➜

This issue tracker has been migrated to GitHub, and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

Author ggardet
Recipients ggardet
Date 2021-03-22.13:29:46
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1616419787.13.0.506382582675.issue43593@roundup.psfhosted.org>
In-reply-to
Content 
When Memory Tagging Extension (MTE) [0] is enabled on aarch64, python malloc make programs to crash. 
I noticed it while trying to use GDB with MTE enabled in user-space [1], and gdb crashed on start-up. Rebuilding python (3.8) using '--without-pymalloc' option allows to workaround the problem. 
For glibc, you need version 2.33 or later and build glibc with '--enable-memory-tagging' option. I guess that patches similar to glibc's patches are required for pymalloc.

[0]: https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/enhancing-memory-safety
[1]: https://en.opensuse.org/ARM_architecture_support#User-space_support
History
Date User Action Args
2021-03-22 13:29:47ggardetsetrecipients: + ggardet
2021-03-22 13:29:47ggardetsetmessageid: <1616419787.13.0.506382582675.issue43593@roundup.psfhosted.org>
2021-03-22 13:29:47ggardetlinkissue43593 messages
2021-03-22 13:29:46ggardetcreate