Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH] USB: fix memory leak with using debugfs_lookup() | Date | Fri, 6 Jan 2023 16:28:28 +0100 |
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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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/usb/core/usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 11b15d7b357a..a415206cab04 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -998,7 +998,7 @@ 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); } /* -- 2.39.0
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