org-11.0.1/compiler-rt/lib/ubsan/ubsan_handlers.cpp#L151-L190
Signed-off-by: Nathan Chancellor
---
lib/ubsan.c | 28
lib/ubsan.h | 6 ++
2 files changed, 34 insertions(+)
diff --git a/lib/ubsan.c b/lib/ubsan.c
index 3e3352f3d0da..a1e6cc999
On Tue, Jan 12, 2021 at 01:15:42PM -0800, Nick Desaulniers wrote:
> On Tue, Jan 12, 2021 at 12:55 PM Nathan Chancellor
> wrote:
> >
> > When building ARCH=mips 32r2el_defconfig with CONFIG_UBSAN_ALIGNMENT:
> >
> > ld.lld: error: undefined symbol: __ubs
On Tue, Jan 12, 2021 at 11:20:27AM -0800, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:e609571b Merge tag 'nfs-for-5.11-2' of git://git.linux-nfs..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=15965a00d0
>
rnd Bergmann
I would like to see some movement on getting this fixed in 5.11. As it
stands, this is one of three __compiletime_assert references with
CONFIG_UBSAN_UNSIGNED_OVERFLOW. If we want to keep the BUILD_BUG()
around, I think this is fine. Alternatively, turning it into a runtime
check wou
ime so the check in field_multiplier stays in the final
object file, causing the above linkage failure. Always inline
gpi_update_reg so that this check can never fail.
Fixes: 5d0c3533a19f ("dmaengine: qcom: Add GPI dma driver")
Link: https://github.com/ClangBuiltLinux/linux/issues/1243
Sign
On Tue, Jan 12, 2021 at 06:48:48PM +, Mark Brown wrote:
> This is a random warning fix, why would you expect it to be sent as a
> bug fix? This is the first indication I've seen that anyone is seeing
> it in mainline, in general the people who report and fix warnings are
> doing so based on
On Wed, Dec 16, 2020 at 06:44:24PM +0800, Shengjiu Wang wrote:
> From: shengjiu wang
>
> When condition ((hdmi_out && hdmi_in) || (!hdmi_out && !hdmi_in))
> is true, then goto fail, the uninitialized variable ret will be
> returned.
>
> Signed-off-by: shengjiu wang
> Reported-by: kernel test
On Tue, Jan 12, 2021 at 05:10:04PM +0800, kernel test robot wrote:
> Hi Bill,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on linus/master]
> [also build test WARNING on v5.11-rc3]
> [cannot apply to powerpc/next s390/features tip/x86/core next-20210111]
>
was already merged for the normal (non-XIP)
> linker script, with a longer description.
>
> Fixes: c39866f268f8 ("arm/build: Always handle .ARM.exidx and .ARM.extab
> sections")
> Signed-off-by: Arnd Bergmann
Reviewed-by: Nathan Chancellor
> ---
> arch
ead_mos_reg() check the return status.
>
> So move the clearing of data to before the malloc.
>
> Fixes: 0d130367abf5 ("USB: serial: mos7720: fix control-message error
> handling")
> Signed-off-by: Tom Rix
Reviewed-by: Nathan Chancellor
> ---
> drivers/usb/ser
On Mon, Jan 11, 2021 at 12:18:21AM -0800, Bill Wendling wrote:
> From: Sami Tolvanen
>
> Enable the use of clang's Profile-Guided Optimization[1]. To generate a
> profile, the kernel is instrumented with PGO counters, a representative
> workload is run, and the raw profile data is collected from
On Tue, Jan 12, 2021 at 04:50:50AM +0900, Masahiro Yamada wrote:
> On Tue, Jan 12, 2021 at 4:34 AM Nathan Chancellor
> wrote:
> >
> > On Tue, Jan 12, 2021 at 04:19:01AM +0900, Masahiro Yamada wrote:
> > > On Tue, Jan 12, 2021 at 3:06 AM Nathan Chancellor
> > >
On Tue, Jan 12, 2021 at 04:19:01AM +0900, Masahiro Yamada wrote:
> On Tue, Jan 12, 2021 at 3:06 AM Nathan Chancellor
> wrote:
> >
> > After commit da5fb18225b4 ("bpf: Support pre-2.25-binutils objcopy for
> > vmlinux BTF"), having CONFIG_DEBUG_INFO_BTF en
On Mon, Jan 11, 2021 at 08:03:29PM +0100, Andrey Konovalov wrote:
> On Mon, Jan 11, 2021 at 7:59 PM Nathan Chancellor
> wrote:
> >
> > > > -config KASAN_STACK_ENABLE
> > > > +config KASAN_STACK
> > > > bool "Enable stack instrumentati
kernel.org/show_bug.cgi?id=210221
> >
> > Signed-off-by: Walter Wu
> > Suggested-by: Dmitry Vyukov
> > Cc: Andrey Ryabinin
> > Cc: Dmitry Vyukov
> > Cc: Andrey Konovalov
> > Cc: Alexander Potapenko
> > Cc: Andrew Morton
> > Cc: Nathan
On Mon, Jan 11, 2021 at 10:57:35AM +0100, Sedat Dilek wrote:
> On Mon, Jan 11, 2021 at 10:17 AM Bill Wendling wrote:
> >
> > On Mon, Jan 11, 2021 at 12:39 AM Sedat Dilek wrote:
> > >
> > > On Mon, Jan 11, 2021 at 9:18 AM 'Bill Wendling' via Clang Built Linux
> > > wrote:
> > > >
> > > > From:
s
standard for options that require a specific tools version.
Suggested-by: Sedat Dilek
Signed-off-by: Nathan Chancellor
---
MAINTAINERS | 1 +
init/Kconfig | 4
lib/Kconfig.debug | 6 ++
scripts/link-vmlinux.sh | 13 -
scripts/pahole-versi
On Mon, Jan 11, 2021 at 09:30:55PM +0900, Stafford Horne wrote:
> On Thu, Jan 07, 2021 at 04:04:47AM +0800, kernel test robot wrote:
> > Hi Pawel,
> >
> > FYI, the error/warning still remains.
> >
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> > master
> >
ut I did reproduce the hang that the commit mentions with
malta_kvm_guest_defconfig + CONFIG_RELOCATABLE=y +
CONFIG_RANDOMIZE_BASE=y and this patch does resolve it so:
Tested-by: Nathan Chancellor
> ---
> arch/mips/kernel/relocate.c | 10 --
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> dif
initialized but this makes sense to me. I am not sure the commit above
find_or_create_sess() is needed but again, personal preference.
Reviewed-by: Nathan Chancellor
> ---
> drivers/block/rnbd/rnbd-clt.c | 10 --
> 1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff
d.lld: warning: net/built-in.a(netfilter/utils.o): (.data.$__unnamed_5)
> is being placed in '.data.$__unnamed_5'
>
> [...]
>
> Also handle this by adding the related sections to generic definitions.
>
> Signed-off-by: Alexander Lobakin
Reviewed-by: Nathan Chancellor
> -
and declare it in vmlinux.lds.S closer
> to __init_end.
>
> [0] https://lore.kernel.org/linux-mips/20210109111259.ga4...@alpha.franken.de
>
> Reported-by: Thomas Bogendoerfer
> Signed-off-by: Alexander Lobakin
Reviewed-by: Nathan Chancellor
> ---
> arch/mips/kernel/vmlin
kin
> Reviewed-by: Kees Cook
Reviewed-by: Nathan Chancellor
> ---
> arch/mips/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index d68df1febd25..d3e64cc0932b 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mi
e this by adding the related sections to generic definitions
> as suggested by Sami [0].
>
> [0]
> https://lore.kernel.org/lkml/20201211184633.3213045-3-samitolva...@google.com
>
> Suggested-by: Kees Cook
> Signed-off-by: Alexander Lobakin
Reviewed-by: Nathan Chance
me way as .rel.dyn (like it's done for x86).
> Use the ARM/ARM64 path here and place it at the end of .text section.
>
> Reported-by: Nathan Chancellor
> Signed-off-by: Alexander Lobakin
Reviewed-by: Nathan Chancellor
> ---
> arch/mips/kernel/vmlinux.lds.S | 1 +
> 1 file
init/main.o' being placed in section `.rel.dyn'
>
> Adopted from x86/kernel/vmlinux.lds.S.
>
> Suggested-by: Fangrui Song
> Signed-off-by: Alexander Lobakin
Reviewed-by: Nathan Chancellor
> ---
> arch/mips/kernel/vmlinux.lds.S | 11 +++
> 1 file changed, 11
("MIPS: Add DWARF unwinding to assembly")
> Suggested-by: Kees Cook
> Signed-off-by: Alexander Lobakin
Reviewed-by: Nathan Chancellor
> ---
> arch/mips/include/asm/asm.h| 18 ++
> arch/mips/kernel/vmlinux.lds.S | 1 -
> 2 files changed, 18 insertions(+)
orphan section `.gnu.attributes'
> from `arch/mips/kernel/head.o' being placed in section
> `.gnu.attributes'
> mips-alpine-linux-musl-ld: warning: orphan section `.gnu.attributes'
> from `init/main.o' being placed in section `.gnu.attributes'
>
> Signed-off-by: Alexander Lobakin
5a4000 D __nosave_begin
> 805a4000 D __nosave_end
> 805a4000 d mips_vdso_data
> 805a8000 d vdso_data
> 805ac000 D mmlist_lock
> 805ac080 D tasklist_lock
>
> Fixes: ebb5e78cc634 ("MIPS: Initial implementation of a VDSO")
>
c: Andrey Ryabinin
> Cc: Dmitry Vyukov
> Cc: Andrey Konovalov
> Cc: Alexander Potapenko
> Cc: Andrew Morton
> Cc: Nathan Chancellor
Reviewed-by: Nathan Chancellor
> ---
>
> v2: make commit log to be more readable.
> v3: remain CONFIG_KASAN_STACK_ENABLE setting
tps://github.com/ClangBuiltLinux/linux/issues/256
> Signed-off-by: Arnd Bergmann
Reviewed-by: Nathan Chancellor
Tested-by: Nathan Chancellor
> ---
> arch/x86/platform/efi/efi_64.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/platform
On Thu, Jan 07, 2021 at 02:21:52PM +0800, Walter Wu wrote:
> CONFIG_KASAN_STACK and CONFIG_KASAN_STACK_ENABLE both enable KASAN
> stack instrumentation, but we should only need one config option,
> so that we remove CONFIG_KASAN_STACK_ENABLE. see [1].
>
> For gcc we could do no prompt and default
On Thu, Jan 07, 2021 at 09:22:00AM -0800, Kees Cook wrote:
> On Thu, Jan 07, 2021 at 05:09:59PM +0100, Arnd Bergmann wrote:
> > On Wed, Jan 6, 2021 at 11:12 PM Arnd Bergmann wrote:
> > >
> > > On Wed, Jan 6, 2021 at 10:57 PM Kees Cook wrote:
> > > > On Wed, Dec 30, 2020 at 04:47:35PM +0100, Arnd
On Wed, Jan 06, 2021 at 11:06:39PM +0100, Arnd Bergmann wrote:
> On Wed, Jan 6, 2021 at 10:38 PM Nathan Chancellor
> wrote:
> > On Wed, Jan 06, 2021 at 10:12:51AM +0100, Arnd Bergmann wrote:
> > > On Tue, Jan 5, 2021 at 10:25 AM Arnd Bergmann wrote:
> > > >
>
ernal-data to avoid "canonical PLT entry"/copy
> relocations https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98112
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/1210
> Reported-by: Arnd Bergmann
> Signed-off-by: Fangrui Song
I agree with Nick's comments about the commi
On Wed, Jan 06, 2021 at 10:12:51AM +0100, Arnd Bergmann wrote:
> On Tue, Jan 5, 2021 at 10:25 AM Arnd Bergmann wrote:
> >
> > On Mon, Jan 4, 2021 at 11:33 PM Nathan Chancellor
> > wrote:
> > > On Wed, Dec 30, 2020 at 05:13:03PM +0100, Marco Elver wrote:
> > &g
-alpine-linux-musl-ld: warning: orphan section `.rel.dyn'
> from `init/main.o' being placed in section `.rel.dyn'
>
> ld.lld: warning: :(.got) is being placed in '.got'
>
> Adopted from x86/kernel/vmlinux.lds.S.
>
> Reported-by: Nathan Chancellor # .got
> Suggested-by: Fangru
to the one done
> in dfs_cache_update_vol().
>
> Fixes: 54be1f6c1c37 ("cifs: Add DFS cache routines")
> Signed-off-by: Tom Rix
Reviewed-by: Nathan Chancellor
> ---
> fs/cifs/dfs_cache.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/fs/c
: fix Section
mismatch in reference") but it was missed. Remove the improper __init
annotation like that commit did.
Fixes: 078a55fc824c ("MIPS: Delete __cpuinit/__CPUINIT usage from MIPS code")
Link: https://github.com/ClangBuiltLinux/linux/issues/787
Signed-off-by: Nathan Chancellor
this type of comparison.
Link: https://github.com/ClangBuiltLinux/linux/issues/1232
Signed-off-by: Nathan Chancellor
---
arch/mips/bmips/setup.c | 2 +-
arch/mips/lantiq/prom.c | 2 +-
arch/mips/pic32/pic32mzda/init.c | 2 +-
arch/mips/ralink/of.c| 2 +-
4 files changed
pare the constant LTQ_EBU_PCC_ISTAT against 0 to fix the
warning. Additionally, remove the unnecessary parentheses as this is a
simple conditional statement and shorthand '== 0' to '!'.
Fixes: 3645da0276ae ("OF: MIPS: lantiq: implement irq_domain support")
Link: https://github.com/ClangBuil
On Mon, Jan 04, 2021 at 12:18:10PM +, Alexander Lobakin wrote:
> This series hunts the problems discovered after manual enabling of
> ARCH_WANT_LD_ORPHAN_WARN, notably the missing PAGE_ALIGNED_DATA()
> section affecting VDSO placement (marked for stable).
>
> Compile and runtime tested on
ctions like in the main linker script so
there is no more build failure.
Cc: sta...@vger.kernel.org
Fixes: 83a092cf95f2 ("powerpc: Link warning for orphan sections")
Link: https://github.com/ClangBuiltLinux/linux/issues/1218
Signed-off-by: Nathan Chancellor
---
arch/powerpc/kernel/vmlin
ctions like in the main linker script so
there is no more build failure.
[1]: https://reviews.llvm.org/D79600
[2]: https://reviews.llvm.org/D92493
Cc: sta...@vger.kernel.org
Fixes: 83a092cf95f2 ("powerpc: Link warning for orphan sections")
Link: https://github.com/ClangBuiltLinux/linux/iss
On Thu, Dec 31, 2020 at 09:28:52PM +, Dennis Zhou wrote:
> This is an unusual situation so I thought it best to explain it in a
> separate patch.
>
> "percpu: reduce the number of cpu distance comparisons" introduces a
> dependency on cpumask helper functions in __init code. This code
>
On Mon, Jan 04, 2021 at 09:55:20PM +0100, Sedat Dilek wrote:
> On Mon, Jan 4, 2021 at 9:49 PM Nathan Chancellor
> wrote:
> >
> > Commit eff8728fe698 ("vmlinux.lds.h: Add PGO and AutoFDO input
> > sections") added ".text.unlikely.*" and ".text.ho
t;>> dma/qcom/gpi.o:(gpi_update_reg) in archive
>>> drivers/built-in.a
>>> referenced by gpi.c
>>> dma/qcom/gpi.o:(gpi_update_reg) in archive
>>> drivers/built-in.a
[1]: https://lore.kernel.org/lkml/202012301
On Wed, Dec 30, 2020 at 04:40:40PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann
>
> clang cannt evaluate this function argument at compile time
> when the function is not inlined, which leads to a link
> time failure:
>
> ld.lld: error: undefined symbol: __compiletime_assert_414
> >>>
On Mon, Jan 04, 2021 at 03:33:33PM -0800, Andrew Morton wrote:
> On Mon, 4 Jan 2021 15:33:36 -0700 Nathan Chancellor
> wrote:
>
> > > > +++ b/lib/Kconfig.ubsan
> > > > @@ -122,6 +122,8 @@ config UBSAN_SIGNED_OVERFLOW
> > > >
> > > > con
abling summary collection.
>
> Fixes: 6171586a7ae5 ("[JFFS2] Correct handling of JFFS2_FEATURE_RWCOMPAT_COPY
> nodes.")
> Signed-off-by: Tom Rix
Reviewed-by: Nathan Chancellor
> ---
> fs/jffs2/summary.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --g
between GNU readelf and llvm-readelf/llvm-dwarfdump to
> validate the DWARF Version in the assembler feature detection script.
>
> Link: http://www.dwarfstd.org/doc/DWARF5.pdf
> Suggested-by: Arvind Sankar
> Suggested-by: Jakub Jelinek
> Suggested-by: Masahiro Yamada
>
g configs, and makes adding
> future versions more straightforward.
>
> Suggested-by: Fangrui Song
> Suggested-by: Masahiro Yamada
> Signed-off-by: Nick Desaulniers
Reviewed-by: Nathan Chancellor
> ---
> Makefile | 14 --
> lib/Kconfig.debug | 21 +++
On Sun, Jan 03, 2021 at 09:51:17AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
> head: 3516bd729358a2a9b090c1905bd2a3fa926e24c6
> commit: 0cd1ad2d7fd41e0de4969fd1dd0aa846c99830d1 iwlwifi: move all
> bus-independent TX
et;
>
> The driver returns -EINVAL for other broken DT properties, so do
> it the same way here.
>
> Fixes: 6a5f850aa83a ("ASoC: fsl: Add imx-hdmi machine driver")
> Signed-off-by: Arnd Bergmann
Reviewed-by: Nathan Chancellor
> ---
> sound/soc/fsl/imx-hdmi.
> Isn't it already upstream?
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=95393f3e07ab53855b91881692a4a5b52dcdc03c
This patch is fixing that one, the attribute was added between the
struct type, causing a new warning for clang.
I sent a fix for this earlier too, I do not care which one goes in as
long as one does so:
Reviewed-by: Nathan Chancellor
Cheers,
Nathan
On Tue, Dec 29, 2020 at 10:11:07PM +, Marc Zyngier wrote:
> On 2020-12-29 21:43, Nathan Chancellor wrote:
> > Commit fa8c3d65538a ("KVM: arm64: Keep nVHE EL2 vector installed")
> > inadvertently changed clang's inlining decisions around
> > hyp_cpu_pm_{init,exit}
Linux/linux/issues/1230
Signed-off-by: Nathan Chancellor
---
arch/arm64/kvm/arm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 6e637d2b4cfb..71a49eae9ea0 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -157
the txq variable in mt7915_mcu_send_message to be
more neutral like mt7615_mcu_send_message.
Fixes: e637763b606b ("mt76: move mcu queues to mt76_dev q_mcu array")
Link: https://github.com/ClangBuiltLinux/linux/issues/1229
Signed-off-by: Nathan Chancellor
---
drivers/net/wireless/mediatek/m
but only one is used within its
scope. Remove the unused one so there is no more warning.
Fixes: f3925032d7fd ("pinctrl: nomadik: Use irq_has_action()")
Signed-off-by: Nathan Chancellor
---
drivers/pinctrl/nomadik/pinctrl-nomadik.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drive
On Mon, Dec 28, 2020 at 01:43:30PM +0100, Greg Kroah-Hartman wrote:
> From: Vadim Pasternak
>
> [ Upstream commit 912b341585e302ee44fc5a2733f7bcf505e2c86f ]
>
> Remove PSU EEPROM configuration for systems class equipped with
> Mellanox chip Spectrum and ATOM CPU - system types MSN274x. Till now
g to assemble with GNU Assembler
> instead of its built-in LLVM assembler. This flag is set by default
> unless `LLVM_IAS=1' is set, because the LLVM assembler can't yet
> parse certain GNU extensions.
>
> Signed-off-by: John Millikin
Reviewed-by: Nathan Chancellor
> ---
On Fri, Dec 25, 2020 at 11:35:28PM -0800, h...@zytor.com wrote:
> On December 25, 2020 11:29:30 PM PST, John Millikin
> wrote:
> >When compiling with Clang, the `$(CLANG_FLAGS)' variable contains
> >additional flags needed to cross-compile C and Assembly sources:
I am not sure how or if others
: extraneous closing brace ('}')
}
^
3 errors generated.
The cleanup in ab8500_interrupts_show left a curly brace around, remove
it to fix the error.
Fixes: 886c8121659d ("mfd: ab8500-debugfs: Remove the racy fiddling with
irq_desc")
Signed-off-by: Nathan Chancellor
---
drivers/mfd/ab8500-deb
On Tue, Nov 17, 2020 at 12:50:31PM -0600, Tyrel Datwyler wrote:
> The vfcFrame correlation field is 64bit handle that is intended to trace
> I/O operations through both the client stack and VIOS stack when the
> underlying physical FC adapter supports tagging.
>
> Tag vfcFrames with the
github.com/ClangBuiltLinux/linux/issues/1221
Signed-off-by: Nathan Chancellor
---
drivers/i3c/master/mipi-i3c-hci/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c
b/drivers/i3c/master/mipi-i3c-hci/core.c
index 500abd27fb22..1b73647cc
unction
> 'percent_ext_fp' [-Wunused-function]
> static inline int32_t percent_ext_fp(int percent)
> ^
>
> Remove those obsolete functions.
>
> Signed-off-by: Lukas Bulwahn
Reviewed-by: Nathan Chancellor
> ---
> applies cleanly on current master and ne
On Thu, Nov 19, 2020 at 10:37:07AM -0800, Sean Christopherson wrote:
> From: Sean Christopherson
>
> Update my email address to one provided by my new benefactor.
>
> Cc: Thomas Gleixner
> Cc: Borislav Petkov
> Cc: Jarkko Sakkinen
> Cc: Dave Hansen
> Cc: Andy Lutomirski
> Cc: Vitaly
vmenter.S.
Fixes: 861377730aa9 ("KVM: SVM: Provide support for SEV-ES vCPU loading")
Link: https://reviews.llvm.org/D93524
Link: https://github.com/ClangBuiltLinux/linux/issues/1216
Signed-off-by: Nathan Chancellor
---
arch/x86/kvm/svm/sev.c | 2 +-
1 file changed, 1 insertion(+), 1 deleti
Reported-by: kernelci.org bot
> Reported-by: Quentin Perret
> Acked-by: Ard Biesheuvel
> Signed-off-by: Nick Desaulniers
Reviewed-by: Nathan Chancellor
> ---
> Changes V1 -> V2:
> * s/relocation types/program headers/
> * s/newer GNU binutils/GNU binutils 2.35+/
>
On Fri, Dec 11, 2020 at 07:54:07PM +, Maciej W. Rozycki wrote:
> On Fri, 11 Dec 2020, Anders Roxell wrote:
>
> > diff --git a/arch/mips/lib/uncached.c b/arch/mips/lib/uncached.c
> > index 09d5deea747f..f80a67c092b6 100644
> > --- a/arch/mips/lib/uncached.c
> > +++ b/arch/mips/lib/uncached.c
>
On Sun, Dec 06, 2020 at 12:09:31PM -0800, Sami Tolvanen wrote:
> Sure, looks good to me. However, I think we should also test for
> LLVM=1 to avoid possible further issues with mismatched toolchains
> instead of only checking for llvm-nm and llvm-ar.
It might still be worth testing for $(AR) and
On Fri, Dec 04, 2020 at 02:52:41PM -0800, Sami Tolvanen wrote:
> On Thu, Dec 3, 2020 at 2:32 PM Nick Desaulniers
> wrote:
> >
> > So I'd recommend to Sami to simply make the Kconfig also depend on
> > clang's integrated assembler (not just llvm-nm and llvm-ar).
>
> Sure, sounds good to me.
On Thu, Dec 03, 2020 at 09:07:30AM -0800, Sami Tolvanen wrote:
> On Thu, Dec 3, 2020 at 3:26 AM Will Deacon wrote:
> >
> > Hi Sami,
> >
> > On Tue, Dec 01, 2020 at 01:36:51PM -0800, Sami Tolvanen wrote:
> > > This patch series adds support for building the kernel with Clang's
> > > Link Time
code16gcc.h from a C header to
> an assembly header")
>
> Since commit 0bddd227f3dc ("Documentation: update for gcc 4.9
> requirement") the minimum supported version of GCC is gcc-4.9. It's now
> safe to remove this code.
>
> Signed-off-by: Nick Desaulniers
Reviewed-
a big churn. If arch
> maintainers want to clean them up, please go ahead.
>
> While I was here, I also moved __must_check to compiler_attributes.h
> from compiler_types.h
>
> Signed-off-by: Masahiro Yamada
> Acked-by: Jason A. Donenfeld
Acked-by: Nathan Chancellor
On Thu, Nov 26, 2020 at 07:39:33AM +0100, Greg Kroah-Hartman wrote:
> On Thu, Nov 26, 2020 at 10:14:43AM +0530, Naresh Kamboju wrote:
> > Linaro recently started building and testing with stable branches with
> > clang.
> > Stable 4.9 branch kernel built with clang 10 boot crashed on x86 and
> >
On Mon, Nov 23, 2020 at 03:36:32PM +0800, Antony Yu wrote:
> __do_div64 clobbers the input register r0 in little endian system.
> According to the inline assembly document, if an input operand is
> modified, it should be tied to a output operand. This patch can
> prevent compilers from reusing r0
_LTO_CLANG=y
# CONFIG_HID_WALTOP is not set
and I have taken that same kernel and booted it under QEMU with
'-enable-kvm' without any visible issues.
I have tested four combinations:
clang 12 @ f9f0a4046e11c2b4c130640f343e3b2b5db08c1:
* CONFIG_THINLTO=y
* CONFIG_THINLTO=n
clang 11.0.0
* CONFIG_THINLTO=y
* CONFIG_THINLTO=n
Tested-by: Nathan Chancellor
Cheers,
Nathan
On Fri, Nov 20, 2020 at 11:47:21AM -0800, Kees Cook wrote:
> On Fri, Nov 20, 2020 at 08:23:11AM -0800, Sami Tolvanen wrote:
> > Changing the ThinLTO config to a choice and moving it after the main
> > LTO config sounds like a good idea to me. I'll see if I can change
> > this in v8. Thanks!
>
>
/linux/issues/1187
Link: https://github.com/ClangBuiltLinux/linux/issues/1193
Reported-by: Arvind Sankar
Reported-by: kernelci.org bot
Reported-by: Mark Brown
Reviewed-by: Kees Cook
Signed-off-by: Nathan Chancellor
---
v1 -> v2:
* Add condition as a depends on line (Kees Cook)
* Capture out
Signed-off-by: Nathan Chancellor
---
v1 -> v2:
* Change
ifeq ($(CONFIG_LD_ORPHAN_WARN),y)
to
ifdef CONFIG_LD_ORPHAN_WARN
to improve readability (Michael Ellerman)
* Separate conditions for CONFIG_LD_ORPHAN warn to improve
readability (Kees Cook)
* Pick up tags from Kees, Mich
.
Fixes: 5e00fd90183a ("memory: tegra30-emc: Continue probing if timings are
missing in device-tree")
Link: https://github.com/ClangBuiltLinux/linux/issues/1203
Signed-off-by: Nathan Chancellor
---
drivers/memory/tegra/tegra30-emc.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
On Wed, Nov 18, 2020 at 03:24:04PM -0800, Nick Desaulniers wrote:
> On Wed, Nov 18, 2020 at 3:07 PM Ard Biesheuvel wrote:
> >
> > On Thu, 19 Nov 2020 at 00:05, Nick Desaulniers
> > wrote:
> > >
> > > > > > > > To avoid playing whack-a-mole with different architectures over
> > > > > > > >
On Tue, Nov 17, 2020 at 01:51:43PM -0800, Kees Cook wrote:
> On Fri, Nov 13, 2020 at 12:55:53PM -0700, Nathan Chancellor wrote:
> > config LD_ORPHAN_WARN
> > - def_bool ARCH_WANT_LD_ORPHAN_WARN && $(ld-option,--orphan-handling=warn)
> > + def_bool ARCH_WANT_LD_OR
On Tue, Nov 17, 2020 at 11:41:15AM -0800, Nick Desaulniers wrote:
> On Fri, Nov 13, 2020 at 11:56 AM Nathan Chancellor
> wrote:
> >
> > ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
> > along with a few others. Newer versions of ld.lld do not
On Tue, Nov 17, 2020 at 10:46:29AM -0800, Nick Desaulniers wrote:
> On Mon, Nov 16, 2020 at 7:04 PM John Hubbard wrote:
> >
> > Hi,
> >
> > I just ran into this and it's a real pain to figure out, because even
> > with the very latest Fedora 33 on my test machine, which provides clang
> > version
On Tue, Nov 17, 2020 at 10:03:29PM +1100, Michael Ellerman wrote:
> Nathan Chancellor writes:
> > Currently, '--orphan-handling=warn' is spread out across four different
> > architectures in their respective Makefiles, which makes it a little
> > unruly to deal
e then, make CC=clang W=1 warns:
>
> kernel/trace/ring_buffer.c:2763:1:
> warning: unused function 'rb_event_is_commit' [-Wunused-function]
>
> Remove this obsolete function.
>
> Signed-off-by: Lukas Bulwahn
> ---
Reviewed-by: Nathan Chancellor
or lib/.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/236
> Signed-off-by: Nick Desaulniers
Reviewed-by: Nathan Chancellor
Tested-by: Nathan Chancellor
> ---
> lib/asn1_decoder.c | 4 ++--
> lib/assoc_array.c | 2 +-
> lib/bootconfig.c
se cases.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/236
> Signed-off-by: Nick Desaulniers
Reviewed-by: Nathan Chancellor
Tested-by: Nathan Chancellor
> ---
> arch/powerpc/kernel/prom_init.c | 1 +
> arch/powerpc/kernel/uprobes.c | 1 +
> arch/powerpc/per
com/ClangBuiltLinux/linux/issues/236
> Signed-off-by: Nick Desaulniers
Reviewed-by: Nathan Chancellor
Tested-by: Nathan Chancellor
> ---
> We could just `#include "include/linux/compiler_types.h"` in the few .c
> sources used from lib/ (there are proper header guards in
> comp
e then, make CC=clang W=1 warns:
>
> mm/memcontrol.c:3421:20:
> warning: unused function 'memcg_has_children' [-Wunused-function]
>
> Simply remove this obsolete unused function.
>
> Signed-off-by: Lukas Bulwahn
Reviewed-by: Nathan Chancellor
gt; Hence, make W=1 warns:
>
> drivers/scsi/sd.c:3516:8:
> warning: variable 'devt' set but not used [-Wunused-but-set-variable]
>
> Simply remove this obsolete variable.
>
> Signed-off-by: Lukas Bulwahn
Reviewed-by: Nathan Chancellor
On Mon, Nov 16, 2020 at 05:41:58PM -0800, Nick Desaulniers wrote:
> On Fri, Nov 13, 2020 at 11:56 AM Nathan Chancellor
> wrote:
> >
> > Currently, '--orphan-handling=warn' is spread out across four different
> > architectures in their respective Makefiles, which make
On Mon, Nov 16, 2020 at 12:25:13AM +, Al Viro wrote:
> On Sun, Nov 15, 2020 at 04:51:49PM -0700, Nathan Chancellor wrote:
> > Looks good to me on top of d4d50710a8b46082224376ef119a4dbb75b25c56,
> > thanks for quickly looking into this!
> >
> > Tested-by:
On Sun, Nov 15, 2020 at 11:38:14PM +, Al Viro wrote:
> On Sun, Nov 15, 2020 at 02:41:25PM -0700, Nathan Chancellor wrote:
> > Hi Al,
> >
> > Apologies for the delay.
> >
> > On Sun, Nov 15, 2020 at 03:53:55PM +, Al Viro wrote:
> > > On Sat, Nov 1
On Sat, Nov 14, 2020 at 03:54:53AM +, Al Viro wrote:
> On Fri, Nov 13, 2020 at 08:01:24PM -0700, Nathan Chancellor wrote:
> > Sure thing, it does trigger.
> >
> > [0.235058] [ cut here ]
> > [0.235062] WARNING: CPU: 15 PI
On Sat, Nov 14, 2020 at 01:17:54AM +, Al Viro wrote:
> On Fri, Nov 13, 2020 at 04:54:53PM -0700, Nathan Chancellor wrote:
>
> > This patch in -next (6a9f696d1627bacc91d1cebcfb177f474484e8ba) breaks
> > WSL2's interoperability feature, where Windows paths automatically get
Hi Al,
On Wed, Nov 11, 2020 at 10:21:16PM +, Al Viro wrote:
> On Wed, Nov 11, 2020 at 09:52:20PM +, Al Viro wrote:
>
> > That can be done, but I would rather go with
> > n = copy_to_iter(m->buf + m->from, m->count, iter);
> > m->count -= n;
> > m->from
On Fri, Nov 13, 2020 at 11:42:03AM -0800, Nick Desaulniers wrote:
> + MPE, PPC
>
> On Fri, Nov 13, 2020 at 11:08 AM Nathan Chancellor
> wrote:
> >
> > On Fri, Nov 13, 2020 at 09:28:03AM -0800, Fāng-ruì Sòng wrote:
> > > On Thu, Nov 12, 2020 at 7:22 PM kernel test
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