[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.906135] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.787521] random: sshd: uninitialized urandom read (32 bytes read) [ 20.242580] random: sshd: uninitialized urandom read (32 bytes read) [ 20.981565] random: sshd: uninitialized urandom read (32 bytes read) [ 23.016807] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. [ 28.444053] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/16 09:04:15 parsed 1 programs [ 29.410154] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/16 09:04:17 executed programs: 0 [ 30.499749] IPVS: ftp: loaded support on port[0] = 21 [ 30.502060] IPVS: ftp: loaded support on port[0] = 21 [ 30.518650] IPVS: ftp: loaded support on port[0] = 21 [ 30.524331] IPVS: ftp: loaded support on port[0] = 21 [ 30.537179] IPVS: ftp: loaded support on port[0] = 21 [ 30.549551] IPVS: ftp: loaded support on port[0] = 21 [ 30.562625] IPVS: ftp: loaded support on port[0] = 21 [ 30.574097] IPVS: ftp: loaded support on port[0] = 21 [ 32.491460] kasan: CONFIG_KASAN_INLINE enabled [ 32.496081] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.503426] general protection fault: 0000 [#1] SMP KASAN [ 32.508943] CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 4.18.0-rc5-next-20180716+ #8 [ 32.516888] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.526242] Workqueue: events p9_poll_workfn [ 32.530636] RIP: 0010:do_raw_spin_unlock+0x65/0x2f0 [ 32.535635] Code: 0a bd 88 48 c7 85 78 ff ff ff b3 8a b5 41 48 c7 45 88 d0 3c 60 81 c7 02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 [ 32.554765] RSP: 0018:ffff8801d945f288 EFLAGS: 00010047 [ 32.560106] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8770a045 [ 32.567353] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004 [ 32.574615] RBP: ffff8801d945f310 R08: 1ffff1003b28be45 R09: ffffed0035e7bd88 [ 32.581863] R10: ffffed0035e7bd88 R11: ffff8801af3dec43 R12: 0000000000000000 [ 32.589111] R13: 1ffff1003b28be51 R14: ffff8801d945f2e8 R15: ffff8801c5811d50 [ 32.596462] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 32.604666] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.610524] CR2: 000000000072c029 CR3: 00000001b19fd000 CR4: 00000000001406e0 [ 32.617775] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.625038] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.632286] Call Trace: [ 32.634854] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 32.639425] ? do_raw_spin_lock+0x1a7/0x200 [ 32.643729] _raw_spin_unlock_irqrestore+0x27/0xc0 [ 32.648638] p9_conn_cancel+0x9b6/0xd30 [ 32.652604] ? p9_fd_cancelled+0x2f0/0x2f0 [ 32.656817] ? p9_conn_cancel+0x920/0xd30 [ 32.660961] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.665701] ? retint_kernel+0x10/0x10 [ 32.669577] ? p9_poll_workfn+0x42d/0x6d0 [ 32.673718] ? p9_fd_poll+0x27/0x2b0 [ 32.677410] ? p9_fd_poll+0x40/0x2b0 [ 32.681116] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.686646] p9_poll_workfn+0x4b2/0x6d0 [ 32.690599] ? p9_read_work+0x1060/0x1060 [ 32.694743] ? lock_acquire+0x1e4/0x540 [ 32.698696] ? process_one_work+0xb9b/0x1ba0 [ 32.703099] ? kasan_check_read+0x11/0x20 [ 32.707240] ? lock_release+0xa30/0xa30 [ 32.711194] ? kasan_check_read+0x11/0x20 [ 32.715321] ? do_raw_spin_unlock+0xa7/0x2f0 [ 32.719706] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 32.724266] ? read_word_at_a_time+0x20/0x20 [ 32.728654] ? account_kernel_stack+0x2bd/0x410 [ 32.733305] process_one_work+0xc73/0x1ba0 [ 32.737522] ? trace_hardirqs_on+0x10/0x10 [ 32.741752] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 32.746400] ? lock_repin_lock+0x430/0x430 [ 32.750621] ? __sched_text_start+0x8/0x8 [ 32.754843] ? lock_downgrade+0x8f0/0x8f0 [ 32.758970] ? graph_lock+0x170/0x170 [ 32.762749] ? graph_lock+0x170/0x170 [ 32.766536] ? lock_acquire+0x1e4/0x540 [ 32.770498] ? worker_thread+0x3dc/0x13c0 [ 32.774627] ? lock_downgrade+0x8f0/0x8f0 [ 32.778756] ? lock_release+0xa30/0xa30 [ 32.782711] ? kasan_check_read+0x11/0x20 [ 32.786838] ? do_raw_spin_unlock+0xa7/0x2f0 [ 32.791225] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 32.795786] ? kasan_check_write+0x14/0x20 [ 32.800008] ? do_raw_spin_lock+0xc1/0x200 [ 32.804222] worker_thread+0x189/0x13c0 [ 32.808180] ? process_one_work+0x1ba0/0x1ba0 [ 32.812670] ? graph_lock+0x170/0x170 [ 32.816450] ? graph_lock+0x170/0x170 [ 32.820229] ? find_held_lock+0x36/0x1c0 [ 32.824270] ? find_held_lock+0x36/0x1c0 [ 32.828313] ? lock_downgrade+0x8f0/0x8f0 [ 32.832454] ? kasan_check_read+0x11/0x20 [ 32.836593] ? do_raw_spin_unlock+0xa7/0x2f0 [ 32.840984] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 32.846077] ? __kthread_parkme+0x58/0x1b0 [ 32.850290] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.855288] ? trace_hardirqs_on+0xd/0x10 [ 32.859419] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 32.864935] ? __kthread_parkme+0x106/0x1b0 [ 32.869235] kthread+0x345/0x410 [ 32.872581] ? process_one_work+0x1ba0/0x1ba0 [ 32.877053] ? kthread_bind+0x40/0x40 [ 32.880847] ret_from_fork+0x3a/0x50 [ 32.884537] Modules linked in: [ 32.887712] Dumping ftrace buffer: [ 32.891226] (ftrace buffer empty) [ 32.894921] ---[ end trace 4d86351f63a12683 ]--- [ 32.899658] RIP: 0010:do_raw_spin_unlock+0x65/0x2f0 [ 32.904647] Code: 0a bd 88 48 c7 85 78 ff ff ff b3 8a b5 41 48 c7 45 88 d0 3c 60 81 c7 02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 [ 32.923776] RSP: 0018:ffff8801d945f288 EFLAGS: 00010047 [ 32.929118] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8770a045 [ 32.936833] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004 [ 32.944084] RBP: ffff8801d945f310 R08: 1ffff1003b28be45 R09: ffffed0035e7bd88 [ 32.951333] R10: ffffed0035e7bd88 R11: ffff8801af3dec43 R12: 0000000000000000 [ 32.958583] R13: 1ffff1003b28be51 R14: ffff8801d945f2e8 R15: ffff8801c5811d50 [ 32.965834] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 32.974052] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.979934] CR2: 000000000072c029 CR3: 00000001b19fd000 CR4: 00000000001406e0 [ 32.987188] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.994435] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.001683] Kernel panic - not syncing: Fatal exception [ 33.007522] Dumping ftrace buffer: [ 33.011039] (ftrace buffer empty) [ 33.014741] Kernel Offset: disabled [ 33.018346] Rebooting in 86400 seconds..