selftests/powerpc: Add a test of sigreturning to the kernel

Browse source

We have a general signal fuzzer, sigfuz, which can modify the MSR & NIP
before sigreturn. But the chance of it hitting a kernel address and also
clearing MSR_PR is fairly slim.

So add a specific test of sigreturn to a kernel address, both with and
without attempting to clear MSR_PR (which the kernel must block).

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211209115944.4062384-1-mpe@ellerman.id.au

...

This commit is contained in:

Michael Ellerman 2021-12-09 22:59:44 +11:00

parent 9cbbe6bae9

commit a8968521cf

3 changed files with 134 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

tools/testing/selftests/powerpc/signal/.gitignore vendored

View file

1

tools/testing/selftests/powerpc/signal/Makefile

View file

132

tools/testing/selftests/powerpc/signal/sigreturn_kernel.c

View file