Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.125' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   60.891481][ T6889] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor259/6889
[   60.900908][ T6889] caller is lockdep_hardirqs_on_prepare+0x5e/0x450
[   60.908005][ T6889] CPU: 0 PID: 6889 Comm: syz-executor259 Not tainted 5.9.0-syzkaller #0
[   60.916445][ T6889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.926578][ T6889] Call Trace:
[   60.929866][ T6889]  dump_stack+0x198/0x1fb
[   60.934180][ T6889]  check_preemption_disabled+0x128/0x130
[   60.939794][ T6889]  lockdep_hardirqs_on_prepare+0x5e/0x450
[   60.945506][ T6889]  trace_hardirqs_on+0x5b/0x1c0
[   60.950362][ T6889]  __bad_area_nosemaphore+0xc6/0x4f0
[   60.955631][ T6889]  do_user_addr_fault+0x852/0xbf0
[   60.960650][ T6889]  exc_page_fault+0xa8/0x190
[   60.965233][ T6889]  ? asm_exc_page_fault+0x8/0x30
[   60.970161][ T6889]  asm_exc_page_fault+0x1e/0x30
[   60.974986][ T6889] RIP: 0033:0x424360
[   60.978875][ T6889] 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
[   60.998457][ T6889] RSP: 002b:00007ffff27e5418 EFLAGS: 00010246
[   61.004504][ T6889] RAX: 0000000000000000 RBX: 00007ffff27e5440 RCX: 0000000000000000
[   61.012480][ T6889] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000
[   61.020444][ T6889] RBP: 0000000000000004 R08: 0000000000000000 R09: 00000000004002c8
[   61.028451][ T6889] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401ee0
[   61.036411][ T6889] R13: 0000000000401f70 R14: 0000000000000000 R15: 0000000000000000
[   61.044523][ T6889] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor259/6889
[   61.053917][ T6889] caller is lockdep_hardirqs_on+0x34/0x110
[   61.059796][ T6889] CPU: 0 PID: 6889 Comm: syz-executor259 Not tainted 5.9.0-syzkaller #0
[   61.068122][ T6889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   61.078320][ T6889] Call Trace:
[   61.081610][ T6889]  dump_stack+0x198/0x1fb
[   61.085928][ T6889]  check_preemption_disabled+0x128/0x130
[   61.091551][ T6889]  ? __bad_area_nosemaphore+0xc6/0x4f0
[   61.097007][ T6889]  lockdep_hardirqs_on+0x34/0x110
[   61.102013][ T6889]  __bad_area_nosemaphore+0xc6/0x4f0
[   61.107292][ T6889]  do_user_addr_fault+0x852/0xbf0
[   61.112300][ T6889]  exc_page_fault+0xa8/0x190
[   61.116972][ T6889]  ? asm_exc_page_fault+0x8/0x30
[   61.121887][ T6889]  asm_exc_page_fault+0x1e/0x30
[   61.126719][ T6889] RIP: 0033:0x424360
[   61.130596][ T6889] 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
[   61.150194][ T6889] RSP: 002b:00007ffff27e5418 EFLAGS: 00010246
[   61.156240][ T6889] RAX: 0000000000000000 RBX: 00007ffff27e5440 RCX: 0000000000000000
[   61.164209][ T6889] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000
[   61.172159][ T6889] RBP: 0000000000000004 R08: 0000000000000000 R09: 00000000004002c8
[   61.180109][ T6889] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401ee0
[   61.188060][ T6889] R13: 0000000000401f70 R14: 000000