Re: Various mount options have changed in Core Update 169

[Michael Tremer <michael.tremer@ipfire.org>]

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Hello,

> On 22 Jun 2022, at 19:02, Peter Müller <peter.mueller(a)ipfire.org> wrote:
> 
> Hello Michael,
> 
> thanks for your reply.
> 
>> Hello,
>> 
>> I suppose this is coming from changing dracut.
> 
> As discussed on the phone already, I don't think dracut is the root cause here, since
> the mount options are fine on systems running Core Update 168. Some change in Core Update
> 169 caused this issue.

Okay. Could we please find out what has been causing this?

This is a change I would definitely care about and things like this should not just change.

> 
>> Unless I am reading your diff wrong, those options have been added which is a good thing?!
> 
> No, it is the other way round. Silly me screwed up the diff. :-/
> 
> Anyway, commit 54bd60b67b477e5d5814293a74086dff1c21ac69 addresses all of them except for
> /dev. I searched and was unable to find any component where /dev is (re)mounted in the way
> it is shown in the output of "mount".
> 
> Do you have any ideas?
> 
> Thanks, and best regards,
> Peter Müller
> 
>> 
>> -Michael
>> 
>>> On 20 Jun 2022, at 21:34, Peter Müller <peter.mueller(a)ipfire.org> wrote:
>>> 
>>> Hello *,
>>> 
>>> while pre-testing Core Update 169, it came to my attention that, for some reason,
>>> various mount options have changed since Core Update 168, lacking options such as
>>> "nodev", "noexec", "nosuid", which means a security downgrade.
>>> 
>>> The complete delta is as follows:
>>> 
>>> $ diff -Naur before after
>>> --- before	2022-06-20 20:04:32.436632074 +0000
>>> +++ after	2022-06-20 20:04:34.500401575 +0000
>>> @@ -1,12 +1,12 @@
>>> -devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
>>> +devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
>>> /dev/sda1 on /boot type ext4 (rw,relatime)
>>> /dev/sda2 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)
>>> /dev/sda4 on / type ext4 (rw,relatime)
>>> -devtmpfs on /dev type devtmpfs (rw,relatime,size=1963708k,nr_inodes=490927,mode=755)
>>> +devtmpfs on /dev type devtmpfs (rw,nosuid,noexec,size=1949992k,nr_inodes=487498,mode=755)
>>> efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,relatime)
>>> none on /sys/fs/cgroup type cgroup2 (rw,relatime)
>>> -/proc on /proc type proc (rw,relatime)
>>> -/run on /run type tmpfs (rw,nosuid,nodev,relatime,size=8192k,mode=755)
>>> -/sys on /sys type sysfs (rw,relatime)
>>> -tmpfs on /dev/shm type tmpfs (rw,relatime)
>>> +proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
>>> +sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
>>> +tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,noexec)
>>> +tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,mode=755)
>>> /var/lock on /var/lock type tmpfs (rw,nosuid,nodev,relatime,size=8192k)
>>> 
>>> I cannot recall of having this explicitly changed anywhere, and don't understand
>>> the root cause for this (unwanted) change. Could somebody please point me into the
>>> right direction? :-)
>>> 
>>> Thanks in advance, and best regards,
>>> Peter Müller
>>