seccomp: allow rseq syscall
Starting with v4.18, the Linux kernel provides the rseq
syscall which is a mechanism for fast userspace task
synchronization.
Starting with v2.35 glibc uses the new syscall, if it
exists, to gain some performance improvements, so we
need to update the policy files to allow it.
Even on older kernels where rseq is not supported,
glibc will still probe for its existence by expecting
an -ENOSYS response.
BUG=b:235960683
TEST=Local builds against glibc 2.35
Cq-Depend: chromium:3749266
Change-Id: I765e8ce7185827ad188c1f7800901cfc1a234799
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mosys/+/3757772
Reviewed-by: Allen Webb <allenwebb@google.com>
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Auto-Submit: Adrian Ratiu <adrian.ratiu@collabora.corp-partner.google.com>
Tested-by: Adrian Ratiu <adrian.ratiu@collabora.corp-partner.google.com>
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>
Owners-Override: Dominick Ng <dominickn@google.com>
3 files changed