[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.239712] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 21.364162] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.738467] random: sshd: uninitialized urandom read (32 bytes read) [ 22.626658] random: sshd: uninitialized urandom read (32 bytes read) [ 728.490859] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. [ 733.931877] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/24 08:09:09 parsed 1 programs [ 735.979800] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/24 08:09:12 executed programs: 0 [ 737.469273] IPVS: ftp: loaded support on port[0] = 21 [ 737.480595] IPVS: ftp: loaded support on port[0] = 21 [ 737.496623] IPVS: ftp: loaded support on port[0] = 21 [ 737.497084] IPVS: ftp: loaded support on port[0] = 21 [ 737.509478] IPVS: ftp: loaded support on port[0] = 21 [ 737.524939] IPVS: ftp: loaded support on port[0] = 21 [ 737.542751] IPVS: ftp: loaded support on port[0] = 21 [ 737.546105] IPVS: ftp: loaded support on port[0] = 21 2018/07/24 08:09:17 executed programs: 378 2018/07/24 08:09:22 executed programs: 830 [ 752.066145] kasan: CONFIG_KASAN_INLINE enabled [ 752.071043] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 752.078484] general protection fault: 0000 [#1] SMP KASAN [ 752.084026] CPU: 1 PID: 7128 Comm: kworker/1:201 Not tainted 4.18.0-rc6+ #63 [ 752.091324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 752.100679] Workqueue: events smc_tcp_listen_work [ 752.105516] RIP: 0010:kernel_accept+0x5a/0x310 [ 752.110087] 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 [ 752.130023] RSP: 0018:ffff8801cc3c75a8 EFLAGS: 00010206 [ 752.135379] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 752.142631] RDX: 0000000000000069 RSI: ffffffff85edda6f RDI: 0000000000000348 [ 752.149887] RBP: ffff8801cc3c75d8 R08: ffff8801d32ae9f8 R09: 0000000000000006 [ 752.157142] R10: ffff8801d32ae1c0 R11: 0000000000000000 R12: ffff8801cc3c7688 [ 752.164413] R13: ffff8801d2625580 R14: 0000000000000000 R15: ffff8801cc3c7708 [ 752.171677] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 752.179894] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 752.185762] CR2: 00007ffa04ae1000 CR3: 00000001ac186000 CR4: 00000000001406e0 [ 752.193029] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 752.200294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 752.207638] Call Trace: [ 752.210215] smc_tcp_listen_work+0x222/0xef0 [ 752.214624] ? smc_link_save_peer_info+0x320/0x320 [ 752.219549] ? __lock_is_held+0xb5/0x140 [ 752.223610] process_one_work+0xc73/0x1ba0 [ 752.227930] ? trace_hardirqs_on+0x10/0x10 [ 752.232167] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 752.236830] ? graph_lock+0x170/0x170 [ 752.240616] ? kasan_check_read+0x11/0x20 [ 752.244747] ? do_raw_spin_unlock+0xa7/0x2f0 [ 752.249140] ? graph_lock+0x170/0x170 [ 752.252922] ? do_raw_spin_lock+0xc1/0x200 [ 752.257158] ? lock_downgrade+0x8f0/0x8f0 [ 752.261302] ? kasan_check_read+0x11/0x20 [ 752.265449] ? do_raw_spin_unlock+0xa7/0x2f0 [ 752.269845] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 752.274426] ? kasan_check_write+0x14/0x20 [ 752.278655] ? do_raw_spin_lock+0xc1/0x200 [ 752.282888] ? trace_hardirqs_off+0xd/0x10 [ 752.287113] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 752.292222] ? __wake_up_common_lock+0x1d0/0x330 [ 752.296970] ? __wake_up_common+0x740/0x740 [ 752.301305] ? need_to_create_worker+0x1c8/0x280 [ 752.306058] ? del_timer+0x150/0x150 [ 752.309763] ? kasan_check_write+0x14/0x20 [ 752.313982] ? do_raw_spin_lock+0xc1/0x200 [ 752.318203] worker_thread+0x189/0x13c0 [ 752.322171] ? process_one_work+0x1ba0/0x1ba0 [ 752.326654] ? graph_lock+0x170/0x170 [ 752.330448] ? graph_lock+0x170/0x170 [ 752.334245] ? find_held_lock+0x36/0x1c0 [ 752.338292] ? find_held_lock+0x36/0x1c0 [ 752.342357] ? lock_downgrade+0x8f0/0x8f0 [ 752.346492] ? kasan_check_read+0x11/0x20 [ 752.350637] ? do_raw_spin_unlock+0xa7/0x2f0 [ 752.355057] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 752.360145] ? __kthread_parkme+0x58/0x1b0 [ 752.364392] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 752.369402] ? trace_hardirqs_on+0xd/0x10 [ 752.373542] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 752.379065] ? __kthread_parkme+0x106/0x1b0 [ 752.383485] kthread+0x345/0x410 [ 752.386842] ? process_one_work+0x1ba0/0x1ba0 [ 752.391330] ? kthread_bind+0x40/0x40 [ 752.395127] ret_from_fork+0x3a/0x50 [ 752.398831] Modules linked in: [ 752.402008] Dumping ftrace buffer: [ 752.405529] (ftrace buffer empty) [ 752.409311] ---[ end trace cf4f3df70ecddf11 ]--- 2018/07/24 08:09:27 executed programs: 1254 [ 752.414131] RIP: 0010:kernel_accept+0x5a/0x310 [ 752.418757] 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 [ 752.438081] RSP: 0018:ffff8801cc3c75a8 EFLAGS: 00010206 [ 752.443494] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 752.450808] RDX: 0000000000000069 RSI: ffffffff85edda6f RDI: 0000000000000348 [ 752.458122] RBP: ffff8801cc3c75d8 R08: ffff8801d32ae9f8 R09: 0000000000000006 [ 752.465429] R10: ffff8801d32ae1c0 R11: 0000000000000000 R12: ffff8801cc3c7688 [ 752.472769] R13: ffff8801d2625580 R14: 0000000000000000 R15: ffff8801cc3c7708 [ 752.480078] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 752.488349] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 752.494273] CR2: 00007ffa04ae1000 CR3: 0000000008e6a000 CR4: 00000000001406e0 [ 752.501608] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 752.508919] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 752.516233] Kernel panic - not syncing: Fatal exception [ 752.522222] Dumping ftrace buffer: [ 752.525755] (ftrace buffer empty) [ 752.529638] Kernel Offset: disabled [ 752.533243] Rebooting in 86400 seconds..