Commit 974a51a2 authored May 15, 2013 by Sam Bradshaw Committed by Jens Axboe May 15, 2013

mtip32xx: Fix NULL pointer dereference during module unload



An open file-handle to one or more of the driver exported debugfs
nodes causes raciness in recursive removal during module unload;
sometimes a stale parent dentry is dereferenced when more than 1
pci device is present.

Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent f722406f

drivers/block/mtip32xx/mtip32xx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -3002,6 +3002,7 @@ static int mtip_hw_debugfs_init(struct driver_data *dd)

		static void mtip_hw_debugfs_exit(struct driver_data *dd)
		{
		if (dd->dfs_node)
		debugfs_remove_recursive(dd->dfs_node);
		}