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ksmbd: fix memory leak in smb2_lock()

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[ Upstream commit 8f17527230 ]

In smb2_lock(), if setup_async_work() executes successfully,
work->cancel_argv will bind the argv that generated by kmalloc(). And
release_async_work() is called in ksmbd_conn_try_dequeue_request() or
smb2_lock() to release argv.
However, when setup_async_work function fails, work->cancel_argv has not
been bound to the argv, resulting in the previously allocated argv not
being released. Call kfree() to fix it.

Fixes: e2f34481b2 ("cifsd: add server-side procedures for SMB3")
Signed-off-by: Zizhi Wo <wozizhi@huawei.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zizhi Wo 2023-12-01 22:50:48 +08:00 committed by Greg Kroah-Hartman
parent fd0d9b1674
commit a69d8ee03c
1 changed files with 1 additions and 0 deletions
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1
fs/ksmbd/smb2pdu.c
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@ -7068,6 +7068,7 @@ int smb2_lock(struct ksmbd_work *work)
smb2_remove_blocked_lock,
argv);
if (rc) {
kfree(argv);
err = -ENOMEM;
goto out;
}