arm64/signal: Only read new data when parsing the SVE context

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When we parse the SVE signal context we read the entire context from
userspace, including the generic signal context header which was already
read by parse_user_sigframe() and padding bytes that we ignore. Avoid the
possibility of relying on the second read of the data read twice by only
reading the data which we are actually going to use.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221212-arm64-signal-cleanup-v3-5-4545c94b20ff@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Mark Brown 2023-01-31 22:20:43 +00:00 • committed by Catalin Marinas

parent b57682b315

commit f3ac48aa3a

1 changed files with 10 additions and 8 deletions

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arch/arm64/kernel/signal.c

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