uvm_fault(0xffffffff839297c0, 0xffff80000149802a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND * 28905 29087 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003a540c18,0,ffff80003a540b90,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014e7300,ffff80003a540cc0,ffff80003a540c18,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd807a5af200,ffff800010fdb8d0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdb8d0,fffffd807a5af200,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdb8d0,0,ffff80003a540e68,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7c2ce8,3,ffff80003a540f60,808,ffff80003a541010) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7c2ce8,ffff80003a5410c0,ffff80003a541010) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003a5410c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a5410c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41fd5d0030, 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(0xffffffff839297c0, 0xffff80000149802a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003a540c18,0,ffff80003a540b90,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014e7300,ffff80003a540cc0,ffff80003a540c18,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd807a5af200,ffff800010fdb8d0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdb8d0,fffffd807a5af200,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdb8d0,0,ffff80003a540e68,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7c2ce8,3,ffff80003a540f60,808,ffff80003a541010) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7c2ce8,ffff80003a5410c0,ffff80003a541010) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003a5410c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a5410c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41fd5d0030, count: -10 ddb> show registers rdi 0xffff80002ccfc000 rsi 0x8da rbp 0xffff80003a540a60 rbx 0xde rdx 0xffff80002ccfc000 rcx 0x100040600080100 rax 0xfffffd807a5af0e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xacd67a548013b773 r11 0x1368b40596c88c25 r12 0x1c r13 0xfffffd807a5af000 r14 0xfffffd80719dccd8 r15 0xffff800001497f40 rip 0xffffffff8260475e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a5409e0 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=28905 pid=29087 tcnt=2 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=0xffff80002a7c2538,0xffff80002a7c3738 process=0xffff800035d14018 user=0xffff80003a53c000, vmspace=0xfffffd8069cce9f0 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40946 294334 86441 0 2 0 syz-executor 40946 45632 86441 0 2 0x4000000 syz-executor 10871 302728 16417 0 2 0 syz-executor 10871 77131 16417 0 3 0x4000080 fsleep syz-executor 29087 472035 46502 0 2 0 syz-executor *29087 28905 46502 0 7 0x4000000 syz-executor 22703 14039 87205 0 2 0 syz-executor 22703 343366 87205 0 3 0x4000080 fsleep syz-executor 75630 368005 40071 0 2 0 syz-executor 75630 231853 40071 0 2 0x4000000 syz-executor 75630 413091 40071 0 2 0x4000000 syz-executor 927 63728 79567 0 2 0 syz-executor 927 356098 79567 0 3 0x4000080 ttyout syz-executor 71627 439137 0 0 3 0x14200 acct acct 88674 387481 11076 0 2 0 syz-executor 88674 88144 11076 0 3 0x4000080 fifor syz-executor 88674 282466 11076 0 3 0x4000080 fsleep syz-executor 40071 42264 72783 0 2 0xc82 syz-executor 11076 268999 72783 0 2 0xc82 syz-executor 86441 396726 72783 0 2 0xc82 syz-executor 79567 398157 72783 0 2 0xc82 syz-executor 87205 116629 72783 0 2 0xc82 syz-executor 16417 342511 72783 0 2 0xc82 syz-executor 46502 182516 72783 0 3 0x82 nanoslp syz-executor 19698 274881 72783 0 2 0xc82 syz-executor 72783 159738 45303 0 3 0x82 kqread syz-executor 45303 388685 90198 0 3 0x10008a sigsusp ksh 90198 163953 96287 0 3 0x98 kqread sshd-session 96287 7908 81557 0 3 0x92 kqread sshd-session 71008 425700 1 0 3 0x100083 ttyin getty 81557 209665 1 0 3 0x88 kqread sshd 63659 50332 76265 73 3 0x1100090 kqread syslogd 76265 429123 1 0 3 0x100082 sbwait syslogd 97564 294329 1 0 3 0x100080 kqread resolvd 17153 506531 54175 77 3 0x100092 kqread dhcpleased 43981 23263 54175 77 3 0x100092 kqread dhcpleased 54175 87205 1 0 3 0x80 kqread dhcpleased 86493 37102 0 0 3 0x14200 bored smr 3453 404873 0 0 2 0x14200 zerothread 13967 6499 0 0 3 0x14200 aiodoned aiodoned 21660 425849 0 0 3 0x14200 syncer update 91051 440011 0 0 3 0x14200 cleaner cleaner 17348 183862 0 0 3 0x14200 reaper reaper 19872 101909 0 0 3 0x14200 pgdaemon pagedaemon 91478 294983 0 0 3 0x14200 bored viomb 15588 8153 0 0 3 0x40014200 acpi0 acpi0 929 242799 0 0 3 0x14200 bored softnet3 5908 376015 0 0 3 0x14200 bored softnet2 82566 59348 0 0 3 0x14200 bored softnet1 40863 448575 0 0 3 0x14200 bored softnet0 75623 151635 0 0 3 0x14200 bored systqmp 26417 188017 0 0 3 0x14200 bored systq 3433 238269 0 0 3 0x40014200 tmoslp softclock 51090 195323 0 0 3 0x40014200 idle0 1 456575 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 10173 11058K 11517K 166960K 11338 0 pcb 17 12K 12K 166960K 23 0 rtable 240 9K 9K 166960K 380 0 pf 30 12K 13K 166960K 34 0 ifaddr 43 7K 7K 166960K 46 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 18K 166960K 35 0 ioctlops 0 0K 4K 166960K 104 0 iov 1 0K 4K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1399 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 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 189 0 proc 60 59K 108K 166960K 481 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 7 0 in_multi 99 7K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 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 354 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 225 151K 168K 166960K 3231 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 39 78K 92K 166960K 1226 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 11 0K 2K 166960K 28 0 temp 34 8674K 8738K 166960K 3915 0 kqueue 13 20K 26K 166960K 30 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 42 0 38 1 0 1 1 0 8 0 rtentry 136 116 0 7 4 0 4 4 0 8 0 unpcb 144 67 0 50 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 21 0 16 1 0 1 1 0 8 0 arp 88 19 0 1 1 0 1 1 0 8 0 inpcb 328 99 0 90 2 0 2 2 0 8 1 nd6 104 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 0 1 1 0 8 1 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfrule 1344 65 0 0 6 0 6 6 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 460 0 8 29 0 29 29 0 8 0 art_table 32 462 0 8 4 0 4 4 0 8 0 art_node 16 114 0 16 1 0 1 1 0 8 0 semapl 112 2 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1635 0 132 95 0 95 95 0 8 0 ffsino 248 1635 0 132 95 0 95 95 0 8 0 nchpl 144 1888 0 207 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 1743 0 0 36 0 36 36 0 8 0 vnodes 216 1743 0 0 97 0 97 97 0 8 0 namei 1024 5519 0 5519 2 0 2 2 0 8 2 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 5921 0 5921 3 0 3 3 1 8 3 plimitpl 152 32 0 13 1 0 1 1 0 8 0 sigapl 424 471 0 424 6 0 6 6 0 8 0 knotepl 120 4963 0 4916 9 0 9 9 0 8 6 kqueuepl 184 31 0 22 1 0 1 1 0 8 0 pipepl 296 166 0 139 3 0 3 3 0 8 0 fdescpl 440 454 0 424 5 0 5 5 0 8 1 filepl 120 1679 0 1464 7 0 7 7 0 8 0 lockfpl 104 67 0 65 1 0 1 1 0 8 0 lockfspl 48 18 0 16 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 31 0 14 1 0 1 1 0 8 0 ucredpl 104 90 0 79 1 0 1 1 0 8 0 zombiepl 144 425 0 424 1 0 1 1 0 8 0 processpl 1160 471 0 424 4 0 4 4 0 8 0 procpl 656 545 0 489 5 0 5 5 0 8 0 sockpl 528 208 0 178 3 0 3 3 0 8 0 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2492 0 2441 13 0 13 13 0 8 6 mcl2k 2048 273 0 268 1 0 1 1 0 8 0 mtagpl 96 8 0 4 1 0 1 1 0 8 0 mbufpl 256 4523 0 4370 10 0 10 10 0 8 0 bufpl 280 2301 0 117 156 0 156 156 0 8 0 anonpl 24 107498 0 104353 32 0 32 32 0 187 11 amapchunkpl 152 9517 0 9037 24 0 24 24 0 158 5 amappl16 200 2106 0 2083 5 0 5 5 0 8 3 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 0 1 1 0 8 1 amappl12 168 1073 0 1043 2 0 2 2 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 25 0 25 1 0 1 1 0 8 1 amappl9 144 250 0 250 1 0 1 1 0 8 1 amappl8 136 18 0 17 1 0 1 1 0 8 0 amappl7 128 102 0 92 1 0 1 1 0 8 0 amappl6 120 171 0 168 1 0 1 1 0 8 0 amappl5 112 114 0 107 1 0 1 1 0 8 0 amappl4 104 294 0 277 1 0 1 1 0 8 0 amappl3 96 1501 0 1393 3 0 3 3 0 8 0 amappl2 88 619 0 567 2 0 2 2 0 8 0 amappl1 80 8289 0 7732 14 0 14 14 0 8 1 amappl 88 2578 0 2417 4 0 4 4 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 7 0 7 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 454 0 424 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 454 0 424 1 0 1 1 0 8 0 vmmpekpl 168 5422 0 5394 2 0 2 2 0 8 0 vmmpepl 168 35813 0 33945 87 0 87 87 0 357 3 vmsppl 360 453 0 424 4 0 4 4 0 8 1 rwobjpl 32 14613 0 12037 21 0 21 21 0 8 0 pdppl 4096 915 0 848 93 22 71 79 0 8 4 pvpl 32 234737 0 225031 97 0 97 97 0 265 18 pmappl 216 453 0 424 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 256 0 22 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003a540c18,0,ffff80003a540b90,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014e7300,ffff80003a540cc0,ffff80003a540c18,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd807a5af200,ffff800010fdb8d0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdb8d0,fffffd807a5af200,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdb8d0,0,ffff80003a540e68,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7c2ce8,3,ffff80003a540f60,808,ffff80003a541010) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7c2ce8,ffff80003a5410c0,ffff80003a541010) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003a5410c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a5410c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41fd5d0030, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd80719dccd8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003a540c18,0,ffff80003a540b90,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014e7300,ffff80003a540cc0,ffff80003a540c18,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd807a5af200,ffff800010fdb8d0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdb8d0,fffffd807a5af200,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdb8d0,0,ffff80003a540e68,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7c2ce8,3,ffff80003a540f60,808,ffff80003a541010) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7c2ce8,ffff80003a5410c0,ffff80003a541010) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003a5410c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a5410c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41fd5d0030, count: -10