From: syzbot <syzbot+921873345a95f4dae7e9@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [syzbot] [PATCH] netfs: Fix a KMSAN uninit-value error in netfs_clear_buffer
Date: Fri, 20 Sep 2024 17:23:40 -0700 [thread overview]
Message-ID: <66ee120c.050a0220.3195df.001f.GAE@google.com> (raw)
In-Reply-To: <66edaa30.050a0220.25340c.0006.GAE@google.com>
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Subject: [PATCH] netfs: Fix a KMSAN uninit-value error in netfs_clear_buffer
Author: marcus.yu.56@gmail.com
#syz test
Use kzalloc instead of kmalloc in netfs_buffer_append_folio to fix a KMSAN uninit-value error in netfs_clear_buffer
Signed-off-by: Chang Yu <marcus.yu.56@gmail.com>
---
fs/netfs/misc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/netfs/misc.c b/fs/netfs/misc.c
index 0ad0982ce0e2..6f967b6d30b6 100644
--- a/fs/netfs/misc.c
+++ b/fs/netfs/misc.c
@@ -22,7 +22,7 @@ int netfs_buffer_append_folio(struct netfs_io_request *rreq, struct folio *folio
return -EIO;
if (!tail || folioq_full(tail)) {
- tail = kmalloc(sizeof(*tail), GFP_NOFS);
+ tail = kzalloc(sizeof(*tail), GFP_NOFS);
if (!tail)
return -ENOMEM;
netfs_stat(&netfs_n_folioq);
--
2.46.0
next prev parent reply other threads:[~2024-09-21 0:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-20 17:00 [syzbot] [netfs?] KMSAN: uninit-value in netfs_clear_buffer syzbot
2024-09-21 0:23 ` syzbot [this message]
2024-10-01 5:46 ` [syzbot] [PATCH v2] netfs: Fix a KMSAN uninit-value error " syzbot
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