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Sat, 26 Apr 2025 05:21:26 +0000 (GMT) Message-ID: <850ba4bc-a703-4e1e-b19f-ccf09b38b2cd@linux.ibm.com> Date: Sat, 26 Apr 2025 10:51:24 +0530 Precedence: bulk X-Mailing-List: linux-next@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linux-next-20250422] Build failure: Wvla-larger-than=0 is meaningless Content-Language: en-GB To: Stephen Rothwell , Kees Cook , nathan@kernel.org, hch@lst.de, Madhavan Srinivasan , LKML Cc: LKML , Linux Next Mailing List References: <7780883c-0ac8-4aaa-b850-469e33b50672@linux.ibm.com> From: Venkat Rao Bagalkote In-Reply-To: <7780883c-0ac8-4aaa-b850-469e33b50672@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNDI2MDAzMCBTYWx0ZWRfX7zop/KE38L6q /uDVqqe1atu5BhqiyJCxqCfU6kZkfGnh8JyookRnBrwvLDJcHEyzn72Em0OpOnNJGbzxTrghKGF sW9s6pR+5txTuDP9HJaqsXLwpBuRyUkqpvN+xjXC8OEyOGG5mkoLiPYYKTXKxhdnP/DWcgk2BbU rw1IRzh0hwOWVOpLCzQHNDPys7xrRdBhrkFEsIdqzpiJdWkgcdrqWOJy00HJCXiKNALn2Xh99Sg xF6XNibLd/oCrDekYBlYRli87IK9ekEAOqPrczV2PkSzAIt+dcyahV0qljk2mZd4zLJkAEW54kc oNtWybNzveWcaZypffvO+zoZZJD0Zw1ygsSH/iL+V12jU+CObg3mlkoyRPS9ml0TTXjor0VHFbM ikAVIC3lm0nRibEbWuu5QZww2Z9bmAvSHjy8FeJMILDIA9kJpaXA8ftByzbRtyWDxjyU+Z94 X-Authority-Analysis: v=2.4 cv=IMsCChvG c=1 sm=1 tr=0 ts=680c6d5b cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=XR8D0OoHHMoA:10 a=VwQbUJbxAAAA:8 a=e5mUnYsNAAAA:8 a=NEAV23lmAAAA:8 a=VnNF1IyMAAAA:8 a=iVOyuGI5PMKcQA6MX0cA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=Vxmtnl_E_bksehYqCbjh:22 X-Proofpoint-ORIG-GUID: VCcDIBeGdDpilvrL9HhoKNCBgfIQR8NM X-Proofpoint-GUID: VCcDIBeGdDpilvrL9HhoKNCBgfIQR8NM X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-04-26_01,2025-04-24_02,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 mlxlogscore=999 mlxscore=0 clxscore=1015 suspectscore=0 malwarescore=0 spamscore=0 phishscore=0 bulkscore=0 adultscore=0 priorityscore=1501 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2504260030 On 23/04/25 7:11 pm, Venkat Rao Bagalkote wrote: > Hello, > > > I am observing linux-next build failure on IBM Power8 server. > > > Repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > > Branch: master > > GCC: 8.5.0 20210514 > > ldd (GNU libc) 2.28 > > Attached is the .config file. > > > Build errors: > > > [[01m^[[Kcc1:^[[m^[[K ^[[01;36m^[[Knote: ^[[m^[[K-Wvla-larger-than=0 > is meaningless > ^[[01m^[[Kcc1:^[[m^[[K ^[[01;36m^[[Knote: ^[[m^[[K-Wvla-larger-than=0 > is meaningless > ^[[01m^[[Kcc1:^[[m^[[K ^[[01;36m^[[Knote: ^[[m^[[K-Wvla-larger-than=0 > is meaningless > ^[[01m^[[Kcc1:^[[m^[[K ^[[01;36m^[[Knote: ^[[m^[[K-Wvla-larger-than=0 > is meaningless > ^[[01m^[[Kcc1:^[[m^[[K ^[[01;36m^[[Knote: ^[[m^[[K-Wvla-larger-than=0 > is meaningless > make[1]: *** [/home/upstreamci/linux/Makefile:2011: .] Error 2 > make: *** [Makefile:248: __sub-make] Error 2 > I am seeing this failure on 6.15.0-rc3-next-20250424 kernel as well. Can someone please help in fixing this. Regards, Venkat. > > Git bisect is pointing to first bad commit as: > 4e5222bc2eef69252277f837880c876bf0ffee04 > > > Git Bisect log: > > > git bisect start > # status: waiting for both good and bad commits > # good: [9c32cda43eb78f78c73aee4aa344b777714e259b] Linux 6.15-rc3 > git bisect good 9c32cda43eb78f78c73aee4aa344b777714e259b > # status: waiting for bad commit, 1 good commit known > # bad: [2c9c612abeb38aab0e87d48496de6fd6daafb00b] Add linux-next > specific files for 20250422 > git bisect bad 2c9c612abeb38aab0e87d48496de6fd6daafb00b > # good: [d1da62193ce9715a3cd25a6007b32284aef3725e] Merge branch > 'drm-next' of https://gitlab.freedesktop.org/drm/kernel.git > git bisect good d1da62193ce9715a3cd25a6007b32284aef3725e > # good: [165991dc7afd1eec364a4b980cf6befdfca84404] next-20250414/tip > git bisect good 165991dc7afd1eec364a4b980cf6befdfca84404 > # good: [feaa817f7fbb1bb50f3c6b119098c5940c2e2532] Merge branch > 'togreg' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git > git bisect good feaa817f7fbb1bb50f3c6b119098c5940c2e2532 > # good: [b7d37856d1bddb8e79a7e27a8605dfbb82fe8e9a] Merge branch > 'for-next' of > git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git > git bisect good b7d37856d1bddb8e79a7e27a8605dfbb82fe8e9a > # good: [77fe94f0d068193c22ce8cfd7ee6317ab2f679c2] Merge branch > 'kunit' of > git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git > git bisect good 77fe94f0d068193c22ce8cfd7ee6317ab2f679c2 > # good: [627d1af4ec321f81d7ca76f541aef908d5a0e4bd] Merge branch > 'ntb-next' of https://github.com/jonmason/ntb.git > git bisect good 627d1af4ec321f81d7ca76f541aef908d5a0e4bd > # good: [f34fa2aef257678d9534cb3debbceaf453df02cc] Merge branch > 'pin-init-next' of https://github.com/Rust-for-Linux/linux.git > git bisect good f34fa2aef257678d9534cb3debbceaf453df02cc > # good: [9b7c1e4703dbff94ee0a545445f706518fccb73a] Merge branch > 'bitmap-for-next' of https://github.com/norov/linux.git > git bisect good 9b7c1e4703dbff94ee0a545445f706518fccb73a > # bad: [685b6cba6fcbdc4a3b1708ac70aef556f594907c] Merge branch > 'for-next/kspp' of > git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git > git bisect bad 685b6cba6fcbdc4a3b1708ac70aef556f594907c > # good: [431f4fcea79ffe17f396c10cf42d226494d2f489] kunit/usercopy: > Disable u64 test on 32-bit SPARC > git bisect good 431f4fcea79ffe17f396c10cf42d226494d2f489 > # good: [89860db3b0405ccf4419e76eff487544aab4e4d4] overflow: Clarify > expectations for getting DEFINE_FLEX variable sizes > git bisect good 89860db3b0405ccf4419e76eff487544aab4e4d4 > # bad: [c5b45570cac5302cb650531a35142eab8231853c] mod_devicetable: > Enlarge the maximum platform_device_id name length > git bisect bad c5b45570cac5302cb650531a35142eab8231853c > # bad: [4e5222bc2eef69252277f837880c876bf0ffee04] kbuild: Switch from > -Wvla to -Wvla-larger-than=0 > git bisect bad 4e5222bc2eef69252277f837880c876bf0ffee04 > # first bad commit: [4e5222bc2eef69252277f837880c876bf0ffee04] kbuild: > Switch from -Wvla to -Wvla-larger-than=0 > > > I tried reverting the bad commit, but build fails with something like > this. > > > Build Error after reverting the first bad commit > > kernel/watchdog.c: In function 'lockup_detector_reconfigure': > kernel/watchdog.c:936:2: error: too many arguments to function > '__lockup_detector_reconfigure' >   __lockup_detector_reconfigure(false); >   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > kernel/watchdog.c:926:13: note: declared here >  static void __lockup_detector_reconfigure(void) >              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > kernel/watchdog.c: In function 'lockup_detector_setup': > kernel/watchdog.c:940:2: error: too many arguments to function > '__lockup_detector_reconfigure' >   __lockup_detector_reconfigure(false); >   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > kernel/watchdog.c:926:13: note: declared here >  static void __lockup_detector_reconfigure(void) >              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > kernel/watchdog.c: In function 'proc_watchdog_update': > kernel/watchdog.c:962:2: error: too many arguments to function > '__lockup_detector_reconfigure' >   __lockup_detector_reconfigure(thresh_changed); >   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > kernel/watchdog.c:926:13: note: declared here >  static void __lockup_detector_reconfigure(void) >              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > kernel/watchdog.c: At top level: > cc1: warning: unrecognized command line option > '-Wno-unterminated-string-initialization' > make[3]: *** [scripts/Makefile.build:203: kernel/watchdog.o] Error 1 > make[3]: *** Waiting for unfinished jobs.... > make[2]: *** [scripts/Makefile.build:461: kernel] Error 2 > make[2]: *** Waiting for unfinished jobs.... > make[1]: *** [/root/linux-next/Makefile:2011: .] Error 2 > make: *** [Makefile:248: __sub-make] Error 2 > > > If you happen to fix this issue, please add below tag. > > > Reported-by: Venkat Rao Bagalkote > > > Regards, > > Venkat.