6.6-stable review patch. If anyone has any objections, please let me know.
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From: Xi Ruoyao xry111@xry111.site
commit 6e3a4754717a74e931a9f00b5f953be708e07acb upstream.
When ACPI_MISALIGNMENT_NOT_SUPPORTED is set, GCC can produce a bogus -Wstringop-overread warning, see [1].
To me, it's very clear that we have a compiler bug here, thus just disable the warning.
Fixes: a9d13433fe17 ("LoongArch: Align ACPI structures if ARCH_STRICT_ALIGN enabled") Link: https://lore.kernel.org/all/899f2dec-e8b9-44f4-ab8d-001e160a2aed@roeck-us.ne... Link: https://github.com/acpica/acpica/commit/abf5b573 Link: https://gcc.gnu.org/PR122073 [1] Co-developed-by: Saket Dumbre saket.dumbre@intel.com Signed-off-by: Saket Dumbre saket.dumbre@intel.com Signed-off-by: Xi Ruoyao xry111@xry111.site Acked-by: Huacai Chen chenhuacai@loongson.cn Cc: All applicable stable@vger.kernel.org [ rjw: Subject and changelog edits ] Link: https://patch.msgid.link/20251021092825.822007-1-xry111@xry111.site Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/acpi/acpica/tbprint.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/acpi/acpica/tbprint.c +++ b/drivers/acpi/acpica/tbprint.c @@ -95,6 +95,11 @@ acpi_tb_print_table_header(acpi_physical { struct acpi_table_header local_header;
+#pragma GCC diagnostic push +#if defined(__GNUC__) && __GNUC__ >= 11 +#pragma GCC diagnostic ignored "-Wstringop-overread" +#endif + if (ACPI_COMPARE_NAMESEG(header->signature, ACPI_SIG_FACS)) {
/* FACS only has signature and length fields */ @@ -135,4 +140,5 @@ acpi_tb_print_table_header(acpi_physical local_header.asl_compiler_id, local_header.asl_compiler_revision)); } +#pragma GCC diagnostic pop }