From: Denys Vlasenko
> Sent: 01 March 2022 22:40
>
> On Tue, Mar 1, 2022 at 11:15 PM David Laight <[email protected]> wrote:
> > From: Denys Vlasenko
> > > and a separate "spawn 40k 'sleep 0.03'" loop
> > > seems to indicate that openat(fd, ".") on the exited
> > > /proc/PID fails, and continues to fail
> > > even if another process with this PID exists
> > > again (pid was reused).
> >
> > Which kernel?
> > That may not fail on pre-pidfd kernels.
> > There were some discussions on the linux kernel mailing list
> > that I half followed.
>
> 4.12.0-0.rc3.git0.2.fc27.x86_64
Reasonably old then.
I could check on a 3.10 RHEL7 kernel.
But any busybox fix is likely to run on a newish kernel.
Not some old distro kernel.
David
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