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pidfd: block SIGCHLD during tmp process creation

Open rst0git opened this issue 4 months ago • 3 comments

This pull request updates pidfd to block SIGCHLD during temporary process creation to prevent a race condition between kill() and waitpid() where sigchld_handler() causes criu restore to fail with an error.

Fixes: #2490

rst0git avatar Oct 09 '24 09:10 rst0git