[PATCH] arm: kdump: add invalid value check for 'crashkernel='

Austin Kim
2022-03-30T11:07:25Z

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

Add invalid value check expression when no crashkernel= or invalid value
specified using 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..8018d71ccaed 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)
+ /* no crashkernel= or invalid value specified */
+ if (ret || !crash_size)
return;

if (crash_base <= 0) {
--
2.20.1