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Subject: [tip: objtool/core] sh/cpu: Make sure play_dead() doesn't return
Cc: Josh Poimboeuf <jpoimboe@kernel.org>, x86@kernel.org,
linux-kernel@vger.kernel.org
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[tip:,objtool/core] sh/cpu: Make sure play_dead() doesn't return
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Commit Message
tip-bot2 for Thomas Gleixner
March 10, 2023, 8:54 p.m. UTC
The following commit has been merged into the objtool/core branch of tip:
Commit-ID: 243971885418fcf772f18019eb3fabadcf0205d1
Gitweb: https://git.kernel.org/tip/243971885418fcf772f18019eb3fabadcf0205d1
Author: Josh Poimboeuf <jpoimboe@kernel.org>
AuthorDate: Mon, 13 Feb 2023 23:05:47 -08:00
Committer: Josh Poimboeuf <jpoimboe@kernel.org>
CommitterDate: Wed, 08 Mar 2023 08:44:24 -08:00
sh/cpu: Make sure play_dead() doesn't return
play_dead() doesn't return. Make that more explicit with a BUG().
BUG() is preferable to unreachable() because BUG() is a more explicit
failure mode and avoids undefined behavior like falling off the edge of
the function into whatever code happens to be next.
Link: https://lore.kernel.org/r/d0c3ff5349adfe8fd227acc236ae2c278a05eb4c.1676358308.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
arch/sh/include/asm/smp-ops.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/sh/include/asm/smp-ops.h b/arch/sh/include/asm/smp-ops.h index e277021..63866b1 100644 --- a/arch/sh/include/asm/smp-ops.h +++ b/arch/sh/include/asm/smp-ops.h @@ -27,6 +27,7 @@ static inline void plat_smp_setup(void) static inline void play_dead(void) { mp_ops->play_dead(); + BUG(); } extern void register_smp_ops(struct plat_smp_ops *ops);