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 <[email protected]> --- diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 847107e..e366c74 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3002,7 +3002,8 @@ static int mtip_hw_debugfs_init(struct driver_data *dd) static void mtip_hw_debugfs_exit(struct driver_data *dd) { - debugfs_remove_recursive(dd->dfs_node); + if (dd->dfs_node) + debugfs_remove_recursive(dd->dfs_node); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
