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BUG: KCSAN: data-race in __perf_event_overflow / fasync_remove_entry

read to 0xffff88809d023f00 of 8 bytes by interrupt on cpu 0:
 __perf_event_overflow+0x11d/0x200 kernel/events/core.c:8429
 perf_swevent_hrtimer+0x261/0x280 kernel/events/core.c:9813
 __run_hrtimer kernel/time/hrtimer.c:1517 [inline]
 __hrtimer_run_queues+0x274/0x5f0 kernel/time/hrtimer.c:1579
 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1641
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0xdc/0x280 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 __should_failslab+0x71/0x130 mm/failslab.c:26
 should_failslab+0x9/0x14 mm/slab_common.c:1810
 slab_pre_alloc_hook mm/slab.h:567 [inline]
 slab_alloc_node mm/slab.c:3227 [inline]
 kmem_cache_alloc_node+0x39/0x660 mm/slab.c:3575
 __alloc_skb+0x8e/0x360 net/core/skbuff.c:197
 alloc_skb include/linux/skbuff.h:1049 [inline]
 sctp_packet_transmit+0x154/0x1800 net/sctp/output.c:572
 sctp_outq_flush_transports net/sctp/outqueue.c:1146 [inline]
 sctp_outq_flush+0x1e9/0x14c0 net/sctp/outqueue.c:1194
 sctp_outq_uncork+0x64/0x80 net/sctp/outqueue.c:757
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1786 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1189 [inline]
 sctp_do_sm+0x37f/0x2f10 net/sctp/sm_sideeffect.c:1160
 sctp_assoc_bh_rcv+0x2d7/0x460 net/sctp/associola.c:1045
 sctp_inq_push+0x107/0x1a0 net/sctp/inqueue.c:80
 sctp_backlog_rcv+0x112/0x7d0 net/sctp/input.c:344
 sk_backlog_rcv include/net/sock.h:949 [inline]
 __release_sock+0x135/0x1e0 net/core/sock.c:2437
 release_sock+0x61/0x160 net/core/sock.c:2953
 sctp_setsockopt net/sctp/socket.c:4860 [inline]
 sctp_setsockopt+0x11b/0x5230 net/sctp/socket.c:4657
 sock_common_setsockopt+0x67/0x90 net/core/sock.c:3149
 __sys_setsockopt+0x1ce/0x370 net/socket.c:2117
 __do_sys_setsockopt net/socket.c:2133 [inline]
 __se_sys_setsockopt net/socket.c:2130 [inline]
 __x64_sys_setsockopt+0x70/0x90 net/socket.c:2130
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff88809d023f00 of 8 bytes by task 15198 on cpu 1:
 fasync_remove_entry+0xba/0x120 fs/fcntl.c:882
 fasync_helper+0xcf/0xdc fs/fcntl.c:981
 perf_fasync+0x6c/0xa0 kernel/events/core.c:6002
 __fput+0x46a/0x520 fs/file_table.c:277
 ____fput+0x1f/0x30 fs/file_table.c:313
 task_work_run+0xf6/0x130 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x2b4/0x2c0 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
 do_syscall_64+0x384/0x3a0 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 15198 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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