gossmap: fix OpenBSD crash. #7112
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This workflow has never had a particularly good signal-to-noise ratio, and disabling it saves us a couple of GH Actions cycles, with only minor reduction in test reach. We should rather rethink this and use the installation instructions to write Dockerfiles for each described architecture, and then have the CI test-build those Dockerfiles. That would also cover the docs during testing, rather than having yet another place where the instructions can bitrot away. Changelog-None No user-visible change.
Thanks to amazing debugging assistance from grubles, we figured out that indeed, my memory was correct: write and mmap are not consistent on all platforms. The easiest fix is to disable mmap on OpenBSD for now: the better fix is to do in-place updates using the mmap, and only rely on write() for append (which always causes a remap anyway before it's accessed). Fixes: ElementsProject#7109 Signed-off-by: Rusty Russell <[email protected]>
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Tested ACK e38fb0c |
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Thanks to amazing debugging assistance from grubles, we figured out that indeed, my memory was correct: write and mmap are not consistent on all platforms. The easiest fix is to disable mmap on OpenBSD for now: the better fix is to do in-place updates using the mmap, and only rely on write() for append (which always causes a remap anyway before it's accessed).
Fixes: #7109