В Пт, 29/12/2017 в 17:10 -0700, Andy Lutomirski пишет: > > Also, you wouldn't happen to be using Gentoo perchance? I already > have two reports of a Gentoo system miscompiling the vDSO due to > Gentoo enabling -fstack-check and GCC generating stack check code > that is highly suboptimal, actively incorrect, and doesn't even > manage to check the stack in a particularly helpful way. > > If this is indeed what's going on, I'm going to try to come up with a > patch to outright fail the build on these buggy systems. We could > probably fudge the build options to avoid the problem, but Gentoo > really just needs fix its toolchain. You are right, It's due to fstack-check enabled in gentoo's gcc spec. "-fstack-check=no" in KBUILD_CFLAGS fixed this problem for me. =/