This is a note to let you know that I've just added the patch titled ARM: cns3xxx: shut up frame size warning to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm-cns3xxx-shut-up-frame-size-warning.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From arnd@xxxxxxxx Thu May 4 15:27:13 2017 From: Arnd Bergmann <arnd@xxxxxxxx> Date: Thu, 4 May 2017 22:51:57 +0200 Subject: ARM: cns3xxx: shut up frame size warning To: gregkh@xxxxxxxxxxxxxxxxxxx Cc: stable@xxxxxxxxxxxxxxx, Arnd Bergmann <arnd@xxxxxxxx> Message-ID: <20170504205209.498721-2-arnd@xxxxxxxx> From: Arnd Bergmann <arnd@xxxxxxxx> This shuts up a warning in the 3.18-stable series that has been fixed in newer kernels with commit 498a92d42596 ("ARM: cns3xxx: pci: avoid potential stack overflow"): arch/arm/mach-cns3xxx/pcie.c: In function 'cns3xxx_pcie_hw_init': arch/arm/mach-cns3xxx/pcie.c:313:1: error: the frame size of 1080 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] The fix that went into v4.4 is known to be buggy and was later fixed again with commit 88e9da9a2a70 ("CNS3xxx: Fix PCI cns3xxx_write_config()"). While we could backport both to 3.18, they are fairly invasive and the warning is definitely harmless here as the call chain is known to not overflow the stack of the init task. This simply adds a Makefile flag to extend the limit for this one file. Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- We do want 88e9da9a2a70 ("CNS3xxx: Fix PCI cns3xxx_write_config()") backported into v4.4 though. --- arch/arm/mach-cns3xxx/Makefile | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm/mach-cns3xxx/Makefile +++ b/arch/arm/mach-cns3xxx/Makefile @@ -2,4 +2,5 @@ obj-$(CONFIG_ARCH_CNS3XXX) += cns3xxx.o cns3xxx-y += core.o pm.o cns3xxx-$(CONFIG_ATAGS) += devices.o cns3xxx-$(CONFIG_PCI) += pcie.o +CFLAGS_pcie.o += -Wframe-larger-than=1536 # override default 1024, this is safe here cns3xxx-$(CONFIG_MACH_CNS3420VB) += cns3420vb.o Patches currently in stable-queue which might be from arnd@xxxxxxxx are queue-3.18/ib-iser-fix-sparse-warnings.patch queue-3.18/cred-userns-define-current_user_ns-as-a-function.patch queue-3.18/pci-xilinx-fix-harmless-format-string-warning.patch queue-3.18/arm64-build-vdso-without-libgcov.patch queue-3.18/arm64-provide-a-namespace-to-ncaps.patch queue-3.18/alsa-ppc-awacs-shut-up-maybe-uninitialized-warning.patch queue-3.18/net-tg3-avoid-uninitialized-variable-warning.patch queue-3.18/tty-isicom-fix-big-endian-compile-warning.patch queue-3.18/mtd-avoid-stack-overflow-in-mtd-cfi-code.patch queue-3.18/ib-qib-rename-bits_per_page-to-rvt_bits_per_page.patch queue-3.18/ips-remove-pointless-warning.patch queue-3.18/powerpc-ptrace-fix-out-of-bounds-array-access-warning.patch queue-3.18/staging-imx-drm-fix-indentation-warning.patch queue-3.18/mlx5-avoid-build-warnings-on-32-bit.patch queue-3.18/mm-cma-silence-warnings-due-to-max-usage.patch queue-3.18/misdn-avoid-arch-specific-__builtin_return_address-call.patch queue-3.18/staging-bcm-add-32-bit-host-dependency.patch queue-3.18/staging-vt6655-fix-overly-large-stack-usage.patch queue-3.18/drbd-avoid-redefinition-of-bits_per_page.patch queue-3.18/infiniband-mlx5-avoid-a-compile-time-warning.patch queue-3.18/arm-cns3xxx-shut-up-frame-size-warning.patch queue-3.18/ib-ehca-fix-maybe-uninitialized-warnings.patch