rcu: Record kvfree_call_rcu() call stack for KASAN
authorZqiang <qiang.zhang@windriver.com>
Fri, 20 Nov 2020 14:53:11 +0000 (06:53 -0800)
committerPaul E. McKenney <paulmck@kernel.org>
Mon, 4 Jan 2021 21:42:04 +0000 (13:42 -0800)
commit84109ab58590dc6c4e7eb36329fdc7ec121ed5a5
treed4629bc98f7f3c5a492b2cb567540eeea7ed3ad9
parent5c8fe583cce542aa0b84adc939ce85293de36e5e
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>
kernel/rcu/tree.c