[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.894190] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.159882] random: sshd: uninitialized urandom read (32 bytes read) [ 26.493082] random: sshd: uninitialized urandom read (32 bytes read) [ 27.036740] random: sshd: uninitialized urandom read (32 bytes read) [ 104.345080] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.4' (ECDSA) to the list of known hosts. [ 109.961639] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/18 10:00:21 parsed 1 programs [ 111.215911] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/18 10:00:22 executed programs: 0 [ 112.352517] IPVS: ftp: loaded support on port[0] = 21 [ 112.570434] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.577216] bridge0: port 1(bridge_slave_0) entered disabled state [ 112.584781] device bridge_slave_0 entered promiscuous mode [ 112.601654] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.608019] bridge0: port 2(bridge_slave_1) entered disabled state [ 112.615292] device bridge_slave_1 entered promiscuous mode [ 112.632023] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 112.648263] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 112.693252] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 112.712236] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 112.779103] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 112.786525] team0: Port device team_slave_0 added [ 112.801738] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 112.809115] team0: Port device team_slave_1 added [ 112.824878] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 112.841551] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 112.857340] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 112.874258] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 112.998823] bridge0: port 2(bridge_slave_1) entered blocking state [ 113.005292] bridge0: port 2(bridge_slave_1) entered forwarding state [ 113.012248] bridge0: port 1(bridge_slave_0) entered blocking state [ 113.018651] bridge0: port 1(bridge_slave_0) entered forwarding state [ 113.468756] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 113.474947] 8021q: adding VLAN 0 to HW filter on device bond0 [ 113.521223] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 113.547029] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 113.575890] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 113.582062] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 113.589794] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 113.630480] 8021q: adding VLAN 0 to HW filter on device team0 2018/08/18 10:00:27 executed programs: 134 2018/08/18 10:00:32 executed programs: 330 2018/08/18 10:00:37 executed programs: 528 2018/08/18 10:00:42 executed programs: 721 2018/08/18 10:00:47 executed programs: 920 2018/08/18 10:00:52 executed programs: 1119 2018/08/18 10:00:57 executed programs: 1320 2018/08/18 10:01:02 executed programs: 1515 2018/08/18 10:01:08 executed programs: 1715 [ 157.559822] WARNING: CPU: 1 PID: 11654 at fs/notify/mark.c:139 __fsnotify_recalc_mask+0x2d7/0x350 [ 157.569074] Kernel panic - not syncing: panic_on_warn set ... [ 157.569074] [ 157.576459] CPU: 1 PID: 11654 Comm: syz-executor0 Not tainted 4.18.0+ #195 [ 157.583482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 157.592856] Call Trace: [ 157.595470] dump_stack+0x1c9/0x2b4 [ 157.599113] ? dump_stack_print_info.cold.2+0x52/0x52 [ 157.604322] panic+0x238/0x4e7 [ 157.607527] ? add_taint.cold.5+0x16/0x16 [ 157.611688] ? __warn.cold.8+0x148/0x1ba [ 157.615775] ? __warn.cold.8+0x117/0x1ba [ 157.619855] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 157.624714] __warn.cold.8+0x163/0x1ba [ 157.628609] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 157.633466] report_bug+0x252/0x2d0 [ 157.637122] do_error_trap+0x1fc/0x4d0 [ 157.641022] ? math_error+0x3e0/0x3e0 [ 157.644824] ? rcu_is_watching+0x8c/0x150 [ 157.648988] ? rcu_pm_notify+0xc0/0xc0 [ 157.652896] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 157.657756] do_invalid_op+0x1b/0x20 [ 157.661473] invalid_op+0x14/0x20 [ 157.664932] RIP: 0010:__fsnotify_recalc_mask+0x2d7/0x350 [ 157.670389] Code: 90 00 00 00 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 eb 2d a2 ff 49 83 ec 04 eb 82 e8 e0 2d a2 ff 0f 0b e8 d9 2d a2 ff <0f> 0b eb a5 e8 60 24 e1 ff e9 11 ff ff ff 48 89 df e8 f3 24 e1 ff [ 157.689314] RSP: 0018:ffff8801c84675c8 EFLAGS: 00010293 [ 157.694734] RAX: ffff8801c867a240 RBX: 0000000000000002 RCX: ffffffff81dabc96 [ 157.702007] RDX: 0000000000000000 RSI: ffffffff81dabd67 RDI: 0000000000000005 [ 157.709279] RBP: ffff8801c8467658 R08: ffff8801c867a240 R09: ffffed00371a2c0e [ 157.716552] R10: ffffed00371a2c0e R11: ffff8801b8d16073 R12: dffffc0000000000 [ 157.723824] R13: ffff8801b8d16070 R14: 0000000000000000 R15: 0000000000000000 [ 157.731142] ? __fsnotify_recalc_mask+0x206/0x350 [ 157.735990] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 157.740854] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 157.745712] ? fsnotify_fasync+0x80/0x80 [ 157.749787] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 157.755336] fsnotify_put_mark+0x523/0xab0 [ 157.759591] ? fsnotify_recalc_mask+0xc0/0xc0 [ 157.764098] ? lock_downgrade+0x8f0/0x8f0 [ 157.768267] ? kasan_check_read+0x11/0x20 [ 157.772426] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 157.777019] ? kasan_check_write+0x14/0x20 [ 157.781260] ? do_raw_spin_lock+0xc1/0x200 [ 157.785508] fsnotify_destroy_marks+0x2d1/0x5c0 [ 157.790182] ? kasan_check_read+0x11/0x20 [ 157.794359] ? fsnotify_clear_marks_by_group+0x640/0x640 [ 157.799872] ? find_held_lock+0x36/0x1c0 [ 157.803965] __fsnotify_inode_delete+0x19/0x20 [ 157.808554] dentry_unlink_inode+0x48b/0x5e0 [ 157.812998] ? d_lru_add+0x120/0x120 [ 157.816735] ? kasan_check_read+0x11/0x20 [ 157.820900] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 157.825490] ? lockref_get_not_dead+0x90/0x90 [ 157.830009] __dentry_kill+0x44c/0x7a0 [ 157.833921] ? d_drop+0x70/0x70 [ 157.837209] ? do_raw_spin_lock+0x200/0x200 [ 157.841548] ? kasan_check_read+0x11/0x20 [ 157.845731] dentry_kill+0xc9/0x5a0 [ 157.849374] dput.part.26+0x66b/0x7a0 [ 157.853214] ? shrink_dcache_sb+0x350/0x350 [ 157.857550] dput+0x15/0x20 [ 157.860494] __fput+0x4c2/0x860 [ 157.863789] ? file_free_rcu+0x90/0x90 [ 157.867683] ? _raw_spin_unlock_irq+0x27/0x70 [ 157.872213] ____fput+0x15/0x20 [ 157.875503] task_work_run+0x1e8/0x2a0 [ 157.879406] ? task_work_cancel+0x240/0x240 [ 157.883735] ? exit_to_usermode_loop+0x8c/0x380 [ 157.888424] exit_to_usermode_loop+0x318/0x380 [ 157.893014] ? syscall_slow_exit_work+0x500/0x500 [ 157.897880] ? do_syscall_64+0x9a/0x820 [ 157.901881] do_syscall_64+0x6be/0x820 [ 157.905780] ? finish_task_switch+0x1d3/0x870 [ 157.910282] ? syscall_return_slowpath+0x5e0/0x5e0 [ 157.915219] ? syscall_return_slowpath+0x31d/0x5e0 [ 157.920157] ? __switch_to_asm+0x34/0x70 [ 157.924226] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 157.929606] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 157.934463] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 157.939653] RIP: 0033:0x457089 [ 157.942857] Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 157.961766] RSP: 002b:00007f5383dbfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 [ 157.969506] RAX: 000000000000000a RBX: 00007f5383dc06d4 RCX: 0000000000457089 [ 157.976785] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000008 [ 157.984057] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 157.991330] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 157.998627] R13: 00000000004cb6d0 R14: 00000000004c31f3 R15: 0000000000000000 [ 158.006376] Dumping ftrace buffer: [ 158.010009] (ftrace buffer empty) [ 158.013703] Kernel Offset: disabled [ 158.017316] Rebooting in 86400 seconds..