From: Nathan Chancellor <nathan@kernel.org>
To: kernel test robot <lkp@intel.com>
Cc: Dmitry Baryshkov <lumag@kernel.org>,
llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Stephen Boyd <swboyd@chromium.org>
Subject: Re: [linux-next:master 3022/4739] drivers/gpu/drm/msm/msm.o: warning: objtool: msm_dp_ctrl_on_stream(): unexpected end of section .text.msm_dp_ctrl_on_stream
Date: Wed, 2 Jul 2025 14:44:59 -0700 [thread overview]
Message-ID: <20250702214459.GC2103156@ax162> (raw)
In-Reply-To: <20250702213716.GA2103156@ax162>
+ Dmitry's @kernel.org address, should these reports use .mailmap from
mainline to ensure they get sent to up to date addresses?
On Wed, Jul 02, 2025 at 02:37:16PM -0700, Nathan Chancellor wrote:
> On Wed, Jun 25, 2025 at 10:16:55AM +0800, kernel test robot wrote:
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > head: 2ae2aaafb21454f4781c30734959cf223ab486ef
> > commit: 8583a655f2c2bb442e2a2668680f419aa4c511d1 [3022/4739] drm/msm/dp: move/inline ctrl register functions
> > config: x86_64-buildonly-randconfig-005-20250625 (https://download.01.org/0day-ci/archive/20250625/202506251051.7rmus46j-lkp@intel.com/config)
> > compiler: clang version 20.1.7 (https://github.com/llvm/llvm-project 6146a88f60492b520a36f8f8f3231e15f3cc6082)
> > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250625/202506251051.7rmus46j-lkp@intel.com/reproduce)
> >
> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <lkp@intel.com>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/202506251051.7rmus46j-lkp@intel.com/
> >
> > All warnings (new ones prefixed by >>):
> >
> > >> drivers/gpu/drm/msm/msm.o: warning: objtool: msm_dp_ctrl_on_stream(): unexpected end of section .text.msm_dp_ctrl_on_stream
>
> This appears to be a case similar to [1] and [2], where clang has been
> able to figure out that there will be a divide by zero in the else
> branch of msm_dp_ctrl_config_msa(). Should pixel_div be adjusted to 1 or
> should the divide by zero be avoided by returning early? I believe Bill
> is still looking into trying to make this less distructive in LLVM but
> it should still probably be fixed for LLVM 20, which is already
> released.
>
> [1]: https://lore.kernel.org/CAHk-=wiq=E0fwJLFpCc3wPY_9BPZF3dbdqGgVoOmK9Ykj5JEeg@mail.gmail.com/
> [2]: https://lore.kernel.org/20250609213505.GA1634981@ax162/
>
> Cheers,
> Nathan
>
next prev parent reply other threads:[~2025-07-02 21:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-25 2:16 [linux-next:master 3022/4739] drivers/gpu/drm/msm/msm.o: warning: objtool: msm_dp_ctrl_on_stream(): unexpected end of section .text.msm_dp_ctrl_on_stream kernel test robot
2025-07-02 21:37 ` Nathan Chancellor
2025-07-02 21:44 ` Nathan Chancellor [this message]
2025-07-03 1:38 ` Philip Li
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