linux-kernel - [PATCH v2 2/3] kernel/uprobes: Ratelimit messages

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Message-Id: <2cb9aa460162603d5e61a81469eba8e6591c6b20.1505333828.git.naveen.n.rao@linux.vnet.ibm.com>
Date:   Thu, 14 Sep 2017 01:58:01 +0530
From:   "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Oleg Nesterov <oleg@...hat.com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        Anton Blanchard <anton@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/3] kernel/uprobes: Ratelimit messages

Ratelimit warnings from uprobes so as not to flood the kernel log.

Suggested-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Naveen N. Rao <naveen.n.rao@...ux.vnet.ibm.com>
---
 kernel/events/uprobes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 4af1acff9cc3..e14eb0a6e4f3 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -114,8 +114,8 @@ struct xol_area {
 
 static void uprobe_warn(struct task_struct *t, const char *msg)
 {
-	pr_warn("uprobe: %s:%d failed to %s\n",
-			current->comm, current->pid, msg);
+	pr_warn_ratelimited("uprobe: %s:%d failed to %s\n",
+				current->comm, current->pid, msg);
 }
 
 /*
-- 
2.14.1