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authorIan Lance Taylor <ian@gcc.gnu.org>2018-12-29 00:07:06 +0000
committerIan Lance Taylor <ian@gcc.gnu.org>2018-12-29 00:07:06 +0000
commite20bfbd18e64b8ab9428aa518b5d7b74a73461d9 (patch)
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parent50bec22834e0b147fca92bea80501bccc309ce4d (diff)
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runtime: prevent deadlock when profiling signal arrives in stack scan
Precise stack scan needs to unwind the stack. When it is unwinding the stack, if a profiling signal arrives, which also does a traceback, it may deadlock in dl_iterate_phdr. Prevent this deadlock by setting up runtime_in_callers before traceback. Reviewed-on: https://go-review.googlesource.com/c/155766 From-SVN: r267457
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