From: Rickard x Andersson rickaran@axis.com
In GCC version 12.1 a checksum field was added.
This patch fixes a kernel crash occurring during boot when using gcov-kernel with GCC version 12.2. The crash occurred on a system running on i.MX6SX.
Fixes: 977ef30a7d88 ("gcov: support GCC 12.1 and newer compilers") Signed-off-by: Rickard x Andersson rickaran@axis.com Reviewed-by: Peter Oberparleiter oberpar@linux.ibm.com Tested-by: Peter Oberparleiter oberpar@linux.ibm.com Cc: stable@vger.kernel.org --- kernel/gcov/gcc_4_7.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/kernel/gcov/gcc_4_7.c b/kernel/gcov/gcc_4_7.c index c699feda21ac..04880d8fba25 100644 --- a/kernel/gcov/gcc_4_7.c +++ b/kernel/gcov/gcc_4_7.c @@ -85,6 +85,7 @@ struct gcov_fn_info { * @version: gcov version magic indicating the gcc version used for compilation * @next: list head for a singly-linked list * @stamp: uniquifying time stamp + * @checksum: unique object checksum * @filename: name of the associated gcov data file * @merge: merge functions (null for unused counter type) * @n_functions: number of instrumented functions @@ -97,6 +98,10 @@ struct gcov_info { unsigned int version; struct gcov_info *next; unsigned int stamp; + /* Since GCC 12.1 a checksum field is added. */ +#if (__GNUC__ >= 12) + unsigned int checksum; +#endif const char *filename; void (*merge[GCOV_COUNTERS])(gcov_type *, unsigned int); unsigned int n_functions;