riscv: reject invalid syscalls below -1
Running "stress-ng --enosys 4 -t 20 -v" showed a large number of kernel oops with "Unable to handle kernel paging request at virtual address" message. This happens when enosys stressor starts testing random non-valid syscalls. I forgot to redirect any syscall below -1 to sys_ni_syscall. With the patch kernel oops messages are gone while running stress-ng enosys stressor. Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com> Fixes: 5340627e ("riscv: add support for SECCOMP and SECCOMP_FILTER") Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
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