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Message-ID: <47B487F4.7000003@ct.jp.nec.com>
Date: Thu, 14 Feb 2008 10:27:00 -0800
From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
To: linux-kernel@...r.kernel.org
Cc: Arjan van de Ven <arjan@...ux.intel.com>,
Ingo Molnar <mingo@...e.hu>
Subject: [PATCH] latencytop: fix memory leak on latency proc file
From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
At lstats_open(), calling get_proc_task() gets task struct, but it never put.
put_task_struct() should be called when releasing.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
---
fs/proc/base.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 1710b03..dc651a9 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -360,6 +360,15 @@ static int lstats_open(struct inode *inode, struct file *file)
return ret;
}
+static int lstats_release(struct inode *inode, struct file *file)
+{
+ struct seq_file *m = file->private_data;
+ struct task_struct *task = m->private;
+
+ put_task_struct(task);
+ return single_release(inode, file);
+}
+
static ssize_t lstats_write(struct file *file, const char __user *buf,
size_t count, loff_t *offs)
{
@@ -378,7 +387,7 @@ static const struct file_operations proc_lstats_operations = {
.read = seq_read,
.write = lstats_write,
.llseek = seq_lseek,
- .release = single_release,
+ .release = lstats_release,
};
#endif
--
1.5.3.8
--
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