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From: Austin Kim <austindh.kim@gmail.com>
To: linux@armlinux.org.uk, arnd@arndb.de
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, austin.kim@lge.com,
	p4ranlee@gmail.com
Subject: [PATCH v2] arm: kdump: add invalid input check for 'crashkernel=0'
Date: Thu, 31 Mar 2022 12:24:16 +0100	[thread overview]
Message-ID: <20220331112416.GA1002@raspberrypi> (raw)

From: Austin Kim <austin.kim@lge.com>

Add invalid input check expression when 'crashkernel=0' is specified 
running kdump.

Signed-off-by: Austin Kim <austin.kim@lge.com>
---
 arch/arm/kernel/setup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 039feb7cd590..1e8a50a97edf 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1004,7 +1004,8 @@ static void __init reserve_crashkernel(void)
 	total_mem = get_total_mem();
 	ret = parse_crashkernel(boot_command_line, total_mem,
 				&crash_size, &crash_base);
-	if (ret)
+	/* invalid value specified or crashkernel=0 */
+	if (ret || !crash_size)
 		return;
 
 	if (crash_base <= 0) {
-- 
2.20.1


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WARNING: multiple messages have this Message-ID (diff)
From: Austin Kim <austindh.kim@gmail.com>
To: linux@armlinux.org.uk, arnd@arndb.de
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, austin.kim@lge.com,
	p4ranlee@gmail.com
Subject: [PATCH v2] arm: kdump: add invalid input check for 'crashkernel=0'
Date: Thu, 31 Mar 2022 12:24:16 +0100	[thread overview]
Message-ID: <20220331112416.GA1002@raspberrypi> (raw)

From: Austin Kim <austin.kim@lge.com>

Add invalid input check expression when 'crashkernel=0' is specified 
running kdump.

Signed-off-by: Austin Kim <austin.kim@lge.com>
---
 arch/arm/kernel/setup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 039feb7cd590..1e8a50a97edf 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1004,7 +1004,8 @@ static void __init reserve_crashkernel(void)
 	total_mem = get_total_mem();
 	ret = parse_crashkernel(boot_command_line, total_mem,
 				&crash_size, &crash_base);
-	if (ret)
+	/* invalid value specified or crashkernel=0 */
+	if (ret || !crash_size)
 		return;
 
 	if (crash_base <= 0) {
-- 
2.20.1


             reply	other threads:[~2022-03-31 11:25 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-31 11:24 Austin Kim [this message]
2022-03-31 11:24 ` [PATCH v2] arm: kdump: add invalid input check for 'crashkernel=0' Austin Kim
2022-03-31 13:05 ` Russell King (Oracle)
2022-03-31 13:05   ` Russell King (Oracle)
2022-03-31 20:16   ` Austin Kim
2022-03-31 20:16     ` Austin Kim

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