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

[Michael Biebl]

Control: tags -1 moreinfo unreproducible

Am 09.01.19 um 11:16 schrieb 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.
> 

I can't reproduce this problem.
Neither with a 4.18 (4.18.20-2), 4.19 (4.19.12-1) or 4.20 (4.20-1~exp1)
kernel. Tested both with systemd as PID 1 and inside a VM with sysvinit
as PID 1.





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