ASan stack trace not symbolized on Linux

[Thomas]

Hi,

I'm using ASan builds from https://commondatastorage.googleapis.com/chromium-browser-asan/index.html

and on Windows and Mac I get symbolized stack traces out of the box.

However, on Linux (tried Ubuntu 20 and Linux Mint) the stack traces are not symbolized.

In the docs, I only found info about setting build flags, however, I am not building chromium.

Running `chrome --no-sandbox --disable-setuid-sandbox` only shows "NaCl helper process running without a sandbox! Most likely you need to configure your SUID sandbox correctly"

Is there perhaps some package I need to install or configure something to make this work on Linux?

Thanks!

[Lei Zhang]

Do you have a copy of llvm-symbolizer on your system, or inside the
.zip from the ASAN download? If so, try setting
ASAN_OPTIONS="symbolize=1
external_symbolizer_path=/path/to/llvm-symbolizer" in the environment.

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[Daniel Cheng]

Try piping the output into asan_symbolize.py, e.g.:

chrome --no-sandbox --disable-setuid-sandbox |& tools/valgrind/asan/asan_symbolize.py

Daniel

--

[Thomas]

Setting the ASAN_OPTIONS env variable to the llvm-symbolizer in the zip did the trick. Thanks for the help!  

[Reid Kleckner]

Chromium embeds default ASan options that should find llvm-symbolizer in a normal Chromium source checkout:

https://source.chromium.org/chromium/chromium/src/+/main:build/sanitizers/sanitizer_options.cc;l=52?q=external_symbolizer_path&ss=chromium

If these Chrome build zip archives include llvm-symbolizer and place them at the same directory relative to the chrome executable, everything should work out of the box without the need to set ASAN_OPTIONS.

To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/chromium-dev/589a0742-81f0-46d3-9cbd-a055c9d03c32n%40chromium.org.