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Posted to issues@mesos.apache.org by "Aaron Wood (JIRA)" <ji...@apache.org> on 2016/12/22 19:34:58 UTC

[jira] [Created] (MESOS-6835) Fix SIGBUS on ARM64/AArch64

Aaron Wood created MESOS-6835:
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             Summary: Fix SIGBUS on ARM64/AArch64
                 Key: MESOS-6835
                 URL: https://issues.apache.org/jira/browse/MESOS-6835
             Project: Mesos
          Issue Type: Bug
          Components: security, stout
            Reporter: Aaron Wood
            Assignee: Aaron Wood


Currently in the Linux launcher when the stack is allocated and prepared for a call to clone() it is not properly aligned. This is not an issue for x86 or x64 but for ARM64/AArch64 it is because of the requirement of having the stack aligned to a 16 byte boundary. While x86 and x64 also expect the stack to have a 16 byte aligned stack, it is not enforced.

Additionally, the way that the stack is currently allocated and passed to clone() accidentally chops off one entry, making a stack overflow using those missing 8 bytes a possibility. Fixing this while aligning the memory will fix both the issue of the stack overflow issue as well as the SIGBUS crash.



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