kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sat Aug 24 07:01:10 PDT 2019 OpenBSD/amd64 (ci-openbsd-main-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.39' (ECDSA) to the list of known hosts. executing program login: vm_impl_init_vmx: uvm_share failed (22) failed to init arch-specific features for vm 0x0xffff800014889c70 vm_impl_init_vmx: uvm_share failed (22) failed to init arch-specific features for vm 0x0xffff800014889c70 panic: malloc: allocation too large, type = 2, size = 18446744073709551296 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *195683 19167 0 0x2 0x4000000 0 syz-executor9859 db_enter() at db_enter+0x18 panic() at panic+0x15c malloc(fffffffffffffec0,2,a) at malloc+0x9c9 vm_get_info(ffff8000148e0750) at vm_get_info+0x9a VOP_IOCTL(fffffd80386a6588,c0185603,ffff8000148e0750,41,fffffd803f7c6ba0,ffff8000ffff5158) at VOP_IOCTL+0x88 vn_ioctl(fffffd80361285a8,c0185603,ffff8000148e0750,ffff8000ffff5158) at vn_ioctl+0xb7 sys_ioctl(ffff8000ffff5158,ffff8000148e0868,ffff8000148e08d0) at sys_ioctl+0x5b8 syscall(ffff8000148e0930) at syscall+0x508 Xsyscall(6,0,35f77ecc0c8,0,35f77ecc0a8,35f77ecc0a0) at Xsyscall+0x128 end of kernel end trace frame: 0x361a5ef32c0, count: 6 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 malloc: allocation too large, type = 2, size = 18446744073709551296 ddb> trace db_enter() at db_enter+0x18 panic() at panic+0x15c malloc(fffffffffffffec0,2,a) at malloc+0x9c9 vm_get_info(ffff8000148e0750) at vm_get_info+0x9a VOP_IOCTL(fffffd80386a6588,c0185603,ffff8000148e0750,41,fffffd803f7c6ba0,ffff8000ffff5158) at VOP_IOCTL+0x88 vn_ioctl(fffffd80361285a8,c0185603,ffff8000148e0750,ffff8000ffff5158) at vn_ioctl+0xb7 sys_ioctl(ffff8000ffff5158,ffff8000148e0868,ffff8000148e08d0) at sys_ioctl+0x5b8 syscall(ffff8000148e0930) at syscall+0x508 Xsyscall(6,0,35f77ecc0c8,0,35f77ecc0a8,35f77ecc0a0) at Xsyscall+0x128 end of kernel end trace frame: 0x361a5ef32c0, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000148e0390 rbx 0xffff8000148e0440 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff8000148e0350 r9 0x1 r10 0x9dff02505c749dad r11 0x82a1c1de021beb60 r12 0x3000000008 r13 0xffff8000148e03a0 r14 0x100 r15 0x1 rip 0xffffffff8111e748 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000148e0380 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor9859) pid=195683 stat=onproc flags process=2 proc=4000000 pri=52, usrpri=52, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff49f0,0xffffffff82583dc8 process=0xffff8000148a2018 user=0xffff8000148db000, vmspace=0xfffffd803f013330 estcpu=2, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 19167 58852 53287 0 2 0x2 syz-executor9859 *19167 195683 53287 0 7 0x4000002 syz-executor9859 53287 357915 32208 0 3 0x10008a pause ksh 32208 125054 95569 0 3 0x92 select sshd 28415 339530 1 0 3 0x100083 ttyin getty 95569 434123 1 0 3 0x80 select sshd 44970 499855 41244 73 2 0x100010 syslogd 41244 264834 1 0 3 0x100082 netio syslogd 66694 339780 1 77 3 0x100090 poll dhclient 46581 8753 1 0 3 0x80 poll dhclient 16195 438318 0 0 2 0x14200 zerothread 51453 175413 0 0 3 0x14200 aiodoned aiodoned 4699 320976 0 0 3 0x14200 syncer update 22066 188880 0 0 3 0x14200 cleaner cleaner 77838 478530 0 0 3 0x14200 reaper reaper 81225 328686 0 0 3 0x14200 pgdaemon pagedaemon 4770 476874 0 0 3 0x14200 bored crynlk 7511 154208 0 0 3 0x14200 bored crypto 27094 323036 0 0 3 0x40014200 acpi0 acpi0 67085 40039 0 0 3 0x14200 bored softnet 99726 397063 0 0 3 0x14200 bored systqmp 59544 34869 0 0 3 0x14200 bored systq 84343 501495 0 0 3 0x40014200 bored softclock 13250 379238 0 0 3 0x40014200 idle0 72285 341547 0 0 3 0x14200 bored smr 1 480906 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 6307K 6308K 78643K 10521 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 61 1K 2K 78643K 116 0 0 ifaddr 21 7K 7K 78643K 21 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 15 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 2 0K 0K 78643K 4 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 40 30K 38K 78643K 257 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 56 2K 3K 78643K 704 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 3515K 3579K 78643K 1718 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 1391 0 16 45 0 45 45 0 8 0 ffsino 240 1391 0 16 81 0 81 81 0 8 0 nchpl 144 1578 0 43 57 0 57 57 0 8 0 uvmvnodes 72 1400 0 0 26 0 26 26 0 8 0 vnodes 200 1400 0 0 74 0 74 74 0 8 0 namei 1024 3459 0 3459 1 0 1 1 0 8 1 vmpool 520 2 0 2 1 0 1 1 0 8 1 scxspl 192 2424 0 2424 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 futexpl 56 8 0 8 1 0 1 1 0 8 1 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 120 842 0 796 2 0 2 2 0 8 0 lockfpl 104 6 0 6 1 1 0 1 0 8 0 lockfspl 48 3 0 3 1 1 0 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 632 192 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 6088 0 6048 9 0 9 9 0 8 2 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 10355 0 10306 6 0 6 6 0 8 2 bufpl 256 2103 0 262 116 0 116 116 0 8 0 anonpl 16 18124 0 16952 7 2 5 7 0 62 0 amapchunkpl 152 486 0 449 2 0 2 2 0 158 0 amappl16 192 80 0 73 1 0 1 1 0 8 0 amappl14 176 36 0 32 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 6 0 6 1 0 1 1 0 8 1 amappl11 152 38 0 27 1 0 1 1 0 8 0 amappl10 144 47 0 47 1 0 1 1 0 8 1 amappl9 136 389 0 388 1 0 1 1 0 8 0 amappl8 128 83 0 78 1 0 1 1 0 8 0 amappl7 120 15 0 14 1 0 1 1 0 8 0 amappl6 112 41 0 37 1 0 1 1 0 8 0 amappl5 104 142 0 132 1 0 1 1 0 8 0 amappl4 96 402 0 379 1 0 1 1 0 8 0 amappl3 88 152 0 139 1 0 1 1 0 8 0 amappl2 80 716 0 660 2 0 2 2 0 8 0 amappl1 72 12069 0 11680 16 7 9 16 0 8 0 amappl 80 365 0 345 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 dma64 64 259 0 259 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 24 179 0 166 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 179 0 166 1 0 1 1 0 8 0 vmmpekpl 168 5331 0 5315 1 0 1 1 0 8 0 vmmpepl 168 25745 0 24958 48 7 41 48 0 357 6 vmsppl 272 176 0 166 1 0 1 1 0 8 0 pdppl 4096 364 0 336 5 0 5 5 0 8 0 pvpl 32 71432 0 68648 26 0 26 26 0 265 3 pmappl 200 178 0 168 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 234 0 2 7 0 7 7 0 8 0