diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2025-01-29 09:49:25 +0100 |
|---|---|---|
| committer | Petr Pavlu <petr.pavlu@suse.com> | 2025-03-10 11:54:46 +0100 |
| commit | 7e74a7c00aefdcd0941d98873fce402d93ef07dc (patch) | |
| tree | ac2cd4c0c06c6d6aa16b0bb5dfebb69b04eee717 | |
| parent | 8c6eb7ca8600a2704b1fb7f1abe1f7c49a0d970a (diff) | |
kprobes: Use RCU in all users of __module_text_address().
__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 <davem@davemloft.net>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Naveen N Rao <naveen@kernel.org>
Cc: linux-trace-kernel@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250129084925.9ppBjGLC@linutronix.de
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
| -rw-r--r-- | kernel/kprobes.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 88aeac84e4c0..ffe0c3d52306 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -1547,7 +1547,7 @@ static int check_kprobe_address_safe(struct kprobe *p, /* Ensure the address is in a text area, and find a module if exists. */ *probed_mod = NULL; if (!core_kernel_text((unsigned long) p->addr)) { - guard(preempt)(); + guard(rcu)(); *probed_mod = __module_text_address((unsigned long) p->addr); if (!(*probed_mod)) return -EINVAL; |