[Bug 241905] SSP setup is not thread-safe ?

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241905

Kyle Evans <kevans at freebsd.org> changed:

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--- Comment #7 from Kyle Evans <kevans at freebsd.org> ---
Created attachment 209102
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=209102&action=edit
minimal reproducer-ish

Attaching a minimal producer- obviously your mileage may vary, compiled with "
cc -fstack-protector-all -O0 -static -pthread repro.c" for optimal effect, then
ran in a loop `for i in $(seq 1 100); do ./a.out; done` because I wasn't sure
how to tune it more effectively when I'm trying to get it to race against a
constructor in libc. Adding more runtime to the misnamed ssp_canary_killer
would also help reproduce, but that takes more energy.

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