kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Sep 4 08:03:42 PDT 2019 OpenBSD/amd64 (ci-openbsd-multicore-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.43' (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 0x0xffff800020ab1c08 vm_impl_init_vmx: uvm_share failed (22) failed to init arch-specific features for vm 0x0xffff800020ab1c08 panic: malloc: allocation too large, type = 2, size = 18446744073709551296 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *386726 24788 0 0 0x4000000 1K syz-executor6244 db_enter() at db_enter+0x18 panic() at panic+0x15c malloc(fffffffffffffec0,2,a) at malloc+0x9c9 vm_get_info(ffff800020b0f7e0) at vm_get_info+0x9d VOP_IOCTL(fffffd806e6b2c30,c0185603,ffff800020b0f7e0,3,fffffd807f7c6960,ffff800020ac0ee0) at VOP_IOCTL+0x88 vn_ioctl(fffffd806e97ed18,c0185603,ffff800020b0f7e0,ffff800020ac0ee0) at vn_ioctl+0xb7 sys_ioctl(ffff800020ac0ee0,ffff800020b0f8f8,ffff800020b0f940) at sys_ioctl+0x5b9 syscall(ffff800020b0f9c0) at syscall+0x4a4 Xsyscall(6,0,a5ef4a1e0c8,0,a5ef4a1e0a8,a5ef4a1e0a0) at Xsyscall+0x128 end of kernel end trace frame: 0xa6144716770, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic malloc: allocation too large, type = 2, size = 18446744073709551296 ddb{1}> trace db_enter() at db_enter+0x18 panic() at panic+0x15c malloc(fffffffffffffec0,2,a) at malloc+0x9c9 vm_get_info(ffff800020b0f7e0) at vm_get_info+0x9d VOP_IOCTL(fffffd806e6b2c30,c0185603,ffff800020b0f7e0,3,fffffd807f7c6960,ffff800020ac0ee0) at VOP_IOCTL+0x88 vn_ioctl(fffffd806e97ed18,c0185603,ffff800020b0f7e0,ffff800020ac0ee0) at vn_ioctl+0xb7 sys_ioctl(ffff800020ac0ee0,ffff800020b0f8f8,ffff800020b0f940) at sys_ioctl+0x5b9 syscall(ffff800020b0f9c0) at syscall+0x4a4 Xsyscall(6,0,a5ef4a1e0c8,0,a5ef4a1e0a8,a5ef4a1e0a0) at Xsyscall+0x128 end of kernel end trace frame: 0xa6144716770, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b0f420 rbx 0xffff800020b0f4d0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff820f41df kprintf+0x16f r9 0x1 r10 0x6331e9d004a32272 r11 0xbe9d1792eb6cba9f r12 0x3000000008 r13 0xffff800020b0f430 r14 0x100 r15 0x1 rip 0xffffffff81280be8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b0f410 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor6244) pid=386726 stat=onproc flags process=0 proc=4000000 pri=55, usrpri=55, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac0778,0xffff800020ac1b48 process=0xffff800020a8b510 user=0xffff800020b0a000, vmspace=0xfffffd806e7dd8a8 estcpu=5, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 24788 28947 4429 0 3 0x80 nanosleep syz-executor6244 *24788 386726 4429 0 7 0x4000000 syz-executor6244 24788 67983 4429 0 3 0x4000080 fsleep syz-executor6244 4429 471166 63260 0 3 0x82 nanosleep syz-executor6244 63260 77913 43013 0 3 0x10008a pause ksh 43013 90642 38003 0 3 0x92 select sshd 42260 333696 1 0 3 0x100083 ttyin getty 38003 303444 1 0 3 0x80 select sshd 31489 140992 58192 74 3 0x100092 bpf pflogd 58192 322365 1 0 3 0x80 netio pflogd 27175 73754 55310 73 3 0x100010 biowait syslogd 55310 48922 1 0 3 0x100082 netio syslogd 49631 198451 1 77 3 0x100090 poll dhclient 30906 122151 1 0 3 0x80 poll dhclient 60885 27021 0 0 3 0x14200 pgzero zerothread 76996 302615 0 0 3 0x14200 aiodoned aiodoned 32042 274888 0 0 3 0x14200 syncer update 86846 395624 0 0 3 0x14200 cleaner cleaner 75053 491731 0 0 3 0x14200 reaper reaper 54659 518570 0 0 3 0x14200 pgdaemon pagedaemon 30183 137470 0 0 3 0x14200 bored crynlk 72206 170432 0 0 3 0x14200 bored crypto 92764 478170 0 0 3 0x40014200 acpi0 acpi0 51668 448489 0 0 3 0x40014200 idle1 65828 485329 0 0 3 0x14200 bored softnet 60151 106974 0 0 3 0x14200 bored systqmp 46706 111898 0 0 3 0x14200 bored systq 77373 222920 0 0 3 0x40014200 bored softclock 14519 397862 0 0 7 0x40014200 idle0 13073 31740 0 0 3 0x14200 bored smr 1 519456 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 24788 (syz-executor6244) thread 0xffff800020ac0ee0 (386726) shared rwlock vmlistlock r = 0 (0xffff80000066f478) #0 witness_lock+0x52e #1 vm_get_info+0x39 #2 VOP_IOCTL+0x88 #3 vn_ioctl+0xb7 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826286c0) #0 witness_lock+0x52e #1 syscall+0x400 #2 Xsyscall+0x128 Process 27175 (syslogd) thread 0xffff800020ac0288 (73754) exclusive rrwlock inode r = 0 (0xfffffd806eadec48) #0 witness_lock+0x52e #1 rw_enter+0x447 #2 rrw_enter+0x4f #3 VOP_LOCK+0xf0 #4 vn_lock+0x81 #5 sys_fsync+0x114 #6 syscall+0x4a4 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9452 6383K 6384K 78643K 10540 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 61 2K 2K 78643K 125 0 0 ifaddr 25 7K 7K 78643K 26 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1469 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1181 74K 74K 78643K 1186 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 1K 1K 78643K 4 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12843 0 0 file desc 1 0K 0K 78643K 1 0 0 proc 59 63K 71K 78643K 344 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 181 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 63 3K 3K 78643K 809 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 4 0K 0K 78643K 4 0 0 temp 39 3536K 3600K 78643K 2001 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> 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 plcache 128 20 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 29 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 29 0 23 1 0 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 8 0 0 1 0 1 1 0 8 0 pfstkey 112 8 0 0 1 0 1 1 0 8 0 pfstate 328 8 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 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 1399 0 16 45 0 45 45 0 8 0 ffsino 272 1399 0 16 93 0 93 93 0 8 0 nchpl 144 1587 0 44 58 0 58 58 0 8 0 uvmvnodes 72 1409 0 0 26 0 26 26 0 8 0 vnodes 208 1409 0 0 75 0 75 75 0 8 0 namei 1024 3767 0 3767 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vmpool 552 2 0 2 1 0 1 1 0 8 1 scxspl 192 2508 0 2507 2 1 1 2 0 8 0 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 206 0 193 2 0 2 2 0 8 0 futexpl 56 9 0 8 1 0 1 1 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 112 134 0 127 1 0 1 1 0 8 0 fdescpl 488 207 0 193 3 0 3 3 0 8 0 filepl 152 986 0 934 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 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 193 0 193 1 0 1 1 0 8 1 processpl 896 222 0 193 4 0 4 4 0 8 0 procpl 632 224 0 193 3 0 3 3 0 8 0 sockpl 384 73 0 55 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 7 0 7 7 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 70 0 0 5 0 5 5 0 8 0 bufpl 256 2181 0 278 119 0 119 119 0 8 0 anonpl 16 19136 0 17862 7 1 6 7 0 124 0 amapchunkpl 152 530 0 488 2 0 2 2 0 158 0 amappl16 192 83 0 77 1 0 1 1 0 8 0 amappl14 176 15 0 14 1 0 1 1 0 8 0 amappl12 160 4 0 4 1 0 1 1 0 8 1 amappl11 152 48 0 33 1 0 1 1 0 8 0 amappl10 144 7 0 5 1 0 1 1 0 8 0 amappl9 136 445 0 441 1 0 1 1 0 8 0 amappl8 128 101 0 95 1 0 1 1 0 8 0 amappl7 120 18 0 17 1 0 1 1 0 8 0 amappl6 112 60 0 54 1 0 1 1 0 8 0 amappl5 104 131 0 117 1 0 1 1 0 8 0 amappl4 96 469 0 443 1 0 1 1 0 8 0 amappl3 88 101 0 95 1 0 1 1 0 8 0 amappl2 80 793 0 731 2 0 2 2 0 8 0 amappl1 72 13894 0 13469 15 5 10 15 0 8 0 amappl 80 414 0 390 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 24 209 0 193 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 209 0 193 1 0 1 1 0 8 0 vmmpekpl 168 5562 0 5541 1 0 1 1 0 8 0 vmmpepl 168 29206 0 28321 47 6 41 47 0 357 2 vmsppl 368 206 0 193 2 0 2 2 0 8 0 pdppl 4096 425 0 390 5 0 5 5 0 8 0 pvpl 32 79450 0 76390 28 0 28 28 0 265 3 pmappl 232 208 0 195 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 249 0 3 8 0 8 8 0 8 0