BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor728/6889 caller is lockdep_hardirqs_on_prepare+0x5e/0x450 kernel/locking/lockdep.c:4060 CPU: 0 PID: 6889 Comm: syz-executor728 Not tainted 5.9.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fb lib/dump_stack.c:118 check_preemption_disabled+0x128/0x130 lib/smp_processor_id.c:48 lockdep_hardirqs_on_prepare+0x5e/0x450 kernel/locking/lockdep.c:4060 trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49 __bad_area_nosemaphore+0xc6/0x4f0 arch/x86/mm/fault.c:797 do_user_addr_fault+0x852/0xbf0 arch/x86/mm/fault.c:1335 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:583 RIP: 0033:0x424260 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 RSP: 002b:00007ffdbe948038 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffdbe948060 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401de0 R13: 0000000000401e70 R14: 0000000000000000 R15: 0000000000000000 BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor728/6889 caller is lockdep_hardirqs_on+0x34/0x110 kernel/locking/lockdep.c:4129 CPU: 0 PID: 6889 Comm: syz-executor728 Not tainted 5.9.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fb lib/dump_stack.c:118 check_preemption_disabled+0x128/0x130 lib/smp_processor_id.c:48 lockdep_hardirqs_on+0x34/0x110 kernel/locking/lockdep.c:4129 __bad_area_nosemaphore+0xc6/0x4f0 arch/x86/mm/fault.c:797 do_user_addr_fault+0x852/0xbf0 arch/x86/mm/fault.c:1335 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:583 RIP: 0033:0x424260 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 RSP: 002b:00007ffdbe948038 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007ffdbe948060 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 000000000000000f RDI: 0000000000000000 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000000f R12: 0000000000401de0 R13: 0000000000401e7