From: Christian Marangi Date: Fri, 9 Jun 2023 20:09:42 +0000 (+0200) Subject: generic: backport PPC boot wrapper VDSO executable stack fix X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=1c058f9b183650453a2b29b3f56922c688991713;p=openwrt%2Fstaging%2Fneocturne.git generic: backport PPC boot wrapper VDSO executable stack fix Backport upstream fix for PowerPC that fix VDSO executable stack warning for the boot wrapper. Fix the compilation error: powerpc-openwrt-linux-musl-ld.bin: warning: div64.o: missing .note.GNU-stack section implies executable stack powerpc-openwrt-linux-musl-ld.bin: NOTE: This behaviour is deprecated and will be removed in a future version of the linker powerpc-openwrt-linux-musl-ld.bin: warning: arch/powerpc/boot/simpleImage.ws-ap3825i has a LOAD segment with RWX permissions Signed-off-by: Christian Marangi --- diff --git a/target/linux/generic/backport-5.15/303-v6.2-powerpc-suppress-some-linker-warnings-in-recent-link.patch b/target/linux/generic/backport-5.15/303-v6.2-powerpc-suppress-some-linker-warnings-in-recent-link.patch new file mode 100644 index 0000000000..7c1507bba7 --- /dev/null +++ b/target/linux/generic/backport-5.15/303-v6.2-powerpc-suppress-some-linker-warnings-in-recent-link.patch @@ -0,0 +1,63 @@ +From 579aee9fc594af94c242068c011b0233563d4bbf Mon Sep 17 00:00:00 2001 +From: Stephen Rothwell +Date: Mon, 10 Oct 2022 16:57:21 +1100 +Subject: [PATCH] powerpc: suppress some linker warnings in recent linker + versions + +This is a follow on from commit + + 0d362be5b142 ("Makefile: link with -z noexecstack --no-warn-rwx-segments") + +for arch/powerpc/boot to address wanrings like: + + ld: warning: opal-calls.o: missing .note.GNU-stack section implies executable stack + ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker + ld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissions + +This fixes issue https://github.com/linuxppc/issues/issues/417 + +Signed-off-by: Stephen Rothwell +Signed-off-by: Michael Ellerman +Link: https://lore.kernel.org/r/20221010165721.106267e6@canb.auug.org.au +--- + arch/powerpc/boot/wrapper | 15 ++++++++++++++- + 1 file changed, 14 insertions(+), 1 deletion(-) + +--- a/arch/powerpc/boot/wrapper ++++ b/arch/powerpc/boot/wrapper +@@ -213,6 +213,11 @@ ld_version() + }' + } + ++ld_is_lld() ++{ ++ ${CROSS}ld -V 2>&1 | grep -q LLD ++} ++ + # Do not include PT_INTERP segment when linking pie. Non-pie linking + # just ignores this option. + LD_VERSION=$(${CROSS}ld --version | ld_version) +@@ -221,6 +226,14 @@ if [ "$LD_VERSION" -ge "$LD_NO_DL_MIN_VE + nodl="--no-dynamic-linker" + fi + ++# suppress some warnings in recent ld versions ++nowarn="-z noexecstack" ++if ! ld_is_lld; then ++ if [ "$LD_VERSION" -ge "$(echo 2.39 | ld_version)" ]; then ++ nowarn="$nowarn --no-warn-rwx-segments" ++ fi ++fi ++ + platformo=$object/"$platform".o + lds=$object/zImage.lds + ext=strip +@@ -502,7 +515,7 @@ if [ "$platform" != "miboot" ]; then + text_start="-Ttext $link_address" + fi + #link everything +- ${CROSS}ld -m $format -T $lds $text_start $pie $nodl $rodynamic $notext -o "$ofile" $map \ ++ ${CROSS}ld -m $format -T $lds $text_start $pie $nodl $nowarn $rodynamic $notext -o "$ofile" $map \ + $platformo $tmp $object/wrapper.a + rm $tmp + fi diff --git a/target/linux/generic/backport-6.1/300-v6.2-powerpc-suppress-some-linker-warnings-in-recent-link.patch b/target/linux/generic/backport-6.1/300-v6.2-powerpc-suppress-some-linker-warnings-in-recent-link.patch new file mode 100644 index 0000000000..d8d0cf9555 --- /dev/null +++ b/target/linux/generic/backport-6.1/300-v6.2-powerpc-suppress-some-linker-warnings-in-recent-link.patch @@ -0,0 +1,63 @@ +From 579aee9fc594af94c242068c011b0233563d4bbf Mon Sep 17 00:00:00 2001 +From: Stephen Rothwell +Date: Mon, 10 Oct 2022 16:57:21 +1100 +Subject: [PATCH] powerpc: suppress some linker warnings in recent linker + versions + +This is a follow on from commit + + 0d362be5b142 ("Makefile: link with -z noexecstack --no-warn-rwx-segments") + +for arch/powerpc/boot to address wanrings like: + + ld: warning: opal-calls.o: missing .note.GNU-stack section implies executable stack + ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker + ld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissions + +This fixes issue https://github.com/linuxppc/issues/issues/417 + +Signed-off-by: Stephen Rothwell +Signed-off-by: Michael Ellerman +Link: https://lore.kernel.org/r/20221010165721.106267e6@canb.auug.org.au +--- + arch/powerpc/boot/wrapper | 15 ++++++++++++++- + 1 file changed, 14 insertions(+), 1 deletion(-) + +--- a/arch/powerpc/boot/wrapper ++++ b/arch/powerpc/boot/wrapper +@@ -215,6 +215,11 @@ ld_version() + }' + } + ++ld_is_lld() ++{ ++ ${CROSS}ld -V 2>&1 | grep -q LLD ++} ++ + # Do not include PT_INTERP segment when linking pie. Non-pie linking + # just ignores this option. + LD_VERSION=$(${CROSS}ld --version | ld_version) +@@ -223,6 +228,14 @@ if [ "$LD_VERSION" -ge "$LD_NO_DL_MIN_VE + nodl="--no-dynamic-linker" + fi + ++# suppress some warnings in recent ld versions ++nowarn="-z noexecstack" ++if ! ld_is_lld; then ++ if [ "$LD_VERSION" -ge "$(echo 2.39 | ld_version)" ]; then ++ nowarn="$nowarn --no-warn-rwx-segments" ++ fi ++fi ++ + platformo=$object/"$platform".o + lds=$object/zImage.lds + ext=strip +@@ -504,7 +517,7 @@ if [ "$platform" != "miboot" ]; then + text_start="-Ttext $link_address" + fi + #link everything +- ${CROSS}ld -m $format -T $lds $text_start $pie $nodl $rodynamic $notext -o "$ofile" $map \ ++ ${CROSS}ld -m $format -T $lds $text_start $pie $nodl $nowarn $rodynamic $notext -o "$ofile" $map \ + $platformo $tmp $object/wrapper.a + rm $tmp + fi