uvm_fault(0xffffffff839ae0a8, 0xffff8000016020aa, 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 *191256 36617 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4eba30,0,ffff80003a4eb9a0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015ffd00,ffff80003a4ebad8,ffff80003a4eba30,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806c848800,ffff800010fdc460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc460,fffffd806c848800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc460,0,ffff80003a4ebc88,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c02b0,5,ffff80003a4ebd80,808,ffff80003a4ebe20) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c02b0,ffff80003a4ebed0,ffff80003a4ebe20) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4ebed0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4ebed0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd12d385a1e0, 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(0xffffffff839ae0a8, 0xffff8000016020aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4eba30,0,ffff80003a4eb9a0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015ffd00,ffff80003a4ebad8,ffff80003a4eba30,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806c848800,ffff800010fdc460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc460,fffffd806c848800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc460,0,ffff80003a4ebc88,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c02b0,5,ffff80003a4ebd80,808,ffff80003a4ebe20) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c02b0,ffff80003a4ebed0,ffff80003a4ebe20) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4ebed0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4ebed0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd12d385a1e0, count: -10 ddb> show registers rdi 0xffff80002a8b4000 rsi 0x941 rbp 0xffff80003a4eb880 rbx 0xde rdx 0xffff80002a8b4000 rcx 0xffff800001601fc0 rax 0xfffffd806c8484e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x5a11a8797781b471 r11 0x382a18eeb5e356c4 r12 0x18 r13 0xfffffd806c848400 r14 0xfffffd807bdcb678 r15 0xffff8000002a2058 rip 0xffffffff8208d5a4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a4eb800 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=191256 pid=36617 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=0xffff80002f0c0018,0xffff80002f0c0a88 process=0xffff80002a756d08 user=0xffff80003a4e6000, vmspace=0xfffffd806cb33460 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40189 191049 2998 0 2 0 syz-executor 40189 266788 2998 0 2 0x4000000 syz-executor 40952 233561 23665 0 2 0x10 syz-executor 40952 502446 23665 0 3 0x4000090 fsleep syz-executor 20630 43195 32321 0 2 0 syz-executor 20630 343587 32321 0 3 0x4000080 rest syz-executor 23407 175654 92947 0 2 0 syz-executor 23407 361509 92947 0 3 0x4000080 fsleep syz-executor 36617 416920 14134 0 2 0 syz-executor *36617 191256 14134 0 7 0x4000000 syz-executor 19759 80430 73602 0 2 0 syz-executor 19759 390299 73602 0 3 0x4000080 fsleep syz-executor 60181 57951 49204 0 2 0x2 ndp 49204 125047 56159 0 3 0x10008a sigsusp sh 53752 215125 45010 0 2 0x2 syz-executor 32321 340045 45010 0 3 0x82 nanoslp syz-executor 2998 212830 45010 0 3 0x82 nanoslp syz-executor 56159 520655 45010 0 3 0x82 wait syz-executor 23665 114154 45010 0 3 0x82 nanoslp syz-executor 73602 360765 45010 0 3 0x82 nanoslp syz-executor 92947 30882 45010 0 3 0x82 nanoslp syz-executor 14134 141489 45010 0 3 0x82 nanoslp syz-executor 45010 498811 89065 0 3 0x82 kqread syz-executor 89065 433793 45313 0 3 0x10008a sigsusp ksh 45313 234466 65568 0 3 0x98 kqread sshd-session 65568 97803 92287 0 3 0x92 kqread sshd-session 1376 136529 1 0 3 0x100083 ttyin getty 92287 9523 1 0 3 0x88 kqread sshd 76007 470266 24122 73 3 0x1100090 kqread syslogd 24122 36397 1 0 3 0x100082 sbwait syslogd 11526 54575 1 0 3 0x100080 kqread resolvd 7914 182725 68813 77 3 0x100092 kqread dhcpleased 62714 404310 68813 77 3 0x100092 kqread dhcpleased 68813 269684 1 0 3 0x80 kqread dhcpleased 90320 252990 0 0 3 0x14200 bored smr 96830 287302 0 0 2 0x14200 zerothread 91030 501459 0 0 3 0x14200 aiodoned aiodoned 56893 243522 0 0 3 0x14200 syncer update 70743 333741 0 0 3 0x14200 cleaner cleaner 47682 273146 0 0 3 0x14200 reaper reaper 89762 138464 0 0 3 0x14200 pgdaemon pagedaemon 11386 120083 0 0 3 0x14200 bored viomb 70031 119805 0 0 3 0x40014200 acpi0 acpi0 70639 349372 0 0 3 0x14200 bored softnet0 38806 205503 0 0 3 0x14200 smrbar systqmp 34707 523890 0 0 3 0x14200 bored systq 51044 426719 0 0 3 0x40014200 tmoslp softclock 28755 32680 0 0 3 0x40014200 idle0 1 13799 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 11028 12103K 12119K 166960K 12112 0 pcb 21 12K 12K 166960K 25 0 rtable 244 8K 8K 166960K 363 0 pf 30 12K 12K 166960K 30 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 33 0 ioctlops 0 0K 2K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1287 81K 81K 166960K 1352 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 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 136 0 proc 57 58K 83K 166960K 495 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 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 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 358 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 212 159K 167K 166960K 2992 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 95K 166960K 1206 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 34 9066K 9128K 166960K 3721 0 kqueue 13 20K 20K 166960K 22 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 36 0 31 1 0 1 1 0 8 0 rtentry 136 111 0 1 4 0 4 4 0 8 0 unpcb 144 32 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 9 0 4 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 66 0 51 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 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 4 1 0 1 1 0 8 0 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 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 1552 0 92 92 0 92 92 0 8 0 ffsino 256 1552 0 92 92 0 92 92 0 8 0 nchpl 144 1743 0 50 63 0 63 63 0 8 0 vnodes 216 1633 0 0 91 0 91 91 0 8 0 namei 1024 5041 0 5040 2 0 2 2 0 8 1 kstatmem 264 23 0 0 2 0 2 2 0 8 0 scxspl 216 5741 0 5741 3 0 3 3 1 8 3 plimitpl 152 28 0 10 1 0 1 1 0 8 0 sigapl 424 423 0 380 6 0 6 6 0 8 0 knotepl 120 2292 0 2245 2 0 2 2 0 8 0 kqueuepl 184 18 0 9 1 0 1 1 0 8 0 pipepl 304 117 0 90 3 0 3 3 0 8 0 fdescpl 448 410 0 380 5 0 5 5 0 8 0 filepl 120 1382 0 1164 7 0 7 7 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 64 0 52 1 0 1 1 0 8 0 zombiepl 144 380 0 380 1 0 1 1 0 8 1 processpl 1152 423 0 380 4 0 4 4 0 8 0 procpl 664 429 0 380 5 0 5 5 0 8 0 sockpl 552 134 0 98 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2435 0 2380 12 0 12 12 0 8 3 mcl2k 2048 107 0 103 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4004 0 3842 11 0 11 11 0 8 0 bufpl 280 2214 0 102 151 0 151 151 0 8 0 anonpl 24 100884 0 97841 23 0 23 23 0 187 4 amapchunkpl 152 8268 0 7838 18 0 18 18 0 158 0 amappl16 200 2010 0 1997 5 0 5 5 0 8 4 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 402 0 400 1 0 1 1 0 8 0 amappl13 176 108 0 98 1 0 1 1 0 8 0 amappl12 168 649 0 621 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 71 0 61 1 0 1 1 0 8 0 amappl9 144 278 0 278 1 0 1 1 0 8 1 amappl8 136 102 0 101 1 0 1 1 0 8 0 amappl7 128 149 0 137 1 0 1 1 0 8 0 amappl6 120 157 0 155 1 0 1 1 0 8 0 amappl5 112 89 0 82 1 0 1 1 0 8 0 amappl4 104 251 0 237 1 0 1 1 0 8 0 amappl3 96 1364 0 1264 3 0 3 3 0 8 0 amappl2 88 485 0 431 2 0 2 2 0 8 0 amappl1 80 8829 0 8275 13 0 13 13 0 8 0 amappl 88 2325 0 2179 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 410 0 380 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 410 0 380 1 0 1 1 0 8 0 vmmpekpl 168 5034 0 5004 2 0 2 2 0 8 0 vmmpepl 168 34633 0 32912 79 0 79 79 0 357 2 vmsppl 368 409 0 380 4 0 4 4 0 8 0 rwobjpl 40 13281 0 12362 11 0 11 11 0 8 1 pdppl 4096 826 0 760 94 14 80 80 0 8 14 pvpl 32 215600 0 207064 73 0 73 73 0 265 2 pmappl 216 409 0 380 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 353 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4eba30,0,ffff80003a4eb9a0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015ffd00,ffff80003a4ebad8,ffff80003a4eba30,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806c848800,ffff800010fdc460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc460,fffffd806c848800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc460,0,ffff80003a4ebc88,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c02b0,5,ffff80003a4ebd80,808,ffff80003a4ebe20) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c02b0,ffff80003a4ebed0,ffff80003a4ebe20) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4ebed0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4ebed0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd12d385a1e0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd807bdcb678) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4eba30,0,ffff80003a4eb9a0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015ffd00,ffff80003a4ebad8,ffff80003a4eba30,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd806c848800,ffff800010fdc460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fdc460,fffffd806c848800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdc460,0,ffff80003a4ebc88,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c02b0,5,ffff80003a4ebd80,808,ffff80003a4ebe20) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c02b0,ffff80003a4ebed0,ffff80003a4ebe20) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4ebed0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4ebed0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd12d385a1e0, count: -10