Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20220714185514.7d1a2ac9@canb.auug.org.au> <Ys/42uMzQy+CFTGI@debian>
 <YtA+127QgRifnRBZ@dev-arch.thelio-3990X> <CADVatmOTNA8uVqDEx6kp=+_O=wEhV2jbS9-frct-c4ZqBxcspg@mail.gmail.com>
 <YtBEXdrsthFamQs8@dev-arch.thelio-3990X> <CADVatmNOV+jn1WSFo=z4F9KqzYAgxCWr0cxTFL_5myJKFkQNzQ@mail.gmail.com>
 <YtCJeieW4Mz1VfRx@dev-arch.thelio-3990X>
In-Reply-To: <YtCJeieW4Mz1VfRx@dev-arch.thelio-3990X>
From:   Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date:   Fri, 15 Jul 2022 23:06:10 +0100
Message-ID: <CADVatmMMWc4YYzsuMSu8uH6fTbChU_RyK75eeQb+B3aT3kDGKg@mail.gmail.com>
Subject: Re: linux-next: Tree for Jul 14
To:     Nathan Chancellor <nathan@kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        clang-built-linux <llvm@lists.linux.dev>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Thu, Jul 14, 2022 at 10:24 PM Nathan Chancellor <nathan@kernel.org> wrote:
>
> Dropping the next list and Stephen as these issues are likely present on
> mainline as well.
>
> On Thu, Jul 14, 2022 at 07:26:27PM +0100, Sudip Mukherjee wrote:
> > Hi Nathan,
> >

<snip>

>
> It has not been as bad with CONFIG_KASAN_STACK force disabled for clang
> but it is still there for certain architectures, namely ARCH=arm. I
> would be curious to see if all those -Wframe-larger-than instances
> disappear with CONFIG_KASAN disabled.

Almost. This is from powerpc allmodconfig of next-20220715 with
CONFIG_KASAN disabled.

drivers/block/ublk_drv.c:890:6: error: variable 'io' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
        if (tag >= ubq->q_depth)
            ^~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:940:2: note: uninitialized use occurs here
        io->flags &= ~UBLK_IO_FLAG_ACTIVE;
        ^~
drivers/block/ublk_drv.c:890:2: note: remove the 'if' if its condition
is always false
        if (tag >= ubq->q_depth)
        ^~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:887:6: error: variable 'io' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
        if (ubq->ubq_daemon && ubq->ubq_daemon != current)
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:940:2: note: uninitialized use occurs here
        io->flags &= ~UBLK_IO_FLAG_ACTIVE;
        ^~
drivers/block/ublk_drv.c:887:2: note: remove the 'if' if its condition
is always false
        if (ubq->ubq_daemon && ubq->ubq_daemon != current)
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:884:6: error: variable 'io' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
        if (!ubq || ub_cmd->q_id != ubq->q_id)
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:940:2: note: uninitialized use occurs here
        io->flags &= ~UBLK_IO_FLAG_ACTIVE;
        ^~
drivers/block/ublk_drv.c:884:2: note: remove the 'if' if its condition
is always false
        if (!ubq || ub_cmd->q_id != ubq->q_id)
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:884:6: error: variable 'io' is used
uninitialized whenever '||' condition is true
[-Werror,-Wsometimes-uninitialized]
        if (!ubq || ub_cmd->q_id != ubq->q_id)
            ^~~~
drivers/block/ublk_drv.c:940:2: note: uninitialized use occurs here
        io->flags &= ~UBLK_IO_FLAG_ACTIVE;
        ^~
drivers/block/ublk_drv.c:884:6: note: remove the '||' if its condition
is always false
        if (!ubq || ub_cmd->q_id != ubq->q_id)
            ^~~~~~~
drivers/block/ublk_drv.c:880:6: error: variable 'io' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
        if (ub_cmd->q_id >= ub->dev_info.nr_hw_queues)
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:940:2: note: uninitialized use occurs here
        io->flags &= ~UBLK_IO_FLAG_ACTIVE;
        ^~
drivers/block/ublk_drv.c:880:2: note: remove the 'if' if its condition
is always false
        if (ub_cmd->q_id >= ub->dev_info.nr_hw_queues)
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:877:6: error: variable 'io' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
        if (!(issue_flags & IO_URING_F_SQE128))
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:940:2: note: uninitialized use occurs here
        io->flags &= ~UBLK_IO_FLAG_ACTIVE;
        ^~
drivers/block/ublk_drv.c:877:2: note: remove the 'if' if its condition
is always false
        if (!(issue_flags & IO_URING_F_SQE128))
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/block/ublk_drv.c:868:20: note: initialize the variable 'io' to
silence this warning
        struct ublk_io *io;
                          ^
                           = NULL
drivers/block/ublk_drv.c:1304:6: error: variable 'ret' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
        if (!ub)
            ^~~
drivers/block/ublk_drv.c:1330:9: note: uninitialized use occurs here
        return ret;
               ^~~
drivers/block/ublk_drv.c:1304:2: note: remove the 'if' if its
condition is always false
        if (!ub)
        ^~~~~~~~
drivers/block/ublk_drv.c:1301:9: note: initialize the variable 'ret'
to silence this warning
        int ret;
               ^
                = 0
7 errors generated.
_________________________________________________________________________________________________________________


drivers/clk/qcom/gpucc-sm8350.c:111:2: error: initializer element is
not a compile-time constant
        gpu_cc_parent,
        ^~~~~~~~~~~~~
drivers/clk/qcom/gpucc-sm8350.c:126:2: error: initializer element is
not a compile-time constant
        gpu_cc_parent,
        ^~~~~~~~~~~~~
2 errors generated.
_________________________________________________________________________________________________________________

drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c:1093:12: error: stack frame size
(2112) exceeds limit (2048) in 'vcn_v3_0_start'
[-Werror,-Wframe-larger-than]
static int vcn_v3_0_start(struct amdgpu_device *adev)
           ^
1 error generated.
_________________________________________________________________________________________________________________


-- 
Regards
Sudip