Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.35' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 62.474959][ T6870] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor336/6870 [ 62.484887][ T6870] caller is lockdep_hardirqs_on_prepare+0x5e/0x450 [ 62.492668][ T6870] CPU: 1 PID: 6870 Comm: syz-executor336 Not tainted 5.9.0-syzkaller #0 [ 62.505093][ T6870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.515244][ T6870] Call Trace: [ 62.518549][ T6870] dump_stack+0x198/0x1fb [ 62.522903][ T6870] check_preemption_disabled+0x128/0x130 [ 62.528632][ T6870] lockdep_hardirqs_on_prepare+0x5e/0x450 [ 62.534352][ T6870] trace_hardirqs_on+0x5b/0x1c0 [ 62.539413][ T6870] __bad_area_nosemaphore+0xc6/0x4f0 [ 62.545062][ T6870] bad_area_access_error+0x29c/0x3b0 [ 62.550630][ T6870] do_user_addr_fault+0x69f/0xbf0 [ 62.555657][ T6870] exc_page_fault+0xa8/0x190 [ 62.560240][ T6870] ? asm_exc_page_fault+0x8/0x30 [ 62.565806][ T6870] asm_exc_page_fault+0x1e/0x30 [ 62.570852][ T6870] RIP: 0033:0x4006b9 [ 62.575405][ T6870] Code: 49 b8 32 00 20 00 20 10 00 00 31 c9 ba 00 10 00 00 be 00 b0 ab 20 bf 09 00 00 00 31 c0 48 c7 04 24 00 00 00 00 e8 57 fb 03 00 <48> c7 04 25 f9 af ab 20 00 94 35 77 48 c7 04 25 01 b0 ab 20 00 00 [ 62.596312][ T6870] RSP: 002b:00007ffd1db60590 EFLAGS: 00010217 [ 62.602582][ T6870] RAX: 0000000020abb000 RBX: 00000000004002c8 RCX: 0000000000440229 [ 62.612297][ T6870] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020abb000 [ 62.620720][ T6870] RBP: 00000000006ca018 R08: 00000000ffffffff R09: 0000000000000000 [ 62.629150][ T6870] R10: 0000102000200032 R11: 0000000000000246 R12: 0000000000401a30 [ 62.637329][ T6870] R13: 0000000000401ac0 R14: 0000000000000000 R15: 0000000000000000 [ 62.646276][ T6870] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor336/6870 [ 62.655686][ T6870] caller is lockdep_hardirqs_on+0x34/0x110 [ 62.661581][ T6870] CPU: 1 PID: 6870 Comm: syz-executor336 Not tainted 5.9.0-syzkaller #0 [ 62.669998][ T6870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.680058][ T6870] Call Trace: [ 62.683372][ T6870] dump_stack+0x198/0x1fb [ 62.687841][ T6870] check_preemption_disabled+0x128/0x130 [ 62.693493][ T6870] ? __bad_area_nosemaphore+0xc6/0x4f0 [ 62.698961][ T6870] lockdep_hardirqs_on+0x34/0x110 [ 62.703970][ T6870] __bad_area_nosemaphore+0xc6/0x4f0 [ 62.710184][ T6870] bad_area_access_error+0x29c/0x3b0 [ 62.715464][ T6870] do_user_addr_fault+0x69f/0xbf0 [ 62.720693][ T6870] exc_page_fault+0xa8/0x190 [ 62.725293][ T6870] ? asm_exc_page_fault+0x8/0x30 [ 62.730236][ T6870] asm_exc_page_fault+0x1e/0x30 [ 62.735082][ T6870] RIP: 0033:0x4006b9 [ 62.738981][ T6870] Code: 49 b8 32 00 20 00 20 10 00 00 31 c9 ba 00 10 00 00 be 00 b0 ab 20 bf 09 00 00 00 31 c0 48 c7 04 24 00 00 00 00 e8 57 fb 03 00 <48> c7 04 25 f9 af ab 20 00 94 35 77 48 c7 04 25 01 b0 ab 20 00 00 [ 62.758597][ T6870] RSP: 002b:00007ffd1db60590 EFLAGS: 00010217 [ 62.764672][ T6870] RAX: 0000000020abb000 RBX: 00000000004002c8 RCX: 0000000000440229 [ 62.772651][ T6870] RDX: 0000000000000000