https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279226
Bug ID: 279226
Summary: sort(1) can deadlock with poorly timed signal
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: b...@freebsd.org
Reporter: kev...@freebsd.org
sort(1) has a semapahore to protect the tmp file list, and it catches numerous
signals to trigger tmp cleanup before bailing out. If we receive a signal
while tmp_files_sem is held, we can easily deadlock sort(1) as the signal
handler tries to take it again.
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