[ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.316372][ T8497] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor535/8497 [ 65.325899][ T8497] caller is lockdep_hardirqs_on_prepare+0x5e/0x410 [ 65.333138][ T8497] CPU: 1 PID: 8497 Comm: syz-executor535 Not tainted 5.9.0-syzkaller #0 [ 65.341478][ T8497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.351539][ T8497] Call Trace: [ 65.354829][ T8497] dump_stack+0x107/0x163 [ 65.359166][ T8497] check_preemption_disabled+0x123/0x130 [ 65.364795][ T8497] lockdep_hardirqs_on_prepare+0x5e/0x410 [ 65.370510][ T8497] trace_hardirqs_on+0x5b/0x1c0 [ 65.375353][ T8497] __bad_area_nosemaphore+0xc6/0x400 [ 65.380654][ T8497] do_user_addr_fault+0x7d7/0xb40 [ 65.385686][ T8497] exc_page_fault+0x9e/0x180 [ 65.390279][ T8497] ? asm_exc_page_fault+0x8/0x30 [ 65.395202][ T8497] asm_exc_page_fault+0x1e/0x30 [ 65.400037][ T8497] RIP: 0033:0x4241f0 [ 65.403918][ T8497] 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 [ 65.423514][ T8497] RSP: 002b:00007ffc44b08bf8 EFLAGS: 00010246 [ 65.429570][ T8497] RAX: 0000000000000000 RBX: 00007ffc44b08c20 RCX: 0000000000000000 [ 65.437527][ T8497] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000 [ 65.445500][ T8497] RBP: 0000000000000003 R08: 00000000ffffffff R09: 0000000000000000 [ 65.453473][ T8497] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401d70 [ 65.461444][ T8497] R13: 0000000000401e00 R14: 0000000000000000 R15: 0000000000000000 [ 65.469604][ T8497] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor535/8497 [ 65.479088][ T8497] caller is lockdep_hardirqs_on+0x38/0x110 [ 65.484884][ T8497] CPU: 1 PID: 8497 Comm: syz-executor535 Not tainted 5.9.0-syzkaller #0 [ 65.493190][ T8497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.503231][ T8497] Call Trace: [ 65.506533][ T8497] dump_stack+0x107/0x163 [ 65.510866][ T8497] check_preemption_disabled+0x123/0x130 [ 65.516488][ T8497] ? __bad_area_nosemaphore+0xc6/0x400 [ 65.521931][ T8497] lockdep_hardirqs_on+0x38/0x110 [ 65.526947][ T8497] __bad_area_nosemaphore+0xc6/0x400 [ 65.532273][ T8497] do_user_addr_fault+0x7d7/0xb40 [ 65.537341][ T8497] exc_page_fault+0x9e/0x180 [ 65.541931][ T8497] ? asm_exc_page_fault+0x8/0x30 [ 65.546886][ T8497] asm_exc_page_fault+0x1e/0x30 [ 65.551722][ T8497] RIP: 0033:0x4241f0 [ 65.555609][ T8497] 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 [ 65.575201][ T8497] RSP: 002b:00007ffc44b08bf8 EFLAGS: 00010246 [ 65.581256][ T8497] RAX: 0000000000000000 RBX: 00007ffc44b08c20 RCX: 0000000000000000 [ 65.589217][ T8497] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000 [ 65.597180][ T8497] RBP: 0000000000000003 R08: 00000000ffffffff R09: 0000000000000000 [ 65.605139][ T8497] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401d70 [ 65.613100][ T8497] R13: 0000000000401e00 R14: 000