Messages in this thread | | | Date | Tue, 27 Feb 2024 15:03:50 -0800 | From | Guenter Roeck <> | Subject | Re: [PATCH] lib: stackinit: Adjust target string to 8 bytes for m68k |
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On Tue, Feb 27, 2024 at 02:46:56PM -0800, Kees Cook wrote: > For reasons I cannot understand, m68k moves the start of the stack frame > for consecutive calls to the same function if the function's test > variable is larger than 8 bytes. This was only happening for the char > array test (obviously), so adjust the length of the string for m68k > only. I want the array size to be longer than "unsigned long" for every > given architecture, so the other remain unchanged. > > Additionally adjust the error message to be a bit more clear about > what's happened, and move the KUNIT check outside of the consecutive > calls to minimize what happens between them. > > Reported-by: Guenter Roeck <linux@roeck-us.net> > Closes: https://lore.kernel.org/lkml/a0d10d50-2720-4ecd-a2c6-c2c5e5aeee65@roeck-us.net/ > Signed-off-by: Kees Cook <keescook@chromium.org>
Hmm, guess I misunderstood the other e-mail.
Anyway, it works. After re-enabling the m68k tests:
Tested-by: Guenter Roeck <linux@roeck-us.net>
I'll also run it through qemu for other architectures to be sure that there is no negative impact.
Thanks, Guenter
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