linux-kernel - [PATCH] ACPI: Fix memory leak in acpi_ev_asynch_execute_gpe

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Message-ID: <alpine.LNX.2.00.1101162033531.13377@swampdragon.chaosbits.net>
Date:	Sun, 16 Jan 2011 20:37:52 +0100 (CET)
From:	Jesper Juhl <jj@...osbits.net>
To:	linux-acpi@...r.kernel.org
cc:	linux-kernel@...r.kernel.org, Len Brown <lenb@...nel.org>,
	Lin Ming <ming.m.lin@...el.com>
Subject: [PATCH] ACPI: Fix memory leak in
 acpi_ev_asynch_execute_gpe_method().

We will leak the memory allocated to 'local_gpe_event_info' if 
'acpi_ut_acquire_mutex()' fails or if 'acpi_ev_valid_gpe_event()' fails in 
drivers/acpi/acpica/evgpe.c::acpi_ev_asynch_execute_gpe_method().

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 evgpe.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 7c339d3..b6de1fb 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -471,6 +471,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 
 	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
 	if (ACPI_FAILURE(status)) {
+		ACPI_FREE(local_gpe_event_info);
 		return_VOID;
 	}
 
@@ -478,6 +479,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 
 	if (!acpi_ev_valid_gpe_event(gpe_event_info)) {
 		status = acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+		ACPI_FREE(local_gpe_event_info);
 		return_VOID;
 	}
 

-- 
Jesper Juhl <jj@...osbits.net>            http://www.chaosbits.net/
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
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