uvm_fault(0xffffffff83aee2d0, 0xffff80000172106a, 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 * 49601 75994 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9115a0,0,ffff80003c911510,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000171f900,ffff80003c911648,ffff80003c9115a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806ea0f900,ffff8000016039f0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000016039f0,fffffd806ea0f900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016039f0,0,ffff80003c9117f8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000314b3248,5,ffff80003c9118f0,808,ffff80003c911990) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000314b3248,ffff80003c911a40,ffff80003c911990) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c911a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c911a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb05d5143d0, 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(0xffffffff83aee2d0, 0xffff80000172106a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9115a0,0,ffff80003c911510,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000171f900,ffff80003c911648,ffff80003c9115a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806ea0f900,ffff8000016039f0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000016039f0,fffffd806ea0f900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016039f0,0,ffff80003c9117f8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000314b3248,5,ffff80003c9118f0,808,ffff80003c911990) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000314b3248,ffff80003c911a40,ffff80003c911990) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c911a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c911a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb05d5143d0, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c9113f0 rbx 0xde rdx 0 rcx 0xffff800001720f80 rax 0xfffffd806ea0fbe0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x725cd5f36d0b0f09 r11 0x75385417f8a0040 r12 0x19 r13 0xfffffd806ea0fb00 r14 0xfffffd8072647b40 r15 0xffff8000002a2058 rip 0xffffffff81495264 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c911370 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=49601 pid=75994 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=77, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000314b27e8,0xffff8000314b34f0 process=0xffff8000ffffa898 user=0xffff80003c90c000, vmspace=0xfffffd807261ab98 estcpu=27, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 23542 493149 18637 0 2 0 syz-executor 23542 301218 18637 0 2 0x4000000 syz-executor 75994 86339 24587 0 2 0 syz-executor *75994 49601 24587 0 7 0x4000000 syz-executor 75994 25087 24587 0 3 0x4000080 fsleep syz-executor 76200 92733 29900 0 2 0 syz-executor 76200 506044 29900 0 3 0x4000080 sbwait syz-executor 76200 195890 29900 0 3 0x4000080 fsleep syz-executor 36058 354764 78061 0 2 0 syz-executor 36058 100463 78061 0 3 0x4000080 fsleep syz-executor 52308 34445 33373 0 2 0 syz-executor 52308 171357 33373 0 3 0x4000080 piperd syz-executor 52308 254680 33373 0 3 0x4000080 fsleep syz-executor 46843 420484 80250 0 2 0 syz-executor 46843 410744 80250 0 3 0x4000080 fsleep syz-executor 75796 107366 45190 0 2 0x2 ndp 45190 436275 76272 0 3 0x10008a sigsusp sh 92149 352748 43967 0 3 0x80 nanoslp syz-executor 92149 425435 43967 0 3 0x4000080 kqsel syz-executor 92149 318453 43967 0 3 0x4000080 fsleep syz-executor 24587 473309 48100 0 3 0x82 nanoslp syz-executor 43967 427524 48100 0 3 0x82 nanoslp syz-executor 76272 88117 48100 0 3 0x82 wait syz-executor 80250 244808 48100 0 3 0x82 nanoslp syz-executor 78061 511173 48100 0 3 0x82 nanoslp syz-executor 18637 44244 48100 0 3 0x82 nanoslp syz-executor 33373 329714 48100 0 3 0x82 nanoslp syz-executor 29900 307239 48100 0 3 0x82 nanoslp syz-executor 48100 359244 7260 0 3 0x82 kqread syz-executor 7260 121487 36454 0 3 0x10008a sigsusp ksh 36454 55101 2148 0 3 0x98 kqread sshd-session 2148 306947 10166 0 3 0x92 kqread sshd-session 44382 137746 1 0 3 0x100083 ttyin getty 10166 229345 1 0 3 0x88 kqread sshd 63341 486362 73987 73 3 0x1100090 kqread syslogd 73987 109450 1 0 3 0x100082 sbwait syslogd 23127 499838 1 0 3 0x100080 kqread resolvd 89105 21105 78634 77 3 0x100092 kqread dhcpleased 50463 250373 78634 77 3 0x100092 kqread dhcpleased 78634 417253 1 0 3 0x80 kqread dhcpleased 29114 472409 0 0 3 0x14200 bored smr 23617 507950 0 0 2 0x14200 zerothread 73804 13224 0 0 3 0x14200 aiodoned aiodoned 93248 326941 0 0 3 0x14200 syncer update 63390 447433 0 0 3 0x14200 cleaner cleaner 14023 176168 0 0 3 0x14200 reaper reaper 19155 371383 0 0 3 0x14200 pgdaemon pagedaemon 29756 309028 0 0 3 0x14200 bored viomb 53669 500812 0 0 3 0x40014200 acpi0 acpi0 41965 458102 0 0 3 0x14200 bored softnet0 55191 309594 0 0 3 0x14200 bored systqmp 74785 24935 0 0 3 0x14200 bored systq 86797 304306 0 0 3 0x40014200 tmoslp softclock 4756 229582 0 0 3 0x40014200 idle0 1 217275 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 11032 12113K 13205K 166960K 12466 0 pcb 17 12K 12K 166960K 24 0 rtable 251 8K 8K 166960K 382 0 pf 30 12K 19K 166960K 47 0 ifaddr 42 7K 7K 166960K 45 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 34 0 ioctlops 0 0K 4K 166960K 33 0 iov 0 0K 12K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1357 85K 86K 166960K 1503 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 89K 166960K 152 0 proc 60 59K 83K 166960K 498 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 2 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 43 201K 201K 166960K 43 0 exec 0 0K 1K 166960K 367 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 221 152K 157K 166960K 3033 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 41 82K 91K 166960K 1252 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 1 0 NDP 27 2K 2K 166960K 28 0 temp 34 9102K 9108K 166960K 3746 0 kqueue 15 24K 24K 166960K 29 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 39 0 34 1 0 1 1 0 8 0 rtentry 136 111 0 1 4 0 4 4 0 8 0 unpcb 144 45 0 28 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 10 0 5 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 79 0 67 2 0 2 2 0 8 0 nd6 112 23 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pfrule 1360 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 256 452 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 111 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1586 0 127 92 0 92 92 0 8 0 ffsino 256 1586 0 127 92 0 92 92 0 8 0 nchpl 144 1795 0 102 63 0 63 63 0 8 0 vnodes 216 1809 0 0 101 0 101 101 0 8 0 namei 1024 5517 0 5517 2 0 2 2 0 8 2 kstatmem 264 25 0 2 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6042 0 6042 3 0 3 3 1 8 3 plimitpl 152 30 0 13 1 0 1 1 0 8 0 sigapl 424 447 0 403 6 0 6 6 0 8 0 knotepl 120 2661 0 2613 2 0 2 2 0 8 0 kqueuepl 184 28 0 16 1 0 1 1 0 8 0 pipepl 304 123 0 95 3 0 3 3 0 8 0 fdescpl 448 434 0 403 5 0 5 5 0 8 1 filepl 120 1656 0 1437 9 0 9 9 0 8 2 lockfpl 104 145 0 143 2 0 2 2 0 8 1 lockfspl 48 72 0 70 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 169 0 158 1 0 1 1 0 8 0 zombiepl 144 403 0 403 1 0 1 1 0 8 1 processpl 1152 447 0 403 4 0 4 4 0 8 0 procpl 664 477 0 422 5 0 5 5 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 164 0 130 3 0 3 3 0 8 0 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2489 0 2434 14 0 14 14 0 8 6 mcl2k 2048 122 0 121 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4250 0 4115 9 0 9 9 0 8 0 bufpl 280 2247 0 103 154 0 154 154 0 8 0 anonpl 24 89968 0 84750 32 0 32 32 0 186 0 amapchunkpl 152 8456 0 7853 24 0 24 24 0 158 0 amappl16 200 1455 0 1437 5 0 5 5 0 8 4 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 498 0 496 1 0 1 1 0 8 0 amappl13 176 122 0 111 1 0 1 1 0 8 0 amappl12 168 683 0 654 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 0 1 1 0 8 1 amappl10 152 54 0 44 1 0 1 1 0 8 0 amappl9 144 274 0 273 1 0 1 1 0 8 0 amappl8 136 93 0 92 1 0 1 1 0 8 0 amappl7 128 138 0 126 1 0 1 1 0 8 0 amappl6 120 149 0 145 1 0 1 1 0 8 0 amappl5 112 89 0 82 1 0 1 1 0 8 0 amappl4 104 269 0 253 1 0 1 1 0 8 0 amappl3 96 1503 0 1391 3 0 3 3 0 8 0 amappl2 88 526 0 468 2 0 2 2 0 8 0 amappl1 80 10089 0 9510 13 0 13 13 0 8 1 amappl 88 2348 0 2191 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 434 0 403 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 434 0 403 1 0 1 1 0 8 0 vmmpekpl 168 5428 0 5396 2 0 2 2 0 8 0 vmmpepl 168 36994 0 35164 80 0 80 80 0 357 0 vmsppl 368 433 0 403 4 0 4 4 0 8 0 rwobjpl 40 13882 0 12907 11 0 11 11 0 8 1 pdppl 4096 874 0 806 92 14 78 78 0 8 10 pvpl 32 212999 0 202361 88 0 88 88 0 265 2 pmappl 216 433 0 403 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 354 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9115a0,0,ffff80003c911510,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000171f900,ffff80003c911648,ffff80003c9115a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806ea0f900,ffff8000016039f0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000016039f0,fffffd806ea0f900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016039f0,0,ffff80003c9117f8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000314b3248,5,ffff80003c9118f0,808,ffff80003c911990) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000314b3248,ffff80003c911a40,ffff80003c911990) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c911a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c911a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb05d5143d0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8072647b40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9115a0,0,ffff80003c911510,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000171f900,ffff80003c911648,ffff80003c9115a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806ea0f900,ffff8000016039f0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000016039f0,fffffd806ea0f900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016039f0,0,ffff80003c9117f8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000314b3248,5,ffff80003c9118f0,808,ffff80003c911990) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000314b3248,ffff80003c911a40,ffff80003c911990) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c911a40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c911a40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb05d5143d0, count: -10