================================================================== BUG: KCSAN: data-race in __perf_event_overflow / fasync_remove_entry write to 0xffff888116950b60 of 8 bytes by task 389 on cpu 1: fasync_remove_entry+0xd2/0x130 fs/fcntl.c:909 fasync_helper+0x96/0xc0 fs/fcntl.c:1008 perf_fasync+0x64/0x90 kernel/events/core.c:6679 __fput+0x5fa/0x660 fs/file_table.c:419 __fput_sync+0x44/0x60 fs/file_table.c:507 __do_sys_close fs/open.c:1555 [inline] __se_sys_close+0x101/0x1b0 fs/open.c:1540 __x64_sys_close+0x1f/0x30 fs/open.c:1540 x64_sys_call+0x25f1/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:4 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888116950b60 of 8 bytes by interrupt on cpu 0: __perf_event_overflow+0x44a/0x570 kernel/events/core.c:9726 perf_swevent_hrtimer+0x240/0x2f0 kernel/events/core.c:11079 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:94 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x3d/0x60 kernel/locking/spinlock.c:194 class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:553 [inline] try_to_wake_up+0x3e5/0x630 kernel/sched/core.c:4262 wake_up_process kernel/sched/core.c:4510 [inline] wake_up_q+0x3f/0x80 kernel/sched/core.c:1029 futex_wake+0x2d2/0x330 kernel/futex/waitwake.c:199 do_futex+0x2ab/0x370 kernel/futex/syscalls.c:107 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x25d/0x3a0 kernel/futex/syscalls.c:160 __x64_sys_futex+0x78/0x90 kernel/futex/syscalls.c:160 x64_sys_call+0x28c1/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:203 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0xffff888117f90ed0 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 390 Comm: syz-executor.0 Not tainted 6.10.0-rc1-syzkaller-00104-gd8ec19857b09 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 ==================================================================