#21026: Remove the abort handler in the backtrace generator
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Reporter: cypherpunks | Owner:
Type: defect | Status: new
Priority: Medium | Milestone: Tor: unspecified
Component: Core Tor/Tor | Version:
Severity: Normal | Keywords:
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
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The
[https://gitweb.torproject.org/tor.git/tree/src/test/test_bt_cl.c?id=51ee549a90e3e1b6c87f4ac588ac9fed51f0cc27#n79
abort handler] in the backtrace generator calls `exit(3)` which is not
asynchronous-signal-safe. Calling `exit(3)` in this context is undefined
behavior according to the C standard. See
https://www.securecoding.cert.org/confluence/x/34At for more information.
FWICT the handler is meant to force the backtrace generator to always have
an zero exit code. How the generator is currently used its exit code does
not matter so the handler can probably be removed.
Patch coming soon after some testing.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21026>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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