From: Greg Kroah-Hartman gregkh@linuxfoundation.org
commit 6dfb0771429a63db8561d44147f2bb76f93e1c86 upstream.
When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.
Cc: "K. Y. Srinivasan" kys@microsoft.com Cc: Haiyang Zhang haiyangz@microsoft.com Cc: Wei Liu wei.liu@kernel.org Cc: Dexuan Cui decui@microsoft.com Fixes: d180e0a1be6c ("Drivers: hv: Create debugfs file with hyper-v balloon usage information") Cc: stable stable@kernel.org Reviewed-by: Michael Kelley mikelley@microsoft.com Link: https://lore.kernel.org/r/20230202140918.2289522-1-gregkh@linuxfoundation.or... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hv/hv_balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -1911,7 +1911,7 @@ static void hv_balloon_debugfs_init(str
static void hv_balloon_debugfs_exit(struct hv_dynmem_device *b) { - debugfs_remove(debugfs_lookup("hv-balloon", NULL)); + debugfs_lookup_and_remove("hv-balloon", NULL); }
#else