From: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
To: Mukesh Kumar Chaurasiya <mkchauras@linux.ibm.com>,
kernel test robot <lkp@intel.com>
Cc: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com,
oleg@redhat.com, kees@kernel.org, luto@amacapital.net,
wad@chromium.org, mchauras@linux.ibm.com, thuth@redhat.com,
sshegde@linux.ibm.com, charlie@rivosinc.com, macro@orcam.me.uk,
akpm@linux-foundation.org, ldv@strace.io, deller@gmx.de,
ankur.a.arora@oracle.com, segher@kernel.crashing.org,
tglx@linutronix.de, thomas.weissschuh@linutronix.de,
peterz@infradead.org, menglong8.dong@gmail.com,
bigeasy@linutronix.de, namcao@linutronix.de, mingo@kernel.org,
atrajeev@linux.vnet.ibm.com, mark.barnett@arm.com,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
oe-kbuild-all@lists.linux.dev
Subject: Re: [PATCH v2 8/8] powerpc: Enable Generic Entry/Exit for syscalls.
Date: Tue, 16 Dec 2025 23:57:14 +0100 [thread overview]
Message-ID: <0947502d-96e3-4179-ae48-603de74dc7b3@kernel.org> (raw)
In-Reply-To: <4ajwe2mjxijqffbmsf7drav53wxucd7wnrcn7uuvbacrmc22je@2c32xx4oopwn>
Le 16/12/2025 à 16:08, Mukesh Kumar Chaurasiya a écrit :
> On Tue, Dec 16, 2025 at 04:27:55AM +0800, kernel test robot wrote:
>> Hi Mukesh,
>>
>> kernel test robot noticed the following build errors:
>>
>> [auto build test ERROR on powerpc/next]
>> [also build test ERROR on powerpc/fixes linus/master v6.19-rc1 next-20251215]
>> [If your patch is applied to the wrong git tree, kindly drop us a note.
>> And when submitting patch, we suggest to use '--base' as documented in
>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit-scm.com%2Fdocs%2Fgit-format-patch%23_base_tree_information&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C181ba96509e54904228908de3cb4fa09%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639014945174972177%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=4sU795uiAIkzbbf9cdzEUNH6Cbax3kPS7biPFWiZir4%3D&reserved=0]
>>
>> url: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fintel-lab-lkp%2Flinux%2Fcommits%2FMukesh-Kumar-Chaurasiya%2Fpowerpc-rename-arch_irq_disabled_regs%2F20251214-210813&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C181ba96509e54904228908de3cb4fa09%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639014945174996572%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=BalspVN%2FJmi2pKv2QsOwMPsPOzLF%2FGAfSJ4Pq1jn%2BeM%3D&reserved=0
>> base: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Fpowerpc%2Flinux.git&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C181ba96509e54904228908de3cb4fa09%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639014945175289139%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=IExs1jOXw207ewNfCHIbLYmCeYTPGr65giviQ842JnA%3D&reserved=0 next
>> patch link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fr%2F20251214130245.43664-9-mkchauras%2540linux.ibm.com&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C181ba96509e54904228908de3cb4fa09%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639014945175311233%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=CJQevooFK2LY06NmPMpnyki3UfYOsIiFv1FThGk4CEI%3D&reserved=0
>> patch subject: [PATCH v2 8/8] powerpc: Enable Generic Entry/Exit for syscalls.
>> config: powerpc-randconfig-001-20251215 (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20251216%2F202512160453.iO9WNjrm-lkp%40intel.com%2Fconfig&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C181ba96509e54904228908de3cb4fa09%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639014945175328057%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=fM7XuG4aUtdsKuVZCjXZazYE%2FLU5uhqtXOTsiHQgEz0%3D&reserved=0)
>> compiler: powerpc-linux-gcc (GCC) 9.5.0
>> reproduce (this is a W=1 build): (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20251216%2F202512160453.iO9WNjrm-lkp%40intel.com%2Freproduce&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C181ba96509e54904228908de3cb4fa09%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639014945175343707%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=pnqJzh3vwyq8XCtopm%2ByJm0zUpz1Bk5JzVork9mZyec%3D&reserved=0)
>>
>> If you fix the issue in a separate patch/commit (i.e. not just a new version of
>> the same patch/commit), kindly add following tags
>> | Reported-by: kernel test robot <lkp@intel.com>
>> | Closes: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Foe-kbuild-all%2F202512160453.iO9WNjrm-lkp%40intel.com%2F&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C181ba96509e54904228908de3cb4fa09%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639014945175359094%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=5ToZM5JVO5d4NhuwFJjg78Xv%2F5nmxX8ZUhfmCNDo2hg%3D&reserved=0
>>
> I tried this with gcc 9.4 and gcc 14. I am not able to reproduce this.
> Will investigate further, meanwhile if anyone has any ideas that can help it would be great.
I was able to reproduce it with gcc 9.5
Seems to be related to commit 69d4c0d32186 ("entry, kasan, x86: Disallow
overriding mem*() functions")
Which is in contradiction with commit 26deb04342e3 ("powerpc: prepare
string/mem functions for KASAN")
Christophe
next prev parent reply other threads:[~2025-12-16 22:57 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-14 13:02 [PATCH v2 0/8] Generic IRQ entry/exit support for powerpc Mukesh Kumar Chaurasiya
2025-12-14 13:02 ` [PATCH v2 1/8] powerpc: rename arch_irq_disabled_regs Mukesh Kumar Chaurasiya
2025-12-14 13:02 ` [PATCH v2 2/8] powerpc: Prepare to build with generic entry/exit framework Mukesh Kumar Chaurasiya
2025-12-16 9:27 ` Christophe Leroy (CS GROUP)
2025-12-16 14:42 ` Mukesh Kumar Chaurasiya
2025-12-14 13:02 ` [PATCH v2 3/8] powerpc: introduce arch_enter_from_user_mode Mukesh Kumar Chaurasiya
2025-12-16 9:38 ` Christophe Leroy (CS GROUP)
2025-12-16 14:47 ` Mukesh Kumar Chaurasiya
2025-12-14 13:02 ` [PATCH v2 4/8] powerpc: Introduce syscall exit arch functions Mukesh Kumar Chaurasiya
2025-12-16 9:46 ` Christophe Leroy (CS GROUP)
2025-12-16 14:51 ` Mukesh Kumar Chaurasiya
2025-12-14 13:02 ` [PATCH v2 5/8] powerpc: add exit_flags field in pt_regs Mukesh Kumar Chaurasiya
2025-12-16 9:52 ` Christophe Leroy (CS GROUP)
2025-12-16 14:56 ` Mukesh Kumar Chaurasiya
2025-12-14 13:02 ` [PATCH v2 6/8] powerpc: Prepare for IRQ entry exit Mukesh Kumar Chaurasiya
2025-12-16 9:58 ` Christophe Leroy (CS GROUP)
2025-12-16 15:00 ` Mukesh Kumar Chaurasiya
2025-12-16 22:40 ` Christophe Leroy (CS GROUP)
2025-12-17 4:43 ` Mukesh Kumar Chaurasiya
2025-12-19 4:56 ` Mukesh Kumar Chaurasiya
2025-12-14 13:02 ` [PATCH v2 7/8] powerpc: Enable IRQ generic entry/exit path Mukesh Kumar Chaurasiya
2025-12-16 6:29 ` kernel test robot
2025-12-16 15:02 ` Mukesh Kumar Chaurasiya
2025-12-16 10:43 ` Christophe Leroy (CS GROUP)
2025-12-16 15:06 ` Mukesh Kumar Chaurasiya
2025-12-17 2:10 ` kernel test robot
2025-12-17 21:32 ` kernel test robot
2025-12-14 13:02 ` [PATCH v2 8/8] powerpc: Enable Generic Entry/Exit for syscalls Mukesh Kumar Chaurasiya
2025-12-14 16:20 ` Segher Boessenkool
2025-12-15 18:32 ` Mukesh Kumar Chaurasiya
2025-12-15 20:27 ` kernel test robot
2025-12-16 15:08 ` Mukesh Kumar Chaurasiya
2025-12-16 22:57 ` Christophe Leroy (CS GROUP) [this message]
2025-12-16 6:41 ` Christophe Leroy (CS GROUP)
2025-12-16 15:09 ` Mukesh Kumar Chaurasiya
2025-12-16 11:01 ` Christophe Leroy (CS GROUP)
2025-12-16 15:13 ` Mukesh Kumar Chaurasiya
2026-01-04 12:36 ` [PATCH v2 0/8] Generic IRQ entry/exit support for powerpc Samir M
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