panic() at panic+0x15c sys/kern/subr_prf.c:207 pageflttrap() at pageflttrap+0x3eb kerntrap(ffff80001699cab0) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800015968000,fffffd802e956008,10,ffff80000005b580,ffff80001699cd18) at alltraps_kern_meltdown+0x7b 0(b,ffff80001699cc78,83,ffff80001699cd18,0,b) at 0 rt_match(fffffd80370272b0,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd80370272b0,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff80001699cdf0,fffffd802b939320,fffffd8037027230) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd8037027230,fffffd802b939300) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd802d0be7a0,4,0,fffffd802b939300,0,ffff800014f32508) at udp_usrreq+0x560 sys_connect(ffff800014f32508,ffff80001699cf78,ffff80001699cfc0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff80001699d040) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,f0e7e4bf010) at Xsyscall+0x128 end of kernel end trace frame: 0xf10ebd17970, count: 2 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 attempt to execute user address 0x0 in supervisor mode ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 pageflttrap() at pageflttrap+0x3eb kerntrap(ffff80001699cab0) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800015968000,fffffd802e956008,10,ffff80000005b580,ffff80001699cd18) at alltraps_kern_meltdown+0x7b 0(b,ffff80001699cc78,83,ffff80001699cd18,0,b) at 0 rt_match(fffffd80370272b0,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd80370272b0,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff80001699cdf0,fffffd802b939320,fffffd8037027230) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd8037027230,fffffd802b939300) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd802d0be7a0,4,0,fffffd802b939300,0,ffff800014f32508) at udp_usrreq+0x560 sys_connect(ffff800014f32508,ffff80001699cf78,ffff80001699cfc0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff80001699d040) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,f0e7e4bf010) at Xsyscall+0x128 end of kernel end trace frame: 0xf10ebd17970, count: -13 ddb> show registers rdi 0xffffffff812b7167 db_enter+0x17 rsi 0xdbd1 __ALIGN_SIZE+0xcbd1 rbp 0xffff80001699c920 rbx 0xffff80001699c9d0 rdx 0xdbd2 __ALIGN_SIZE+0xcbd2 rcx 0xffff800015968000 rax 0xffff800015968000 r8 0xffff80001699c8e0 r9 0x1 r10 0xffff800000a6cac0 r11 0x37cfaeaf962d919d r12 0x3000000008 r13 0xffff80001699c930 r14 0x100 r15 0x1 rip 0xffffffff812b7168 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001699c910 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) pid=384381 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800014f33b40,0xffff800014f32c80 process=0xffff8000148a2018 user=0xffff800016998000, vmspace=0xfffffd803f013dd0 estcpu=28, cpticks=4, pctcpu=0.1 user=0, sys=4, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 87552 472308 30193 0 2 0 syz-executor.0 *87552 384381 30193 0 7 0x4000000 syz-executor.0 96512 165339 7347 0 2 0 syz-executor.1 96512 114146 7347 0 3 0x4000080 poll syz-executor.1 96512 231092 7347 0 2 0x4000080 syz-executor.1 96512 196206 7347 0 3 0x4000080 fsleep syz-executor.1 8168 98892 0 0 3 0x14200 acct acct 7347 441743 46253 0 2 0x482 syz-executor.1 30193 3905 46253 0 2 0x482 syz-executor.0 70481 324920 1 0 3 0x100083 ttyin getty 11181 308409 0 0 3 0x14200 bored sosplice 46253 29232 99901 0 3 0x82 thrsleep syz-fuzzer 46253 11203 99901 0 3 0x4000082 thrsleep syz-fuzzer 46253 318541 99901 0 3 0x4000082 kqread syz-fuzzer 46253 43960 99901 0 3 0x4000082 thrsleep syz-fuzzer 46253 304310 99901 0 3 0x4000082 thrsleep syz-fuzzer 46253 129228 99901 0 3 0x4000082 thrsleep syz-fuzzer 46253 120361 99901 0 3 0x4000082 thrsleep syz-fuzzer 99901 515184 95152 0 3 0x10008a pause ksh 95152 333062 3341 0 3 0x92 select sshd 3341 53706 1 0 3 0x80 select sshd 84672 107757 69136 73 3 0x100090 kqread syslogd 69136 327569 1 0 3 0x100082 netio syslogd 54210 318567 1 77 3 0x100090 poll dhclient 25421 45169 1 0 3 0x80 poll dhclient 63023 265439 0 0 2 0x14200 zerothread 58730 223555 0 0 3 0x14200 aiodoned aiodoned 59504 30930 0 0 3 0x14200 syncer update 16913 368625 0 0 3 0x14200 cleaner cleaner 25309 368809 0 0 3 0x14200 reaper reaper 54602 117148 0 0 3 0x14200 pgdaemon pagedaemon 18905 71629 0 0 3 0x14200 bored crynlk 84852 467921 0 0 3 0x14200 bored crypto 5771 261164 0 0 3 0x40014200 acpi0 acpi0 74078 377096 0 0 3 0x14200 bored softnet 98429 325080 0 0 3 0x14200 bored systqmp 45173 72943 0 0 3 0x14200 bored systq 885 9133 0 0 3 0x40014200 bored softclock 529 442658 0 0 3 0x40014200 idle0 18366 246480 0 0 3 0x14200 bored smr 1 16294 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 Kern Lim devbuf 9530 6349K 7024K 78643K 12617 0 0 pcb 13 8K 9K 78643K 531 0 0 rtable 104 8K 8K 78643K 833 0 0 ifaddr 65 14K 15K 78643K 214 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 74 0 0 iov 0 0K 16K 78643K 164 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 77K 78643K 1953 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 14 0 0 VM map 14 3K 3K 78643K 17 0 0 sem 12 0K 1K 78643K 270 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 847 0 0 sigio 0 0K 0K 78643K 59 0 0 proc 50 46K 63K 78643K 673 0 0 subproc 32 2K 2K 78643K 136 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 63 0 0 in_multi 20 1K 2K 78643K 125 0 0 ether_multi 1 0K 0K 78643K 14 0 0 mrt 0 0K 0K 78643K 7 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 120 530K 530K 78643K 120 0 0 exec 0 0K 1K 78643K 335 0 0 pfkey data 0 0K 4K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 121 135K 135K 78643K 2969 0 0 UVM aobj 48 2K 2K 78643K 50 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 457 0 0 NDP 14 0K 0K 78643K 64 0 0 temp 183 3535K 3606K 78643K 13461 0 0 kqueue 0 0K 0K 78643K 6 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 39 0 32 1 0 1 1 0 8 0 rtpcb 80 113 0 111 1 0 1 1 0 8 0 rtentry 112 151 0 112 2 0 2 2 0 8 0 unpcb 120 423 0 405 1 0 1 1 0 8 0 syncache 264 7 0 7 3 3 0 1 0 8 0 tcpqe 32 195 0 195 2 2 0 1 0 8 0 tcpcb 544 654 0 650 2 1 1 2 0 8 0 inpcb 280 1599 0 1589 5 3 2 3 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 48 14 0 13 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 16 0 16 3 3 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 538 0 348 17 4 13 15 0 8 0 art_table 32 539 0 348 2 0 2 2 0 8 0 art_node 16 150 0 114 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 33 1 0 1 1 0 8 0 semapl 112 268 0 258 1 0 1 1 0 8 0 shmpl 112 48 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2637 0 1241 46 0 46 46 0 8 0 ffsino 240 2637 0 1241 83 0 83 83 0 8 0 nchpl 144 4199 0 2595 60 0 60 60 0 8 0 uvmvnodes 72 3226 0 0 59 0 59 59 0 8 0 vnodes 208 3226 0 0 170 0 170 170 0 8 0 namei 1024 12593 0 12593 2 1 1 1 0 8 1 vcpupl 1984 13 0 1 2 0 2 2 0 8 0 vmpool 520 15 0 3 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 1 1 1 0 8 1 scxspl 192 12031 0 12031 14 13 1 7 0 8 1 plimitpl 152 73 0 66 1 0 1 1 0 8 0 sigapl 432 1001 0 987 2 0 2 2 0 8 0 futexpl 56 21117 0 21116 2 1 1 1 0 8 0 knotepl 112 336 0 317 2 1 1 2 0 8 0 kqueuepl 104 285 0 283 1 0 1 1 0 8 0 pipepl 112 688 0 669 3 2 1 2 0 8 0 fdescpl 424 1002 0 987 2 0 2 2 0 8 0 filepl 120 7883 0 7776 7 3 4 5 0 8 0 lockfpl 104 307 0 306 1 0 1 1 0 8 0 lockfspl 48 101 0 100 1 0 1 1 0 8 0 sessionpl 112 24 0 14 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 928 0 921 1 0 1 1 0 8 0 zombiepl 144 987 0 987 3 2 1 1 0 8 1 processpl 864 1018 0 987 4 0 4 4 0 8 0 procpl 632 1972 0 1931 4 0 4 4 0 8 0 sosppl 128 7 0 7 2 1 1 1 0 8 1 sockpl 384 2157 0 2129 9 5 4 6 0 8 1 mcl64k 65536 70 0 70 1 1 0 1 0 8 0 mcl16k 16384 10 0 10 2 2 0 1 0 8 0 mcl12k 12288 23 0 23 3 3 0 1 0 8 0 mcl9k 9216 13 0 13 2 2 0 1 0 8 0 mcl8k 8192 23 0 23 2 1 1 1 0 8 1 mcl4k 4096 63 0 63 3 2 1 1 0 8 1 mcl2k2 2112 10 0 10 4 4 0 1 0 8 0 mcl2k 2048 67402 0 67360 18 12 6 15 0 8 0 mtagpl 80 52 0 50 3 2 1 1 0 8 0 mbufpl 256 113617 0 113531 17 9 8 11 0 8 0 bufpl 256 10454 0 4617 366 0 366 366 0 8 0 anonpl 16 134869 0 117474 97 15 82 85 0 62 10 amapchunkpl 152 5591 0 5476 19 13 6 18 0 158 0 amappl16 192 5686 0 4671 84 25 59 63 0 8 8 amappl15 184 10 0 9 1 0 1 1 0 8 0 amappl14 176 150 0 145 2 1 1 1 0 8 0 amappl13 168 146 0 146 1 1 0 1 0 8 0 amappl12 160 25 0 22 1 0 1 1 0 8 0 amappl11 152 62 0 51 1 0 1 1 0 8 0 amappl10 144 302 0 300 2 1 1 1 0 8 0 amappl9 136 846 0 840 1 0 1 1 0 8 0 amappl8 128 399 0 374 1 0 1 1 0 8 0 amappl7 120 353 0 346 1 0 1 1 0 8 0 amappl6 112 79 0 67 1 0 1 1 0 8 0 amappl5 104 202 0 191 1 0 1 1 0 8 0 amappl4 96 1373 0 1344 1 0 1 1 0 8 0 amappl3 88 141 0 136 1 0 1 1 0 8 0 amappl2 80 6803 0 6727 4 2 2 3 0 8 0 amappl1 72 28039 0 27606 27 18 9 20 0 8 0 amappl 80 2298 0 2250 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 49 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1017 0 987 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1017 0 987 1 0 1 1 0 8 0 vmmpekpl 168 10859 0 10825 2 0 2 2 0 8 0 vmmpepl 168 128355 0 126163 154 35 119 128 0 357 23 vmsppl 272 1001 0 987 2 1 1 2 0 8 0 pdppl 4096 2040 0 1992 9 2 7 7 0 8 1 pvpl 32 350312 0 330057 222 35 187 199 0 265 22 pmappl 200 1016 0 990 2 0 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 530 0 38 15 0 15 15 0 8 0