__module_text_address() can be invoked within a RCU section, there is no
requirement to have preemption disabled.
Replace the preempt_disable() section around __module_text_address()
with RCU.
Cc: "David S. Miller" <da...@davemloft.net>
Cc: Anil S Keshavamurthy <anil.s.keshavamur...@intel.com>
Cc: Masami Hiramatsu <mhira...@kernel.org>
Cc: Naveen N Rao <nav...@kernel.org>
Cc: linux-trace-kernel@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
kernel/kprobes.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index b027a4030976a..22e47a27df4aa 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1566,7 +1566,7 @@ static int check_kprobe_address_safe(struct kprobe *p,
if (ret)
return ret;
jump_label_lock();
- preempt_disable();
+ rcu_read_lock();
/* Ensure the address is in a text area, and find a module if exists. */
*probed_mod = NULL;
@@ -1612,7 +1612,7 @@ static int check_kprobe_address_safe(struct kprobe *p,
}
out:
- preempt_enable();
+ rcu_read_unlock();
jump_label_unlock();
return ret;
--
2.45.2
