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From: "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>
To: Michael Ellerman <mpe@ellerman.id.au>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Kees Cook <keescook@chromium.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	linux-hardening@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: mainline build failure of powerpc allmodconfig for prom_init_check
Date: Thu, 14 Jul 2022 09:55:40 +0100	[thread overview]
Message-ID: <Ys/aDKZNhhsENH9S@debian> (raw)

Hi All,

Not sure if it has been reported before but the latest mainline kernel
branch fails to build for powerpc allmodconfig with gcc-12 and the error is:

Error: External symbol 'memset' referenced from prom_init.c
make[2]: *** [arch/powerpc/kernel/Makefile:204: arch/powerpc/kernel/prom_init_check] Error 1

The commit ca5dabcff1df ("powerpc/prom_init: Fix build failure with
GCC_PLUGIN_STRUCTLEAK_BYREF_ALL and KASAN") looks similar but the error
is still there with gcc-12.

Note: I don't see this error with gcc-11.


I will be happy to test any patch or provide any extra log if needed.

--
Regards
Sudip

WARNING: multiple messages have this Message-ID (diff)
From: "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>
To: Michael Ellerman <mpe@ellerman.id.au>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	linux-hardening@vger.kernel.org
Subject: mainline build failure of powerpc allmodconfig for prom_init_check
Date: Thu, 14 Jul 2022 09:55:40 +0100	[thread overview]
Message-ID: <Ys/aDKZNhhsENH9S@debian> (raw)

Hi All,

Not sure if it has been reported before but the latest mainline kernel
branch fails to build for powerpc allmodconfig with gcc-12 and the error is:

Error: External symbol 'memset' referenced from prom_init.c
make[2]: *** [arch/powerpc/kernel/Makefile:204: arch/powerpc/kernel/prom_init_check] Error 1

The commit ca5dabcff1df ("powerpc/prom_init: Fix build failure with
GCC_PLUGIN_STRUCTLEAK_BYREF_ALL and KASAN") looks similar but the error
is still there with gcc-12.

Note: I don't see this error with gcc-11.


I will be happy to test any patch or provide any extra log if needed.

--
Regards
Sudip

             reply	other threads:[~2022-07-14  8:55 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-14  8:55 Sudip Mukherjee (Codethink) [this message]
2022-07-14  8:55 ` mainline build failure of powerpc allmodconfig for prom_init_check Sudip Mukherjee (Codethink)
2022-07-17  9:12 ` Sudip Mukherjee
2022-07-17  9:12   ` Sudip Mukherjee
2022-07-17 14:44   ` Linus Torvalds
2022-07-17 14:44     ` Linus Torvalds
2022-07-17 19:54     ` Segher Boessenkool
2022-07-17 19:54       ` Segher Boessenkool
2022-07-18  3:52       ` Michael Ellerman
2022-07-18  3:52         ` Michael Ellerman
2022-07-18 14:56         ` Segher Boessenkool
2022-07-18 14:56           ` Segher Boessenkool
2022-07-17 20:25     ` Sudip Mukherjee
2022-07-17 20:25       ` Sudip Mukherjee
2022-07-17 20:29       ` Linus Torvalds
2022-07-17 20:29         ` Linus Torvalds
2022-07-17 20:38         ` Sudip Mukherjee
2022-07-17 20:38           ` Sudip Mukherjee
2022-07-17 20:56           ` Linus Torvalds
2022-07-17 20:56             ` Linus Torvalds
2022-07-17 20:56         ` Segher Boessenkool
2022-07-17 20:56           ` Segher Boessenkool
2022-07-17 21:11           ` Linus Torvalds
2022-07-17 21:11             ` Linus Torvalds
2022-07-17 21:45             ` Segher Boessenkool
2022-07-17 21:45               ` Segher Boessenkool
2022-07-18  1:38               ` Linus Torvalds
2022-07-18  1:38                 ` Linus Torvalds
2022-07-18  4:41   ` Michael Ellerman
2022-07-18  4:41     ` Michael Ellerman
2022-07-18  7:51     ` David Laight
2022-07-18  7:51       ` David Laight
2022-07-18 13:44     ` [PATCH] powerpc/64s: Disable stack variable initialisation for prom_init Michael Ellerman
2022-07-18 13:44       ` Michael Ellerman
2022-07-18 15:03       ` Sudip Mukherjee
2022-07-18 15:03         ` Sudip Mukherjee
2022-07-18 18:34       ` Linus Torvalds
2022-07-18 18:34         ` Linus Torvalds
2022-07-27 12:02       ` Michael Ellerman
2022-07-18 19:06     ` mainline build failure of powerpc allmodconfig for prom_init_check Linus Torvalds
2022-07-18 19:06       ` Linus Torvalds
2022-07-18 22:08       ` Segher Boessenkool
2022-07-18 22:08         ` Segher Boessenkool
2022-07-18 22:55         ` Linus Torvalds
2022-07-18 22:55           ` Linus Torvalds
2022-07-19 13:35       ` Michael Ellerman
2022-07-19 13:35         ` Michael Ellerman

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