srcu: Fix process_srcu()/srcu_batches_completed() datarace

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The srcu_struct structure's ->srcu_idx field is accessed locklessly,
so reads must use READ_ONCE().  This commit therefore adds the needed
READ_ONCE() invocation where it was missed.

This data race was reported by KCSAN.  Not appropriate for backporting
due to failure being unlikely.

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

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Paul E. McKenney 2019-12-22 19:39:35 -08:00

parent 8c9e0cb323

commit 39f91504a0

1 changed files with 1 additions and 1 deletions

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kernel/rcu/srcutree.c

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