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BUG: KCSAN: data-race in yama_ptracer_del / yama_ptracer_del

write to 0xffff888095b4f610 of 1 bytes by interrupt on cpu 0:
 yama_ptracer_del+0x119/0x1a0 security/yama/yama_lsm.c:191
 yama_task_free+0x22/0x30 security/yama/yama_lsm.c:207
 security_task_free+0x43/0xa0 security/security.c:1550
 __put_task_struct+0xcd/0x360 kernel/fork.c:751
 put_task_struct include/linux/sched/task.h:122 [inline]
 delayed_put_task_struct+0x1a5/0x1d0 kernel/exit.c:182
 rcu_do_batch kernel/rcu/tree.c:2207 [inline]
 rcu_core+0x533/0x9f0 kernel/rcu/tree.c:2434
 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2443
 __do_softirq+0x115/0x33f kernel/softirq.c:292
 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603
 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165
 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

read to 0xffff888095b4f610 of 1 bytes by interrupt on cpu 1:
 yama_ptracer_del+0xd6/0x1a0 security/yama/yama_lsm.c:187
 yama_task_free+0x22/0x30 security/yama/yama_lsm.c:207
 security_task_free+0x43/0xa0 security/security.c:1550
 __put_task_struct+0xcd/0x360 kernel/fork.c:751
 put_task_struct include/linux/sched/task.h:122 [inline]
 delayed_put_task_struct+0x1a5/0x1d0 kernel/exit.c:182
 rcu_do_batch kernel/rcu/tree.c:2207 [inline]
 rcu_core+0x533/0x9f0 kernel/rcu/tree.c:2434
 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2443
 __do_softirq+0x115/0x33f kernel/softirq.c:292
 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603
 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165
 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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