From c5ed1fe0801f0c66b0fbce2785239a5664629057 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Fri, 4 Nov 2022 11:39:45 +0800 Subject: [PATCH] MIPS: vpe-cmp: fix possible memory leak while module exiting dev_set_name() allocates memory for name, it need be freed when module exiting, call put_device() to give up reference, so that it can be freed in kobject_cleanup() when the refcount hit to 0. The vpe_device is static, so remove kfree() from vpe_device_release(). Fixes: 17a1d523aa58 ("MIPS: APRP: Add VPE loader support for CMP platforms.") Signed-off-by: Yang Yingliang Signed-off-by: Thomas Bogendoerfer --- arch/mips/kernel/vpe-cmp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/kernel/vpe-cmp.c b/arch/mips/kernel/vpe-cmp.c index e673603e11e5..92140edb3ce3 100644 --- a/arch/mips/kernel/vpe-cmp.c +++ b/arch/mips/kernel/vpe-cmp.c @@ -75,7 +75,6 @@ ATTRIBUTE_GROUPS(vpe); static void vpe_device_release(struct device *cd) { - kfree(cd); } static struct class vpe_class = { @@ -157,6 +156,7 @@ out_dev: device_del(&vpe_device); out_class: + put_device(&vpe_device); class_unregister(&vpe_class); out_chrdev: @@ -169,7 +169,7 @@ void __exit vpe_module_exit(void) { struct vpe *v, *n; - device_del(&vpe_device); + device_unregister(&vpe_device); class_unregister(&vpe_class); unregister_chrdev(major, VPE_MODULE_NAME); -- 2.11.0