linux-kernel - [PATCH 3.16 002/136] staging: lustre: ptlrpc: kfree used instead of kvfree

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Date:   Sun, 11 Feb 2018 04:31:11 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Andreas Dilger" <andreas.dilger@...el.com>,
        "Oleg Drokin" <oleg.drokin@...el.com>,
        "Peng Tao" <bergwolf@...il.com>,
        "James Simmons" <jsimmons@...radead.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "Nadav Amit" <namit@...are.com>
Subject: [PATCH 3.16 002/136] staging: lustre: ptlrpc: kfree used instead
 of kvfree

3.16.54-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Nadav Amit <namit@...are.com>

commit c3eec59659cf25916647d2178c541302bb4822ad upstream.

rq_reqbuf is allocated using kvmalloc() but released in one occasion
using kfree() instead of kvfree().

The issue was found using grep based on a similar bug.

Fixes: d7e09d0397e8 ("add Lustre file system client support")
Fixes: ee0ec1946ec2 ("lustre: ptlrpc: Replace uses of OBD_{ALLOC,FREE}_LARGE")

Cc: Peng Tao <bergwolf@...il.com>
Cc: Oleg Drokin <oleg.drokin@...el.com>
Cc: James Simmons <jsimmons@...radead.org>

Signed-off-by: Nadav Amit <namit@...are.com>
Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
[bwh: Backported to 3.16: use OBD_FREE_LARGE()]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/staging/lustre/lustre/ptlrpc/sec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/lustre/lustre/ptlrpc/sec.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec.c
@@ -867,7 +867,7 @@ void sptlrpc_request_out_callback(struct
 	if (req->rq_pool || !req->rq_reqbuf)
 		return;
 
-	OBD_FREE(req->rq_reqbuf, req->rq_reqbuf_len);
+	OBD_FREE_LARGE(req->rq_reqbuf, req->rq_reqbuf_len);
 	req->rq_reqbuf = NULL;
 	req->rq_reqbuf_len = 0;
 }