daemon: fix panic on failed exec start#45792
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corhere merged 1 commit intomoby:masterfrom Jun 22, 2023
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If an exec fails to start in such a way that containerd publishes an exit event for it, daemon.ProcessEvent will race daemon.ContainerExecStart in handling the failure. This race has been a long-standing bug, which was mostly harmless until 4bafaa0. After that change, the daemon would dereference a nil pointer and crash if ProcessEvent won the race. Restore the status quo buggy behaviour by adding a check to skip the dereference if execConfig.Process is nil. Signed-off-by: Cory Snider <csnider@mirantis.com>
neersighted
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Jun 22, 2023
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If an exec fails to start in such a way that containerd publishes an exit event for it,
daemon.ProcessEventwill racedaemon.ContainerExecStartin handling the failure. This race has been a long-standing bug, which was mostly harmless until 4bafaa0. After that change, the daemon would dereference a nil pointer and crash ifProcessEventwon the race. Restore the status quo buggy behaviour by adding a check to skip the dereference ifexecConfig.Processis nil.- What I did
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