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x86/pmem: Fix platform-device leak in error path
author
Johan Hovold
<johan@kernel.org>
Mon, 20 Jun 2022 14:07:23 +0000
(16:07 +0200)
committer
Borislav Petkov
<bp@suse.de>
Mon, 20 Jun 2022 16:01:16 +0000
(18:01 +0200)
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@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link:
https://lore.kernel.org/r/20220620140723.9810-1-johan@kernel.org
arch/x86/kernel/pmem.c
patch
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diff --git
a/arch/x86/kernel/pmem.c
b/arch/x86/kernel/pmem.c
index
6b07faa
..
23154d2
100644
(file)
--- 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);