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SubjectRe: regression: Bug 215601 - gcc segv at startup on ia64


On February 21, 2022 11:49:20 AM PST, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote:
>Hi Kees!
>
>On 2/21/22 08:42, Kees Cook wrote:
>>>>> Reverting this commit resolves the issue up to and including git tip,
>>>>> with no (visible) issues.
>>>>>
>>>>> Hardware: HP Integrity rx2800 i2 Kernel config attached.
>>>>
>>>> Could somebody take a look into this? Or was this discussed somewhere
>>>> else already? Or even fixed?
>>>>
>>>> Anyway, to get this tracked:
>>>>
>>>> #regzbot introduced: 5f501d555653f8968011a1e65ebb121c8b43c144
>>>> #regzbot from: matoro <matoro_bugzilla_kernel@matoro.tk>
>>>> #regzbot title: gcc segv at startup on ia64
>>>> #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215601
>>
>> Does this fix it?
>>
>> https://www.ozlabs.org/~akpm/mmotm/broken-out/elf-fix-overflow-in-total-mapping-size-calculation.patch
>
>I have applied this patch on top of 038101e6b2cd5c55f888f85db42ea2ad3aecb4b6 and it doesn't
>fix the problem for me. Reverting 5f501d555653f8968011a1e65ebb121c8b43c144, however, fixes
>the problem.
>
>FWIW, this problem doesn't just affect GCC but systemd keeps segfaulting with this change as well.

Very weird! Can you attached either of those binaries to bugzilla (or a URL I can fetch it from)? I can try to figure out where it is going weird...

--
Kees Cook

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