[compiler-rt] [msan] Re-exec with no ASLR if memory layout is incompatible on Linux (PR #85142)

[Arthur Eubanks via llvm-commits]

aeubanks wrote:

We're seeing similar issues with dfsan, e.g. https://ci.chromium.org/ui/p/chromium/builders/try/linux_upload_clang/5066/overview

```
 FAIL: DataFlowSanitizer-x86_64 :: lookup_table.c (22061 of 81767)
 ******************** TEST 'DataFlowSanitizer-x86_64 :: lookup_table.c' FAILED ********************
 Exit Code: 139
 
 Command Output (stderr):
 --
 RUN: at line 1: /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/./bin/clang  -fsanitize=dataflow   -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   /b/s/w/ir/cache/builder/src/third_party/llvm/compiler-rt/test/dfsan/lookup_table.c -mllvm -dfsan-combine-offset-labels-on-gep=false -mllvm -dfsan-combine-pointer-labels-on-load=false -mllvm -dfsan-combine-taint-lookup-table=remap_to_upper -DLOOKUP_TABLE -o /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/test/dfsan/X86_64Config/Output/lookup_table.c.tmp &&  /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/test/dfsan/X86_64Config/Output/lookup_table.c.tmp
 + /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/./bin/clang -fsanitize=dataflow -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta /b/s/w/ir/cache/builder/src/third_party/llvm/compiler-rt/test/dfsan/lookup_table.c -mllvm -dfsan-combine-offset-labels-on-gep=false -mllvm -dfsan-combine-pointer-labels-on-load=false -mllvm -dfsan-combine-taint-lookup-table=remap_to_upper -DLOOKUP_TABLE -o /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/test/dfsan/X86_64Config/Output/lookup_table.c.tmp
 + /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/test/dfsan/X86_64Config/Output/lookup_table.c.tmp
 FATAL: Code 0x618710e92e60 is out of application range. Non-PIE build?
 /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/test/dfsan/X86_64Config/Output/lookup_table.c.script: line 3: 850288 Segmentation fault      (core dumped) /b/s/w/ir/cache/builder/src/third_party/llvm-build/Release+Asserts/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/compiler-rt/test/dfsan/X86_64Config/Output/lookup_table.c.tmp
```


https://github.com/llvm/llvm-project/pull/85142