uvm_fault(0xffffffff8390df08, 0xffff80000172108a, 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 *121541 82675 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800033909a90,0,ffff800033909a00,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fa400,ffff800033909b38,ffff800033909a90,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8065ba2b00,ffff8000016155e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000016155e8,fffffd8065ba2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016155e8,0,ffff800033909ce8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a11c568,4,ffff800033909de0,808,ffff800033909e80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a11c568,ffff800033909f30,ffff800033909e80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033909f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033909f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcaf85cdd1e0, 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(0xffffffff8390df08, 0xffff80000172108a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800033909a90,0,ffff800033909a00,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fa400,ffff800033909b38,ffff800033909a90,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8065ba2b00,ffff8000016155e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000016155e8,fffffd8065ba2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016155e8,0,ffff800033909ce8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a11c568,4,ffff800033909de0,808,ffff800033909e80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a11c568,ffff800033909f30,ffff800033909e80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033909f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033909f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcaf85cdd1e0, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff8000339098e0 rbx 0xde rdx 0 rcx 0xffff800001720fa0 rax 0xfffffd8065ba2de0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x41a3e1091b27d19c r11 0x92cb6962a972fed3 r12 0x52 r13 0xfffffd8065ba2d00 r14 0xfffffd8070faf670 r15 0xffff8000002a2058 rip 0xffffffff8233b054 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800033909860 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=121541 pid=82675 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=0xffff80003a11d260,0xffff80003a11cfd8 process=0xffff8000314f9698 user=0xffff800033904000, vmspace=0xfffffd8070e29b90 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 82675 60775 94152 0 2 0 syz-executor *82675 121541 94152 0 7 0x4000000 syz-executor 22295 348551 14839 0 2 0 syz-executor 22295 46146 14839 0 3 0x4000080 fsleep syz-executor 59698 466894 14417 0 2 0 syz-executor 59698 457690 14417 0 3 0x4000080 kqsel syz-executor 59698 157814 14417 0 3 0x4000080 kqsel syz-executor 72713 451567 30680 0 2 0x1 syz-executor 72713 432485 30680 0 3 0x4000080 fsleep syz-executor 69656 374500 60810 0 3 0x80 nanoslp syz-executor 69656 501051 60810 0 3 0x4000080 rest syz-executor 69656 273925 60810 0 3 0x4000080 fsleep syz-executor 72772 354564 44449 0 3 0x3000 suspend syz-executor 72772 48429 44449 0 2 0x4081000 syz-executor 72772 484790 44449 0 3 0x4081000 inode syz-executor 50779 293708 0 0 3 0x14200 acct acct 63692 57913 0 0 3 0x14280 nfsidl nfsio 84574 492310 0 0 3 0x14280 nfsidl nfsio 72182 332408 0 0 3 0x14280 nfsidl nfsio 24568 310729 0 0 3 0x14280 nfsidl nfsio 49764 255927 0 0 3 0x14280 nfsidl nfsio 75886 362098 0 0 3 0x14280 nfsidl nfsio 79343 144396 0 0 3 0x14280 nfsidl nfsio 25181 216745 0 0 3 0x14280 nfsidl nfsio 10402 152590 0 0 3 0x14280 nfsidl nfsio 78025 73554 0 0 3 0x14280 nfsidl nfsio 85271 96414 0 0 3 0x14280 nfsidl nfsio 82624 2661 0 0 3 0x14280 nfsidl nfsio 64743 32564 0 0 3 0x14280 nfsidl nfsio 58433 173550 0 0 3 0x14280 nfsidl nfsio 62502 102657 0 0 3 0x14280 nfsidl nfsio 26399 188859 0 0 3 0x14280 nfsidl nfsio 83827 247093 0 0 3 0x14280 nfsidl nfsio 19035 98816 0 0 3 0x14280 nfsidl nfsio 95764 22791 0 0 3 0x14280 nfsidl nfsio 94270 85528 0 0 3 0x14280 nfsidl nfsio 94152 289080 92457 0 2 0xc82 syz-executor 60810 262978 92457 0 3 0x82 nanoslp syz-executor 14839 275556 92457 0 3 0x82 nanoslp syz-executor 73075 244903 92457 0 2 0x2 syz-executor 44449 337414 92457 0 3 0x82 wait syz-executor 30680 518890 92457 0 3 0x82 nanoslp syz-executor 27635 244939 92457 0 3 0x82 nanoslp syz-executor 14417 68165 92457 0 3 0x82 nanoslp syz-executor 92457 72550 33098 0 3 0x82 kqread syz-executor 33098 171120 74087 0 3 0x10008a sigsusp ksh 74087 338256 28672 0 3 0x98 kqread sshd-session 28672 379816 11104 0 3 0x92 kqread sshd-session 98772 99271 1 0 3 0x100083 ttyin getty 11104 288354 1 0 3 0x88 kqread sshd 54752 58369 47570 73 3 0x1100090 kqread syslogd 47570 426119 1 0 3 0x100082 sbwait syslogd 75871 444338 1 0 3 0x100080 kqread resolvd 1877 156318 5473 77 3 0x100092 kqread dhcpleased 33079 280967 5473 77 3 0x100092 kqread dhcpleased 5473 1612 1 0 3 0x80 kqread dhcpleased 15204 135309 0 0 3 0x14200 bored smr 87635 322658 0 0 2 0x14200 zerothread 67346 168411 0 0 3 0x14200 aiodoned aiodoned 65627 156614 0 0 3 0x14200 syncer update 68690 203559 0 0 3 0x14200 cleaner cleaner 93034 250479 0 0 3 0x14200 reaper reaper 46725 490890 0 0 3 0x14200 pgdaemon pagedaemon 82686 221032 0 0 3 0x14200 bored viomb 37609 133916 0 0 3 0x40014200 acpi0 acpi0 14246 179155 0 0 3 0x14200 bored softnet0 50116 364945 0 0 3 0x14200 bored systqmp 17509 126791 0 0 3 0x14200 bored systq 51362 239201 0 0 3 0x40014200 tmoslp softclock 33497 430592 0 0 3 0x40014200 idle0 1 220983 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11046 12125K 13126K 166960K 14321 0 pcb 17 13K 13K 166960K 203 0 rtable 273 11K 11K 166960K 502 0 pf 33 13K 18K 166960K 135 0 ifaddr 44 8K 8K 166960K 93 0 ifgroup 50 2K 2K 166960K 145 0 sysctl 4 1K 9K 166960K 13 0 counters 33 17K 18K 166960K 90 0 ioctlops 0 0K 4K 166960K 259 0 iov 0 0K 16K 166960K 361 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1450 91K 92K 166960K 2513 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 26 33K 33K 166960K 43 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 1127 0 sigio 0 0K 0K 166960K 19 0 proc 60 59K 91K 166960K 576 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 2 0K 0K 166960K 171 0 in_multi 102 7K 7K 166960K 137 0 ether_multi 1 0K 0K 166960K 6 0 mrt 2 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 475 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 239 143K 170K 166960K 12496 0 UVM aobj 137 16K 18K 166960K 143 0 pinsyscall 38 76K 94K 166960K 2195 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 51 0 NDP 11 0K 2K 166960K 62 0 temp 78 8680K 8933K 166960K 39009 0 kqueue 13 20K 30K 166960K 195 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 120 123 0 118 1 0 1 1 0 8 0 rtentry 136 139 0 27 4 0 4 4 0 8 0 unpcb 144 812 0 795 4 0 4 4 0 8 3 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpqe 32 5 0 5 1 1 0 1 0 8 0 tcpcb 736 461 0 457 13 6 7 7 0 8 6 arp 96 21 0 1 1 0 1 1 0 8 0 ipq 40 15 0 9 1 0 1 1 0 8 0 ipqe 40 21 0 15 1 0 1 1 0 8 0 inpcb 328 993 0 984 12 5 7 7 0 8 5 ip6q 72 8 0 5 2 1 1 1 0 8 0 ip6af 40 14 0 11 2 1 1 1 0 8 0 nd6 112 32 0 3 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 48 0 48 2 1 1 1 0 8 1 pppxif 1384 4 0 4 2 1 1 1 0 8 1 pfstscr 40 2 0 2 2 1 1 1 0 8 1 pfrktable 1344 3 0 3 1 1 0 1 0 8 0 pftag 88 7 0 4 1 0 1 1 0 8 0 pfstkey 128 4 0 4 2 1 1 1 0 8 1 pfstate 384 2 0 2 2 1 1 1 0 8 1 pfrule 1360 10 0 9 1 0 1 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 583 0 125 30 0 30 30 0 8 0 art_table 40 586 0 125 5 0 5 5 0 8 0 art_node 32 138 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 1 0 1 1 0 8 0 semupl 112 3 0 3 2 1 1 1 0 8 1 semapl 112 37 0 13 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 28 0 11 3 0 3 3 0 8 0 dino2pl 256 3616 0 2117 95 0 95 95 0 8 0 ffsino 256 3616 0 2117 95 0 95 95 0 8 0 nchpl 144 5201 0 3514 64 0 64 64 0 8 0 rtmask 32 16 0 16 2 1 1 1 0 8 1 vnodes 216 4314 0 0 240 0 240 240 0 8 0 namei 1024 18140 0 18139 3 2 1 2 0 8 0 vcpupl 3904 6 0 0 1 0 1 1 0 8 0 vmpool 808 8 0 2 1 0 1 1 0 8 0 kstatmem 264 92 0 70 2 0 2 2 0 8 0 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 18564 0 18564 10 2 8 8 1 8 8 plimitpl 152 407 0 390 1 0 1 1 0 8 0 sigapl 424 1436 0 1373 8 0 8 8 0 8 0 knotepl 120 80209 0 80162 39 29 10 23 0 8 7 kqueuepl 184 337 0 326 3 0 3 3 0 8 2 pipepl 304 190 0 162 3 0 3 3 0 8 0 fdescpl 448 1400 0 1371 5 1 4 5 0 8 0 filepl 120 8900 0 8680 14 3 11 11 0 8 3 lockfpl 104 418 0 415 2 0 2 2 0 8 1 lockfspl 48 181 0 178 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 102 0 86 1 0 1 1 0 8 0 ucredpl 104 1732 0 1719 1 0 1 1 0 8 0 zombiepl 144 1869 0 1867 1 0 1 1 0 8 0 processpl 1152 1436 0 1373 5 0 5 5 0 8 0 procpl 664 3135 0 3063 8 0 8 8 0 8 1 sosppl 176 14 0 14 2 1 1 1 0 8 1 sockpl 552 1968 0 1937 13 5 8 8 0 8 5 mcl64k 65536 60 0 57 2 1 1 1 0 8 0 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 23 0 23 2 1 1 1 0 8 1 mcl4k 4096 3911 0 3857 15 7 8 15 0 8 0 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 1423 0 1415 2 0 2 2 0 8 0 mtagpl 96 100 0 77 1 0 1 1 0 8 0 mbufpl 256 14976 0 14800 22 5 17 17 0 8 3 bufpl 280 5835 0 123 408 0 408 408 0 8 0 anonpl 24 213856 0 208337 78 24 54 57 0 187 19 amapchunkpl 152 41224 0 40715 35 2 33 33 0 158 11 amappl16 200 3555 0 3373 42 31 11 15 0 8 1 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 18 0 18 2 1 1 1 0 8 1 amappl13 176 427 0 426 1 0 1 1 0 8 0 amappl12 168 1733 0 1695 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 45 0 35 1 0 1 1 0 8 0 amappl9 144 291 0 291 1 1 0 1 0 8 0 amappl8 136 34 0 33 1 0 1 1 0 8 0 amappl7 128 80 0 79 1 0 1 1 0 8 0 amappl6 120 260 0 248 1 0 1 1 0 8 0 amappl5 112 66 0 58 1 0 1 1 0 8 0 amappl4 104 386 0 360 1 0 1 1 0 8 0 amappl3 96 7169 0 7073 3 0 3 3 0 8 0 amappl2 88 1518 0 1446 2 0 2 2 0 8 0 amappl1 80 12809 0 12269 13 1 12 13 0 8 0 amappl 88 11611 0 11440 5 0 5 5 0 92 0 uvmvnodes 80 133 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 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 72 142 0 6 3 0 3 3 0 8 0 uaddrrnd 24 1400 0 1371 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1400 0 1371 1 0 1 1 0 8 0 vmmpekpl 168 12361 0 12327 2 0 2 2 0 8 0 vmmpepl 168 92738 0 90781 101 9 92 92 0 357 4 vmsppl 368 1399 0 1371 4 1 3 4 0 8 0 rwobjpl 40 25480 0 24200 16 2 14 14 0 8 0 pdppl 4096 2823 0 2752 110 37 73 81 0 8 2 pvpl 32 609646 0 598931 159 41 118 141 0 265 12 pmappl 216 1407 0 1373 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 412 0 64 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800033909a90,0,ffff800033909a00,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fa400,ffff800033909b38,ffff800033909a90,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8065ba2b00,ffff8000016155e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000016155e8,fffffd8065ba2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016155e8,0,ffff800033909ce8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a11c568,4,ffff800033909de0,808,ffff800033909e80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a11c568,ffff800033909f30,ffff800033909e80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033909f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033909f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcaf85cdd1e0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070faf670) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800033909a90,0,ffff800033909a00,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015fa400,ffff800033909b38,ffff800033909a90,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8065ba2b00,ffff8000016155e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000016155e8,fffffd8065ba2b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000016155e8,0,ffff800033909ce8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003a11c568,4,ffff800033909de0,808,ffff800033909e80) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003a11c568,ffff800033909f30,ffff800033909e80) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800033909f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800033909f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcaf85cdd1e0, count: -10