On Wed, Sep 27, 2023 at 06:37:10AM -0700, Guenter Roeck wrote:

Hi,

I see the following build failure with v5.15.133.

Build reference: v5.15.133 Compiler version: aarch64-linux-gcc (GCC) 11.4.0 Assembler version: GNU assembler (GNU Binutils) 2.40

Building arm64:allnoconfig ... passed Building arm64:tinyconfig ... passed Building arm64:defconfig ... failed

---

Error log: drivers/interconnect/core.c: In function 'icc_init': drivers/interconnect/core.c:1148:9: error: implicit declaration of function 'fs_reclaim_acquire' [-Werror=implicit-function-declaration] 1148 | fs_reclaim_acquire(GFP_KERNEL); | ^~~~~~~~~~~~~~~~~~ drivers/interconnect/core.c:1150:9: error: implicit declaration of function 'fs_reclaim_release' [-Werror=implicit-function-declaration] 1150 | fs_reclaim_release(GFP_KERNEL); | ^~~~~~~~~~~~~~~~~~

This also affects alpha:allmodconfig and m68k:allmodconfig. The problem was introduced with 'interconnect: Teach lockdep about icc_bw_lock order'.

#include <linux/sched/mm.h> is missing. Presumably that is included indirectly in the upstream kernel, but I wasn't able to determine which commit added it.

Guenter

Thanks for the report, our CI is also pretty red for ARCH=arm64 linux-5.15.y builds. Also one ARCH=arm build we have that's using Alpine's config is hitting the same issue. Making note of this with our ML CC'ed so that other folks don't potentially re-triage. Happy to hear there's already a fix inbound.