[llvm-bugs] [Bug 33616] New: MCJIT does not propagate errors from mprotect

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Jun 27 14:37:33 PDT 2017


https://bugs.llvm.org/show_bug.cgi?id=33616

            Bug ID: 33616
           Summary: MCJIT does not propagate errors from mprotect
           Product: new-bugs
           Version: 3.8
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: tim.g.armstrong at gmail.com
                CC: llvm-bugs at lists.llvm.org

MCJIT::finalizeLoadedModules() ignores the return value (and error argument)
from MemMgr->finalizeMemory(), which appears to be the only way that an error
code from mprotect() is propagated. mprotect() can fail for various reasons and
it would be good if clients of MCJIT could detect the problem and fail
gracefully.

Bug #6701 mentions this problem as well.

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