[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.437529] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 24.599145] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 24.985678] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 25.639477] random: sshd: uninitialized urandom read (32 bytes read, 75 bits of entropy available) [ 100.969434] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available) Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts. [ 106.417504] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available) 2018/08/05 12:25:20 parsed 1 programs [ 107.844550] random: cc1: uninitialized urandom read (8 bytes read, 107 bits of entropy available) 2018/08/05 12:25:22 executed programs: 0 [ 109.191137] IPVS: Creating netns size=2552 id=1 [ 109.242147] IPVS: Creating netns size=2552 id=2 [ 109.296647] IPVS: Creating netns size=2552 id=3 [ 109.345402] IPVS: Creating netns size=2552 id=4 [ 109.425652] IPVS: Creating netns size=2552 id=5 [ 109.506454] IPVS: Creating netns size=2552 id=6 [ 109.598365] IPVS: Creating netns size=2552 id=7 [ 109.710034] IPVS: Creating netns size=2552 id=8 [ 109.800465] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 109.863488] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 109.937366] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.001064] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 110.146072] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.153480] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 110.211719] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 110.219959] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 110.327321] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 110.336896] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.363049] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 110.392819] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 110.421880] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.497609] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 110.506694] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.516821] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 110.568922] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 110.591869] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 110.614870] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 110.662733] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 110.687474] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 110.735170] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 110.791499] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 110.796471] ip (4432) used greatest stack depth: 24384 bytes left [ 110.811864] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 110.839368] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 110.847954] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 110.932213] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 110.945743] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.962789] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 110.977950] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 110.998969] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.034151] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.055145] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 111.065528] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 111.107897] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 111.116860] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 111.191168] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 111.229662] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 111.238465] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.253754] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 111.326269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 111.387947] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 111.395946] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.465849] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.477963] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 111.491955] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 111.542031] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.570159] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 111.581269] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 111.666377] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 111.675450] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 111.750238] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 111.763567] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 111.778169] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.809531] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 111.861934] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 111.930449] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 112.005884] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 112.092642] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 112.113520] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 112.137496] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 112.208084] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 112.290475] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 112.327856] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 115.392309] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 115.467686] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 115.571943] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 115.680745] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 115.941256] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 116.069874] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 116.196419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 116.348641] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 116.371669] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 116.393526] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 116.540160] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 116.622554] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 116.710497] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 116.740899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 116.763204] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 116.998610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/05 12:25:30 executed programs: 8 INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes 2018/08/05 12:25:35 executed programs: 241 [ 127.105610] kasan: CONFIG_KASAN_INLINE enabled [ 127.110187] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 127.123978] Dumping ftrace buffer: [ 127.127503] (ftrace buffer empty) [ 127.131197] Modules linked in: [ 127.134513] CPU: 1 PID: 8547 Comm: syz-executor4 Not tainted 4.4.145-g2241aa9 #14 [ 127.142116] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 127.151459] task: ffff8801d9761800 task.stack: ffff8800acd30000 [ 127.157505] RIP: 0010:[] [] loop_validate_file+0x20d/0x400 [ 127.166467] RSP: 0018:ffff8800acd37ad0 EFLAGS: 00010206 [ 127.171907] RAX: 0000000000000036 RBX: dffffc0000000000 RCX: ffff8801d9761800 [ 127.179166] RDX: 0000000000000000 RSI: ffffffff8251965d RDI: 00000000000001b0 [ 127.186426] RBP: ffff8800acd37ae8 R08: ffff8801d9762128 R09: 0000000000000001 [ 127.193686] R10: 0000000000000000 R11: ffff8801d9761800 R12: 0000000000000000 [ 127.200944] R13: ffff8800b9c8ed40 R14: ffff8800b9c8ed40 R15: ffff8801d699fbd8 [ 127.208202] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f773eb40 [ 127.216419] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 127.222293] CR2: 0000000008148004 CR3: 00000001d905e000 CR4: 00000000001606f0 [ 127.229555] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 127.236813] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 127.244066] Stack: [ 127.246203] ffff8801d699fa80 ffff8801c6cdc200 0000000000000004 ffff8800acd37b78 [ 127.254255] ffffffff8251fbed ffff8801d9766860 ffff880000000001 ffffffff00000000 [ 127.262290] ffffffff81034676 ffff8801d699fa98 ffffffff814fb552 60eb5fcdbbaf1baa [ 127.270332] Call Trace: [ 127.272909] [] lo_ioctl+0x3ed/0x16c0 [ 127.278283] [] ? save_stack_trace+0x26/0x50 [ 127.284251] [] ? kasan_slab_free+0x72/0xc0 [ 127.290131] [] lo_compat_ioctl+0xb2/0x140 [ 127.295919] [] ? lo_ioctl+0x16c0/0x16c0 [ 127.301536] [] compat_blkdev_ioctl+0x395/0x3a10 [ 127.307846] [] ? iput+0x226/0x980 [ 127.312943] [] ? cfq_dispatch_requests+0x2fc0/0x2fc0 [ 127.319687] [] ? __fget+0x16f/0x3b0 [ 127.324954] [] ? __fget+0x47/0x3b0 [ 127.330134] [] ? security_file_ioctl+0x8f/0xc0 [ 127.336361] [] ? cfq_dispatch_requests+0x2fc0/0x2fc0 [ 127.343100] [] compat_SyS_ioctl+0x484/0x2270 [ 127.349135] [] ? putname+0xdb/0x110 [ 127.354387] [] ? compat_SyS_ppoll+0x420/0x420 [ 127.360504] [] ? kmem_cache_free+0x2b4/0x340 [ 127.366578] [] ? putname+0xe0/0x110 [ 127.371835] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 127.377954] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 127.384943] [] ? vmacache_update+0xfe/0x130 [ 127.390893] [] ? do_fast_syscall_32+0xdb/0x8b0 [ 127.397105] [] ? compat_SyS_ppoll+0x420/0x420 [ 127.403226] [] do_fast_syscall_32+0x324/0x8b0 [ 127.409363] [] sysenter_flags_fixed+0xd/0x1a [ 127.415400] Code: 00 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 f7 01 00 00 4d 8b a4 24 f0 00 00 00 49 8d bc 24 b0 01 00 00 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 cc 01 00 00 4d 8b a4 24 b0 01 00 00 4c 89 e0 [ 127.442483] RIP [] loop_validate_file+0x20d/0x400 [ 127.449075] RSP [ 127.454118] ---[ end trace 26d2ecbbcba6d749 ]--- [ 127.458951] Kernel panic - not syncing: Fatal exception [ 127.464682] Dumping ftrace buffer: [ 127.468198] (ftrace buffer empty) [ 127.471894] Kernel Offset: disabled [ 127.475502] Rebooting in 86400 seconds..