Use mmap(2) MAP_STACK to allocate stacks on OpenBSD #59
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Since OpenBSD 6.4 (https://www.openbsd.org/64.html), the stack pointer must point to MAP_STACK memory, or the kernel may kill the process with a signal. All stack allocators must pass MAP_STACK to mmap(2). I took inspiration from boostorg/context@7e14ab9 for this diff.
|
1.77 is out. This is one of the very few patches we have in our tree that I'd like to get in. |
|
ty |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Since OpenBSD 6.4 (https://www.openbsd.org/64.html), the stack pointer
must point to MAP_STACK memory, or the kernel may kill the process
with a signal. All stack allocators must pass MAP_STACK to mmap(2).
I took inspiration from boostorg/context@7e14ab9 for this diff.