On Mon, Jun 13, 2016 at 2:11 PM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > On Tue, 14 Jun 2016 03:37:57 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux mm-vmscan-node-lru-v7r3 >> head: 276a5614a25ce20248f42bd4fb025b80ae0c9be1 >> commit: 44c61fe5d7f13025a2a1f6efbbc0da75ad93ee19 [38/200] mm: SLUB freelist randomization >> config: x86_64-randconfig-x018-06140033 (attached as .config) >> compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430 >> reproduce: >> git checkout 44c61fe5d7f13025a2a1f6efbbc0da75ad93ee19 >> # save the attached .config to linux build tree >> make ARCH=x86_64 >> >> All errors (new ones prefixed by >>): >> >> mm/built-in.o: In function `init_cache_random_seq': >> >> slub.c:(.text+0x507dc): undefined reference to `cache_random_seq_create' >> mm/built-in.o: In function `__kmem_cache_release': >> >> (.text+0x53979): undefined reference to `cache_random_seq_destroy' With that config, I get these errors. > I don't even get that far with that .config. With gcc-4.4.4 I get > > init/built-in.o: In function `initcall_blacklisted': > main.c:(.text+0x41): undefined reference to `__stack_chk_guard' > main.c:(.text+0xbe): undefined reference to `__stack_chk_guard' > init/built-in.o: In function `do_one_initcall': > (.text+0xeb): undefined reference to `__stack_chk_guard' > init/built-in.o: In function `do_one_initcall': > (.text+0x22b): undefined reference to `__stack_chk_guard' > init/built-in.o: In function `name_to_dev_t': > (.text+0x320): undefined reference to `__stack_chk_guard' > init/built-in.o:(.text+0x52e): more undefined references to `__stack_chk_guard' This, I don't. I'm scratching my head about how that's possible. The __stack_chk_guard is a compiler alias on x86... > Kees touched it last :) I'll take a closer look tomorrow... -Kees -- Kees Cook Chrome OS & Brillo Security -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>