================================================================== BUG: KCSAN: data-race in perf_event_exit_event / perf_event_exit_event read to 0xffff8881496ff30c of 4 bytes by task 5562 on cpu 0: perf_event_wakeup kernel/events/core.c:6408 [inline] perf_event_exit_event+0x6cf/0x780 kernel/events/core.c:12716 perf_event_exit_task_context kernel/events/core.c:12773 [inline] perf_event_exit_task+0x479/0x600 kernel/events/core.c:12806 do_exit+0x594/0x1720 kernel/exit.c:804 do_group_exit+0xa5/0x160 kernel/exit.c:925 get_signal+0xf54/0x1020 kernel/signal.c:2857 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166 exit_to_user_mode_prepare+0x69/0x90 kernel/entry/common.c:201 irqentry_exit_to_user_mode+0x5/0x10 kernel/entry/common.c:307 irqentry_exit+0xe/0x40 kernel/entry/common.c:408 asm_exc_page_fault+0x22/0x30 write to 0xffff8881496ff30c of 4 bytes by task 5536 on cpu 1: perf_event_wakeup kernel/events/core.c:6410 [inline] perf_event_exit_event+0x623/0x780 kernel/events/core.c:12707 perf_event_exit_task_context kernel/events/core.c:12773 [inline] perf_event_exit_task+0x479/0x600 kernel/events/core.c:12806 do_exit+0x594/0x1720 kernel/exit.c:804 do_group_exit+0xa5/0x160 kernel/exit.c:925 get_signal+0xf54/0x1020 kernel/signal.c:2857 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00000001 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 5536 Comm: syz-executor.5 Not tainted 5.19.0-rc8-syzkaller-00146-ge65c6a46df94-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 ==================================================================