linux-toradex.git/scripts/gcc-plugins, branch toradex_6.6-2.0.x-imx

Merge tag 'v6.6.20' into lf-6.6.y

2024-03-11T06:59:44+00:00

This is the 6.6.20 stable release

* tag 'v6.6.20': (3154 commits)
  Linux 6.6.20
  fs/ntfs3: fix build without CONFIG_NTFS3_LZX_XPRESS
  Linux 6.6.19
  ...

Signed-off-by: Jason Liu 

 Conflicts:
	arch/arm64/boot/dts/freescale/imx8mm.dtsi
	arch/arm64/boot/dts/freescale/imx8mq.dtsi
	drivers/clk/imx/clk-imx8qxp.c
	drivers/dma/fsl-edma.c
	drivers/firmware/arm_scmi/perf.c
	drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
	drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
	drivers/net/ethernet/freescale/fec_main.c
	drivers/scsi/scsi_error.c
	drivers/spi/spi-imx.c
	sound/soc/fsl/fsl_sai.c

gcc-plugins: randstruct: Update code comment in relayout_struct()

2023-12-13T17:45:35+00:00

commit d71f22365a9caca82d424f3a33445de46567e198 upstream.

Update code comment to clarify that the only element whose layout is
not randomized is a proper C99 flexible-array member. This update is
complementary to commit 1ee60356c2dc ("gcc-plugins: randstruct: Only
warn about true flexible arrays")

Signed-off-by: "Gustavo A. R. Silva" 
Link: https://lore.kernel.org/r/ZWJr2MWDjXLHE8ap@work
Fixes: 1ee60356c2dc ("gcc-plugins: randstruct: Only warn about true flexible arrays")
Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'v6.6.3' into lf-6.6.y

2023-11-30T15:41:12+00:00

This is the 6.6.3 stable release

* tag 'v6.6.3': (526 commits)
  Linux 6.6.3
  drm/amd/display: Change the DMCUB mailbox memory location from FB to inbox
  drm/amd/display: Clear dpcd_sink_ext_caps if not set
  ...

Signed-off-by: Jason Liu 

 Conflicts:
	arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi
	drivers/usb/dwc3/core.c

randstruct: Fix gcc-plugin performance mode to stay in group

2023-11-28T17:19:55+00:00

commit 381fdb73d1e2a48244de7260550e453d1003bb8e upstream.

The performance mode of the gcc-plugin randstruct was shuffling struct
members outside of the cache-line groups. Limit the range to the
specified group indexes.

Cc: linux-hardening@vger.kernel.org
Cc: stable@vger.kernel.org
Reported-by: Lukas Loidolt 
Closes: https://lore.kernel.org/all/f3ca77f0-e414-4065-83a5-ae4c4d25545d@student.tuwien.ac.at
Fixes: 313dd1b62921 ("gcc-plugins: Add the randstruct plugin")
Signed-off-by: Kees Cook 
Signed-off-by: Greg Kroah-Hartman

gcc-plugins: randstruct: Only warn about true flexible arrays

2023-11-28T17:19:49+00:00

[ Upstream commit 1ee60356c2dca938362528404af95b8ef3e49b6a ]

The randstruct GCC plugin tried to discover "fake" flexible arrays
to issue warnings about them in randomized structs. In the future
LSM overhead reduction series, it would be legal to have a randomized
struct with a 1-element array, and this should _not_ be treated as a
flexible array, especially since commit df8fc4e934c1 ("kbuild: Enable
-fstrict-flex-arrays=3"). Disable the 0-sized and 1-element array
discovery logic in the plugin, but keep the "true" flexible array check.

Cc: KP Singh 
Cc: linux-hardening@vger.kernel.org
Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202311021532.iBwuZUZ0-lkp@intel.com/
Fixes: df8fc4e934c1 ("kbuild: Enable -fstrict-flex-arrays=3")
Reviewed-by: Bill Wendling 
Acked-by: "Gustavo A. R. Silva" 
Link: https://lore.kernel.org/r/20231104204334.work.160-kees@kernel.org
Signed-off-by: Kees Cook 
Signed-off-by: Sasha Levin

LF-2702 scripts: gcc-plugins: make GCC_PLUGINS not default to y

2023-10-30T07:13:55+00:00

Currently CONFIG_GCC_PLUGINS is auto enabled by detecting host
build environment as follows:
"depends on $(success,$(srctree)/scripts/gcc-plugin.sh $(CC))"

This potentially cause an inconsistency issue of images built
from two machines e.g. kernel modules built by ourselves
maybe unable to load with a prebuilt kernel image and vice versa.
(Affected by STACKPROTECTOR_PER_TASK which is also default y and
depends on GCC_PLUGINS)

In order to address this image inconsistency issue, we make the
GCC_PLUGINS option not default to y and reply on users to select it
from defconfig file once their host environment can meet the requirement
and want this option enabled.

This issue happened with GCC 10.2 toolchain and have gcc-10-plugin-dev
package installed on host after migrated to Yocto 3.2.

Acked-by: Jason Liu 
Signed-off-by: Dong Aisheng

gcc-plugins: Rename last_stmt() for GCC 14+

2023-08-11T06:10:09+00:00

In GCC 14, last_stmt() was renamed to last_nondebug_stmt(). Add a helper
macro to handle the renaming.

Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook

Merge branch 'for-linus/hardening' into for-next/hardening

2023-02-02T18:43:28+00:00

gcc-plugins: drop -std=gnu++11 to fix GCC 13 build

2023-02-02T16:31:23+00:00

The latest GCC 13 snapshot (13.0.1 20230129) gives the following:
```
cc1: error: cannot load plugin ./scripts/gcc-plugins/randomize_layout_plugin.so
 :./scripts/gcc-plugins/randomize_layout_plugin.so: undefined symbol: tree_code_type
```

This ends up being because of https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=b0241ce6e37031
upstream in GCC which changes the visibility of some types used by the kernel's
plugin infrastructure like tree_code_type.

After discussion with the GCC folks, we found that the kernel needs to be building
plugins with the same flags used to build GCC - and GCC defaults to gnu++17
right now. The minimum GCC version needed to build the kernel is GCC 5.1
and GCC 5.1 already defaults to gnu++14 anyway, so just drop the flag, as
all GCCs that could be used to build GCC already default to an acceptable
version which was >= the version we forced via flags until now.

Bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108634
Signed-off-by: Sam James 
Signed-off-by: Kees Cook 
Link: https://lore.kernel.org/r/20230201230009.2252783-1-sam@gentoo.org

gcc-plugins: Reorganize gimple includes for GCC 13

2023-01-25T20:24:48+00:00

The gimple-iterator.h header must be included before gimple-fold.h
starting with GCC 13. Reorganize gimple headers to work for all GCC
versions.

Reported-by: Palmer Dabbelt 
Acked-by: Palmer Dabbelt 
Link: https://lore.kernel.org/all/20230113173033.4380-1-palmer@rivosinc.com/
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook