Linux-Fsdevel Archive on lore.kernel.org
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* [PATCH] fuse: fix memleak in cuse_channel_open
@ 2019-08-14  7:59 zhengbin
  0 siblings, 0 replies; only message in thread
From: zhengbin @ 2019-08-14  7:59 UTC (permalink / raw)
  To: mszeredi, ashish.samant, miklos, linux-fsdevel; +Cc: yi.zhang, zhengbin13

If cuse_send_init fails, need to fuse_conn_put cc->fc.

cuse_channel_open->fuse_conn_init->refcount_set(&fc->count, 1)
                 ->fuse_dev_alloc->fuse_conn_get
                 ->fuse_dev_free->fuse_conn_put

Fixes: cc080e9e9be1 ("fuse: introduce per-instance fuse_dev structure")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 fs/fuse/cuse.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index bab7a0d..f3b7208 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -519,6 +519,7 @@ static int cuse_channel_open(struct inode *inode, struct file *file)
 	rc = cuse_send_init(cc);
 	if (rc) {
 		fuse_dev_free(fud);
+		fuse_conn_put(&cc->fc);
 		return rc;
 	}
 	file->private_data = fud;
--
2.7.4


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2019-08-14  7:59 [PATCH] fuse: fix memleak in cuse_channel_open zhengbin

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