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From: Peter Zijlstra <peterz@infradead.org>
To: x86@kernel.org, jpoimboe@redhat.com
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, mbenes@suse.cz
Subject: [PATCH 0/2] objtool: Fix code reloc vs weak symbols
Date: Tue, 19 Apr 2022 22:32:54 +0200	[thread overview]
Message-ID: <20220419203254.034493341@infradead.org> (raw)

Two fun bugs that make can cause other fun fail if you have a fresh enough
toolchain that strips unused section symbols.

The symptoms can vary between a faulty unwind to a kernel splat for trying to
patch the wrong text.

I found it while playing with text patching and Josh confirmed it very much
affects ORC data too.


             reply	other threads:[~2022-04-19 20:41 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-19 20:32 Peter Zijlstra [this message]
2022-04-19 20:32 ` [PATCH 1/2] objtool: Fix type of reloc::addend Peter Zijlstra
2022-04-22 10:27   ` [tip: objtool/urgent] " tip-bot2 for Peter Zijlstra
2022-04-19 20:32 ` [PATCH 2/2] objtool: Fix code relocs vs weak symbols Peter Zijlstra
2022-04-20  2:16   ` Josh Poimboeuf
2022-04-20  6:57     ` Peter Zijlstra
2022-04-22 10:27   ` [tip: objtool/urgent] " tip-bot2 for Peter Zijlstra
2022-04-21 15:48 ` [PATCH 0/2] objtool: Fix code reloc " Josh Poimboeuf

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