signal/x86: Include the field offsets in the build time checks

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Due to an oversight when refactoring siginfo_t si_pkey has been in the
wrong position since 4.16-rc1.  Add an explicit check of the offset of
every user space field in siginfo_t and compat_siginfo_t to make a
mistake like this hard to make in the future.

I have run this code on 4.15 and 4.16-rc1 with the position of si_pkey
fixed and all of the fields show up in the same location.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

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Eric W. Biederman 2018-03-06 00:29:17 -06:00

parent 859d880cf5

commit f6a015498d

1 changed files with 65 additions and 0 deletions

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arch/x86/kernel/signal_compat.c

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