uvm_fault(0xffffffff838b2148, 0xffff8000014ac0aa, 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 *342830 14168 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9f13e0,0,ffff80003c9f1350,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014f7c00,ffff80003c9f1488,ffff80003c9f13e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806283b200,ffff800001421c10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001421c10,fffffd806283b200,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001421c10,0,ffff80003c9f1638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f0030,3,ffff80003c9f1730,808,ffff80003c9f17d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f0030,ffff80003c9f1880,ffff80003c9f17d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9f1880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1385f942f0, 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(0xffffffff838b2148, 0xffff8000014ac0aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9f13e0,0,ffff80003c9f1350,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014f7c00,ffff80003c9f1488,ffff80003c9f13e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806283b200,ffff800001421c10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001421c10,fffffd806283b200,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001421c10,0,ffff80003c9f1638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f0030,3,ffff80003c9f1730,808,ffff80003c9f17d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f0030,ffff80003c9f1880,ffff80003c9f17d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9f1880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1385f942f0, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c9f1230 rbx 0xde rdx 0 rcx 0xffff8000014abfc0 rax 0xfffffd806283b7e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xe8e26ac6fe2327b4 r11 0xd3bf0c918fe0434 r12 0x3d r13 0xfffffd806283b700 r14 0xfffffd806f26f330 r15 0xffff80000019f058 rip 0xffffffff81588db4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9f11b0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=342830 pid=14168 tcnt=2 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=0xffff80002a7b8fa0,0xffffffff838cc2c8 process=0xffff8000ffff28a0 user=0xffff80003c9ec000, vmspace=0xfffffd807eb81cf0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14168 452918 42329 0 2 0 syz-executor *14168 342830 42329 0 7 0x4000000 syz-executor 37288 153117 92854 0 3 0x80 nanoslp syz-executor 37288 30556 92854 0 3 0x4000080 ttyin syz-executor 37288 473049 92854 0 3 0x4000080 fsleep syz-executor 22316 187411 90439 0 3 0x80 nanoslp syz-executor 22316 512792 90439 0 3 0x4000080 pppxread syz-executor 22316 255926 90439 0 2 0x4000000 syz-executor 22316 171777 90439 0 2 0x4000000 syz-executor 14959 225298 48299 0 2 0 syz-executor 14959 240655 48299 0 3 0x4000080 fsleep syz-executor 14959 30915 48299 0 3 0x4000080 fsleep syz-executor 14959 501582 48299 0 2 0x4000000 syz-executor 24858 156574 51206 0 2 0 syz-executor 24858 508461 51206 0 3 0x4000080 ttyin syz-executor 24858 467860 51206 0 2 0x4000000 syz-executor 24858 71318 51206 0 2 0x4000000 syz-executor 67992 411787 93699 0 2 0 syz-executor 67992 74802 93699 0 3 0x4000080 netcon syz-executor 67992 404646 93699 0 2 0x4000000 syz-executor 67992 500875 93699 0 2 0x4000000 syz-executor 48594 117110 1 0 3 0x100083 ttyin getty 10110 124657 0 0 3 0x14200 acct acct 33504 113893 0 0 3 0x14280 nfsidl nfsio 91251 1042 0 0 3 0x14280 nfsidl nfsio 57453 244996 0 0 3 0x14280 nfsidl nfsio 68368 383355 0 0 3 0x14280 nfsidl nfsio 61475 376243 0 0 3 0x14280 nfsidl nfsio 13201 362249 0 0 3 0x14280 nfsidl nfsio 68329 114022 0 0 3 0x14280 nfsidl nfsio 75953 344470 0 0 3 0x14280 nfsidl nfsio 54456 76873 0 0 3 0x14280 nfsidl nfsio 30171 128700 0 0 3 0x14280 nfsidl nfsio 45109 25837 0 0 3 0x14280 nfsidl nfsio 6191 30116 0 0 3 0x14280 nfsidl nfsio 96515 116915 0 0 3 0x14280 nfsidl nfsio 94629 460359 0 0 3 0x14280 nfsidl nfsio 32518 257763 0 0 3 0x14280 nfsidl nfsio 41408 184865 0 0 3 0x14280 nfsidl nfsio 98189 90737 0 0 3 0x14280 nfsidl nfsio 88230 519950 0 0 3 0x14280 nfsidl nfsio 41674 36475 0 0 3 0x14280 nfsidl nfsio 61911 178565 0 0 3 0x14280 nfsidl nfsio 48299 177886 94157 0 3 0x82 nanoslp syz-executor 79286 402530 94157 0 2 0x2 syz-executor 51206 367875 94157 0 3 0x82 nanoslp syz-executor 92854 485374 94157 0 3 0x82 nanoslp syz-executor 58450 49116 94157 0 2 0x2 syz-executor 42329 340813 94157 0 3 0x82 nanoslp syz-executor 93699 35753 94157 0 3 0x82 nanoslp syz-executor 90439 168251 94157 0 3 0x82 nanoslp syz-executor 94157 509585 62844 0 3 0x82 kqread syz-executor 62844 289135 73552 0 3 0x10008a sigsusp ksh 73552 271193 9523 0 3 0x98 kqread sshd-session 9523 395331 88340 0 3 0x92 kqread sshd-session 88340 170052 1 0 3 0x88 kqread sshd 69468 225075 78477 73 3 0x1100090 kqread syslogd 78477 157711 1 0 3 0x100082 sbwait syslogd 13484 406516 1 0 3 0x100080 kqread resolvd 66664 449127 43515 77 3 0x100092 kqread dhcpleased 15514 109865 43515 77 3 0x100092 kqread dhcpleased 43515 237944 1 0 3 0x80 kqread dhcpleased 67223 373969 0 0 3 0x14200 bored smr 47653 341566 0 0 2 0x14200 zerothread 86412 360393 0 0 3 0x14200 aiodoned aiodoned 2751 154925 0 0 3 0x14200 syncer update 84696 519835 0 0 3 0x14200 cleaner cleaner 68599 472702 0 0 3 0x14200 reaper reaper 41978 97633 0 0 3 0x14200 pgdaemon pagedaemon 9299 110516 0 0 3 0x14200 bored viomb 94677 350578 0 0 3 0x40014200 acpi0 acpi0 9470 329261 0 0 3 0x14200 bored softnet0 35267 269134 0 0 3 0x14200 bored systqmp 40550 491616 0 0 3 0x14200 bored systq 91970 468093 0 0 3 0x40014200 tmoslp softclock 88469 472684 0 0 3 0x40014200 idle0 1 385020 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 10185 11183K 11757K 166960K 13077 0 pcb 18 16K 17K 166960K 233 0 rtable 253 9K 9K 166960K 471 0 pf 30 12K 15K 166960K 101 0 ifaddr 43 8K 8K 166960K 82 0 ifgroup 50 2K 2K 166960K 121 0 sysctl 4 1K 9K 166960K 9 0 counters 33 17K 18K 166960K 140 0 ioctlops 0 0K 4K 166960K 294 0 iov 1 12K 16K 166960K 186 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 93K 166960K 2310 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 22 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 866 0 sigio 0 0K 0K 166960K 21 0 proc 60 59K 100K 166960K 567 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 153 0 in_multi 99 7K 7K 166960K 122 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 664 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 33 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 149K 159K 166960K 9437 0 UVM aobj 24 8K 8K 166960K 26 0 pinsyscall 37 74K 93K 166960K 1963 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 63 0 NDP 11 0K 2K 166960K 56 0 temp 70 8669K 8925K 166960K 51190 0 kqueue 13 20K 34K 166960K 158 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 120 119 0 115 2 1 1 2 0 8 0 rtentry 136 140 0 32 4 0 4 4 0 8 0 unpcb 144 692 0 675 4 3 1 4 0 8 0 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 386 0 376 7 6 1 7 0 8 0 arp 96 22 0 3 1 0 1 1 0 8 0 ipq 40 5 0 1 1 0 1 1 0 8 0 ipqe 40 7 0 3 1 0 1 1 0 8 0 inpcb 328 1148 0 1133 12 10 2 12 0 8 0 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 3 1 0 1 1 0 8 0 nd6 112 27 0 1 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 103 0 103 1 1 0 1 0 8 0 pppxif 1384 5 0 5 1 1 0 1 0 8 0 pfrule 1344 3 0 2 1 0 1 1 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 575 0 121 30 1 29 30 0 8 0 art_table 40 579 0 121 5 0 5 5 0 8 0 art_node 32 137 0 40 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 21 0 2 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2964 0 1458 95 0 95 95 0 8 0 ffsino 256 2964 0 1458 95 0 95 95 0 8 0 nchpl 144 4218 0 2520 64 0 64 64 0 8 0 rtmask 32 5 0 5 1 1 0 1 0 8 0 vnodes 216 3723 0 0 207 0 207 207 0 8 0 namei 1024 15154 0 15153 3 2 1 2 0 8 0 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 800 2 0 0 1 0 1 1 0 8 0 kstatmem 264 78 0 56 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 15149 0 15149 8 7 1 8 1 8 1 plimitpl 152 184 0 166 1 0 1 1 0 8 0 sigapl 424 1180 0 1118 8 0 8 8 0 8 0 knotepl 120 320120 0 320073 36 34 2 18 0 8 0 kqueuepl 184 323 0 313 4 3 1 4 0 8 0 pipepl 304 290 0 263 3 0 3 3 0 8 0 fdescpl 448 1146 0 1118 5 1 4 5 0 8 0 filepl 120 7838 0 7611 14 5 9 14 0 8 0 lockfpl 104 357 0 354 1 0 1 1 0 8 0 lockfspl 48 157 0 154 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 45 0 29 1 0 1 1 0 8 0 ucredpl 104 946 0 935 1 0 1 1 0 8 0 zombiepl 144 1120 0 1120 2 1 1 1 0 8 1 processpl 1152 1180 0 1118 5 0 5 5 0 8 0 procpl 664 2328 0 2251 7 0 7 7 0 8 0 sosppl 176 5 0 5 1 1 0 1 0 8 0 sockpl 552 2024 0 1988 15 12 3 13 0 8 0 mcl64k 65536 134 0 134 1 1 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 13 0 13 1 1 0 1 0 8 0 mcl4k 4096 3452 0 3400 14 7 7 14 0 8 0 mcl2k 2048 1416 0 1405 2 0 2 2 0 8 0 mtagpl 96 244 0 6 6 0 6 6 0 8 0 mbufpl 256 14050 0 13586 85 55 30 85 0 8 0 bufpl 280 6089 0 200 421 0 421 421 0 8 0 anonpl 24 190939 0 182694 83 8 75 83 0 187 0 amapchunkpl 152 31218 0 30647 31 6 25 31 0 158 0 amappl16 200 3553 0 3291 30 10 20 27 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 16 0 16 1 1 0 1 0 8 0 amappl13 176 420 0 419 1 0 1 1 0 8 0 amappl12 168 1499 0 1460 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 68 0 58 1 0 1 1 0 8 0 amappl9 144 319 0 319 1 1 0 1 0 8 0 amappl8 136 19 0 17 1 0 1 1 0 8 0 amappl7 128 80 0 79 1 0 1 1 0 8 0 amappl6 120 280 0 268 1 0 1 1 0 8 0 amappl5 112 71 0 62 1 0 1 1 0 8 0 amappl4 104 395 0 370 1 0 1 1 0 8 0 amappl3 96 6093 0 5988 4 1 3 4 0 8 0 amappl2 88 541 0 487 2 0 2 2 0 8 0 amappl1 80 12607 0 12067 13 0 13 13 0 8 0 amappl 88 8569 0 8396 5 0 5 5 0 92 0 uvmvnodes 80 123 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 1 1 0 1 0 8 0 dma64 64 7 0 7 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 25 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1146 0 1118 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1146 0 1118 1 0 1 1 0 8 0 vmmpekpl 168 10552 0 10518 2 0 2 2 0 8 0 vmmpepl 168 79350 0 77336 101 8 93 101 0 357 0 vmsppl 368 1145 0 1118 4 1 3 4 0 8 0 rwobjpl 40 22706 0 21460 15 0 15 15 0 8 0 pdppl 4096 2302 0 2238 106 38 68 80 0 8 4 pvpl 32 516609 0 503049 166 21 145 166 0 265 0 pmappl 216 1147 0 1118 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 460 0 117 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9f13e0,0,ffff80003c9f1350,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014f7c00,ffff80003c9f1488,ffff80003c9f13e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806283b200,ffff800001421c10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001421c10,fffffd806283b200,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001421c10,0,ffff80003c9f1638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f0030,3,ffff80003c9f1730,808,ffff80003c9f17d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f0030,ffff80003c9f1880,ffff80003c9f17d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9f1880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1385f942f0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806f26f330) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9f13e0,0,ffff80003c9f1350,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014f7c00,ffff80003c9f1488,ffff80003c9f13e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806283b200,ffff800001421c10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001421c10,fffffd806283b200,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001421c10,0,ffff80003c9f1638,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f0030,3,ffff80003c9f1730,808,ffff80003c9f17d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f0030,ffff80003c9f1880,ffff80003c9f17d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9f1880) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1880) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1385f942f0, count: -10