From: wu000273@umn.edu
To: kjlu@umn.edu
Cc: wu000273@umn.edu, "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>,
Prashanth Prakash <pprakash@codeaurora.org>,
Ashwin Chaugule <ashwin.chaugule@linaro.org>,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe.
Date: Wed, 27 May 2020 17:35:51 -0500 [thread overview]
Message-ID: <20200527223551.20156-1-wu000273@umn.edu> (raw)
From: Qiushi Wu <wu000273@umn.edu>
kobject_init_and_add() takes reference even when it fails.
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object. Previous
commit "b8eb718348b8" fixed a similar problem.
Fixes: 158c998ea44b ("ACPI / CPPC: add sysfs support to compute delivered performance")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
---
drivers/acpi/cppc_acpi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 8b2e89c20c11..067067bc03d4 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -846,6 +846,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
"acpi_cppc");
if (ret) {
per_cpu(cpc_desc_ptr, pr->id) = NULL;
+ kobject_put(&cpc_ptr->kobj);
goto out_free;
}
--
2.17.1
next reply other threads:[~2020-05-27 22:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-27 22:35 wu000273 [this message]
2020-05-28 11:49 ` [PATCH] ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe Rafael J. Wysocki
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