| Summary: | sys-devel/{llvm,clang}: clang runtime executable stack (WX sections) QA Notice | ||
|---|---|---|---|
| Product: | Gentoo Linux | Reporter: | Rafał Mużyło <galtgendo> |
| Component: | [OLD] Development | Assignee: | Gentoo Clang Team (OBSOLETE) <clang+obsolete> |
| Status: | RESOLVED FIXED | ||
| Severity: | minor | CC: | AlphatPC, atoth, isidansick, marbacz |
| Priority: | Normal | ||
| Version: | unspecified | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Package list: | Runtime testing required: | --- | |
| Attachments: | Proposed patch to sed the .S files to add GNU-stack stuff | ||
|
Description
Rafał Mużyło
2012-06-17 08:06:49 UTC
So, there's bug 455262 and now bug 515542 - different only in version, so I'm not marking those as duplicates even if they effectively are. Also, as I noted in a different bug affects both x86 and amd64, especially with abi_x86_32. Indeed, thanks for tracking them! Looks like 3.4.2 is "less worse" with floatundi?f.o parts, but still not there. *** Bug 455262 has been marked as a duplicate of this bug. *** *** Bug 515542 has been marked as a duplicate of this bug. *** Same problem with sys-devel/llvm-3.7.0_rc3 * QA Notice: The following files contain writable and executable sections * Files with such sections will not work properly (or at all!) on some * architectures/operating systems. A bug should be filed at * http://bugs.gentoo.org/ to make sure the issue is fixed. * For more information, see: * * https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart * * Please include the following list of files in your report: * Note: Bugs should be filed for the respective maintainers * of the package in question and not hardened@g.o. * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-x86_64.a:floatundidf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-x86_64.a:floatundisf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-x86_64.a:floatundixf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:ashldi3.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:ashrdi3.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:divdi3.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:floatdidf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:floatdisf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:floatdixf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:floatundidf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:floatundisf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:floatundixf.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:lshrdi3.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:moddi3.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:muldi3.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:udivdi3.S.o * !WX --- --- usr/lib/clang/3.7.0/lib/linux/libclang_rt.builtins-i386.a:umoddi3.S.o Created attachment 410586 [details, diff] Proposed patch to sed the .S files to add GNU-stack stuff The find command adds the GNU-stack stuff to the .S files as described here: https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart#Patching (In reply to Mark Wright from comment #6) > The find command adds the GNU-stack stuff to the .S files as described here: > https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart#Patching Well, all this time the real question was if the maintainer knows any reason that this could break anything in clang. (In reply to Rafał Mużyło from comment #7) > (In reply to Mark Wright from comment #6) > > The find command adds the GNU-stack stuff to the .S files as described here: > > https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart#Patching > > Well, all this time the real question was if the maintainer knows any reason > that this could break anything in clang. Introducing WX sections in an executable is simply a bad practice, regardless of any symptoms it might cause. If llvm/clang would not obey this principle, it couldn't be an alternative for those who care. I know that my opinion doesn't really matter - but I am one of those. (In reply to Mark Wright from comment #6) > Created attachment 410586 [details, diff] [details, diff] > Proposed patch to sed the .S files to add GNU-stack stuff > > The find command adds the GNU-stack stuff to the .S files as described here: > https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart#Patching Works for me, thanks. No reason that this should break compiler-rt, and tests are still ok, so this is in 3.7.0 ebuild now, thanks gienah! |
