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USB: fix memory leak with using debugfs_lookup()

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[ 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>
This commit is contained in:
Greg Kroah-Hartman
2023-01-06 16:28:28 +01:00
parent b32d922f86
commit 6683327b51
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/core/usb.c
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@@ -1036,7 +1036,7 @@ static void usb_debugfs_init(void)
static void usb_debugfs_cleanup(void)
{
debugfs_remove(debugfs_lookup("devices", usb_debug_root));
debugfs_lookup_and_remove("devices", usb_debug_root);
}
/*