This is a note to let you know that I've just added the patch titled
x86/pmem: Fix platform-device leak in error path
to the 4.19-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:
x86-pmem-fix-platform-device-leak-in-error-path.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0ea6630b87ba89b1a715f08298101e5801fdcaeb
Author: Johan Hovold <johan@xxxxxxxxxx>
Date: Mon Jun 20 16:07:23 2022 +0200
x86/pmem: Fix platform-device leak in error path
[ Upstream commit 229e73d46994f15314f58b2d39bf952111d89193 ]
Make sure to free the platform device in the unlikely event that
registration fails.
Fixes: 7a67832c7e44 ("libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option")
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Link: https://lore.kernel.org/r/20220620140723.9810-1-johan@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/x86/kernel/pmem.c b/arch/x86/kernel/pmem.c
index 6b07faaa1579..23154d24b117 100644
--- a/arch/x86/kernel/pmem.c
+++ b/arch/x86/kernel/pmem.c
@@ -27,6 +27,11 @@ static __init int register_e820_pmem(void)
* simply here to trigger the module to load on demand.
*/
pdev = platform_device_alloc("e820_pmem", -1);
- return platform_device_add(pdev);
+
+ rc = platform_device_add(pdev);
+ if (rc)
+ platform_device_put(pdev);
+
+ return rc;
}
device_initcall(register_e820_pmem);
