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Mark Brown authored
We need to read the sizes of the signal context frames as part of parsing the overall signal context in parse_user_sigframe(). In the cases where we defer frame specific parsing to other functions those functions (other than the recently added TPIDR2 parser) reread the size and validate the version they read, opening the possibility that the value may change. Avoid this possibility by passing the size read in parse_user_sigframe() through user_ctxs and referring to that. For consistency we move the size check for the TPIDR2 context into the TPIDR2 parsing function. Note that for SVE, ZA and ZT contexts we still read the size again but after this change we no longer use the value, further changes will avoid the read. Signed-off-by:
Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221212-arm64-signal-cleanup-v3-4-4545c94b20ff@kernel.orgSigned-off-by:
Catalin Marinas <catalin.marinas@arm.com>
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