x86/entry, selftests: Further improve user entry sanity checks

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Chasing down a Xen bug caused me to realize that the new entry sanity
checks are still fairly weak.  Add some more checks.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/881de09e786ab93ce56ee4a2437ba2c308afe7a9.1593795633.git.luto@kernel.org

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Andy Lutomirski 2020-07-03 10:02:54 -07:00 • committed by Thomas Gleixner

parent db5b2c5a90

commit 3c73b81a91

2 changed files with 30 additions and 0 deletions

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19

arch/x86/entry/common.c

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11

tools/testing/selftests/x86/syscall_nt.c

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