perf_stats_show() and flags_show() build their output with a seq_buf
and return seq_buf_used(), which may include the trailing NUL byte
when the seq_buf has overflowed. Use seq_buf_strlen() instead. As
suggested in review, use it as well for flags_show()'s check whether
any flag was printed.
Build tested ARCH=powerpc ppc64_defconfig with GCC powerpc64-linux-gnu
16.2.0:
arch/powerpc/platforms/pseries/papr_scm.o
Assisted-by: LLM
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Kees Cook <kees@kernel.org>
Sashiko has reviewed this patch and found no issues. It looks great!
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Sashiko AI review · https://sashiko.dev/#/patchset/20261003035906.too.263-kees@kernel.org?part=9