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Date: Fri, 15 Jul 2022 23:06:10 +0100
From: Sudip Mukherjee <sudipm.mukherjee@...il.com>
To: Nathan Chancellor <nathan@...nel.org>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
clang-built-linux <llvm@...ts.linux.dev>
Subject: Re: linux-next: Tree for Jul 14
On Thu, Jul 14, 2022 at 10:24 PM Nathan Chancellor <nathan@...nel.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
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