__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" <[email protected]> Cc: Anil S Keshavamurthy <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Naveen N Rao <[email protected]> Cc: [email protected] Signed-off-by: Sebastian Andrzej Siewior <[email protected]> --- 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
