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fix: cast LTTNG_KERNEL_VERSION/LTTNG_LINUX_VERSION_CODE to uint64_t
[deliverable/lttng-modules.git]
/
include
/
lttng
/
kernel-version.h
diff --git
a/include/lttng/kernel-version.h
b/include/lttng/kernel-version.h
index a41829f0a6160ee33be6f8ea9da258910148c752..747a674fc80cab132e0d7fe9ddf2e97b42e91c33 100644
(file)
--- a/
include/lttng/kernel-version.h
+++ b/
include/lttng/kernel-version.h
@@
-11,6
+11,7
@@
#define _LTTNG_KERNEL_VERSION_H
#include <linux/version.h>
#define _LTTNG_KERNEL_VERSION_H
#include <linux/version.h>
+#include <linux/types.h>
#include <generated/utsrelease.h>
/*
#include <generated/utsrelease.h>
/*
@@
-40,19
+41,22
@@
* of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
* Otherwise, keep using the version code from the headers to minimise the
* behavior change and avoid regressions.
* of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
* Otherwise, keep using the version code from the headers to minimise the
* behavior change and avoid regressions.
+ *
+ * Cast the result to uint64_t to prevent overflowing when we append distro
+ * specific version information.
*/
#if (LTTNG_LINUX_PATCH >= 256)
#define LTTNG_KERNEL_VERSION(a, b, c) \
*/
#if (LTTNG_LINUX_PATCH >= 256)
#define LTTNG_KERNEL_VERSION(a, b, c) \
- (((
a) << 24) + ((b) << 16) + (c)
)
+ (((
(a) << 24) + ((b) << 16) + (c)) * 1ULL
)
#define LTTNG_LINUX_VERSION_CODE \
LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)
#else
#define LTTNG_LINUX_VERSION_CODE \
LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)
#else
-#define LTTNG_KERNEL_VERSION(a, b, c)
KERNEL_VERSION(a, b, c
)
-#define LTTNG_LINUX_VERSION_CODE
LINUX_VERSION_CODE
+#define LTTNG_KERNEL_VERSION(a, b, c)
(KERNEL_VERSION(a, b, c) * 1ULL
)
+#define LTTNG_LINUX_VERSION_CODE
(LINUX_VERSION_CODE * 1ULL)
#endif
#endif
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