kernel update requires change to mount command?

[linx255]

Hi,

I updated my kernel from 4.4 to 4.15 and now suddenly mount command works differently.

I used to:
mount [disk dump image] /mountpoint

but now that same command produces an error:
failed to setup loop device: Operation not permitted

adding '-o loop,ro' fixes it, but I'm just wondering if there's a reason for this change and if there is a list of changes to bash or system commands with each kernel version.

Thanks

[deepakdeshp]

You must be aware that you can boot to 4.4 by choosing advanced options in grub and choosing 4.4. When upgrading the kernel in upgrade manager you get a tab indicating the new changes Incorporated.

[linx255]

Well I'm upgrading to 4.15 because 4.4 doesn't have the Spectre/Meltdown fix, so I won't be using 4.4 anymore. When I list kernels in Update Manager I don't see any tabs. When I click on 'changelog' link https://changelogs.ubuntu.com/changelog ... /changelog it says:

Code: Select all

Not Found  The requested URL /changelogs/pool/main/l/linux/linux_4.15.0-34.37~16.04.1/changelog was not found on this server.

And of course even if that loaded it would over tell me what had changed since the last version, not the 4.4 I was using.

Do kernel updates typically affect bash syntax? I always thought bash was contained in separate packages and not the kernel ( I can't seem to find them if they are ).

[Moem]

Well I'm upgrading to 4.15 because 4.4 doesn't have the Spectre/Meltdown fix, so I won't be using 4.4 anymore.

That's not correct; the more recent kernels in the 4.4 series do have that fix, starting at 4.4.0-108-generic. Source

[linx255]

Oh man I'm confused. I don't know how I got that mixed up. I'm pretty sure I read somewhere there was at least one vulnerability 4.4 didn't fix. Hm, I'll look into it.

UPDATE: Ok, so what it is, is, my 4.4.0-21 was not patched AFAIK ( other 4.4's per your link are ) but I switched to 4.15.0-34 because I'm going to be upgrading to Mint 19 and I figured I might as well use the 4.15 series which it apparently ships with.