Re: [PATCH] scripts/mksysmap: skip objtool __pfx_ symbols

[Nathan Chancellor <nathan@kernel.org>]

On Sat, Apr 12, 2025 at 10:22:18AM -0400, Steven Rostedt wrote:
> Even after removing that test, my allyesconfig still fails to build with:
> 
> ld.lld: error: kernel image bigger than KERNEL_IMAGE_SIZE
> ld.lld: error: kernel image bigger than KERNEL_IMAGE_SIZE
> ld.lld: error: kernel image bigger than KERNEL_IMAGE_SIZE
> 
> I guess I'll just have to remove allyesconfig from my test suite. I
> still do allmodconfig which appears to still work. At least that will
> shorten my test suite time as allyesconfig takes around a half hour to
> complete.

I noticed this from our CI too (I don't see the actual error there as
the build just times out before it can get there but I can see it
locally with all the same tools) and it seems like it is caused by
Linus's commit 6f110a5e4f99 ("Disable SLUB_TINY for build testing"),
which causes CONFIG_KASAN to be enabled for all{mod,yes}config again,
which contributes to blowing out the kernel size. I see this with both
GCC and Clang so I guess we will pursue the same solution and just stop
testing allyesconfig (unless we wanted to stop turning on KASAN for
all*config).

Cheers,
Nathan