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Recent CI failures #15

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whentojump opened this issue Aug 24, 2024 · 0 comments
Open

Recent CI failures #15

whentojump opened this issue Aug 24, 2024 · 0 comments

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@whentojump
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In the past three days there have been hangs at QEMU booting stage when testing LLVM trunk and Linux v6.11-rc4 + patch v1.0.

Let me open this issue but wait a bit longer to see if the problem persists, as I briefly investigated and find evidence that LLVM is changing certain things back and forth (resulting CI PASS-FAIL-PASS-FAIL...).
whentojump added a commit to whentojump/linux-mcdc that referenced this issue Aug 27, 2024
@whentojump
ci: work around recent boot hangs with "LLVM trunk + kernel mainline"
495eb3b 
Let's track it in xlab-uiuc#15.
Before this is solved (or confirmed to be stability issues in LLVM
upstream), let's use a known working commit of LLVM (on 2024-08-21).

Also included are a few other measures for monitoring this issue:

* Prefix the boot step (QEMU script) with `timeout` to fail explicitly
  and sooner once there's a hang
* Try boot the kernel without any patch for comparison
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