This is a note to let you know that I've just added the patch titled net: ionic: Fix error handling in ionic_init_module() to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ionic-fix-error-handling-in-ionic_init_module.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f85b92f30389e1cbf94c3af9438c098a46637a2a Author: Yuan Can <yuancan@xxxxxxxxxx> Date: Sun Nov 13 09:29:29 2022 +0000 net: ionic: Fix error handling in ionic_init_module() [ Upstream commit 280c0f7cd0aa4d190619b18243110e052a90775c ] A problem about ionic create debugfs failed is triggered with the following log given: [ 415.799514] debugfs: Directory 'ionic' with parent '/' already present! The reason is that ionic_init_module() returns ionic_bus_register_driver() directly without checking its return value, if ionic_bus_register_driver() failed, it returns without destroy the newly created debugfs, resulting the debugfs of ionic can never be created later. ionic_init_module() ionic_debugfs_create() # create debugfs directory ionic_bus_register_driver() pci_register_driver() driver_register() bus_add_driver() priv = kzalloc(...) # OOM happened # return without destroy debugfs directory Fix by removing debugfs when ionic_bus_register_driver() returns error. Fixes: fbfb8031533c ("ionic: Add hardware init and device commands") Signed-off-by: Yuan Can <yuancan@xxxxxxxxxx> Acked-by: Shannon Nelson <snelson@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20221113092929.19161-1-yuancan@xxxxxxxxxx Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c index f60ffef33e0c..00b6985edea0 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_main.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c @@ -569,8 +569,14 @@ int ionic_port_reset(struct ionic *ionic) static int __init ionic_init_module(void) { + int ret; + ionic_debugfs_create(); - return ionic_bus_register_driver(); + ret = ionic_bus_register_driver(); + if (ret) + ionic_debugfs_destroy(); + + return ret; } static void __exit ionic_cleanup_module(void)