FS#79920 - [yasm] Does not support note.gnu.property

Attached to Project: Arch Linux
Opened by loqs (loqs) - Wednesday, 11 October 2023, 20:43 GMT
Last edited by Buggy McBugFace (bugbot) - Saturday, 25 November 2023, 20:20 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Levente Polyak (anthraxx)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
yasm does not support note.gnu.property which is required for CET (shadow stack and indirect branch tracking) support [1]. Fixed upstream in [2] which applies cleanly.
Without this support even if projects add the required support in their assembly files the assembler will drop it.

Additional info:
* yasm 1.3.0-6
[1] https://github.com/yasm/yasm/pull/148
[2] https://github.com/yasm/yasm/commit/0799f381d513e18f404654047fa1b412084968c8

Steps to reproduce:
Build libjpeg-turbo with libjpeg-turbo-shstk.patch [3] applied. Note the readelf output:
readelf -n /usr/lib/libjpeg.so.8.3.2

Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
Properties: x86 feature: SHSTK

Replace nasm with yasm in makedepends and rebuild. Note the readelf output no longer contains .note.gnu.property.
Rebuild with the patched yasm and the .note.gnu.property is present.
   libjpeg-turbo-shstk.patch (0.5 KiB)
This task depends upon

Closed by  Buggy McBugFace (bugbot)
Saturday, 25 November 2023, 20:20 GMT
Reason for closing:  Moved
Additional comments about closing:  https://gitlab.archlinux.org/archlinux/p ackaging/packages/yasm/issues/1

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