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SubjectRe: Aarch64 EXT4FS inode checksum failures - seems to be weak memory ordering issues
Date
* Theodore Ts'o:

> On Thu, Jan 07, 2021 at 01:37:47PM +0000, Russell King - ARM Linux admin wrote:
>> > The gcc bugzilla mentions backports into gcc-linaro, but I do not see
>> > them in my git history.
>>
>> So, do we raise the minimum gcc version for the kernel as a whole to 5.1
>> or just for aarch64?
>
> Russell, Arnd, thanks so much for tracking down the root cause of the
> bug!
>
> I will note that RHEL 7 uses gcc 4.8. I personally don't have an
> objections to requiring developers using RHEL 7 to have to install a
> more modern gcc (since I use Debian Testing and gcc 10.2.1, myself,
> and gcc 5.1 is so five years ago :-), but I could imagine that being
> considered inconvenient for some.

Actually, RHEL 7 should have the fix (internal bug #1362635, curiously
we encountered it in the *XFS* CRC calculation code back then).

My understanding is that RHEL 7 aarch64 support ceased completely about
a month ago, so that shouldn't be an argument against bumping the
minimum version requirement to 5.1.

Thanks,
Florian
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