Hi, sched_xetattr.test introduced by commit v4.16-10-gf31755f (tests: check decoding of sched_[gs]etattr corner cases) consistently fails on aarch64.
At the same time the test passes on all other architectures where strace is being tested regularly, both 64-bit (alpha, ia64, mips64, ppc64, s390x, sparc64, x86_64) and 32-bit (arm, hppa, mips, ppc, s390, sparc, x86). The test failure is visible on debian, fedora, and obs farms: http://www.einval.com/debian/strace/build-logs/arm64/2017-03-13-040306-log-asachi-TESTFAIL.txt https://kojipkgs.fedoraproject.org//work/tasks/5517/18365517/build.log https://build.opensuse.org/public/build/home:ldv_alt/openSUSE_Factory_ARM/aarch64/strace/_log The part of test that fails on aarch64 is this harmless syscall: sys_sched_getattr(F8ILL_KULONG_MASK, (unsigned long) attr, F8ILL_KULONG_MASK | sizeof(*attr), F8ILL_KULONG_MASK); I wouldn't be very much surprised if the test has hit some subtle kernel bug on aarch64. However, I'm not an aarch64 expert myself, nor do I have the appropriate aarch64 hardware to investigate, so this issue is not going to be solved without your help. -- ldv
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