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  1. MariaDB Server
  2. MDEV-23249

__builtin_readcyclecounter in include/my_rdtsc.h causes SIGILL on ARM

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 10.4.7, 10.4.8, 10.4.9, 10.4.10, 10.4.11, 10.4.12, 10.5.0, 10.5.1, 10.4.13, 10.5.4, 10.5.2, 10.5.3
    • Fix Version/s: 10.4.14, 10.5.5
    • Component/s: Server
    • Labels:
    • Environment:
      FreeBSD, aarch64

      Description

      The commit that handles MDEV-19845 makes a mention in the commit message about how it may lead to runtime failures on ARM systems. In trying to use both the 10.4 line and 10.5 line of MariaDB on a Raspberry Pi 3 running FreeBSD, which uses an ARM Cortex-A53 processor, I am running into just that runtime failure. As it says in the subject line, I get a SIGILL when MariaDB tries to call __builtin_readcyclecounter. The easiest fix for this would be to add a preprocessor condition to the check for the builtin's availability for it to not be used when __arm__ is defined. And example of this can be found here.

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              Assignee:
              marko Marko Mäkelä
              Reporter:
              CyberBotX Naram Qashat
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                Updated:
                Resolved: