This is a note to let you know that I've just added the patch titled mfd: syscon: Free the allocated name field of struct regmap_config to the 5.13-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: mfd-syscon-free-the-allocated-name-field-of-struct-regmap_config.patch and it can be found in the queue-5.13 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 56a1188159cb2b87fbcb5a7a7afb38a4dd9db0c1 Mon Sep 17 00:00:00 2001 From: Limeng <Meng.Li@xxxxxxxxxxxxx> Date: Wed, 7 Apr 2021 13:25:25 +0800 Subject: mfd: syscon: Free the allocated name field of struct regmap_config From: Limeng <Meng.Li@xxxxxxxxxxxxx> commit 56a1188159cb2b87fbcb5a7a7afb38a4dd9db0c1 upstream. The commit 529a1101212a("mfd: syscon: Don't free allocated name for regmap_config") doesn't free the allocated name field of struct regmap_config, but introduce a memory leak. There is another commit 94cc89eb8fa5("regmap: debugfs: Fix handling of name string for debugfs init delays") fixing this debugfs init issue from root cause. With this fixing, the name field in struct regmap_debugfs_node is removed. When initialize debugfs for syscon driver, the name field of struct regmap_config is not used anymore. So, the allocated name field of struct regmap_config is need to be freed directly after regmap initialization to avoid memory leak. Cc: stable@xxxxxxxxxxxxxxx Fixes: 529a1101212a("mfd: syscon: Don't free allocated name for regmap_config") Signed-off-by: Meng Li <Meng.Li@xxxxxxxxxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/mfd/syscon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mfd/syscon.c +++ b/drivers/mfd/syscon.c @@ -108,6 +108,7 @@ static struct syscon *of_syscon_register syscon_config.max_register = resource_size(&res) - reg_io_width; regmap = regmap_init_mmio(NULL, base, &syscon_config); + kfree(syscon_config.name); if (IS_ERR(regmap)) { pr_err("regmap init failed\n"); ret = PTR_ERR(regmap); @@ -144,7 +145,6 @@ err_clk: regmap_exit(regmap); err_regmap: iounmap(base); - kfree(syscon_config.name); err_map: kfree(syscon); return ERR_PTR(ret); Patches currently in stable-queue which might be from Meng.Li@xxxxxxxxxxxxx are queue-5.13/mfd-syscon-free-the-allocated-name-field-of-struct-regmap_config.patch