USB: fix memory leak with using debugfs_lookup()
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 6 Jan 2023 15:28:28 +0000 (16:28 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 11 Mar 2023 12:57:34 +0000 (13:57 +0100)
commit6683327b51a601daba32900072349dfa1d4e8fea
tree51279bde4107bdaf4aded0a668d5d83de0607ee0
parentb32d922f86f3870558b20d310c78d492c631d08e
USB: fix memory leak with using debugfs_lookup()

[ Upstream commit 30374434edab20e25776f8ecb4bc9d1e54309487 ]

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: Alan Stern <stern@rowland.harvard.edu>
Cc: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20230106152828.3790902-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/usb/core/usb.c