arm64: ptrace: Fix missing return in hw breakpoint code

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When delivering a hw-breakpoint SIGTRAP to a compat task via ptrace, the
lack of a 'return' statement means we fallthrough to the native case,
which differs in its handling of 'si_errno'.

Although this looks to be harmless because the subsequent signal is
effectively ignored, it's confusing and unintentional, so add the
missing 'return'.

Signed-off-by: Keno Fischer <keno@juliacomputing.com>
Link: https://lore.kernel.org/r/20210202002109.GA624440@juliacomputing.com
Signed-off-by: Will Deacon <will@kernel.org>

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Keno Fischer 2021-02-01 19:21:09 -05:00 • committed by Will Deacon

parent e30be1455b

commit 12fc428840

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arch/arm64/kernel/ptrace.c

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