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Will Drewry authored
On tracehook-friendly platforms, a system call number of -1 falls through without running much code or taking much action. ARM is different. This adds a lightweight check to arm_syscall() to make sure that ARM behaves the same way. Signed-off-by: Will Drewry <wad@chromium.org> TEST=building on tegra2 now. Will live test with seccomp testsuite. It was through SIGILL. BUG=chromium-os:27878 Change-Id: Ie3896b54e9bfa21c22e0df456a47ad03c8d0aa3f Reviewed-on: https://gerrit.chromium.org/gerrit/21251 Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Will Drewry <wad@chromium.org> Tested-by: Will Drewry <wad@chromium.org> Signed-off-by: Sasha Levitskiy <sanek@google.com>
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