From: Naresh Kamboju <naresh.kamboju@linaro.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
John Stultz <jstultz@google.com>,
Stephen Boyd <sboyd@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Randy Dunlap <rdunlap@infradead.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Arnd Bergmann <arnd@arndb.de>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
linux-s390@vger.kernel.org
Subject: Re: [PATCH] bug: Fix no-return-statement warning with !CONFIG_BUG
Date: Wed, 10 Apr 2024 22:32:16 +0530 [thread overview]
Message-ID: <CA+G9fYsZcOv+tE09K20b7G=4s9D=HxAYwMV_zx0oWa1r2mqdrg@mail.gmail.com> (raw)
In-Reply-To: <20240410153212.127477-1-adrian.hunter@intel.com>
On Wed, 10 Apr 2024 at 21:02, Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> BUG() does not return, and arch implementations of BUG() use unreachable()
> or other non-returning code. However with !CONFIG_BUG, the default
> implementation is often used instead, and that does not do that. x86 always
> uses its own implementation, but powerpc with !CONFIG_BUG gives a build
> error:
>
> kernel/time/timekeeping.c: In function ‘timekeeping_debug_get_ns’:
> kernel/time/timekeeping.c:286:1: error: no return statement in function
> returning non-void [-Werror=return-type]
>
> Add unreachable() to default !CONFIG_BUG BUG() implementation.
>
> Fixes: e8e9d21a5df6 ("timekeeping: Refactor timekeeping helpers")
> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
> Closes: https://lore.kernel.org/all/CA+G9fYvjdZCW=7ZGxS6A_3bysjQ56YF7S-+PNLQ_8a4DKh1Bhg@mail.gmail.com/
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
This patch applied on top of today's Linux next-20240410 tag and
build test pass.
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
> ---
> include/asm-generic/bug.h | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
--
Linaro LKFT
https://lkft.linaro.org
WARNING: multiple messages have this Message-ID (diff)
From: Naresh Kamboju <naresh.kamboju@linaro.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
John Stultz <jstultz@google.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
linux-s390@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
x86@kernel.org, "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Nicholas Piggin <npiggin@gmail.com>,
Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Stephen Boyd <sboyd@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
linux-kernel@vger.kernel.org, Sven Schnelle <svens@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] bug: Fix no-return-statement warning with !CONFIG_BUG
Date: Wed, 10 Apr 2024 22:32:16 +0530 [thread overview]
Message-ID: <CA+G9fYsZcOv+tE09K20b7G=4s9D=HxAYwMV_zx0oWa1r2mqdrg@mail.gmail.com> (raw)
In-Reply-To: <20240410153212.127477-1-adrian.hunter@intel.com>
On Wed, 10 Apr 2024 at 21:02, Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> BUG() does not return, and arch implementations of BUG() use unreachable()
> or other non-returning code. However with !CONFIG_BUG, the default
> implementation is often used instead, and that does not do that. x86 always
> uses its own implementation, but powerpc with !CONFIG_BUG gives a build
> error:
>
> kernel/time/timekeeping.c: In function ‘timekeeping_debug_get_ns’:
> kernel/time/timekeeping.c:286:1: error: no return statement in function
> returning non-void [-Werror=return-type]
>
> Add unreachable() to default !CONFIG_BUG BUG() implementation.
>
> Fixes: e8e9d21a5df6 ("timekeeping: Refactor timekeeping helpers")
> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
> Closes: https://lore.kernel.org/all/CA+G9fYvjdZCW=7ZGxS6A_3bysjQ56YF7S-+PNLQ_8a4DKh1Bhg@mail.gmail.com/
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
This patch applied on top of today's Linux next-20240410 tag and
build test pass.
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
> ---
> include/asm-generic/bug.h | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
--
Linaro LKFT
https://lkft.linaro.org
next prev parent reply other threads:[~2024-04-10 17:02 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-10 15:32 [PATCH] bug: Fix no-return-statement warning with !CONFIG_BUG Adrian Hunter
2024-04-10 15:32 ` Adrian Hunter
2024-04-10 17:02 ` Naresh Kamboju [this message]
2024-04-10 17:02 ` Naresh Kamboju
2024-04-10 20:05 ` [tip: timers/urgent] " tip-bot2 for Adrian Hunter
2024-04-11 7:04 ` [PATCH] " Arnd Bergmann
2024-04-11 7:04 ` Arnd Bergmann
2024-04-11 7:16 ` Adrian Hunter
2024-04-11 7:16 ` Adrian Hunter
2024-04-11 7:56 ` Arnd Bergmann
2024-04-11 9:03 ` Adrian Hunter
2024-04-11 10:27 ` David Laight
2024-04-11 8:13 ` Christophe Leroy
2024-04-11 8:13 ` Christophe Leroy
2024-04-11 8:22 ` Christophe Leroy
2024-04-11 8:22 ` Christophe Leroy
2024-04-11 9:27 ` Adrian Hunter
2024-04-11 9:27 ` Adrian Hunter
2024-04-11 11:26 ` Arnd Bergmann
2024-04-11 11:26 ` Arnd Bergmann
2024-04-15 2:19 ` Michael Ellerman
2024-04-15 15:35 ` Arnd Bergmann
2024-04-15 15:35 ` Arnd Bergmann
2024-04-15 17:07 ` Christophe Leroy
2024-04-15 17:32 ` Arnd Bergmann
2024-04-15 17:32 ` Arnd Bergmann
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