Bug#918764: udev: "udevadm control --reload-rules" kills all processes except init

[Axel Beckert]

Hi,

Axel Beckert wrote:
> I have no idea why this is happening, but several packages use "udevadm
> control --reload-rules" in their postinst (e.g. fuse) and if that's run,
> all process except init are instantly killed (reproducibly; the gettys
> seem to be respawned by init then, so I can login locally again)

This seems to be kernel-dependent:

> Kernel: Linux 4.19.0-1-amd64 (SMP w/8 CPU cores)

This was the 4.19.12 kernel, i.e. not the most recent package because
I couldn't update it before getting the system back in a usable state.

With linux-image-4.18.0-3-amd64 the issue is not present and both,
"udevadm control --reload-rules" as well as configuring fuse worked
again.

So I'm no more sure if this is an issue in udev or the Linux 4.19.
Haven't yet tried the current 4.19.13 or 4.20. Will do that within the
next few days.

		Regards, Axel
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