1 1 0 8 0 amappl12 168 1655 0 1616 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 40 0 30 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 89 0 88 1 0 1 1 0 8 0 amappl6 120 307 0 296 1 0 1 1 0 8 0 amappl5 112 162 0 154 1 0 1 1 0 8 0 amappl4 104 432 0 408 1 0 1 1 0 8 0 amappl3 96 6037 0 5941 3 0 3 3 0 8 0 amappl2 88 1435 0 1364 2 0 2 2 0 8 0 amappl1 80 14262 0 13729 14 2 12 13 0 8 0 amappl 88 9762 0 9578 5 0 5 5 0 92 0 uvmvnodes 80 122 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 31 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1271 0 1241 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1271 0 1241 1 0 1 1 0 8 0 vmmpekpl 168 11703 0 11659 3 0 3 3 0 8 0 vmmpepl 168 86991 0 85055 100 10 90 91 0 357 3 vmsppl 368 1270 0 1241 4 1 3 4 0 8 0 rwobjpl 40 24554 0 23435 15 2 13 13 0 8 0 pdppl 4096 2555 0 2486 114 44 70 79 0 8 1 pvpl 32 551525 0 539773 186 43 143 143 0 265 31 pmappl 216 1273 0 1242 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 474 0 129 12 1 11 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390b820,0,ffff80003390b790,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015d3a00,ffff80003390b8c8,ffff80003390b820,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8064945e00,ffff80000158d9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000158d9f0,fffffd8064945e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000158d9f0,0,ffff80003390ba78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7b1240,3,ffff80003390bb70,808,ffff80003390bc10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7b1240,ffff80003390bcc0,ffff80003390bc10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390bcc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390bcc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ef1c6c2e10, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c3f9d58) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390b820,0,ffff80003390b790,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015d3a00,ffff80003390b8c8,ffff80003390b820,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8064945e00,ffff80000158d9f0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000158d9f0,fffffd8064945e00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000158d9f0,0,ffff80003390ba78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7b1240,3,ffff80003390bb70,808,ffff80003390bc10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7b1240,ffff80003390bcc0,ffff80003390bc10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390bcc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390bcc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ef1c6c2e10, count: -10