panic() at panic+0x15c sys/kern/subr_prf.c:207 pageflttrap() at pageflttrap+0x3eb kerntrap(ffff800016b29490) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800016519000,fffffd803d24bd98,10,ffff80000005b900,ffff800016b296f8) at alltraps_kern_meltdown+0x7b 0(b,ffff800016b29658,83,ffff800016b296f8,0,b) at 0 rt_match(fffffd803d819c88,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd803d819c88,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff800016b297d0,fffffd80258d0120,fffffd803d819c08) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd803d819c08,fffffd80258d0100) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd8004823330,4,0,fffffd80258d0100,0,ffff800016b313d8) at udp_usrreq+0x560 sys_connect(ffff800016b313d8,ffff800016b29958,ffff800016b299a0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff800016b29a20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(0,0,fffffffffffffed2,0,3,26e1eb9010) at Xsyscall+0x128 end of kernel end trace frame: 0x292f8297c0, 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(ffff800016b29490) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800016519000,fffffd803d24bd98,10,ffff80000005b900,ffff800016b296f8) at alltraps_kern_meltdown+0x7b 0(b,ffff800016b29658,83,ffff800016b296f8,0,b) at 0 rt_match(fffffd803d819c88,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd803d819c88,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff800016b297d0,fffffd80258d0120,fffffd803d819c08) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd803d819c08,fffffd80258d0100) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd8004823330,4,0,fffffd80258d0100,0,ffff800016b313d8) at udp_usrreq+0x560 sys_connect(ffff800016b313d8,ffff800016b29958,ffff800016b299a0) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff800016b29a20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(0,0,fffffffffffffed2,0,3,26e1eb9010) at Xsyscall+0x128 end of kernel end trace frame: 0x292f8297c0, count: -13 ddb> show registers rdi 0xffffffff81ed85e7 db_enter+0x17 rsi 0xd596 __ALIGN_SIZE+0xc596 rbp 0xffff800016b29300 rbx 0xffff800016b293b0 rdx 0xd597 __ALIGN_SIZE+0xc597 rcx 0xffff800016519000 rax 0xffff800016519000 r8 0xffff800016b292c0 r9 0x1 r10 0xffff800000b0e480 r11 0xd39c3571cf638685 r12 0x3000000008 r13 0xffff800016b29310 r14 0x100 r15 0x1 rip 0xffffffff81ed85e8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800016b292f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=130309 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800016b30018,0xffffffff8257fc40 process=0xffff8000148a3458 user=0xffff800016b24000, vmspace=0xfffffd803f014110 estcpu=36, cpticks=4, pctcpu=0.0 user=0, sys=4, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43657 453577 51517 0 2 0 syz-executor.1 *43657 130309 51517 0 7 0x4000000 syz-executor.1 98687 391470 79986 0 2 0 syz-executor.0 98687 81166 79986 0 2 0x4000080 syz-executor.0 86522 238481 0 0 3 0x14200 acct acct 51517 73675 61110 0 2 0x482 syz-executor.1 79986 504647 61110 0 2 0x482 syz-executor.0 67325 215777 1 0 3 0x100083 ttyopn getty 91343 59079 0 0 3 0x14200 bored sosplice 61110 123892 79529 0 3 0x82 kqread syz-fuzzer 61110 367950 79529 0 2 0x4000482 syz-fuzzer 61110 499230 79529 0 3 0x4000082 thrsleep syz-fuzzer 61110 248098 79529 0 3 0x4000082 thrsleep syz-fuzzer 61110 146900 79529 0 3 0x4000082 thrsleep syz-fuzzer 61110 153728 79529 0 3 0x4000082 thrsleep syz-fuzzer 61110 113173 79529 0 3 0x4000082 thrsleep syz-fuzzer 61110 490911 79529 0 3 0x4000082 thrsleep syz-fuzzer 79529 375095 99288 0 3 0x10008a pause ksh 99288 86972 68026 0 3 0x92 select sshd 68026 471770 1 0 3 0x80 select sshd 16273 386289 77415 73 3 0x100090 kqread syslogd 77415 178209 1 0 3 0x100082 netio syslogd 42511 172502 1 77 3 0x100090 poll dhclient 65694 447867 1 0 3 0x80 poll dhclient 57905 424579 0 0 2 0x14200 zerothread 98231 195274 0 0 3 0x14200 aiodoned aiodoned 75003 424169 0 0 3 0x14200 syncer update 7041 439651 0 0 3 0x14200 cleaner cleaner 70986 429007 0 0 3 0x14200 reaper reaper 80627 321440 0 0 3 0x14200 pgdaemon pagedaemon 1624 410750 0 0 3 0x14200 bored crynlk 34675 509657 0 0 3 0x14200 bored crypto 87863 386892 0 0 3 0x40014200 acpi0 acpi0 16600 39954 0 0 3 0x14200 bored softnet 77912 126457 0 0 3 0x14200 bored systqmp 72041 219236 0 0 3 0x14200 bored systq 18400 444312 0 0 3 0x40014200 bored softclock 22504 221870 0 0 3 0x40014200 idle0 75901 156937 0 0 3 0x14200 bored smr 1 424086 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 9569 6379K 7530K 78643K 21967 0 0 pcb 13 10K 12K 78643K 664 0 0 rtable 98 12K 13K 78643K 2031 0 0 ifaddr 78 18K 22K 78643K 609 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 204 0 0 iov 0 0K 40K 78643K 1011 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1204 76K 77K 78643K 4367 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 37 0 0 VM map 2 0K 0K 78643K 24 0 0 sem 12 1K 1K 78643K 470 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 3237 0 0 sigio 0 0K 0K 78643K 66 0 0 proc 50 38K 55K 78643K 1339 0 0 subproc 32 2K 2K 78643K 306 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 154 0 0 in_multi 13 0K 2K 78643K 295 0 0 ether_multi 1 0K 0K 78643K 10 0 0 mrt 0 0K 0K 78643K 28 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 787 0 0 pfkey data 0 0K 4K 78643K 4 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 111 22K 31K 78643K 8904 0 0 UVM aobj 130 4K 4K 78643K 151 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 690 0 0 NDP 19 0K 1K 78643K 190 0 0 temp 219 3536K 4171K 78643K 103972 0 0 kqueue 0 0K 0K 78643K 18 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 70 0 65 1 0 1 1 0 8 0 rtpcb 80 207 0 205 1 0 1 1 0 8 0 rtentry 112 339 0 308 2 0 2 2 0 8 0 unpcb 120 4264 0 4248 6 4 2 2 0 8 1 syncache 264 17 0 17 10 9 1 1 0 8 1 tcpqe 32 5938 0 5938 6 6 0 2 0 8 0 tcpcb 544 1177 0 1173 15 14 1 15 0 8 0 ipq 40 35 0 35 10 9 1 1 0 8 1 ipqe 40 195 0 195 10 9 1 1 0 8 1 inpcb 280 3314 0 3306 20 18 2 9 0 8 1 rttmr 72 11 0 10 1 0 1 1 0 8 0 nd6 48 41 0 41 2 2 0 1 0 8 0 pkpcb 40 10 0 10 4 4 0 1 0 8 0 ppxss 1128 74 0 74 16 15 1 1 0 8 1 art_heap8 4096 6 0 5 5 4 1 3 0 8 0 art_heap4 256 1381 0 1216 28 16 12 17 0 8 0 art_table 32 1387 0 1221 4 1 3 3 0 8 0 art_node 16 332 0 304 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 462 0 452 1 0 1 1 0 8 0 shmpl 112 149 0 21 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6643 0 5243 46 0 46 46 0 8 0 ffsino 240 6643 0 5243 83 0 83 83 0 8 0 nchpl 144 11403 0 9771 61 0 61 61 0 8 0 uvmvnodes 72 8188 0 0 149 0 149 149 0 8 0 vnodes 208 8188 0 0 431 0 431 431 0 8 0 namei 1024 40634 0 40634 8 7 1 1 0 8 1 vmpool 520 22 0 22 7 7 0 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 50348 0 50348 26 24 2 7 0 8 2 plimitpl 152 291 0 284 1 0 1 1 0 8 0 sigapl 432 3361 0 3347 2 0 2 2 0 8 0 futexpl 56 86355 0 86355 7 6 1 1 0 8 1 knotepl 112 828 0 809 1 0 1 1 0 8 0 kqueuepl 104 953 0 951 4 3 1 4 0 8 0 pipepl 112 1834 0 1815 6 5 1 2 0 8 0 fdescpl 424 3362 0 3347 2 0 2 2 0 8 0 filepl 120 29538 0 29440 18 14 4 10 0 8 0 lockfpl 104 1590 0 1589 1 0 1 1 0 8 0 lockfspl 48 487 0 486 1 0 1 1 0 8 0 sessionpl 112 34 0 24 1 0 1 1 0 8 0 pgrppl 48 68 0 58 1 0 1 1 0 8 0 ucredpl 96 3425 0 3418 1 0 1 1 0 8 0 zombiepl 144 3352 0 3352 3 2 1 1 0 8 1 processpl 864 3383 0 3352 4 0 4 4 0 8 0 procpl 632 7370 0 7330 4 0 4 4 0 8 0 sosppl 128 68 0 68 14 13 1 1 0 8 1 sockpl 384 7818 0 7792 29 24 5 14 0 8 2 mcl64k 65536 2071 0 2071 122 92 30 33 0 8 30 mcl16k 16384 37 0 37 14 13 1 1 0 8 1 mcl12k 12288 90 0 90 11 10 1 1 0 8 1 mcl9k 9216 60 0 60 13 13 0 1 0 8 0 mcl8k 8192 165 0 165 9 8 1 1 0 8 1 mcl4k 4096 388 0 388 8 7 1 1 0 8 1 mcl2k2 2112 39 0 39 12 11 1 1 0 8 1 mcl2k 2048 61648 0 61603 38 31 7 28 0 8 0 mtagpl 80 153 0 153 3 2 1 1 0 8 1 mbufpl 256 128215 0 128155 140 125 15 38 0 8 8 bufpl 256 24507 0 16322 514 2 512 513 0 8 0 anonpl 16 443860 0 428244 173 93 80 93 0 62 10 amapchunkpl 152 19825 0 19718 89 81 8 19 0 158 2 amappl16 192 21245 0 20317 202 147 55 69 0 8 8 amappl15 184 279 0 278 3 2 1 1 0 8 0 amappl14 176 812 0 809 2 1 1 1 0 8 0 amappl13 168 683 0 681 4 3 1 1 0 8 0 amappl12 160 59 0 58 2 1 1 1 0 8 0 amappl11 152 94 0 82 1 0 1 1 0 8 0 amappl10 144 643 0 640 1 0 1 1 0 8 0 amappl9 136 1383 0 1377 1 0 1 1 0 8 0 amappl8 128 976 0 943 2 0 2 2 0 8 0 amappl7 120 740 0 731 1 0 1 1 0 8 0 amappl6 112 94 0 76 1 0 1 1 0 8 0 amappl5 104 390 0 380 1 0 1 1 0 8 0 amappl4 96 3448 0 3417 1 0 1 1 0 8 0 amappl3 88 1087 0 1082 1 0 1 1 0 8 0 amappl2 80 26081 0 26005 4 2 2 3 0 8 0 amappl1 72 70045 0 69621 28 19 9 20 0 8 0 amappl 80 7874 0 7837 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 64 150 0 21 3 0 3 3 0 8 0 uaddrrnd 24 3384 0 3347 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3384 0 3347 1 0 1 1 0 8 0 vmmpekpl 168 23724 0 23693 2 0 2 2 0 8 0 vmmpepl 168 413112 0 411014 297 195 102 127 0 357 9 vmsppl 272 3361 0 3347 4 3 1 2 0 8 0 pdppl 4096 6774 0 6738 6 1 5 6 0 8 0 pvpl 32 1274817 0 1255962 527 303 224 299 0 265 62 pmappl 200 3383 0 3369 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 999 0 325 21 0 21 21 0 8 0