kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Oct 14 22:58:41 PDT 2019 OpenBSD/amd64 (ci-openbsd-main-4.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.15.215' (ECDSA) to the list of known hosts. executing program login: panic: uvmspace_fork: no space in map for entry in empty map Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *202134 12199 0 0x2 0 0 syz-executor1997 db_enter() at db_enter+0x18 panic() at panic+0x15c uvm_mapent_clone(ffff8000006a0400,c000,1f0000,0,7,7) at uvm_mapent_clone+0x1de uvm_share(ffff8000006a0400,0,7,fffffd803f014990,20004000,200000) at uvm_share+0x4b4 vm_impl_init_vmx(ffff800014889c70,ffff8000ffff5158) at vm_impl_init_vmx+0xf1 vm_create(ffff800000a63000,ffff8000ffff5158) at vm_create+0x193 VOP_IOCTL(fffffd803d4bc8f0,c5005601,ffff800000a63000,1,fffffd803f7c6960,ffff8000ffff5158) at VOP_IOCTL+0x88 vn_ioctl(fffffd80362240f8,c5005601,ffff800000a63000,ffff8000ffff5158) at vn_ioctl+0xb7 sys_ioctl(ffff8000ffff5158,ffff8000148da528,ffff8000148da570) at sys_ioctl+0x5b9 syscall(ffff8000148da5f0) at syscall+0x507 Xsyscall(6,0,20e2ee18000,0,7f7ffffd0938,7f7ffffd0928) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd08c0, count: 4 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 uvmspace_fork: no space in map for entry in empty map ddb> trace db_enter() at db_enter+0x18 panic() at panic+0x15c uvm_mapent_clone(ffff8000006a0400,c000,1f0000,0,7,7) at uvm_mapent_clone+0x1de uvm_share(ffff8000006a0400,0,7,fffffd803f014990,20004000,200000) at uvm_share+0x4b4 vm_impl_init_vmx(ffff800014889c70,ffff8000ffff5158) at vm_impl_init_vmx+0xf1 vm_create(ffff800000a63000,ffff8000ffff5158) at vm_create+0x193 VOP_IOCTL(fffffd803d4bc8f0,c5005601,ffff800000a63000,1,fffffd803f7c6960,ffff8000ffff5158) at VOP_IOCTL+0x88 vn_ioctl(fffffd80362240f8,c5005601,ffff800000a63000,ffff8000ffff5158) at vn_ioctl+0xb7 sys_ioctl(ffff8000ffff5158,ffff8000148da528,ffff8000148da570) at sys_ioctl+0x5b9 syscall(ffff8000148da5f0) at syscall+0x507 Xsyscall(6,0,20e2ee18000,0,7f7ffffd0938,7f7ffffd0928) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd08c0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000148d9f50 rbx 0xffff8000148da000 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff8000148d9f10 r9 0x1 r10 0xf5ff27c447519ffd r11 0x59c5698ddbd91143 r12 0x3000000008 r13 0xffff8000148d9f60 r14 0x100 r15 0x1 rip 0xffffffff81269658 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000148d9f40 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor1997) pid=202134 stat=onproc flags process=2 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff4ee0,0xffffffff82565ad0 process=0xffff8000148a2a38 user=0xffff8000148d5000, vmspace=0xfffffd803f014990 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *12199 202134 40133 0 7 0x2 syz-executor1997 40133 22081 86101 0 3 0x10008a pause ksh 86101 415252 68099 0 2 0x12 sshd 85556 399247 1 0 3 0x100083 ttyin getty 68099 307155 1 0 3 0x80 select sshd 99284 21867 59612 73 3 0x100090 kqread syslogd 59612 231445 1 0 3 0x100082 netio syslogd 49128 192274 1 77 3 0x100090 poll dhclient 69847 521540 1 0 3 0x80 poll dhclient 5304 124627 0 0 2 0x14200 zerothread 38600 22757 0 0 3 0x14200 aiodoned aiodoned 67154 343398 0 0 3 0x14200 syncer update 64165 524119 0 0 3 0x14200 cleaner cleaner 32307 191274 0 0 3 0x14200 reaper reaper 89142 198508 0 0 3 0x14200 pgdaemon pagedaemon 63433 384343 0 0 3 0x14200 bored crynlk 35844 232084 0 0 3 0x14200 bored crypto 46752 440952 0 0 3 0x40014200 acpi0 acpi0 34346 342334 0 0 3 0x14200 bored softnet 65383 97055 0 0 3 0x14200 bored systqmp 22343 417924 0 0 3 0x14200 bored systq 17755 269607 0 0 3 0x40014200 bored softclock 5089 98638 0 0 3 0x40014200 idle0 34714 88039 0 0 3 0x14200 bored smr 1 367512 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 9428 6308K 6309K 78643K 10521 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 61 1K 2K 78643K 115 0 0 ifaddr 21 7K 7K 78643K 21 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 1 2K 2K 78643K 14 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1180 74K 74K 78643K 1185 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 3 0K 0K 78643K 3 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 1 0K 0K 78643K 1 0 0 proc 47 38K 46K 78643K 267 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 11 0K 0K 78643K 11 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 152 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 53 3K 3K 78643K 710 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 3 0K 0K 78643K 3 0 0 temp 30 3523K 3587K 78643K 1722 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 2 0 0 1 0 1 1 0 8 0 rtpcb 80 15 0 13 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 22 0 16 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 97 0 0 7 0 7 7 0 8 0 art_table 32 98 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1390 0 15 45 0 45 45 0 8 0 ffsino 240 1390 0 15 81 0 81 81 0 8 0 nchpl 144 1578 0 42 57 0 57 57 0 8 0 uvmvnodes 72 1399 0 0 26 0 26 26 0 8 0 vnodes 208 1399 0 0 74 0 74 74 0 8 0 namei 1024 3459 0 3459 1 0 1 1 0 8 1 vmpool 520 1 0 0 1 0 1 1 0 8 0 scxspl 192 2416 0 2416 2 0 2 2 0 8 2 plimitpl 152 13 0 8 1 0 1 1 0 8 0 sigapl 432 176 0 166 2 0 2 2 0 8 0 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 104 1 0 0 1 0 1 1 0 8 0 pipepl 112 118 0 111 1 0 1 1 0 8 0 fdescpl 424 177 0 166 2 0 2 2 0 8 0 filepl 120 839 0 795 2 0 2 2 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 166 0 166 1 0 1 1 0 8 1 processpl 864 191 0 166 4 0 4 4 0 8 0 procpl 632 191 0 166 3 0 3 3 0 8 0 sockpl 384 64 0 48 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5791 0 5756 8 0 8 8 0 8 2 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9933 0 9886 6 0 6 6 0 8 2 bufpl 256 2070 0 262 113 0 113 113 0 8 0 anonpl 16 18073 0 16948 7 1 6 7 0 62 0 amapchunkpl 152 539 0 504 2 0 2 2 0 158 0 amappl16 192 72 0 66 1 0 1 1 0 8 0 amappl14 176 13 0 12 1 0 1 1 0 8 0 amappl12 160 7 0 7 1 0 1 1 0 8 1 amappl11 152 42 0 31 1 0 1 1 0 8 0 amappl10 144 5 0 5 1 0 1 1 0 8 1 amappl9 136 393 0 389 1 0 1 1 0 8 0 amappl8 128 81 0 77 1 0 1 1 0 8 0 amappl7 120 15 0 14 1 0 1 1 0 8 0 amappl6 112 58 0 51 1 0 1 1 0 8 0 amappl5 104 144 0 134 1 0 1 1 0 8 0 amappl4 96 397 0 374 1 0 1 1 0 8 0 amappl3 88 105 0 99 1 0 1 1 0 8 0 amappl2 80 686 0 637 2 0 2 2 0 8 0 amappl1 72 12016 0 11632 16 5 11 16 0 8 1 amappl 80 374 0 354 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 178 0 166 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 178 0 166 1 0 1 1 0 8 0 vmmpekpl 168 5321 0 5305 1 0 1 1 0 8 0 vmmpepl 168 25283 0 24534 48 5 43 48 0 357 8 vmsppl 272 176 0 166 1 0 1 1 0 8 0 pdppl 4096 362 0 332 5 0 5 5 0 8 0 pvpl 32 71230 0 68503 26 0 26 26 0 265 3 pmappl 200 177 0 166 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 230 0 2 7 0 7 7 0 8 0