uvm_fault(0xffffffff83a6ddf0, 0xffff80000161008a, 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 *254816 67645 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9175f0,0,ffff80003c917560,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e700,ffff80003c917698,ffff80003c9175f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806df1aa00,ffff8000015f8010) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8010,fffffd806df1aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8010,0,ffff80003c917848,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7567d0,4,ffff80003c917940,808,ffff80003c9179e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7567d0,ffff80003c917a90,ffff80003c9179e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c917a90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917a90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19aa69b8380, 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(0xffffffff83a6ddf0, 0xffff80000161008a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9175f0,0,ffff80003c917560,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e700,ffff80003c917698,ffff80003c9175f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806df1aa00,ffff8000015f8010) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8010,fffffd806df1aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8010,0,ffff80003c917848,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7567d0,4,ffff80003c917940,808,ffff80003c9179e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7567d0,ffff80003c917a90,ffff80003c9179e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c917a90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917a90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19aa69b8380, count: -10 ddb> show registers rdi 0xffff80002ccd0000 rsi 0x920 rbp 0xffff80003c917440 rbx 0xde rdx 0xffff80002ccd0000 rcx 0xffff80000160ffa0 rax 0xfffffd806df1afe0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x4663e105c9e14b3e r11 0x906c32ffb2a7b54d r12 0x1c r13 0xfffffd806df1af00 r14 0xfffffd806d859238 r15 0xffff8000002a2058 rip 0xffffffff818eccd4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9173c0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=254816 pid=67645 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=0xffff80002a7ae020,0xffff80002a795250 process=0xffff8000ffff9218 user=0xffff80003c912000, vmspace=0xfffffd806ce4ed00 estcpu=0, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15830 308616 27075 0 2 0 syz-executor 15830 355454 27075 0 2 0x4000000 syz-executor 27193 30652 76170 0 2 0 syz-executor 27193 112418 76170 0 3 0x4000080 fsleep syz-executor 67645 84210 79177 0 2 0 syz-executor *67645 254816 79177 0 7 0x4000000 syz-executor 54960 287373 51578 0 2 0 syz-executor 54960 523313 51578 0 3 0x4000080 fsleep syz-executor 85850 375943 12704 0 2 0 syz-executor 85850 29347 12704 0 3 0x4000080 fsleep syz-executor 49184 28466 42582 0 2 0 syz-executor 49184 13763 42582 0 2 0x4000000 syz-executor 49184 222997 42582 0 2 0x4000000 syz-executor 38244 233156 73943 0 2 0 syz-executor 38244 340508 73943 0 3 0x4000080 fsleep syz-executor 50908 28960 53801 0 2 0x2 ifconfig 53801 157950 72087 0 3 0x10008a sigsusp sh 51578 424181 45598 0 2 0xc82 syz-executor 76170 75806 45598 0 2 0xc82 syz-executor 27075 128820 45598 0 2 0xc82 syz-executor 72087 224275 45598 0 3 0x82 wait syz-executor 73943 330305 45598 0 3 0x82 nanoslp syz-executor 12704 416336 45598 0 2 0xc82 syz-executor 79177 410478 45598 0 2 0xc82 syz-executor 42582 50846 45598 0 2 0xc82 syz-executor 45598 328669 74428 0 3 0x82 kqread syz-executor 74428 255369 62417 0 3 0x10008a sigsusp ksh 62417 481251 49191 0 3 0x98 kqread sshd-session 49191 91344 73457 0 3 0x92 kqread sshd-session 22676 309419 1 0 3 0x100083 ttyin getty 73457 504309 1 0 3 0x88 kqread sshd 53872 199997 66395 73 3 0x1100090 kqread syslogd 66395 266307 1 0 3 0x100082 sbwait syslogd 17899 5182 1 0 3 0x100080 kqread resolvd 28694 194915 69430 77 3 0x100092 kqread dhcpleased 96905 460514 69430 77 3 0x100092 kqread dhcpleased 69430 420334 1 0 3 0x80 kqread dhcpleased 57218 216764 0 0 3 0x14200 bored smr 78252 509525 0 0 2 0x14200 zerothread 95677 72858 0 0 3 0x14200 aiodoned aiodoned 27563 344999 0 0 3 0x14200 syncer update 84975 327944 0 0 3 0x14200 cleaner cleaner 32220 410501 0 0 3 0x14200 reaper reaper 24551 53446 0 0 3 0x14200 pgdaemon pagedaemon 86938 449505 0 0 3 0x14200 bored viomb 42619 202358 0 0 3 0x40014200 acpi0 acpi0 95471 243604 0 0 3 0x14200 bored softnet0 12944 474029 0 0 3 0x14200 smrbar systqmp 25828 110180 0 0 3 0x14200 bored systq 82540 173308 0 0 3 0x40014200 tmoslp softclock 17734 356006 0 0 3 0x40014200 idle0 1 432328 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 11027 12102K 12119K 166960K 12112 0 pcb 17 12K 12K 166960K 17 0 rtable 224 7K 7K 166960K 342 0 pf 30 12K 12K 166960K 30 0 ifaddr 39 6K 6K 166960K 41 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 28 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1290 81K 81K 166960K 1355 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 19 69K 97K 166960K 132 0 proc 57 58K 124K 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 in_multi 88 6K 6K 166960K 88 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 359 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 211 151K 160K 166960K 2853 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 40 80K 96K 166960K 1212 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 25 1K 1K 166960K 25 0 temp 34 9062K 9126K 166960K 3757 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 37 0 32 1 0 1 1 0 8 0 rtentry 136 101 0 1 4 0 4 4 0 8 0 unpcb 144 33 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 7 0 3 1 0 1 1 0 8 0 arp 96 16 0 0 1 0 1 1 0 8 0 inpcb 328 56 0 48 2 0 2 2 0 8 1 nd6 112 21 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 256 408 0 0 26 0 26 26 0 8 0 art_table 40 410 0 0 5 0 5 5 0 8 0 art_node 32 101 0 4 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 1556 0 94 92 0 92 92 0 8 0 ffsino 256 1556 0 94 92 0 92 92 0 8 0 nchpl 144 1748 0 53 63 0 63 63 0 8 0 vnodes 216 1639 0 0 92 0 92 92 0 8 0 namei 1024 5043 0 5041 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5784 0 5784 4 0 4 4 1 8 4 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 426 0 382 6 0 6 6 0 8 0 knotepl 120 2830 0 2783 2 0 2 2 0 8 0 kqueuepl 184 18 0 9 1 0 1 1 0 8 0 pipepl 304 119 0 92 3 0 3 3 0 8 0 fdescpl 448 413 0 382 5 0 5 5 0 8 1 filepl 120 1382 0 1169 7 0 7 7 0 8 0 lockfpl 104 8 0 4 1 0 1 1 0 8 0 lockfspl 48 6 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 63 0 52 1 0 1 1 0 8 0 zombiepl 144 382 0 382 1 0 1 1 0 8 1 processpl 1152 426 0 382 4 0 4 4 0 8 0 procpl 664 435 0 383 5 0 5 5 0 8 0 sockpl 552 126 0 96 3 0 3 3 0 8 0 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2447 0 2393 14 0 14 14 0 8 5 mcl2k 2048 103 0 103 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4032 0 3903 14 0 14 14 0 8 5 bufpl 280 2214 0 102 151 0 151 151 0 8 0 anonpl 24 91876 0 88806 22 0 22 22 0 187 2 amapchunkpl 152 7990 0 7540 18 0 18 18 0 158 0 amappl16 200 1584 0 1570 5 0 5 5 0 8 4 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 430 0 428 1 0 1 1 0 8 0 amappl13 176 111 0 101 1 0 1 1 0 8 0 amappl12 168 645 0 615 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 261 0 261 1 0 1 1 0 8 1 amappl8 136 123 0 122 1 0 1 1 0 8 0 amappl7 128 137 0 126 1 0 1 1 0 8 0 amappl6 120 150 0 147 1 0 1 1 0 8 0 amappl5 112 104 0 96 1 0 1 1 0 8 0 amappl4 104 250 0 236 1 0 1 1 0 8 0 amappl3 96 1367 0 1262 3 0 3 3 0 8 0 amappl2 88 494 0 443 2 0 2 2 0 8 0 amappl1 80 9105 0 8547 13 0 13 13 0 8 0 amappl 88 2181 0 2032 4 0 4 4 0 92 0 uvmvnodes 80 95 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 24 413 0 382 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 413 0 382 1 0 1 1 0 8 0 vmmpekpl 168 4989 0 4960 2 0 2 2 0 8 0 vmmpepl 168 34716 0 32949 77 0 77 77 0 357 0 vmsppl 368 412 0 382 4 0 4 4 0 8 0 rwobjpl 40 12998 0 12077 11 0 11 11 0 8 1 pdppl 4096 832 0 764 100 18 82 82 0 8 14 pvpl 32 207342 0 198783 70 0 70 70 0 265 0 pmappl 216 412 0 382 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 362 0 18 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9175f0,0,ffff80003c917560,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e700,ffff80003c917698,ffff80003c9175f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806df1aa00,ffff8000015f8010) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8010,fffffd806df1aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8010,0,ffff80003c917848,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7567d0,4,ffff80003c917940,808,ffff80003c9179e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7567d0,ffff80003c917a90,ffff80003c9179e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c917a90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917a90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19aa69b8380, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d859238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9175f0,0,ffff80003c917560,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e700,ffff80003c917698,ffff80003c9175f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806df1aa00,ffff8000015f8010) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8010,fffffd806df1aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8010,0,ffff80003c917848,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7567d0,4,ffff80003c917940,808,ffff80003c9179e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7567d0,ffff80003c917a90,ffff80003c9179e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c917a90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c917a90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19aa69b8380, count: -10