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BUG: KCSAN: data-race in handle_irq_event / synchronize_irq

write to 0xffff88812bce5600 of 4 bytes by interrupt on cpu 1:
 irqd_clear kernel/irq/internals.h:225 [inline]
 handle_irq_event+0x10e/0x140 kernel/irq/handle.c:216
 handle_edge_irq+0x18e/0x5f0 kernel/irq/chip.c:819
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 handle_irq arch/x86/kernel/irq.c:230 [inline]
 __common_interrupt arch/x86/kernel/irq.c:249 [inline]
 common_interrupt+0xf6/0x1e0 arch/x86/kernel/irq.c:239
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:572
 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
 arch_safe_halt arch/x86/include/asm/paravirt.h:150 [inline]
 acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
 acpi_idle_do_entry drivers/acpi/processor_idle.c:524 [inline]
 acpi_idle_enter+0x30d/0x680 drivers/acpi/processor_idle.c:650
 cpuidle_enter_state+0x27c/0x7c0 drivers/cpuidle/cpuidle.c:243
 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:355
 call_cpuidle kernel/sched/idle.c:132 [inline]
 cpuidle_idle_call kernel/sched/idle.c:213 [inline]
 do_idle+0x1e7/0x2c0 kernel/sched/idle.c:273
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:369
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243

read to 0xffff88812bce5600 of 4 bytes by task 14967 on cpu 0:
 irqd_irq_inprogress include/linux/irq.h:344 [inline]
 __synchronize_hardirq kernel/irq/manage.c:51 [inline]
 synchronize_irq+0xa6/0x2e0 kernel/irq/manage.c:132
 serial8250_do_shutdown+0xb8/0x400 drivers/tty/serial/8250/8250_port.c:2447
 serial8250_shutdown+0x37/0x40 drivers/tty/serial/8250/8250_port.c:2493
 uart_port_shutdown drivers/tty/serial/serial_core.c:1706 [inline]
 uart_tty_port_shutdown+0xb9/0x1b0 drivers/tty/serial/serial_core.c:1578
 tty_port_shutdown drivers/tty/tty_port.c:330 [inline]
 tty_port_close+0x166/0x210 drivers/tty/tty_port.c:636
 uart_close+0x4c/0xf0 drivers/tty/serial/serial_core.c:1559
 tty_release+0x255/0xa00 drivers/tty/tty_io.c:1679
 __fput+0x246/0x4d0 fs/file_table.c:281
 ____fput+0x11/0x20 fs/file_table.c:314
 task_work_run+0x8e/0x110 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:163 [inline]
 exit_to_user_mode_prepare+0x1b2/0x210 kernel/entry/common.c:190
 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:265
 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 14967 Comm: syz-executor.2 Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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