uvm_fault(0xffffffff838e3a38, 0xffff8000014b202a, 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 *213459 83124 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c9db448,0,ffff80003c9db3c0,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000149d700,ffff80003c9db4f0,ffff80003c9db448,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd80096a0800,ffff8000014138c0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff8000014138c0,fffffd80096a0800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff8000014138c0,0,ffff80003c9db698,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c543c60,6,ffff80003c9db790,808,ffff80003c9db840) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c543c60,ffff80003c9db8f0,ffff80003c9db840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c9db8f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9db8f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12a17de31a0, 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(0xffffffff838e3a38, 0xffff8000014b202a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c9db448,0,ffff80003c9db3c0,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000149d700,ffff80003c9db4f0,ffff80003c9db448,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd80096a0800,ffff8000014138c0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff8000014138c0,fffffd80096a0800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff8000014138c0,0,ffff80003c9db698,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c543c60,6,ffff80003c9db790,808,ffff80003c9db840) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c543c60,ffff80003c9db8f0,ffff80003c9db840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c9db8f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9db8f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12a17de31a0, count: -10 ddb> show registers rdi 0xffff80002f102000 rsi 0x8bf rbp 0xffff80003c9db290 rbx 0xde rdx 0xffff80002f102000 rcx 0x100040600080100 rax 0xfffffd80096a0ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x4da2b5c10cb0d549 r11 0xcea8f5f843e8d5b8 r12 0x20 r13 0xfffffd80096a0c00 r14 0xfffffd806827e700 r15 0xffff8000014b1f40 rip 0xffffffff82539d7e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9db210 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=213459 pid=83124 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=70, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c94f4b8,0xffff80002a7adc58 process=0xffff8000365144a0 user=0xffff80003c9d6000, vmspace=0xfffffd806c278b50 estcpu=20, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 56898 347845 81847 0 2 0 syz-executor 83124 87412 49042 0 2 0 syz-executor *83124 213459 49042 0 7 0x4000000 syz-executor 26454 295538 29742 0 2 0 syz-executor 26454 325768 29742 0 3 0x4000080 fsleep syz-executor 77017 43791 6863 0 2 0 syz-executor 77017 403938 6863 0 3 0x4000080 bpf syz-executor 77017 292378 6863 0 3 0x4000000 smrbar syz-executor 95628 523316 45985 0 2 0 syz-executor 95628 500750 45985 0 3 0x4000080 fsleep syz-executor 95628 385785 45985 0 3 0x4000080 fsleep syz-executor 35221 157593 93499 0 2 0 syz-executor 35221 406463 93499 0 3 0x4000080 kqsel syz-executor 35221 142487 93499 0 3 0x4000080 fsleep syz-executor 55786 437129 0 0 3 0x14280 nfsidl nfsio 61991 169283 0 0 3 0x14280 nfsidl nfsio 5688 256859 0 0 3 0x14280 nfsidl nfsio 59199 523107 0 0 3 0x14280 nfsidl nfsio 70020 175921 0 0 3 0x14280 nfsidl nfsio 6784 69498 0 0 3 0x14280 nfsidl nfsio 84296 2503 0 0 3 0x14280 nfsidl nfsio 72394 240072 0 0 3 0x14280 nfsidl nfsio 70669 393668 0 0 3 0x14280 nfsidl nfsio 25208 219143 0 0 3 0x14280 nfsidl nfsio 31675 297054 0 0 3 0x14280 nfsidl nfsio 47769 314246 0 0 3 0x14280 nfsidl nfsio 46018 34656 0 0 3 0x14280 nfsidl nfsio 5342 305320 0 0 3 0x14280 nfsidl nfsio 88274 291730 0 0 3 0x14280 nfsidl nfsio 30288 18870 0 0 3 0x14280 nfsidl nfsio 73625 349295 0 0 3 0x14280 nfsidl nfsio 56734 88474 0 0 3 0x14280 nfsidl nfsio 66940 160065 0 0 3 0x14280 nfsidl nfsio 88977 25767 0 0 3 0x14280 nfsidl nfsio 16379 218127 0 0 3 0x14200 bored sosplice 81847 450891 50922 0 2 0xc82 syz-executor 17902 33058 50922 0 2 0x2 syz-executor 45985 282644 50922 0 3 0x82 nanoslp syz-executor 29742 117216 50922 0 2 0xc82 syz-executor 96734 406181 50922 0 3 0x82 nanoslp syz-executor 49042 356498 50922 0 2 0xc82 syz-executor 93499 378265 50922 0 2 0xc82 syz-executor 6863 433793 50922 0 2 0xc82 syz-executor 50922 21869 79595 0 3 0x82 kqread syz-executor 79595 196133 7947 0 3 0x10008a sigsusp ksh 7947 212847 32779 0 3 0x98 kqread sshd-session 32779 300776 51106 0 3 0x92 kqread sshd-session 55686 2559 1 0 3 0x100083 ttyin getty 51106 324743 1 0 3 0x88 kqread sshd 36390 177622 27031 73 3 0x1100090 kqread syslogd 27031 359941 1 0 3 0x100082 sbwait syslogd 62652 240342 1 0 3 0x100080 kqread resolvd 65030 52707 41963 77 3 0x100092 kqread dhcpleased 66984 268639 41963 77 3 0x100092 kqread dhcpleased 41963 22362 1 0 3 0x80 kqread dhcpleased 60149 511342 0 0 3 0x14200 bored smr 53780 339324 0 0 2 0x14200 zerothread 82040 497249 0 0 3 0x14200 aiodoned aiodoned 43272 279320 0 0 3 0x14200 syncer update 24837 35102 0 0 3 0x14200 cleaner cleaner 2552 22624 0 0 3 0x14200 reaper reaper 41877 431020 0 0 3 0x14200 pgdaemon pagedaemon 91102 216071 0 0 3 0x14200 bored viomb 80408 181520 0 0 3 0x40014200 acpi0 acpi0 80115 48303 0 0 3 0x14200 bored softnet3 92818 205398 0 0 3 0x14200 bored softnet2 84954 258709 0 0 3 0x14200 bored softnet1 9001 433690 0 0 3 0x14200 bored softnet0 86397 370020 0 0 3 0x14200 bored systqmp 58891 153889 0 0 3 0x14200 bored systq 30731 355495 0 0 3 0x40014200 tmoslp softclock 14891 24198 0 0 3 0x40014200 idle0 1 304305 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 10190 11174K 11577K 166960K 11646 0 pcb 18 14K 16K 166960K 118 0 rtable 225 8K 8K 166960K 396 0 pf 33 13K 14K 166960K 47 0 ifaddr 42 7K 8K 166960K 55 0 ifgroup 52 2K 2K 166960K 69 0 sysctl 1 1K 9K 166960K 5 0 counters 35 18K 18K 166960K 43 0 ioctlops 0 0K 4K 166960K 143 0 iov 0 0K 12K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1373 86K 87K 166960K 1507 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 302 0 sigio 0 0K 0K 166960K 6 0 proc 63 67K 124K 166960K 494 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 18 0 in_multi 96 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 363 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 213 150K 161K 166960K 4234 0 UVM aobj 7 2K 4K 166960K 9 0 pinsyscall 38 76K 96K 166960K 1332 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 12 0K 2K 166960K 34 0 temp 41 8675K 8740K 166960K 5912 0 kqueue 13 20K 30K 166960K 50 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 56 0 52 1 0 1 1 0 8 0 rtentry 136 115 0 15 4 0 4 4 0 8 0 unpcb 144 183 0 165 4 3 1 4 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 44 0 39 1 0 1 1 0 8 0 arp 88 18 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 328 288 0 279 8 5 3 8 0 8 0 nd6 104 24 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 9 0 6 1 0 1 1 0 8 0 pppxif 1384 2 0 2 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1344 2 0 1 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 459 0 47 29 1 28 29 0 8 0 art_table 32 461 0 47 4 0 4 4 0 8 0 art_node 16 112 0 22 1 0 1 1 0 8 0 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1844 0 345 95 0 95 95 0 8 0 ffsino 248 1844 0 345 95 0 95 95 0 8 0 nchpl 144 2254 0 573 63 0 63 63 0 8 0 uvmvnodes 80 2027 0 0 42 0 42 42 0 8 0 vnodes 216 2027 0 0 113 0 113 113 0 8 0 namei 1024 7411 0 7411 3 2 1 2 0 8 1 kstatmem 264 36 0 12 2 0 2 2 0 8 0 scxspl 216 7335 0 7335 8 7 1 8 1 8 1 plimitpl 152 119 0 103 1 0 1 1 0 8 0 sigapl 424 602 0 536 8 0 8 8 0 8 0 knotepl 120 9487 0 9440 12 9 3 12 0 8 0 kqueuepl 184 78 0 66 2 0 2 2 0 8 0 pipepl 296 146 0 119 5 2 3 5 0 8 0 fdescpl 440 565 0 536 5 1 4 5 0 8 0 filepl 120 2887 0 2666 11 3 8 11 0 8 0 lockfpl 104 113 0 108 1 0 1 1 0 8 0 lockfspl 48 32 0 28 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 104 248 0 237 1 0 1 1 0 8 0 zombiepl 144 537 0 536 1 0 1 1 0 8 0 processpl 1160 602 0 536 5 0 5 5 0 8 0 procpl 656 865 0 791 8 0 8 8 0 8 0 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 528 530 0 499 8 5 3 8 0 8 0 mcl64k 65536 6 0 6 1 1 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 7 0 7 1 1 0 1 0 8 0 mcl4k 4096 2639 0 2584 16 8 8 16 0 8 0 mcl2k 2048 359 0 358 2 1 1 2 0 8 0 mtagpl 96 11 0 7 1 0 1 1 0 8 0 mbufpl 256 5956 0 5807 16 4 12 16 0 8 0 bufpl 280 2526 0 120 172 0 172 172 0 8 0 anonpl 24 113549 0 110435 32 10 22 32 0 187 0 amapchunkpl 152 12841 0 12398 24 5 19 24 0 158 0 amappl16 200 2208 0 2180 6 4 2 6 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 131 0 121 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1172 0 1143 2 0 2 2 0 8 0 amappl11 160 50 0 40 1 0 1 1 0 8 0 amappl10 152 10 0 9 1 0 1 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 32 0 31 1 0 1 1 0 8 0 amappl7 128 102 0 92 1 0 1 1 0 8 0 amappl6 120 174 0 171 1 0 1 1 0 8 0 amappl5 112 110 0 104 1 0 1 1 0 8 0 amappl4 104 299 0 285 1 0 1 1 0 8 0 amappl3 96 2257 0 2154 4 0 4 4 0 8 0 amappl2 88 621 0 566 2 0 2 2 0 8 0 amappl1 80 8690 0 8140 14 0 14 14 0 8 0 amappl 88 3564 0 3413 5 0 5 5 0 92 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 128 253 0 253 1 1 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 8 0 2 1 0 1 1 0 8 0 uaddrrnd 24 565 0 536 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 565 0 536 1 0 1 1 0 8 0 vmmpekpl 168 6238 0 6206 2 0 2 2 0 8 0 vmmpepl 168 42400 0 40581 88 6 82 88 0 357 0 vmsppl 360 564 0 536 4 1 3 4 0 8 0 rwobjpl 32 16074 0 13211 24 0 24 24 0 8 0 pdppl 4096 1137 0 1072 103 38 65 83 0 8 0 pvpl 32 272403 0 263518 94 16 78 94 0 265 0 pmappl 216 564 0 536 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 277 0 60 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c9db448,0,ffff80003c9db3c0,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000149d700,ffff80003c9db4f0,ffff80003c9db448,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd80096a0800,ffff8000014138c0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff8000014138c0,fffffd80096a0800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff8000014138c0,0,ffff80003c9db698,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c543c60,6,ffff80003c9db790,808,ffff80003c9db840) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c543c60,ffff80003c9db8f0,ffff80003c9db840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c9db8f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9db8f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12a17de31a0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806827e700) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c9db448,0,ffff80003c9db3c0,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000149d700,ffff80003c9db4f0,ffff80003c9db448,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd80096a0800,ffff8000014138c0) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff8000014138c0,fffffd80096a0800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff8000014138c0,0,ffff80003c9db698,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c543c60,6,ffff80003c9db790,808,ffff80003c9db840) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c543c60,ffff80003c9db8f0,ffff80003c9db840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c9db8f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9db8f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12a17de31a0, count: -10