Re: Recent-ish changes in binfmt_elf made my program segfault

Jan Bujak
2024-01-22T15:23:49Z

On 1/22/24 23:54, Pedro Falcato wrote:
> Hi!
>
> Where did you get that linker script?
>
> FWIW, I catched this possible issue in review, and this was already
> discussed (see my email and Eric's reply):
> https://lore.kernel.org/all/CAKbZUD3E2if8Sncy+M2YKncc_Zh08-86W6U5wR0ZMazShxbHHA@mail.gmail.com/
>
> This was my original testcase
> (https://github.com/heatd/elf-bug-questionmark), which convinced the
> loader to map .data over a cleared .bss. Your bug seems similar, but
> does the inverse: maps .bss over .data.
>

I wrote the linker script myself from scratch.

Thank you for the link to the previous discussion. So assuming this
breakage was intended my question here is - doesn't this run afoul
of the "we do not break userspace" rule?