#37234
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Ran 18 Aug 2022 11:13AM UTC

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Files 382

Run time 1min

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Build # #37234

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local

Committed by

web-flow

Commit Message

[ASAN] Turn off asan instrumentation in segv handler (#46377)

There's some issues around asan and segv handlers. The issues
I'm aware of is:

1. If things run on the sigaltstack, we need to at some point unpoison
   the sigaltstack and it's not clear when to do that.
2. Sanitizers accidentally free stil-in-use stack frames:
   https://github.com/google/sanitizers/issues/1561
3. If noreturn functions run on the sigaltstack, asan can get confused
   about what it needs to unpoison

So for now, remove asan instrumentation from the segv_handler and
the the jl_call_in_ctx functions (jl_sig_throw is already annotated).
This helps the case I was seeing (where gc_srub would cause frequent
segv_handler invocations for safe restore), but there's probably a few
other landmines remaining here.

Run Details

78982 of 84741 relevant lines covered (93.2%)

32719021.51 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	#37234.1	18 Aug 2022 11:13AM UTC	0	93.2

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