On Fri, 11 Mar 2016 18:38:47 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: bb17bf337db5c5af7e75ec5916772c9bffcaf981 > commit: d5e0cb037c3f7a9cc54b9427e0281c7877d62ff3 [11691/11963] mm, kasan: stackdepot implementation. Enable stackdepot for SLAB > config: x86_64-randconfig-v0-03111742 (attached as .config) > reproduce: > git checkout d5e0cb037c3f7a9cc54b9427e0281c7877d62ff3 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All error/warnings (new ones prefixed by >>): > > mm/kasan/kasan.c: In function 'filter_irq_stacks': > >> mm/kasan/kasan.c:429:12: error: dereferencing pointer to incomplete type 'struct stack_trace' > if (!trace->nr_entries) Yeah, that's a bit screwed up. The code needs CONFIG_STACKTRACE but this: --- a/lib/Kconfig.kasan~mm-kasan-stackdepot-implementation-enable-stackdepot-for-slab-fix-fix +++ a/lib/Kconfig.kasan @@ -8,6 +8,7 @@ config KASAN depends on SLUB_DEBUG || (SLAB && !DEBUG_SLAB) select CONSTRUCTORS select STACKDEPOT if SLAB + select STACKTRACE if SLAB help Enables kernel address sanitizer - runtime memory debugger, designed to find out-of-bounds accesses and use-after-free bugs. doesn't work because CONFIG_SLAB=n. And I don't think we want to enable all this extra stuff for slub/slob/etc. Over to you, Alexander. -- 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>