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BUG: KCSAN: data-race in __perf_event_read_value / event_sched_out

write to 0xffff888136d8e880 of 8 bytes by task 20977 on cpu 1:
 perf_event_update_time kernel/events/core.c:647 [inline]
 perf_event_set_state kernel/events/core.c:666 [inline]
 event_sched_out+0x2e9/0x7f0 kernel/events/core.c:2293
 group_sched_out+0xbf/0x1a0 kernel/events/core.c:2319
 ctx_sched_out+0x36f/0x410 kernel/events/core.c:3289
 task_ctx_sched_out kernel/events/core.c:2687 [inline]
 perf_event_context_sched_out kernel/events/core.c:3494 [inline]
 __perf_event_task_sched_out+0x64c/0xec0 kernel/events/core.c:3597
 perf_event_task_sched_out include/linux/perf_event.h:1229 [inline]
 prepare_task_switch+0x134/0x140 kernel/sched/core.c:4744
 context_switch kernel/sched/core.c:4892 [inline]
 __schedule+0x382/0x680 kernel/sched/core.c:6287
 preempt_schedule_common kernel/sched/core.c:6459 [inline]
 __cond_resched+0x2a/0x40 kernel/sched/core.c:8151
 might_alloc include/linux/sched/mm.h:201 [inline]
 slab_pre_alloc_hook mm/slab.h:492 [inline]
 slab_alloc mm/slab.c:3306 [inline]
 __do_kmalloc mm/slab.c:3700 [inline]
 __kmalloc+0x65/0x350 mm/slab.c:3711
 kmalloc include/linux/slab.h:596 [inline]
 io_alloc_async_data fs/io_uring.c:3315 [inline]
 io_setup_async_rw+0xe6/0x300 fs/io_uring.c:3328
 io_issue_sqe+0x33a6/0x67b0
 __io_queue_sqe+0x34/0x460 fs/io_uring.c:6965
 io_queue_sqe fs/io_uring.c:7016 [inline]
 io_submit_sqe+0x88b/0x3eb0 fs/io_uring.c:7192
 io_submit_sqes+0x505/0xde0 fs/io_uring.c:7298
 __do_sys_io_uring_enter fs/io_uring.c:9998 [inline]
 __se_sys_io_uring_enter+0x20d/0xb30 fs/io_uring.c:9940
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:9940
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888136d8e880 of 8 bytes by task 20978 on cpu 0:
 __perf_event_read_value+0x84/0x1f0 kernel/events/core.c:5194
 perf_read_one kernel/events/core.c:5323 [inline]
 __perf_read kernel/events/core.c:5374 [inline]
 perf_read+0x2b8/0x5c0 kernel/events/core.c:5391
 loop_rw_iter+0x227/0x330
 io_iter_do_read fs/io_uring.c:3442 [inline]
 io_read fs/io_uring.c:3500 [inline]
 io_issue_sqe+0x1a2b/0x67b0 fs/io_uring.c:6659
 io_wq_submit_work+0xf5/0x2c0 fs/io_uring.c:6808
 io_worker_handle_work+0x788/0xa20 fs/io-wq.c:515
 io_wqe_worker+0x209/0x620 fs/io-wq.c:566
 ret_from_fork+0x1f/0x30

value changed: 0x0000000001468b93 -> 0x000000000146b85f

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 20978 Comm: iou-wrk-20977 Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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