[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.192735] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.030075] random: sshd: uninitialized urandom read (32 bytes read) [ 23.407241] random: sshd: uninitialized urandom read (32 bytes read) [ 24.336794] random: sshd: uninitialized urandom read (32 bytes read) [ 66.374689] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts. [ 71.825688] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/23 02:55:20 parsed 1 programs [ 73.216858] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/23 02:55:22 executed programs: 0 [ 74.351290] IPVS: ftp: loaded support on port[0] = 21 [ 74.598446] kasan: CONFIG_KASAN_INLINE enabled [ 74.603186] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 74.610603] general protection fault: 0000 [#1] SMP KASAN [ 74.616122] CPU: 1 PID: 4615 Comm: kworker/1:9 Not tainted 4.18.0-rc6+ #63 [ 74.623109] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.632449] Workqueue: events smc_tcp_listen_work [ 74.637277] RIP: 0010:kernel_accept+0x5a/0x310 [ 74.641830] Code: 48 c1 ea 03 80 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 20 48 8d bb 48 03 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 14 02 00 00 48 8d 7b 10 0f b6 [ 74.660946] RSP: 0018:ffff8801d7d9f5a8 EFLAGS: 00010206 [ 74.666288] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.673533] RDX: 0000000000000069 RSI: ffffffff85edda6f RDI: 0000000000000348 [ 74.680781] RBP: ffff8801d7d9f5d8 R08: ffff8801d7f80938 R09: 0000000000000006 [ 74.688029] R10: ffff8801d7f80100 R11: 0000000000000000 R12: ffff8801d7d9f688 [ 74.695292] R13: ffff8801a8018500 R14: 0000000000000000 R15: ffff8801d7d9f708 [ 74.702540] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 74.710747] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.716623] CR2: 00007fe6744b5000 CR3: 0000000008e6a000 CR4: 00000000001406e0 [ 74.723871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.731117] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.738359] Call Trace: [ 74.740929] smc_tcp_listen_work+0x222/0xef0 [ 74.745317] ? smc_link_save_peer_info+0x320/0x320 [ 74.750231] ? __lock_is_held+0xb5/0x140 [ 74.754274] process_one_work+0xc73/0x1ba0 [ 74.758488] ? trace_hardirqs_on+0x10/0x10 [ 74.762714] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 74.767358] ? lock_repin_lock+0x430/0x430 [ 74.771574] ? __sched_text_start+0x8/0x8 [ 74.775708] ? lock_downgrade+0x8f0/0x8f0 [ 74.779834] ? graph_lock+0x170/0x170 [ 74.783615] ? graph_lock+0x170/0x170 [ 74.787398] ? lock_acquire+0x1e4/0x540 [ 74.791365] ? worker_thread+0x3dc/0x13c0 [ 74.795490] ? lock_downgrade+0x8f0/0x8f0 [ 74.799615] ? lock_release+0xa30/0xa30 [ 74.803568] ? kasan_check_read+0x11/0x20 [ 74.807692] ? do_raw_spin_unlock+0xa7/0x2f0 [ 74.812087] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 74.816646] ? kasan_check_write+0x14/0x20 [ 74.820867] ? do_raw_spin_lock+0xc1/0x200 [ 74.825093] worker_thread+0x189/0x13c0 [ 74.829047] ? process_one_work+0x1ba0/0x1ba0 [ 74.833521] ? graph_lock+0x170/0x170 [ 74.837299] ? __sched_text_start+0x8/0x8 [ 74.841426] ? graph_lock+0x170/0x170 [ 74.845203] ? find_held_lock+0x36/0x1c0 [ 74.849244] ? find_held_lock+0x36/0x1c0 [ 74.853285] ? lock_downgrade+0x8f0/0x8f0 [ 74.857412] ? kasan_check_read+0x11/0x20 [ 74.861536] ? do_raw_spin_unlock+0xa7/0x2f0 [ 74.865920] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 74.870482] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 74.875559] ? __kthread_parkme+0x58/0x1b0 [ 74.879771] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 74.884767] ? trace_hardirqs_on+0xd/0x10 [ 74.888895] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 74.894412] ? __kthread_parkme+0x106/0x1b0 [ 74.898711] kthread+0x345/0x410 [ 74.902053] ? process_one_work+0x1ba0/0x1ba0 [ 74.906522] ? kthread_bind+0x40/0x40 [ 74.910301] ret_from_fork+0x3a/0x50 [ 74.913992] Modules linked in: [ 74.917163] Dumping ftrace buffer: [ 74.920676] (ftrace buffer empty) [ 74.924443] ---[ end trace feb9eff943c30de0 ]--- [ 74.929204] RIP: 0010:kernel_accept+0x5a/0x310 [ 74.933776] Code: 48 c1 ea 03 80 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 20 48 8d bb 48 03 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 14 02 00 00 48 8d 7b 10 0f b6 [ 74.952899] RSP: 0018:ffff8801d7d9f5a8 EFLAGS: 00010206 [ 74.958260] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 74.965519] RDX: 0000000000000069 RSI: ffffffff85edda6f RDI: 0000000000000348 [ 74.972786] RBP: ffff8801d7d9f5d8 R08: ffff8801d7f80938 R09: 0000000000000006 [ 74.980065] R10: ffff8801d7f80100 R11: 0000000000000000 R12: ffff8801d7d9f688 [ 74.987331] R13: ffff8801a8018500 R14: 0000000000000000 R15: ffff8801d7d9f708 [ 74.994591] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 75.002812] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.008684] CR2: 00007fe6744b5000 CR3: 0000000008e6a000 CR4: 00000000001406e0 [ 75.015951] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.023221] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.030488] Kernel panic - not syncing: Fatal exception [ 75.036228] Dumping ftrace buffer: [ 75.039739] (ftrace buffer empty) [ 75.043424] Kernel Offset: disabled [ 75.047025] Rebooting in 86400 seconds..