[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   65.723611][ T8469] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor094/8469
[   65.733028][ T8469] caller is lockdep_hardirqs_on_prepare+0x5e/0x410
[   65.740211][ T8469] CPU: 0 PID: 8469 Comm: syz-executor094 Not tainted 5.9.0-syzkaller #0
[   65.748574][ T8469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   65.758641][ T8469] Call Trace:
[   65.761919][ T8469]  dump_stack+0x107/0x163
[   65.766236][ T8469]  check_preemption_disabled+0x123/0x130
[   65.771856][ T8469]  lockdep_hardirqs_on_prepare+0x5e/0x410
[   65.777556][ T8469]  trace_hardirqs_on+0x5b/0x1c0
[   65.782390][ T8469]  __bad_area_nosemaphore+0xc6/0x400
[   65.787694][ T8469]  do_user_addr_fault+0x7d7/0xb40
[   65.792733][ T8469]  exc_page_fault+0x9e/0x180
[   65.797329][ T8469]  ? asm_exc_page_fault+0x8/0x30
[   65.802266][ T8469]  asm_exc_page_fault+0x1e/0x30
[   65.807096][ T8469] RIP: 0033:0x424260
[   65.810972][ T8469] Code: 66 0f ef c0 66 0f ef c9 66 0f ef d2 66 0f ef db 48 89 f8 48 89 f9 48 81 e1 ff 0f 00 00 48 81 f9 cf 0f 00 00 77 74 48 83 e0 f0 <66> 0f 74 00 66 0f 74 48 10 66 0f 74 50 20 66 0f 74 58 30 66 0f d7
[   65.830570][ T8469] RSP: 002b:00007ffe281a8ff8 EFLAGS: 00010246
[   65.836618][ T8469] RAX: 0000000000000000 RBX: 00007ffe281a9020 RCX: 0000000000000000
[   65.844583][ T8469] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000
[   65.852548][ T8469] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
[   65.860519][ T8469] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401de0
[   65.868487][ T8469] R13: 0000000000401e70 R14: 0000000000000000 R15: 0000000000000000
[   65.876654][ T8469] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor094/8469
[   65.886070][ T8469] caller is lockdep_hardirqs_on+0x38/0x110
[   65.891860][ T8469] CPU: 0 PID: 8469 Comm: syz-executor094 Not tainted 5.9.0-syzkaller #0
[   65.900162][ T8469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   65.910212][ T8469] Call Trace:
[   65.913486][ T8469]  dump_stack+0x107/0x163
[   65.917814][ T8469]  check_preemption_disabled+0x123/0x130
[   65.923431][ T8469]  ? __bad_area_nosemaphore+0xc6/0x400
[   65.928871][ T8469]  lockdep_hardirqs_on+0x38/0x110
[   65.933878][ T8469]  __bad_area_nosemaphore+0xc6/0x400
[   65.939146][ T8469]  do_user_addr_fault+0x7d7/0xb40
[   65.944172][ T8469]  exc_page_fault+0x9e/0x180
[   65.948754][ T8469]  ? asm_exc_page_fault+0x8/0x30
[   65.953679][ T8469]  asm_exc_page_fault+0x1e/0x30
[   65.958513][ T8469] RIP: 0033:0x424260
[   65.962391][ T8469] Code: 66 0f ef c0 66 0f ef c9 66 0f ef d2 66 0f ef db 48 89 f8 48 89 f9 48 81 e1 ff 0f 00 00 48 81 f9 cf 0f 00 00 77 74 48 83 e0 f0 <66> 0f 74 00 66 0f 74 48 10 66 0f 74 50 20 66 0f 74 58 30 66 0f d7
[   65.981996][ T8469] RSP: 002b:00007ffe281a8ff8 EFLAGS: 00010246
[   65.988053][ T8469] RAX: 0000000000000000 RBX: 00007ffe281a9020 RCX: 0000000000000000
[   65.996077][ T8469] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000
[   66.004052][ T8469] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
[   66.012006][ T8469] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401de0
[   66.019957][ T8469] R13: 0000000000401e70 R14: 000000000