pingcap / pingcap/tiflash

Asan failed due to BitXor.Nullable

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component/compute priority/P2 severity/minor type/bug
Dominant language
C++
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Description

[2023-10-22T19:00:10.731Z] [486/2371] TestFunctionBitXor.Nullable (151 ms)
[2023-10-22T19:00:10.731Z] libc++abi: terminating with uncaught exception of type std::__1::system_error: random_device failed to open /dev/urandom: Operation not permitted
[2023-10-22T19:00:10.731Z] [486/2371] TestFunctionBitXor.Nullable returned/aborted with exit code -6 (151 ms)

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the ASAN failure for TestFunctionBitXor.Nullable and reproduce the test in the reported environment. Investigate why std::random_device cannot open /dev/urandom with the stated permission error; done means the test completes successfully under ASAN.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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