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

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   66.733080][ T6914] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor196/6914
[   66.742558][ T6914] caller is lockdep_hardirqs_on_prepare+0x5e/0x450
[   66.749188][ T6914] CPU: 0 PID: 6914 Comm: syz-executor196 Not tainted 5.9.0-syzkaller #0
[   66.757614][ T6914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   66.767651][ T6914] Call Trace:
[   66.770939][ T6914]  dump_stack+0x198/0x1fb
[   66.775262][ T6914]  check_preemption_disabled+0x128/0x130
[   66.780902][ T6914]  lockdep_hardirqs_on_prepare+0x5e/0x450
[   66.786647][ T6914]  trace_hardirqs_on+0x5b/0x1c0
[   66.791528][ T6914]  __bad_area_nosemaphore+0xc6/0x4f0
[   66.796853][ T6914]  do_user_addr_fault+0x852/0xbf0
[   66.801915][ T6914]  exc_page_fault+0xa8/0x190
[   66.806527][ T6914]  ? asm_exc_page_fault+0x8/0x30
[   66.811489][ T6914]  asm_exc_page_fault+0x1e/0x30
[   66.816446][ T6914] RIP: 0033:0x424260
[   66.820356][ T6914] 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
[   66.840093][ T6914] RSP: 002b:00007ffc0a77da98 EFLAGS: 00010246
[   66.846288][ T6914] RAX: 0000000000000000 RBX: 00007ffc0a77dac0 RCX: 0000000000000000
[   66.854287][ T6914] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000
[   66.862293][ T6914] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
[   66.870298][ T6914] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401de0
[   66.878259][ T6914] R13: 0000000000401e70 R14: 0000000000000000 R15: 0000000000000000
[   66.887132][ T6914] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor196/6914
[   66.896616][ T6914] caller is lockdep_hardirqs_on+0x34/0x110
[   66.902604][ T6914] CPU: 0 PID: 6914 Comm: syz-executor196 Not tainted 5.9.0-syzkaller #0
[   66.910955][ T6914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   66.921001][ T6914] Call Trace:
[   66.924305][ T6914]  dump_stack+0x198/0x1fb
[   66.928637][ T6914]  check_preemption_disabled+0x128/0x130
[   66.934255][ T6914]  ? __bad_area_nosemaphore+0xc6/0x4f0
[   66.939749][ T6914]  lockdep_hardirqs_on+0x34/0x110
[   66.944829][ T6914]  __bad_area_nosemaphore+0xc6/0x4f0
[   66.950248][ T6914]  do_user_addr_fault+0x852/0xbf0
[   66.955346][ T6914]  exc_page_fault+0xa8/0x190
[   66.959922][ T6914]  ? asm_exc_page_fault+0x8/0x30
[   66.965094][ T6914]  asm_exc_page_fault+0x1e/0x30
[   66.970080][ T6914] RIP: 0033:0x424260
[   66.974026][ T6914] 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
[   66.993622][ T6914] RSP: 002b:00007ffc0a77da98 EFLAGS: 00010246
[   66.999678][ T6914] RAX: 0000000000000000 RBX: 00007ffc0a77dac0 RCX: 0000000000000000
[   67.007637][ T6914] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000
[   67.015644][ T6914] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
[   67.023602][ T6914] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401de0
[   67.031662][ T6914] R13: 00000