[ 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 '10.128.10.22' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 68.228684][ T8483] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor212/8483 [ 68.238245][ T8483] caller is lockdep_hardirqs_on_prepare+0x5e/0x410 [ 68.245558][ T8483] CPU: 1 PID: 8483 Comm: syz-executor212 Not tainted 5.10.0-rc1-syzkaller #0 [ 68.254319][ T8483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.264426][ T8483] Call Trace: [ 68.267714][ T8483] dump_stack+0x107/0x163 [ 68.272037][ T8483] check_preemption_disabled+0x123/0x130 [ 68.277784][ T8483] lockdep_hardirqs_on_prepare+0x5e/0x410 [ 68.283535][ T8483] trace_hardirqs_on+0x5b/0x1c0 [ 68.288411][ T8483] __bad_area_nosemaphore+0xc6/0x400 [ 68.293693][ T8483] do_user_addr_fault+0x7d7/0xb40 [ 68.298738][ T8483] exc_page_fault+0x9e/0x180 [ 68.303318][ T8483] ? asm_exc_page_fault+0x8/0x30 [ 68.308236][ T8483] asm_exc_page_fault+0x1e/0x30 [ 68.313068][ T8483] RIP: 0033:0x424260 [ 68.316945][ T8483] 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 [ 68.336533][ T8483] RSP: 002b:00007fff720131d8 EFLAGS: 00010246 [ 68.342585][ T8483] RAX: 0000000000000000 RBX: 00007fff72013200 RCX: 0000000000000000 [ 68.350535][ T8483] RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000 [ 68.358482][ T8483] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 68.366446][ T8483] R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401de0 [ 68.374399][ T8483] R13: 0000000000401e70 R14: 0000000000000000 R15: 0000000000000000 [ 68.382540][ T8483] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor212/8483 [ 68.391945][ T8483] caller is lockdep_hardirqs_on+0x38/0x110 [ 68.397747][ T8483] CPU: 1 PID: 8483 Comm: syz-executor212 Not tainted 5.10.0-rc1-syzkaller #0 [ 68.406476][ T8483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.416509][ T8483] Call Trace: [ 68.419786][ T8483] dump_stack+0x107/0x163 [ 68.424126][ T8483] check_preemption_disabled+0x123/0x130 [ 68.429747][ T8483] ? __bad_area_nosemaphore+0xc6/0x400 [ 68.435185][ T8483] lockdep_hardirqs_on+0x38/0x110 [ 68.440187][ T8483] __bad_area_nosemaphore+0xc6/0x400 [ 68.445459][ T8483] do_user_addr_fault+0x7d7/0xb40 [ 68.450466][ T8483] exc_page_fault+0x9e/0x180 [ 68.455035][ T8483] ? asm_exc_page_fault+0x8/0x30 [ 68.459948][ T8483] asm_exc_page_fault+0x1e/0x30 [ 68.464775][ T8483] RIP: 0033:0x424260 [ 68.468647][ T8483] 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