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(parent: dc2ad16) | patch
selftests/seccomp: Avoid redundant register flushes
authorKees Cook <keescook@chromium.org>
Sat, 12 Sep 2020 11:08:15 +0000 (04:08 -0700)
committerKees Cook <keescook@chromium.org>
Sat, 19 Sep 2020 07:59:59 +0000 (00:59 -0700)
commite4e8e5d28d5e1dac24f775452d4cc6f49f5c069e
treed91403bc2a6da23a342525ed0b7af96198af8fcctree | snapshot
parentdc2ad165f4fbef0fe1028b6b3720c5bec034874fcommit | diff
selftests/seccomp: Avoid redundant register flushes

When none of the registers have changed, don't flush them back. This can
happen if the architecture uses a non-register way to change the syscall
(e.g. arm64) , and a return value hasn't been written.

Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/lkml/20200912110820.597135-11-keescook@chromium.org
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
tools/testing/selftests/seccomp/seccomp_bpf.c diff | blob | history
Domain: System / Kernel;