================================================================== BUG: KCSAN: data-race in handle_irq_event / synchronize_irq write to 0xffff8881000ea600 of 4 bytes by interrupt on cpu 0: irqd_clear kernel/irq/internals.h:225 [inline] handle_irq_event+0x12a/0x160 kernel/irq/handle.c:216 handle_edge_irq+0x17e/0x600 kernel/irq/chip.c:819 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] handle_irq arch/x86/kernel/irq.c:231 [inline] __common_interrupt+0x38/0xb0 arch/x86/kernel/irq.c:250 common_interrupt+0x73/0x90 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:623 __sanitizer_cov_trace_const_cmp8+0x4/0x90 kernel/kcov.c:292 pte_none arch/x86/include/asm/pgtable.h:756 [inline] zap_pte_range+0x19a/0xe20 mm/memory.c:1234 zap_pmd_range mm/memory.c:1374 [inline] zap_pud_range mm/memory.c:1403 [inline] zap_p4d_range mm/memory.c:1424 [inline] unmap_page_range+0x2dc/0x3d0 mm/memory.c:1445 unmap_single_vma+0x157/0x210 mm/memory.c:1490 unmap_vmas+0xc0/0x170 mm/memory.c:1522 exit_mmap+0x1be/0x400 mm/mmap.c:3224 __mmput+0x27/0x1c0 kernel/fork.c:1096 mmput+0x3d/0x50 kernel/fork.c:1117 exit_mm+0x360/0x450 kernel/exit.c:502 do_exit+0x3ff/0x1560 kernel/exit.c:813 do_group_exit+0xce/0x1a0 kernel/exit.c:923 get_signal+0xfc3/0x1610 kernel/signal.c:2818 arch_do_signal_or_restart+0x2a/0x220 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x109/0x190 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:301 do_syscall_64+0x56/0x90 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881000ea600 of 4 bytes by task 15240 on cpu 1: irqd_irq_inprogress include/linux/irq.h:354 [inline] __synchronize_hardirq kernel/irq/manage.c:51 [inline] synchronize_irq+0xa6/0x2e0 kernel/irq/manage.c:132 serial8250_do_shutdown+0xc5/0x540 drivers/tty/serial/8250/8250_port.c:2441 serial8250_shutdown+0x37/0x40 drivers/tty/serial/8250/8250_port.c:2487 uart_port_shutdown drivers/tty/serial/serial_core.c:1707 [inline] uart_tty_port_shutdown+0xd6/0x1d0 drivers/tty/serial/serial_core.c:1579 tty_port_shutdown drivers/tty/tty_port.c:331 [inline] tty_port_close+0x166/0x210 drivers/tty/tty_port.c:637 uart_close+0x4c/0x110 drivers/tty/serial/serial_core.c:1560 tty_release+0x255/0xa10 drivers/tty/tty_io.c:1778 __fput+0x25b/0x4e0 fs/file_table.c:280 ____fput+0x11/0x20 fs/file_table.c:313 task_work_run+0xae/0x130 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x474/0x1560 kernel/exit.c:826 do_group_exit+0xce/0x1a0 kernel/exit.c:923 get_signal+0xfc3/0x1610 kernel/signal.c:2818 arch_do_signal_or_restart+0x2a/0x220 arch/x86/kernel/signal.c:789 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x109/0x190 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:301 do_syscall_64+0x56/0x90 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 15240 Comm: syz-executor.2 Tainted: G W 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================