[BUG] Objtool warning from -next and mainline

[BUG] Objtool warning from -next and mainline

[Paul E. McKenney]

Hello!

I am getting this from mainline and -next:

drivers/gpu/drm/msm/msm.o: warning: objtool: submit_lock_objects+0x391: sibling call from callable instruction with modified stack frame

I don't see anything suspicious in that function, but then again,
I wouldn't know what to be suspicious of.  I see this on x86_64
with:

gcc version 11.4.0 (Ubuntu 11.4.0-1ubuntu1~22.04)

and:

gcc version 11.5.0 20240719 (Red Hat 11.5.0-9) (GCC)

I have uploaded the msm.o file [1], in case that helps.

Please let me know if there is additional information that I can provide.

							Thanx, Paul

[1] https://drive.google.com/file/d/1lfvPJRW7aqFaUHmWdafZJBkH6igb6AUV/view?usp=sharing

Re: [BUG] Objtool warning from -next and mainline

[Nathan Chancellor]

On Thu, Aug 14, 2025 at 01:14:51PM -0700, Paul E. McKenney wrote:
> Hello!
> 
> I am getting this from mainline and -next:
> 
> drivers/gpu/drm/msm/msm.o: warning: objtool: submit_lock_objects+0x391: sibling call from callable instruction with modified stack frame

It looks like Sasha sent a fix for this, does that resolve it for you as
well?

https://lore.kernel.org/20250807131058.1013858-1-sashal@kernel.org/

Cheers,
Nathan

Re: [BUG] Objtool warning from -next and mainline

[Paul E. McKenney]

On Thu, Aug 14, 2025 at 03:43:56PM -0700, Nathan Chancellor wrote:
> On Thu, Aug 14, 2025 at 01:14:51PM -0700, Paul E. McKenney wrote:
> > Hello!
> > 
> > I am getting this from mainline and -next:
> > 
> > drivers/gpu/drm/msm/msm.o: warning: objtool: submit_lock_objects+0x391: sibling call from callable instruction with modified stack frame
> 
> It looks like Sasha sent a fix for this, does that resolve it for you as
> well?
> 
> https://lore.kernel.org/20250807131058.1013858-1-sashal@kernel.org/

Indeed it does, thank you, and I gave it a Tested-by.

							Thanx, Paul