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From: Alexander Lobakin <alobakin@pm.me>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Alexander Lobakin <alobakin@pm.me>,
	Nathan Chancellor <natechancellor@gmail.com>,
	Kees Cook <keescook@chromium.org>,
	Fangrui Song <maskray@google.com>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Alex Smith <alex.smith@imgtec.com>,
	Ralf Baechle <ralf@linux-mips.org>,
	Markos Chandras <markos.chandras@imgtec.com>,
	linux-mips@vger.kernel.org, stable@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v2 mips-next 0/4] MIPS: vmlinux.lds.S sections fix & cleanup
Date: Wed, 06 Jan 2021 20:07:24 +0000	[thread overview]
Message-ID: <20210106200713.31840-1-alobakin@pm.me> (raw)

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 MIPS32R2 CPS board with no issues.

Since v1 [0]:
 - catch .got entries too as LLD may produce it (Nathan);
 - check for unwanted sections to be zero-sized instead of
   discarding (Fangrui).

[0] https://lore.kernel.org/linux-mips/20210104121729.46981-1-alobakin@pm.me

Alexander Lobakin (4):
  MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section
  MIPS: vmlinux.lds.S: add ".gnu.attributes" to DISCARDS
  MIPS: vmlinux.lds.S: catch bad .got, .plt and .rel.dyn at link time
  MIPS: select ARCH_WANT_LD_ORPHAN_WARN

 arch/mips/Kconfig              |  1 +
 arch/mips/kernel/vmlinux.lds.S | 39 +++++++++++++++++++++++++++++++++-
 2 files changed, 39 insertions(+), 1 deletion(-)

-- 
2.30.0



             reply	other threads:[~2021-01-06 20:09 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-06 20:07 Alexander Lobakin [this message]
2021-01-06 20:08 ` [PATCH v2 mips-next 1/4] MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section Alexander Lobakin
2021-01-06 20:08   ` [PATCH v2 mips-next 2/4] MIPS: vmlinux.lds.S: add ".gnu.attributes" to DISCARDS Alexander Lobakin
2021-01-06 22:07     ` Kees Cook
2021-01-06 22:36       ` Alexander Lobakin
2021-01-06 23:26         ` Kees Cook
2021-01-07 11:59           ` Alexander Lobakin
2021-01-06 22:43       ` Fāng-ruì Sòng
2021-01-06 20:08   ` [PATCH v2 mips-next 3/4] MIPS: vmlinux.lds.S: catch bad .got, .plt and .rel.dyn at link time Alexander Lobakin
2021-01-06 20:21     ` Fāng-ruì Sòng
2021-01-06 20:23     ` Nathan Chancellor
2021-01-06 20:28     ` Alexander Lobakin
2021-01-06 20:08   ` [PATCH v2 mips-next 4/4] MIPS: select ARCH_WANT_LD_ORPHAN_WARN Alexander Lobakin
2021-01-06 22:07     ` Kees Cook
2021-01-06 22:07   ` [PATCH v2 mips-next 1/4] MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section Kees Cook

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