https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208093
Bug ID: 208093
Summary: install -d race
Product: Base System
Version: 10.3-BETA2
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: freebsd-bugs@FreeBSD.org
Reporter: m...@ucc.asn.au
install -d has a race condition between checking for existence and mkdir(). It
fails with "File exists". This can be encountered running "make -j" where the
same parent directory is created in multiple rules:
install -d /Users/travis/inst/sbin #these three run at once
install -d /Users/travis/inst/bin
install -d /Users/travis/inst/bin
install: mkdir /Users/travis/inst: File exists
Run two copies of the following to reproduce it. Note that the same problem
also exists for intermediate directories, though that's more difficult to
reproduce.
#!/bin/sh
while true; do
install -d /tmp/xx123/test
rm -d -f /tmp/xx123/test
done
output:
install: mkdir /tmp/xx123/test: File exists
install: mkdir /tmp/xx123/test: File exists
install: mkdir /tmp/xx123/test: File exists
...
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