[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.841677] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.230461] random: sshd: uninitialized urandom read (32 bytes read) [ 26.437938] random: sshd: uninitialized urandom read (32 bytes read) [ 26.978846] random: sshd: uninitialized urandom read (32 bytes read) [ 44.345119] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.23' (ECDSA) to the list of known hosts. [ 49.835995] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/18 09:18:01 parsed 1 programs [ 50.943612] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/18 09:18:03 executed programs: 0 [ 52.231336] IPVS: ftp: loaded support on port[0] = 21 [ 52.438396] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.445005] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.452902] device bridge_slave_0 entered promiscuous mode [ 52.469391] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.475820] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.483078] device bridge_slave_1 entered promiscuous mode [ 52.498752] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 52.514685] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 52.557250] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.575525] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.644834] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.652233] team0: Port device team_slave_0 added [ 52.668377] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.675533] team0: Port device team_slave_1 added [ 52.691454] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.708017] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.723642] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.740739] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.866910] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.873434] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.880578] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.886960] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.327852] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 53.334055] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.379301] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.411662] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.431356] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 53.437602] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 53.444964] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.482774] 8021q: adding VLAN 0 to HW filter on device team0 2018/08/18 09:18:08 executed programs: 140 2018/08/18 09:18:13 executed programs: 344 2018/08/18 09:18:18 executed programs: 555 2018/08/18 09:18:23 executed programs: 767 2018/08/18 09:18:28 executed programs: 977 2018/08/18 09:18:33 executed programs: 1187 2018/08/18 09:18:38 executed programs: 1397 2018/08/18 09:18:43 executed programs: 1607 [ 97.021175] WARNING: CPU: 1 PID: 12015 at fs/notify/mark.c:139 __fsnotify_recalc_mask+0x2d7/0x350 [ 97.030360] Kernel panic - not syncing: panic_on_warn set ... [ 97.030360] [ 97.037732] CPU: 1 PID: 12015 Comm: syz-executor0 Not tainted 4.18.0+ #195 [ 97.044744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 97.054109] Call Trace: [ 97.056796] dump_stack+0x1c9/0x2b4 [ 97.060439] ? dump_stack_print_info.cold.2+0x52/0x52 [ 97.065648] panic+0x238/0x4e7 [ 97.068847] ? add_taint.cold.5+0x16/0x16 [ 97.073009] ? __warn.cold.8+0x148/0x1ba [ 97.077080] ? __warn.cold.8+0x117/0x1ba [ 97.081157] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 97.086005] __warn.cold.8+0x163/0x1ba [ 97.089906] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 97.094767] report_bug+0x252/0x2d0 [ 97.098404] do_error_trap+0x1fc/0x4d0 [ 97.102300] ? math_error+0x3e0/0x3e0 [ 97.106102] ? rcu_is_watching+0x8c/0x150 [ 97.110281] ? rcu_pm_notify+0xc0/0xc0 [ 97.114446] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 97.119304] do_invalid_op+0x1b/0x20 [ 97.123025] invalid_op+0x14/0x20 [ 97.126487] RIP: 0010:__fsnotify_recalc_mask+0x2d7/0x350 [ 97.131948] 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 [ 97.150849] RSP: 0018:ffff8801b509f5c8 EFLAGS: 00010293 [ 97.156224] RAX: ffff8801b2c0a180 RBX: 0000000000000002 RCX: ffffffff81dabc96 [ 97.163515] RDX: 0000000000000000 RSI: ffffffff81dabd67 RDI: 0000000000000005 [ 97.170783] RBP: ffff8801b509f658 R08: ffff8801b2c0a180 R09: ffffed00398cb796 [ 97.178188] R10: ffffed00398cb796 R11: ffff8801cc65bcb3 R12: dffffc0000000000 [ 97.185462] R13: ffff8801cc65bcb0 R14: 0000000000000000 R15: 0000000000000000 [ 97.192752] ? __fsnotify_recalc_mask+0x206/0x350 [ 97.197600] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 97.202456] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 97.207310] ? fsnotify_fasync+0x80/0x80 [ 97.211380] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 97.216934] fsnotify_put_mark+0x523/0xab0 [ 97.221179] ? fsnotify_recalc_mask+0xc0/0xc0 [ 97.225679] ? lock_downgrade+0x8f0/0x8f0 [ 97.229836] ? kasan_check_read+0x11/0x20 [ 97.233991] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 97.238577] ? kasan_check_write+0x14/0x20 [ 97.242817] ? do_raw_spin_lock+0xc1/0x200 [ 97.247676] fsnotify_destroy_marks+0x2d1/0x5c0 [ 97.252353] ? kasan_check_read+0x11/0x20 [ 97.256507] ? fsnotify_clear_marks_by_group+0x640/0x640 [ 97.262049] ? find_held_lock+0x36/0x1c0 [ 97.266146] __fsnotify_inode_delete+0x19/0x20 [ 97.270737] dentry_unlink_inode+0x48b/0x5e0 [ 97.275152] ? d_lru_add+0x120/0x120 [ 97.278871] ? kasan_check_read+0x11/0x20 [ 97.283026] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 97.287613] ? lockref_get_not_dead+0x90/0x90 [ 97.292121] __dentry_kill+0x44c/0x7a0 [ 97.296016] ? d_drop+0x70/0x70 [ 97.299300] ? do_raw_spin_lock+0x200/0x200 [ 97.303630] ? kasan_check_read+0x11/0x20 [ 97.307789] dentry_kill+0xc9/0x5a0 [ 97.311428] dput.part.26+0x66b/0x7a0 [ 97.315248] ? shrink_dcache_sb+0x350/0x350 [ 97.319672] dput+0x15/0x20 [ 97.322608] __fput+0x4c2/0x860 [ 97.325900] ? file_free_rcu+0x90/0x90 [ 97.329806] ? _raw_spin_unlock_irq+0x27/0x70 [ 97.334323] ____fput+0x15/0x20 [ 97.337612] task_work_run+0x1e8/0x2a0 [ 97.341507] ? task_work_cancel+0x240/0x240 [ 97.345860] ? exit_to_usermode_loop+0x8c/0x380 [ 97.350542] exit_to_usermode_loop+0x318/0x380 [ 97.355135] ? syscall_slow_exit_work+0x500/0x500 [ 97.359988] ? do_syscall_64+0x9a/0x820 [ 97.363970] do_syscall_64+0x6be/0x820 [ 97.367863] ? finish_task_switch+0x1d3/0x870 [ 97.372362] ? syscall_return_slowpath+0x5e0/0x5e0 [ 97.377299] ? syscall_return_slowpath+0x31d/0x5e0 [ 97.382236] ? __switch_to_asm+0x34/0x70 [ 97.386306] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 97.391678] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 97.396530] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.401721] RIP: 0033:0x457089 [ 97.404955] 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 [ 97.423857] RSP: 002b:00007fcfa3e50c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 [ 97.431572] RAX: 000000000000000a RBX: 00007fcfa3e516d4 RCX: 0000000000457089 [ 97.438842] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000008 [ 97.446112] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 97.453379] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 97.460647] R13: 00000000004cb6d0 R14: 00000000004c31f3 R15: 0000000000000000 [ 97.468472] Dumping ftrace buffer: [ 97.472081] (ftrace buffer empty) [ 97.475777] Kernel Offset: disabled [ 97.479403] Rebooting in 86400 seconds..