rcu: Add READ_ONCE() to rcu_segcblist ->tails[]

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The rcu_segcblist structure's ->tails[] array entries are read
locklessly, so this commit adds the READ_ONCE() to a load in order to
avoid destructive compiler optimizations.

This data race was reported by KCSAN.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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This commit is contained in:

Paul E. McKenney 2020-01-03 16:14:08 -08:00

parent 0050c7b2d2

commit bfeebe2421

1 changed files with 1 additions and 1 deletions

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kernel/rcu/rcu_segcblist.c

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