[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 22.941008] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.586489] random: sshd: uninitialized urandom read (32 bytes read) [ 25.988240] random: sshd: uninitialized urandom read (32 bytes read) [ 26.518399] random: sshd: uninitialized urandom read (32 bytes read) [ 26.687232] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts. [ 32.202112] random: sshd: uninitialized urandom read (32 bytes read) 2018/08/18 10:02:42 parsed 1 programs [ 33.889824] random: cc1: uninitialized urandom read (8 bytes read) 2018/08/18 10:02:44 executed programs: 0 [ 35.639762] IPVS: ftp: loaded support on port[0] = 21 [ 35.852612] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.859060] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.866610] device bridge_slave_0 entered promiscuous mode [ 35.884265] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.890664] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.898031] device bridge_slave_1 entered promiscuous mode [ 35.914287] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 35.931917] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 35.975768] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.995382] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 36.063183] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 36.070633] team0: Port device team_slave_0 added [ 36.086236] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 36.093530] team0: Port device team_slave_1 added [ 36.110240] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.126972] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.143314] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 36.160165] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 36.290201] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.296685] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.303747] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.310194] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.778024] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 36.784144] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.832520] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.841168] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.889055] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 36.895276] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 36.902545] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.945790] 8021q: adding VLAN 0 to HW filter on device team0 2018/08/18 10:02:49 executed programs: 122 [ 42.035796] WARNING: CPU: 0 PID: 5459 at fs/notify/mark.c:139 __fsnotify_recalc_mask+0x2d7/0x350 [ 42.044935] Kernel panic - not syncing: panic_on_warn set ... [ 42.044935] [ 42.052321] CPU: 0 PID: 5459 Comm: syz-executor0 Not tainted 4.18.0+ #98 [ 42.059168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.068537] Call Trace: [ 42.071142] dump_stack+0x1c9/0x2b4 [ 42.074801] ? dump_stack_print_info.cold.2+0x52/0x52 [ 42.080032] panic+0x238/0x4e7 [ 42.083239] ? add_taint.cold.5+0x16/0x16 [ 42.087410] ? __warn.cold.8+0x148/0x1ba [ 42.091479] ? __warn.cold.8+0x117/0x1ba [ 42.095557] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 42.100412] __warn.cold.8+0x163/0x1ba [ 42.104314] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 42.109172] report_bug+0x252/0x2d0 [ 42.112858] do_error_trap+0x1fc/0x4d0 [ 42.116773] ? math_error+0x3e0/0x3e0 [ 42.120611] ? rcu_pm_notify+0xc0/0xc0 [ 42.124515] ? memset+0x31/0x40 [ 42.127832] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.132695] do_invalid_op+0x1b/0x20 [ 42.136417] invalid_op+0x14/0x20 [ 42.139882] RIP: 0010:__fsnotify_recalc_mask+0x2d7/0x350 [ 42.145350] 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 [ 42.164276] RSP: 0018:ffff8801b2ad7578 EFLAGS: 00010293 [ 42.169661] RAX: ffff8801c9882080 RBX: 0000000000000002 RCX: ffffffff81dabc96 [ 42.176944] RDX: 0000000000000000 RSI: ffffffff81dabd67 RDI: 0000000000000005 [ 42.184217] RBP: ffff8801b2ad7608 R08: ffff8801c9882080 R09: ffffed003a0ca662 [ 42.191494] R10: ffffed003a0ca662 R11: ffff8801d0653313 R12: dffffc0000000000 [ 42.198769] R13: ffff8801d0653310 R14: 0000000000000000 R15: 0000000000000000 [ 42.206083] ? __fsnotify_recalc_mask+0x206/0x350 [ 42.210955] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 42.215832] ? __fsnotify_recalc_mask+0x2d7/0x350 [ 42.220693] ? fsnotify_fasync+0x80/0x80 [ 42.224775] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.230351] fsnotify_put_mark+0x523/0xab0 [ 42.234608] ? fsnotify_recalc_mask+0xc0/0xc0 [ 42.239119] ? lock_downgrade+0x8f0/0x8f0 [ 42.243289] ? kasan_check_read+0x11/0x20 [ 42.247448] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 42.252041] ? kasan_check_write+0x14/0x20 [ 42.256287] ? do_raw_spin_lock+0xc1/0x200 [ 42.260575] fsnotify_destroy_marks+0x2d1/0x5c0 [ 42.265253] ? kasan_check_read+0x11/0x20 [ 42.269419] ? fsnotify_clear_marks_by_group+0x640/0x640 [ 42.274893] ? find_held_lock+0x36/0x1c0 [ 42.278974] __fsnotify_inode_delete+0x19/0x20 [ 42.283567] dentry_unlink_inode+0x48b/0x5e0 [ 42.287992] ? d_lru_add+0x120/0x120 [ 42.291728] ? kasan_check_read+0x11/0x20 [ 42.295904] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 42.300495] ? lockref_get_not_dead+0x90/0x90 [ 42.305021] __dentry_kill+0x44c/0x7a0 [ 42.308960] ? d_drop+0x70/0x70 [ 42.312274] ? do_raw_spin_lock+0x200/0x200 [ 42.316618] ? kasan_check_read+0x11/0x20 [ 42.320795] dentry_kill+0xc9/0x5a0 [ 42.324445] dput.part.26+0x66b/0x7a0 [ 42.328260] ? shrink_dcache_sb+0x350/0x350 [ 42.332634] dput+0x15/0x20 [ 42.335576] __fput+0x4c2/0x860 [ 42.338904] ? file_free_rcu+0x90/0x90 [ 42.342879] ? _raw_spin_unlock_irq+0x27/0x70 [ 42.347427] ____fput+0x15/0x20 [ 42.350721] task_work_run+0x1e8/0x2a0 [ 42.354638] ? task_work_cancel+0x240/0x240 [ 42.358990] ? exit_to_usermode_loop+0x8c/0x380 [ 42.363695] exit_to_usermode_loop+0x318/0x380 [ 42.368302] ? syscall_slow_exit_work+0x500/0x500 [ 42.373162] ? do_fast_syscall_32+0x150/0xfb2 [ 42.377681] do_fast_syscall_32+0xcd5/0xfb2 [ 42.382019] ? do_int80_syscall_32+0x890/0x890 [ 42.386608] ? _raw_spin_unlock_irq+0x27/0x70 [ 42.391114] ? finish_task_switch+0x1d3/0x870 [ 42.395627] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.401183] ? syscall_return_slowpath+0x31d/0x5e0 [ 42.406126] ? __switch_to_asm+0x34/0x70 [ 42.410210] ? sysret32_from_system_call+0x5/0x46 [ 42.415071] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.419943] entry_SYSENTER_compat+0x70/0x7f [ 42.424360] RIP: 0023:0xf7f87ca9 [ 42.427748] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 42.446672] RSP: 002b:00000000f7f830cc EFLAGS: 00000296 ORIG_RAX: 000000000000003f [ 42.454401] RAX: 000000000000000a RBX: 0000000000000008 RCX: 000000000000000a [ 42.461691] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 42.468976] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 42.476257] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 42.483534] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 42.491352] Dumping ftrace buffer: [ 42.495024] (ftrace buffer empty) [ 42.498727] Kernel Offset: disabled [ 42.502350] Rebooting in 86400 seconds..