[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.290408] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.994380] random: sshd: uninitialized urandom read (32 bytes read) [ 20.282765] random: sshd: uninitialized urandom read (32 bytes read) [ 20.976661] random: sshd: uninitialized urandom read (32 bytes read) [ 21.130908] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.24' (ECDSA) to the list of known hosts. [ 26.584970] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program [ 26.675427] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.618022] kasan: CONFIG_KASAN_INLINE enabled [ 27.622648] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.630013] general protection fault: 0000 [#1] SMP KASAN [ 27.635567] CPU: 0 PID: -1996936928 Comm: €àשˆÿÿutor Not tainted 4.18.0-rc3-next-20180706+ #1 [ 27.644388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.653752] RIP: 0010:scheduler_tick+0x170/0x430 [ 27.658488] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9a 02 00 00 48 ba 00 00 00 00 00 fc ff df 49 8b 47 78 48 8d 78 78 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 5f 02 00 00 48 8b 40 78 31 d2 4c 89 fe 48 89 df [ 27.677596] RSP: 0018:ffff8801dae07a00 EFLAGS: 00010006 [ 27.682947] RAX: 0000000000000000 RBX: ffff8801dae2c980 RCX: 000000000000000f [ 27.690201] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000078 [ 27.697454] RBP: ffff8801dae07ae0 R08: ffff88021fff8018 R09: ffff88021fff801b [ 27.704708] R10: ffffed0043fff001 R11: 0000000000000000 R12: 0000000000000000 [ 27.711965] R13: ffff8801dae07a38 R14: ffff8801dae07ab8 R15: ffff8801a9d7e080 [ 27.719229] FS: 00007ff7f2704700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 27.727448] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.733317] CR2: 0000000000000130 CR3: 0000000008e6a000 CR4: 00000000001406f0 [ 27.740584] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.747862] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.755117] Call Trace: [ 27.757684] [ 27.759835] ? task_sched_runtime+0x3e0/0x3e0 [ 27.764325] ? irq_work_tick+0x15d/0x1e0 [ 27.768374] ? irq_work_needs_cpu+0x2c0/0x2c0 [ 27.772855] ? account_system_time+0x93/0xb0 [ 27.777252] ? account_process_tick+0x76/0x240 [ 27.781821] ? do_raw_spin_unlock+0xa7/0x2f0 [ 27.786218] update_process_times+0x51/0x70 [ 27.790538] tick_sched_handle+0x9f/0x180 [ 27.794672] tick_sched_timer+0x45/0x130 [ 27.798721] __hrtimer_run_queues+0x3eb/0x10c0 [ 27.803292] ? __asan_report_load4_noabort+0x14/0x20 [ 27.808398] ? tick_sched_do_timer+0x1a0/0x1a0 [ 27.812970] ? hrtimer_start_range_ns+0xd20/0xd20 [ 27.817802] ? pvclock_read_flags+0x160/0x160 [ 27.822281] ? __local_bh_enable+0xef/0x130 [ 27.826605] ? kvm_clock_read+0x25/0x30 [ 27.830564] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 27.835585] ? ktime_get_update_offsets_now+0x3db/0x5d0 [ 27.840952] ? do_timer+0x50/0x50 [ 27.844394] ? kasan_check_read+0x11/0x20 [ 27.848536] ? rcu_nmi_exit+0xe0/0x2d0 [ 27.852411] ? do_raw_spin_lock+0xc1/0x200 [ 27.856631] hrtimer_interrupt+0x2f3/0x750 [ 27.860866] smp_apic_timer_interrupt+0x165/0x730 [ 27.865696] ? smp_call_function_single_interrupt+0x660/0x660 [ 27.871572] ? _raw_spin_unlock+0x22/0x30 [ 27.875711] ? handle_edge_irq+0x330/0x870 [ 27.879944] ? task_prio+0x50/0x50 [ 27.883478] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.888315] apic_timer_interrupt+0xf/0x20 [ 27.892540] [ 27.894759] Modules linked in: [ 27.897938] Dumping ftrace buffer: [ 27.901453] (ftrace buffer empty) [ 27.905154] ---[ end trace 40913575008fbda0 ]--- [ 27.909900] RIP: 0010:scheduler_tick+0x170/0x430 [ 27.914629] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9a 02 00 00 48 ba 00 00 00 00 00 fc ff df 49 8b 47 78 48 8d 78 78 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 5f 02 00 00 48 8b 40 78 31 d2 4c 89 fe 48 89 df [ 27.933736] RSP: 0018:ffff8801dae07a00 EFLAGS: 00010006 [ 27.939101] RAX: 0000000000000000 RBX: ffff8801dae2c980 RCX: 000000000000000f [ 27.946374] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000078 [ 27.953634] RBP: ffff8801dae07ae0 R08: ffff88021fff8018 R09: ffff88021fff801b [ 27.960892] R10: ffffed0043fff001 R11: 0000000000000000 R12: 0000000000000000 [ 27.968148] R13: ffff8801dae07a38 R14: ffff8801dae07ab8 R15: ffff8801a9d7e080 [ 27.975419] FS: 00007ff7f2704700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 27.983654] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.989524] CR2: 0000000000000130 CR3: 0000000008e6a000 CR4: 00000000001406f0 [ 27.996779] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.004057] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.011319] Kernel panic - not syncing: Fatal exception in interrupt [ 28.018352] Dumping ftrace buffer: [ 28.021888] (ftrace buffer empty) [ 28.025582] Kernel Offset: disabled [ 28.029190] Rebooting in 86400 seconds..