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<div>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.</div>
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<div>Regards,</div>
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<div>Christof Schmitt</div>
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<div>On Tue, 2025-03-18 at 15:04 +0000, Jonathan Buzzard wrote:</div>
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<div>Got my Ubuntu 24.04 server up and running and it "appears" to be </div>
<div>working. Thanks to everyone a Lenovo for helping me get access to the</div>
<div>download.</div>
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<div>However I am see some troubling messages on the console like this</div>
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<div>[Tue Mar 18 11:21:10 2025] UBSAN: array-index-out-of-bounds in </div>
<div>/usr/lpp/mmfs/src/gpl-linux/acl.c:314:45</div>
<div>[Tue Mar 18 11:21:10 2025] index 1 is out of range for type </div>
<div>'linux_posix_acl_entry [*]'</div>
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<div>Where index might be any of 0, 1 or 2.</div>
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<div>That to my eye doesn't look good. Is this expected or should I raise </div>
<div>this a support issue?</div>
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<div>JAB.</div>
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