================================================================== BUG: KCSAN: data-race in yama_ptracer_del / yama_ptracer_del write to 0xffff8880934e67d0 of 1 bytes by interrupt on cpu 0: yama_ptracer_del+0x117/0x1a0 security/yama/yama_lsm.c:191 yama_task_free+0x1e/0x30 security/yama/yama_lsm.c:207 security_task_free+0x3f/0xa0 security/security.c:1569 __put_task_struct+0xc3/0x350 kernel/fork.c:748 put_task_struct include/linux/sched/task.h:126 [inline] delayed_put_task_struct+0x19b/0x1c0 kernel/exit.c:173 rcu_do_batch kernel/rcu/tree.c:2206 [inline] rcu_core+0x533/0x9f0 kernel/rcu/tree.c:2433 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2442 __do_softirq+0x118/0x34a kernel/softirq.c:292 run_ksoftirqd+0x41/0x60 kernel/softirq.c:604 smpboot_thread_fn+0x374/0x4a0 kernel/smpboot.c:165 kthread+0x203/0x230 kernel/kthread.c:268 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff8880934e67d0 of 1 bytes by interrupt on cpu 1: yama_ptracer_del+0xd4/0x1a0 security/yama/yama_lsm.c:187 yama_task_free+0x1e/0x30 security/yama/yama_lsm.c:207 security_task_free+0x3f/0xa0 security/security.c:1569 __put_task_struct+0xc3/0x350 kernel/fork.c:748 put_task_struct include/linux/sched/task.h:126 [inline] delayed_put_task_struct+0x19b/0x1c0 kernel/exit.c:173 rcu_do_batch kernel/rcu/tree.c:2206 [inline] rcu_core+0x533/0x9f0 kernel/rcu/tree.c:2433 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2442 __do_softirq+0x118/0x34a kernel/softirq.c:292 run_ksoftirqd+0x41/0x60 kernel/softirq.c:604 smpboot_thread_fn+0x374/0x4a0 kernel/smpboot.c:165 kthread+0x203/0x230 kernel/kthread.c:268 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 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================