Re: [syzbot] [syzbot] [nfs?] KMSAN: kernel-infoleak in sys_name_to_handle_at (4)

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Subject: [syzbot] [nfs?] KMSAN: kernel-infoleak in sys_name_to_handle_at (4)
Author: n.zhandarovich@xxxxxxxxxx

Try using kzalloc() instead of kmalloc() in do_sys_name_to_handle()

#syz test: https://github.com/google/kmsan.git master

---
 fs/fhandle.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fhandle.c b/fs/fhandle.c
index 18b3ba8dc8ea..57a12614addf 100644
--- a/fs/fhandle.c
+++ b/fs/fhandle.c
@@ -36,7 +36,7 @@ static long do_sys_name_to_handle(const struct path *path,
 	if (f_handle.handle_bytes > MAX_HANDLE_SZ)
 		return -EINVAL;
 
-	handle = kmalloc(sizeof(struct file_handle) + f_handle.handle_bytes,
+	handle = kzalloc(sizeof(struct file_handle) + f_handle.handle_bytes,
 			 GFP_KERNEL);
 	if (!handle)
 		return -ENOMEM;
-- 
2.25.1