[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 12.747618] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 14.355977] random: sshd: uninitialized urandom read (32 bytes read) [ 14.675913] random: sshd: uninitialized urandom read (32 bytes read) [ 15.121707] random: sshd: uninitialized urandom read (32 bytes read) [ 74.785350] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.62' (ECDSA) to the list of known hosts. [ 80.278467] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/05 12:25:33 parsed 1 programs [ 81.658841] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/05 12:25:35 executed programs: 0 [ 83.008584] IPVS: Creating netns size=2536 id=1 [ 83.043978] IPVS: Creating netns size=2536 id=2 [ 83.068056] IPVS: Creating netns size=2536 id=3 [ 83.092422] IPVS: Creating netns size=2536 id=4 [ 83.111431] IPVS: Creating netns size=2536 id=5 [ 83.152452] IPVS: Creating netns size=2536 id=6 [ 83.190559] IPVS: Creating netns size=2536 id=7 [ 83.237326] IPVS: Creating netns size=2536 id=8 [ 83.290597] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.314921] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.387267] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.406076] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.453070] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 83.471594] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.482471] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.490333] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 83.501314] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.516882] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.576924] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.591490] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 83.608680] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 83.626537] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 83.638040] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 83.646511] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 83.653548] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.661016] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.672726] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 83.680420] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 83.687417] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.705399] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.712656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.726532] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 83.764036] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.772602] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.822870] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 83.841809] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 83.852466] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 83.862775] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.870776] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 83.878013] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 83.886278] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 83.894675] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 83.903672] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.913547] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 83.922978] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.931869] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 83.940536] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.951453] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 83.960709] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.969368] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 83.977532] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 83.992141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.003324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.026112] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.067352] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 84.087672] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 84.108652] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 84.116725] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 84.126075] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 84.137437] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 84.146988] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 84.156469] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 84.167203] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.177853] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 84.188870] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.198766] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.214917] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 84.223060] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 84.231451] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.239877] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.247575] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.255403] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.263754] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 84.272619] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.281487] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.293020] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 84.306919] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.316857] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.330012] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 84.356449] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 84.377019] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 84.390715] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.398708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.414788] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 84.429378] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.436812] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 85.055555] ip (5155) used greatest stack depth: 23976 bytes left [ 86.360563] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 86.476256] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 86.489378] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.496293] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 86.642784] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 86.662357] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 86.752357] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 86.791346] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 86.802373] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.809093] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 86.826000] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 86.837088] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.847769] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 86.901605] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 86.907769] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.917265] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.115951] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 87.142914] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 87.212039] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 87.222396] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 87.230469] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 87.237185] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.247715] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 87.287770] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 87.298109] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 87.306129] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.350215] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 87.356362] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 87.363670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.407863] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 87.416547] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 87.428656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/05 12:25:40 executed programs: 19 2018/08/05 12:25:45 executed programs: 459 2018/08/05 12:25:50 executed programs: 885 2018/08/05 12:25:55 executed programs: 1332 2018/08/05 12:26:00 executed programs: 1795 [ 108.949608] kasan: CONFIG_KASAN_INLINE enabled [ 108.955819] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 108.966400] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 108.972641] Dumping ftrace buffer: [ 108.976170] (ftrace buffer empty) [ 108.979872] Modules linked in: [ 108.983190] CPU: 0 PID: 13874 Comm: syz-executor4 Not tainted 4.9.117-g8b21e85 #23 [ 108.990879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 109.000225] task: ffff8801d5059800 task.stack: ffff8801ce9d0000 [ 109.006273] RIP: 0010:[] [] loop_validate_file+0x20d/0x400 [ 109.015242] RSP: 0018:ffff8801ce9d7c80 EFLAGS: 00010206 [ 109.020680] RAX: 0000000000000036 RBX: dffffc0000000000 RCX: ffff8801d5059800 [ 109.027937] RDX: 0000000000000000 RSI: ffffffff825c6b9d RDI: 00000000000001b0 [ 109.035199] RBP: ffff8801ce9d7c98 R08: ffff8801d505a110 R09: 0000000000000001 [ 109.042460] R10: 0000000000000000 R11: 1ffff1003aa0b41d R12: 0000000000000000 [ 109.049719] R13: ffff8801d5da33c0 R14: ffff8801d5da33c0 R15: ffff8801d3954ed8 [ 109.056984] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f77b6b40 [ 109.065199] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 109.071071] CR2: 00000000080e809c CR3: 00000001bbb4a000 CR4: 00000000001606f0 [ 109.078332] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 109.085592] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 109.092846] Stack: [ 109.094985] ffff8801d3954d80 ffff8801d6de7000 0000000000000004 ffff8801ce9d7d20 [ 109.103041] ffffffff825cc31d 0000000000000046 0000000000000000 ffff8801d4174590 [ 109.111100] ffff8801d3954d98 ffff8801d3f0e3a0 0000000000000000 f56553fe6a56d2ec [ 109.119155] Call Trace: [ 109.121733] [] lo_ioctl+0x3ed/0x1690 [ 109.127093] [] lo_compat_ioctl+0xb2/0x140 [ 109.132884] [] ? lo_ioctl+0x1690/0x1690 [ 109.138500] [] compat_blkdev_ioctl+0x3a5/0x3ad0 [ 109.144807] [] ? __fget+0x20a/0x3b0 [ 109.150079] [] ? cfq_dispatch_requests+0x2ef0/0x2ef0 [ 109.156819] [] ? __fget+0x231/0x3b0 [ 109.162084] [] ? __fget+0x47/0x3b0 [ 109.167267] [] ? security_file_ioctl+0x8f/0xc0 [ 109.173492] [] compat_SyS_ioctl+0x126/0x1fe0 [ 109.179548] [] ? cfq_dispatch_requests+0x2ef0/0x2ef0 [ 109.186295] [] ? do_ioctl+0x60/0x60 [ 109.191564] [] do_fast_syscall_32+0x2f7/0x870 [ 109.197702] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 109.204368] [] entry_SYSENTER_compat+0x90/0xa2 [ 109.210607] 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 [ 109.238241] RIP [] loop_validate_file+0x20d/0x400 [ 109.244867] RSP [ 109.249305] ---[ end trace 4b5a22e898c21dcd ]--- [ 109.254160] Kernel panic - not syncing: Fatal exception [ 109.259930] Dumping ftrace buffer: [ 109.263446] (ftrace buffer empty) [ 109.267130] Kernel Offset: disabled [ 109.270729] Rebooting in 86400 seconds..