[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.347017] 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: [ 23.977006] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 24.421584] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 25.030454] random: sshd: uninitialized urandom read (32 bytes read, 60 bits of entropy available) [ 107.038866] random: sshd: uninitialized urandom read (32 bytes read, 89 bits of entropy available) Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. [ 112.547416] random: sshd: uninitialized urandom read (32 bytes read, 92 bits of entropy available) 2018/08/25 19:52:12 parsed 1 programs [ 113.990267] random: cc1: uninitialized urandom read (8 bytes read, 94 bits of entropy available) 2018/08/25 19:52:14 executed programs: 0 [ 115.175680] IPVS: Creating netns size=2552 id=1 [ 115.223217] IPVS: Creating netns size=2552 id=2 [ 115.285660] IPVS: Creating netns size=2552 id=3 [ 115.342408] IPVS: Creating netns size=2552 id=4 [ 115.401502] IPVS: Creating netns size=2552 id=5 [ 115.529048] IPVS: Creating netns size=2552 id=6 [ 115.594373] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 115.621604] IPVS: Creating netns size=2552 id=7 [ 115.635745] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 115.784453] IPVS: Creating netns size=2552 id=8 [ 115.847651] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 115.913950] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 115.925923] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 115.961133] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 116.140313] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 116.182210] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 116.210807] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 116.238014] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 116.247130] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 116.341144] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 116.432089] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 116.450630] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 116.459994] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 116.468020] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 116.495721] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 116.510014] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 116.522753] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 116.585313] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 116.609682] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 116.636576] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 116.661452] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 116.669531] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 116.817933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 116.827994] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 116.897651] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 116.931744] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 117.019906] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 117.067309] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 117.081655] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 117.166156] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 117.210863] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 117.225634] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 117.317345] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 117.325504] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 117.403242] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 117.420427] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 117.477453] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 117.497484] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 117.516531] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 117.604493] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 117.616760] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 117.629999] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 117.711551] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 117.726395] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 117.750631] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 117.804665] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 117.823247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 117.837225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 117.861717] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 117.925537] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 117.948893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 118.035255] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 118.058609] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 118.127053] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 118.272061] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 118.386334] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 118.500964] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 118.570651] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 118.642352] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 118.733870] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 118.835556] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 118.897422] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes [ 121.715355] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 121.953621] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.466870] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.722292] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.838789] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.860269] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 123.011050] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 123.074252] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 123.137072] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 123.237219] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 123.283047] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 123.565337] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/25 19:52:23 executed programs: 8 [ 124.004787] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 124.377422] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 124.581322] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 124.860353] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/08/25 19:52:28 executed programs: 147 2018/08/25 19:52:33 executed programs: 357 2018/08/25 19:52:38 executed programs: 583 2018/08/25 19:52:43 executed programs: 827 [ 145.029412] kasan: CONFIG_KASAN_INLINE enabled [ 145.051142] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 145.087817] Dumping ftrace buffer: [ 145.091354] (ftrace buffer empty) [ 145.095048] Modules linked in: [ 145.098341] CPU: 0 PID: 8711 Comm: syz-executor7 Not tainted 4.4.152-ge5c5f1f #25 [ 145.105942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 145.115284] task: ffff8800ae239800 task.stack: ffff8801ca2e0000 [ 145.121422] RIP: 0010:[] [] loop_validate_file+0x20d/0x400 [ 145.130395] RSP: 0018:ffff8801ca2e7ad0 EFLAGS: 00010206 [ 145.135845] RAX: 0000000000000036 RBX: dffffc0000000000 RCX: ffff8800ae239800 [ 145.143107] RDX: 0000000000000000 RSI: ffffffff8251d51d RDI: 00000000000001b0 [ 145.150381] RBP: ffff8801ca2e7ae8 R08: ffff8800ae23a128 R09: 0000000000000001 [ 145.157640] R10: 0000000000000000 R11: ffff8800ae239800 R12: 0000000000000000 [ 145.164903] R13: ffff8800b9c861c0 R14: ffff8800b9c861c0 R15: ffff8801d6a2d7d8 [ 145.172164] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000084e7900 [ 145.180376] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 145.186244] CR2: 0000000020ca9ff5 CR3: 00000001d0576000 CR4: 00000000001606f0 [ 145.193505] Stack: [ 145.195639] ffff8801d6a2d680 ffff8801d9489e00 0000000000000004 ffff8801ca2e7b78 [ 145.203740] ffffffff82523aad ffff8801ca2e7af0 ffff880100000000 ffffffff00000000 [ 145.211813] ffffffff81034676 ffff8801d6a2d698 ffffffff814fe102 5ce5133e709abb41 [ 145.219882] Call Trace: [ 145.222458] [] lo_ioctl+0x3ed/0x16c0 [ 145.227818] [] ? save_stack_trace+0x26/0x50 [ 145.233781] [] ? kasan_slab_free+0x72/0xc0 [ 145.239655] [] lo_compat_ioctl+0xb2/0x140 [ 145.245471] [] ? lo_ioctl+0x16c0/0x16c0 [ 145.251088] [] compat_blkdev_ioctl+0x395/0x3a10 [ 145.257399] [] ? cfq_dispatch_requests+0x2fc0/0x2fc0 [ 145.264147] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 145.271091] [] ? debug_check_no_obj_freed+0x2ec/0x940 [ 145.277926] [] ? security_file_ioctl+0x8f/0xc0 [ 145.284165] [] ? cfq_dispatch_requests+0x2fc0/0x2fc0 [ 145.290917] [] compat_SyS_ioctl+0x484/0x2270 [ 145.296989] [] ? putname+0xdb/0x110 [ 145.302268] [] ? compat_SyS_ppoll+0x420/0x420 [ 145.308404] [] ? kmem_cache_free+0x2b4/0x340 [ 145.314455] [] ? putname+0xe0/0x110 [ 145.319729] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 145.325867] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 145.332869] [] ? vmacache_update+0xfe/0x130 [ 145.338855] [] ? do_fast_syscall_32+0xdb/0x8b0 [ 145.345074] [] ? compat_SyS_ppoll+0x420/0x420 [ 145.351225] [] do_fast_syscall_32+0x324/0x8b0 [ 145.357362] [] sysenter_flags_fixed+0xd/0x1a [ 145.363406] 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 [ 145.391809] RIP [] loop_validate_file+0x20d/0x400 [ 145.398613] RSP [ 145.411210] ---[ end trace 5ffc796f92c8d191 ]--- [ 145.421244] Kernel panic - not syncing: Fatal exception [ 145.426892] Dumping ftrace buffer: [ 145.430418] (ftrace buffer empty) [ 145.434104] Kernel Offset: disabled [ 145.437717] Rebooting in 86400 seconds..