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| author | Zqiang <qiang.zhang@windriver.com> | 2020-11-20 15:53:11 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-01-04 22:42:04 +0100 |
| commit | 84109ab58590dc6c4e7eb36329fdc7ec121ed5a5 (patch) | |
| tree | d4629bc98f7f3c5a492b2cb567540eeea7ed3ad9 /kernel/rcu | |
| parent | Linux 5.11-rc1 (diff) | |
| download | linux-84109ab58590dc6c4e7eb36329fdc7ec121ed5a5.tar.xz linux-84109ab58590dc6c4e7eb36329fdc7ec121ed5a5.zip | |
rcu: Record kvfree_call_rcu() call stack for KASAN
This commit adds a call to kasan_record_aux_stack() in kvfree_call_rcu()
in order to record the call stack of the code that caused the object
to be freed. Please note that this function does not update the
allocated/freed state, which is important because RCU readers might
still be referencing this object.
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 40e5e3dd253e..2db736cbe342 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3498,6 +3498,7 @@ void kvfree_call_rcu(struct rcu_head *head, rcu_callback_t func) goto unlock_return; } + kasan_record_aux_stack(ptr); success = kvfree_call_rcu_add_ptr_to_bulk(krcp, ptr); if (!success) { run_page_cache_worker(krcp); |