kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Nov 5 00:59:00 PST 2019 OpenBSD/amd64 (ci-openbsd-main-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.15.203' (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 *366221 31743 0 0x2 0 0 syz-executor3278 db_enter() at db_enter+0x18 panic() at panic+0x15c uvm_mapent_clone(ffff8000006a2200,8000,1f0000,0,7,7) at uvm_mapent_clone+0x1de uvm_share(ffff8000006a2200,0,7,fffffd803f012220,20008000,200000) at uvm_share+0x4b4 vm_impl_init_vmx(ffff800014889860,ffff8000ffff4500) at vm_impl_init_vmx+0xf1 vm_create(ffff800000a66000,ffff8000ffff4500) at vm_create+0x193 VOP_IOCTL(fffffd8037ddc410,c5005601,ffff800000a66000,1,fffffd803f7c6a20,ffff8000ffff4500) at VOP_IOCTL+0x88 vn_ioctl(fffffd803620b620,c5005601,ffff800000a66000,ffff8000ffff4500) at vn_ioctl+0xb7 sys_ioctl(ffff8000ffff4500,ffff8000148da768,ffff8000148da7b0) at sys_ioctl+0x5b9 syscall(ffff8000148da830) at syscall+0x507 Xsyscall(6,0,deab7582000,0,7f7ffffd7028,7f7ffffd7018) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6fb0, 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(ffff8000006a2200,8000,1f0000,0,7,7) at uvm_mapent_clone+0x1de uvm_share(ffff8000006a2200,0,7,fffffd803f012220,20008000,200000) at uvm_share+0x4b4 vm_impl_init_vmx(ffff800014889860,ffff8000ffff4500) at vm_impl_init_vmx+0xf1 vm_create(ffff800000a66000,ffff8000ffff4500) at vm_create+0x193 VOP_IOCTL(fffffd8037ddc410,c5005601,ffff800000a66000,1,fffffd803f7c6a20,ffff8000ffff4500) at VOP_IOCTL+0x88 vn_ioctl(fffffd803620b620,c5005601,ffff800000a66000,ffff8000ffff4500) at vn_ioctl+0xb7 sys_ioctl(ffff8000ffff4500,ffff8000148da768,ffff8000148da7b0) at sys_ioctl+0x5b9 syscall(ffff8000148da830) at syscall+0x507 Xsyscall(6,0,deab7582000,0,7f7ffffd7028,7f7ffffd7018) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6fb0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000148da190 rbx 0xffff8000148da240 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff8000148da150 r9 0x1 r10 0x58a71c39d496137f r11 0x41e1031ba5bbe106 r12 0x3000000008 r13 0xffff8000148da1a0 r14 0x100 r15 0x1 rip 0xffffffff81f649d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000148da180 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor3278) pid=366221 stat=onproc flags process=2 proc=0 pri=52, usrpri=52, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff49f0,0xffffffff82592f90 process=0xffff8000148a2378 user=0xffff8000148d5000, vmspace=0xfffffd803f012220 estcpu=2, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *31743 366221 93580 0 7 0x2 syz-executor3278 93580 128286 66098 0 3 0x10008a pause ksh 66098 396201 70966 0 3 0x92 select sshd 25910 144265 1 0 3 0x100083 ttyin getty 70966 514555 1 0 3 0x80 select sshd 71981 44626 26709 73 3 0x100090 kqread syslogd 26709 478034 1 0 3 0x100082 netio syslogd 4259 47270 1 77 3 0x100090 poll dhclient 63090 426851 1 0 3 0x80 poll dhclient 48795 325899 0 0 2 0x14200 zerothread 39158 470658 0 0 3 0x14200 aiodoned aiodoned 19622 423561 0 0 3 0x14200 syncer update 20631 389618 0 0 3 0x14200 cleaner cleaner 75307 387905 0 0 3 0x14200 reaper reaper 17248 56450 0 0 3 0x14200 pgdaemon pagedaemon 12805 202978 0 0 3 0x14200 bored crynlk 50579 428211 0 0 3 0x14200 bored crypto 66070 404589 0 0 3 0x40014200 acpi0 acpi0 46572 9186 0 0 3 0x14200 bored softnet 11309 272481 0 0 3 0x14200 bored systqmp 49728 194027 0 0 3 0x14200 bored systq 49692 462607 0 0 3 0x40014200 bored softclock 56386 8528 0 0 3 0x40014200 idle0 24297 508723 0 0 3 0x14200 bored smr 1 45544 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 9441 6318K 6319K 78643K 10538 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 1794 195K 288K 78643K 12646 0 0 file desc 1 0K 0K 78643K 1 0 0 proc 47 38K 46K 78643K 278 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 151 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 51 3K 3K 78643K 685 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 1695 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 1389 0 15 45 0 45 45 0 8 0 ffsino 240 1389 0 15 81 0 81 81 0 8 0 nchpl 144 1576 0 44 57 0 57 57 0 8 0 uvmvnodes 72 1398 0 0 26 0 26 26 0 8 0 vnodes 208 1398 0 0 74 0 74 74 0 8 0 namei 1024 3453 0 3453 1 0 1 1 0 8 1 vmpool 520 1 0 0 1 0 1 1 0 8 0 scxspl 192 2400 0 2400 2 0 2 2 0 8 2 plimitpl 152 13 0 8 1 0 1 1 0 8 0 sigapl 432 175 0 165 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 112 114 0 107 1 0 1 1 0 8 0 fdescpl 424 176 0 165 2 0 2 2 0 8 0 filepl 120 834 0 790 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 144 165 0 165 1 0 1 1 0 8 1 processpl 864 190 0 165 4 0 4 4 0 8 0 procpl 632 190 0 165 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 5768 0 5733 8 0 8 8 0 8 3 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9845 0 9795 6 0 6 6 0 8 1 bufpl 256 2045 0 239 113 0 113 113 0 8 0 anonpl 16 16897 0 15784 6 1 5 6 0 62 0 amapchunkpl 152 462 0 427 2 0 2 2 0 158 0 amappl16 192 70 0 65 1 0 1 1 0 8 0 amappl14 176 35 0 31 1 0 1 1 0 8 0 amappl12 160 3 0 3 1 0 1 1 0 8 1 amappl11 152 39 0 28 1 0 1 1 0 8 0 amappl10 144 2 0 2 1 0 1 1 0 8 1 amappl9 136 372 0 371 1 0 1 1 0 8 0 amappl8 128 82 0 78 1 0 1 1 0 8 0 amappl7 120 15 0 13 1 0 1 1 0 8 0 amappl6 112 45 0 41 1 0 1 1 0 8 0 amappl5 104 144 0 134 1 0 1 1 0 8 0 amappl4 96 393 0 370 1 0 1 1 0 8 0 amappl3 88 103 0 97 1 0 1 1 0 8 0 amappl2 80 705 0 656 2 0 2 2 0 8 0 amappl1 72 11876 0 11499 14 5 9 14 0 8 0 amappl 80 353 0 333 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 177 0 165 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 177 0 165 1 0 1 1 0 8 0 vmmpekpl 168 5293 0 5277 1 0 1 1 0 8 0 vmmpepl 168 25221 0 24485 44 4 40 44 0 357 7 vmsppl 272 175 0 165 1 0 1 1 0 8 0 pdppl 4096 360 0 330 5 0 5 5 0 8 0 pvpl 32 70145 0 67396 26 0 26 26 0 265 3 pmappl 200 176 0 165 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 230 0 2 7 0 7 7 0 8 0