krytarowski added a comment.
In D70958#1767912 <https://reviews.llvm.org/D70958#1767912>, @eugenis wrote:
> Could this go into the common lit config in compiler-rt/test?
Do you mean to run this for all tests in compiler-rt? We intend to disable it
only when needed and prevent leaking regressions that violate ASLR to other
components of LLVM.
> What is the problem with ASLR in NetBSD? Is this about fixed shadow location
> conflicts with the binary & library mappings?
PaX ASLR on NetBSD is too aggressive with the layout randomization and we
cannot predict ranges of the heap and the stack. Next, we cannot map reliably
the memory used into shadow buffer that crashes in a cryptic way. We are fine
with disabling ASLR for the sanitizers that need shadow buffers and origins.
================
Comment at: compiler-rt/test/sanitizer_common/netbsd_commands/run_noaslr.sh:4
+PATH=${PATH}:/usr/sbin
+paxctl +a "${1}"
+exec "${@}"
----------------
I propose to use `/usr/bin/paxctl` as it will be PATH and environment
independent. We already use this direct path approach in pkgsrc.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D70958/new/
https://reviews.llvm.org/D70958
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