Re: [PATCH 6.4 00/28] 6.4.1-rc1 review - hppa argument list too long

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On 7/2/23 16:30, Linus Torvalds wrote:
On Sun, 2 Jul 2023 at 15:45, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

Would you mind just verifying that yes, that commit on mainline is
broken for you, and the previous one works?

Also, while I looked at it again, and still didn't understand why
parisc would be different here, I *did* realize that because parisc
has a stack that grows up, the debug warning I added for GUP won't
trigger.

So if I got that execve() logic wrong for STACK_GROWSUP (which I
clearly must have), then exactly because it's grows-up, a GUP failure
wouldn't warn about not expanding the stack.

IOW, would you mind applying something like this on top of the current
kernel, and let me know if it warns?


I can reproduce the problem in qemu. However, I do not see a warning
after applying your patch.

Guenter




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