[gpfsug-discuss] Errors in dmesg

[Christof Schmitt]

I see the same on a test system, and i think this is a false positive. When you check the code, there is a variable length arrary declared at the end of a struct with [0]. Apparently the UBSAN checker keys of the number, and the way to avoid the warning would be to change that to []. But this would be no functional change, just a syntax change to silence the checker.

Regards,

Christof Schmitt

On Tue, 2025-03-18 at 15:04 +0000, Jonathan Buzzard wrote:

Got my Ubuntu 24.04 server up and running and it "appears" to be
working. Thanks to everyone a Lenovo for helping me get access to the
download.

However I am see some troubling messages on the console like this

[Tue Mar 18 11:21:10 2025] UBSAN: array-index-out-of-bounds in
/usr/lpp/mmfs/src/gpl-linux/acl.c:314:45
[Tue Mar 18 11:21:10 2025] index 1 is out of range for type
'linux_posix_acl_entry [*]'

Where index might be any of 0, 1 or 2.

That to my eye doesn't look good. Is this expected or should I raise
this a support issue?


JAB.


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