g C {/-%Sec_7e'2@7_f zg C {/-%Sec_7e'2@7_f zpanic: attempt to execute user address 0xba90209ffff in supervisor mode Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 650 84336 0 0 0x4000000 0 syz-executor.1 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(ffff8000179bd580) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800017b98000,fffffd802dd004d8,10,ffff80000005bee0,ffff8000179bd7e8) at alltraps_kern_meltdown+0x7b ba90209ffff(b,ffff8000179bd748,83,ffff8000179bd7e8,0,b) at 0xba90209ffff rt_match(fffffd803a649c88,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd803a649c88,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff8000179bd8c0,fffffd8036b04020,fffffd803a649c08) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd803a649c08,fffffd8036b04000) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd802c8e3310,4,0,fffffd8036b04000,0,ffff8000ffff8280) at udp_usrreq+0x560 sys_connect(ffff8000ffff8280,ffff8000179bda48,ffff8000179bda90) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff8000179bdb10) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,4000d9e3010) at Xsyscall+0x128 end of kernel end trace frame: 0x40242635560, 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 0xba90209ffff 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(ffff8000179bd580) at kerntrap+0xdb sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,ffff800017b98000,fffffd802dd004d8,10,ffff80000005bee0,ffff8000179bd7e8) at alltraps_kern_meltdown+0x7b ba90209ffff(b,ffff8000179bd748,83,ffff8000179bd7e8,0,b) at 0xba90209ffff rt_match(fffffd803a649c88,0,1,0) at rt_match+0xbe rt_clone sys/net/route.c:266 [inline] rt_match(fffffd803a649c88,0,1,0) at rt_match+0xbe sys/net/route.c:242 in_pcbselsrc(ffff8000179bd8c0,fffffd8036b04020,fffffd803a649c08) at in_pcbselsrc+0x219 sys/netinet/in_pcb.c:934 in_pcbconnect(fffffd803a649c08,fffffd8036b04000) at in_pcbconnect+0x107 sys/netinet/in_pcb.c:492 udp_usrreq(fffffd802c8e3310,4,0,fffffd8036b04000,0,ffff8000ffff8280) at udp_usrreq+0x560 sys_connect(ffff8000ffff8280,ffff8000179bda48,ffff8000179bda90) at sys_connect+0x3df sys/kern/uipc_syscalls.c:388 syscall(ffff8000179bdb10) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,fffffffffffffed2,0,3,4000d9e3010) at Xsyscall+0x128 end of kernel end trace frame: 0x40242635560, count: -13 ddb> show registers rdi 0xffffffff817cf0a7 db_enter+0x17 rsi 0x2766 __ALIGN_SIZE+0x1766 rbp 0xffff8000179bd3f0 rbx 0xffff8000179bd4a0 rdx 0x2767 __ALIGN_SIZE+0x1767 rcx 0xffff800017b98000 rax 0xffff800017b98000 r8 0xffff8000179bd3b0 r9 0x1 r10 0xffff800000a5ac40 r11 0xb94193a5bdeaba3a r12 0x3000000008 r13 0xffff8000179bd400 r14 0x100 r15 0x1 rip 0xffffffff817cf0a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000179bd3e0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=650 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8770,0xffffffff8258aaf8 process=0xffff8000ffff6370 user=0xffff8000179b8000, vmspace=0xfffffd803f014bb0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 84336 55786 79882 0 2 0 syz-executor.1 *84336 650 79882 0 7 0x4000000 syz-executor.1 79882 490509 90714 0 3 0x82 nanosleep syz-executor.1 6366 43563 90714 0 2 0x2 syz-executor.0 7307 17270 1 0 3 0x100083 ttyin getty 55626 334315 0 0 3 0x14200 acct acct 47759 149901 0 0 3 0x14200 bored sosplice 90714 471165 83866 0 3 0x82 thrsleep syz-fuzzer 90714 224450 83866 0 3 0x4000082 nanosleep syz-fuzzer 90714 14054 83866 0 3 0x4000082 thrsleep syz-fuzzer 90714 522471 83866 0 3 0x4000082 thrsleep syz-fuzzer 90714 325041 83866 0 3 0x4000082 kqread syz-fuzzer 90714 430704 83866 0 3 0x4000082 thrsleep syz-fuzzer 90714 486005 83866 0 3 0x4000082 thrsleep syz-fuzzer 90714 347562 83866 0 3 0x4000082 thrsleep syz-fuzzer 90714 279722 83866 0 3 0x4000082 thrsleep syz-fuzzer 83866 497115 11771 0 3 0x10008a pause ksh 11771 129787 38912 0 3 0x92 select sshd 38912 206783 1 0 3 0x80 select sshd 74493 277931 39835 73 3 0x100090 kqread syslogd 39835 314694 1 0 3 0x100082 netio syslogd 88218 25627 0 0 2 0x14200 zerothread 67506 190808 0 0 3 0x14200 aiodoned aiodoned 30345 277922 0 0 3 0x14200 syncer update 62929 148588 0 0 3 0x14200 cleaner cleaner 49121 270429 0 0 3 0x14200 reaper reaper 31785 242859 0 0 3 0x14200 pgdaemon pagedaemon 98143 27374 0 0 3 0x14200 bored crynlk 5290 394332 0 0 3 0x14200 bored crypto 99481 84955 0 0 3 0x40014200 acpi0 acpi0 62173 91131 0 0 3 0x14200 bored softnet 13336 517564 0 0 3 0x14200 bored systqmp 87089 477859 0 0 3 0x14200 bored systq 97322 374225 0 0 3 0x40014200 bored softclock 62725 250119 0 0 3 0x40014200 idle0 70558 356543 0 0 3 0x14200 bored smr 1 9333 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 9602 7160K 8326K 78643K 28474 0 0 pcb 21 13K 15K 78643K 2577 0 0 rtable 139 14K 15K 78643K 3524 0 0 ifaddr 105 27K 31K 78643K 1194 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 503 0 0 iov 0 0K 48K 78643K 2107 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1210 76K 77K 78643K 7986 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 98 0 0 VM map 105 26K 26K 78643K 131 0 0 sem 12 1K 1K 78643K 2792 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 9094 0 0 sigio 0 0K 0K 78643K 132 0 0 proc 44 30K 63K 78643K 2686 0 0 subproc 32 2K 2K 78643K 731 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 633 0 0 in_multi 20 1K 2K 78643K 808 0 0 ether_multi 1 0K 0K 78643K 75 0 0 mrt 1 0K 0K 78643K 37 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 1501 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 241 725K 727K 78643K 24434 0 0 UVM aobj 130 6K 6K 78643K 134 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 2550 0 0 NDP 22 0K 1K 78643K 380 0 0 temp 241 3545K 4185K 78643K 173524 0 0 kqueue 0 0K 0K 78643K 117 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 64 122 0 118 1 0 1 1 0 8 0 rtpcb 80 630 0 630 6 5 1 1 0 8 1 rtentry 112 726 0 674 2 0 2 2 0 8 0 unpcb 120 13140 0 13129 4 3 1 2 0 8 0 syncache 264 29 0 29 13 13 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 398 0 398 6 6 0 1 0 8 0 tcpcb 544 4645 0 4641 24 22 2 13 0 8 1 ipq 40 73 0 73 18 17 1 1 0 8 1 ipqe 40 2218 0 2218 18 17 1 1 0 8 1 inpcb 280 12671 0 12658 62 60 2 13 0 8 1 rttmr 72 14 0 12 2 1 1 1 0 8 0 ip6q 72 6 0 6 3 3 0 1 0 8 0 ip6af 40 18 0 18 3 3 0 1 0 8 0 nd6 48 106 0 106 6 5 1 1 0 8 1 pkpcb 40 26 0 26 10 10 0 1 0 8 0 swfcl 56 3 0 0 1 0 1 1 0 8 0 ppxss 1128 157 0 157 23 22 1 1 0 8 1 art_heap8 4096 21 0 17 14 10 4 6 0 8 0 art_heap4 256 3072 0 2830 53 33 20 21 0 8 1 art_table 32 3093 0 2847 4 1 3 3 0 8 0 art_node 16 724 0 682 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 2790 0 2780 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 16990 0 15580 46 0 46 46 0 8 0 ffsino 240 16990 0 15580 84 0 84 84 0 8 0 nchpl 144 36419 0 35934 61 38 23 61 0 8 0 uvmvnodes 72 7098 0 0 130 0 130 130 0 8 0 vnodes 208 7098 0 0 374 0 374 374 0 8 0 namei 1024 113843 0 113842 4 3 1 1 0 8 0 vcpupl 1984 103 0 0 13 0 13 13 0 8 0 vmpool 520 129 0 26 8 1 7 7 0 8 0 scsiplug 64 6 0 6 5 4 1 1 0 8 1 scxspl 192 105683 0 105683 36 35 1 7 0 8 1 plimitpl 152 594 0 588 1 0 1 1 0 8 0 sigapl 432 9142 0 9131 2 0 2 2 0 8 0 futexpl 56 283470 0 283470 4 3 1 1 0 8 1 knotepl 112 1741 0 1722 5 4 1 2 0 8 0 kqueuepl 104 2153 0 2149 4 3 1 4 0 8 0 pipepl 112 14116 0 14097 21 20 1 2 0 8 0 fdescpl 424 9143 0 9131 2 0 2 2 0 8 0 filepl 120 96483 0 96383 45 40 5 11 0 8 1 lockfpl 104 2613 0 2613 1 0 1 1 0 8 1 lockfspl 48 804 0 804 1 0 1 1 0 8 1 sessionpl 112 59 0 51 1 0 1 1 0 8 0 pgrppl 48 2333 0 2325 1 0 1 1 0 8 0 ucredpl 96 11242 0 11235 1 0 1 1 0 8 0 zombiepl 144 9131 0 9131 1 0 1 1 0 8 1 processpl 864 9159 0 9131 4 0 4 4 0 8 0 procpl 632 21237 0 21200 8 4 4 5 0 8 0 sosppl 128 88 0 88 23 23 0 1 0 8 0 sockpl 384 26587 0 26563 89 85 4 22 0 8 1 mcl64k 65536 1655 0 1655 135 134 1 64 0 8 1 mcl16k 16384 95 0 95 29 28 1 1 0 8 1 mcl12k 12288 197 0 197 23 22 1 1 0 8 1 mcl9k 9216 129 0 129 27 26 1 1 0 8 1 mcl8k 8192 296 0 296 17 16 1 1 0 8 1 mcl4k 4096 2222 0 2222 8 7 1 1 0 8 1 mcl2k2 2112 62 0 62 26 25 1 1 0 8 1 mcl2k 2048 84920 0 84870 48 40 8 19 0 8 1 mtagpl 80 302 0 302 8 7 1 1 0 8 1 mbufpl 256 214263 0 214199 290 274 16 39 0 8 8 bufpl 256 34108 0 27010 446 2 444 444 0 8 0 anonpl 16 999543 0 976674 309 214 95 109 0 62 1 amapchunkpl 152 50270 0 50105 147 130 17 21 0 158 10 amappl16 192 53124 0 51773 262 192 70 80 0 8 1 amappl15 184 806 0 806 6 6 0 1 0 8 0 amappl14 176 2624 0 2618 1 0 1 1 0 8 0 amappl13 168 561 0 559 7 6 1 1 0 8 0 amappl12 160 815 0 814 2 1 1 1 0 8 0 amappl11 152 1812 0 1808 1 0 1 1 0 8 0 amappl10 144 1311 0 1310 1 0 1 1 0 8 0 amappl9 136 2063 0 2058 1 0 1 1 0 8 0 amappl8 128 1808 0 1747 6 3 3 3 0 8 0 amappl7 120 1510 0 1501 1 0 1 1 0 8 0 amappl6 112 1710 0 1696 1 0 1 1 0 8 0 amappl5 104 1616 0 1609 1 0 1 1 0 8 0 amappl4 96 9383 0 9349 1 0 1 1 0 8 0 amappl3 88 2408 0 2396 1 0 1 1 0 8 0 amappl2 80 70471 0 70394 3 1 2 3 0 8 0 amappl1 72 175151 0 174776 26 17 9 20 0 8 0 amappl 80 22250 0 22164 2 0 2 2 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 64 133 0 4 3 0 3 3 0 8 0 uaddrrnd 24 9272 0 9131 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9272 0 9131 1 0 1 1 0 8 0 vmmpekpl 168 74031 0 73981 3 0 3 3 0 8 0 vmmpepl 168 1109724 0 1106979 583 418 165 167 0 357 34 vmsppl 272 9142 0 9131 7 6 1 2 0 8 0 pdppl 4096 18550 0 18417 18 1 17 17 0 8 0 pvpl 32 2696739 0 2674278 640 447 193 332 0 265 1 pmappl 200 9271 0 9157 7 0 7 7 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1182 0 578 20 1 19 19 0 8 0