+Kees, I'm guessing this came in through a hardening branch[*]. I assume using __DECLARE_FLEX_ARRAY isn't an option since this is a uapi header. :-/ [*] https://lore.kernel.org/all/20230105190548.never.323-kees@xxxxxxxxxx On Tue, Jan 17, 2023, Andrew Morton wrote: > a KVM build error here. > > Begin forwarded message: > > Date: Wed, 18 Jan 2023 00:44:23 +0800 > From: kernel test robot <lkp@xxxxxxxxx> > To: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: netdev@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-gpio@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, Linux Memory Management List <linux-mm@xxxxxxxxx> > Subject: [linux-next:master] BUILD REGRESSION 9ce08dd7ea24253aac5fd2519f9aea27dfb390c9 > > > tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > branch HEAD: 9ce08dd7ea24253aac5fd2519f9aea27dfb390c9 Add linux-next specific files for 20230117 > > Error/Warning reports: > > https://lore.kernel.org/oe-kbuild-all/202301100332.4EaKi4d1-lkp@xxxxxxxxx > https://lore.kernel.org/oe-kbuild-all/202301171414.xpf8WpXn-lkp@xxxxxxxxx > https://lore.kernel.org/oe-kbuild-all/202301171511.4ZszviYP-lkp@xxxxxxxxx > > Error/Warning: (recently discovered and may have been fixed) > > Documentation/mm/unevictable-lru.rst:186: WARNING: Title underline too short. > ERROR: modpost: "kunit_running" [drivers/gpu/drm/vc4/vc4.ko] undefined! > arch/arm/kernel/entry-armv.S:485:5: warning: "CONFIG_ARM_THUMB" is not defined, evaluates to 0 [-Wundef] > drivers/gpu/drm/ttm/ttm_bo_util.c:364:32: error: implicit declaration of function 'vmap'; did you mean 'kmap'? [-Werror=implicit-function-declaration] > drivers/gpu/drm/ttm/ttm_bo_util.c:429:17: error: implicit declaration of function 'vunmap'; did you mean 'kunmap'? [-Werror=implicit-function-declaration] > drivers/scsi/qla2xxx/qla_mid.c:1094:51: warning: format '%ld' expects argument of type 'long int', but argument 5 has type 'unsigned int' [-Wformat=] > drivers/scsi/qla2xxx/qla_mid.c:1189:6: warning: no previous prototype for 'qla_trim_buf' [-Wmissing-prototypes] > drivers/scsi/qla2xxx/qla_mid.c:1221:6: warning: no previous prototype for '__qla_adjust_buf' [-Wmissing-prototypes] > libbpf: failed to find '.BTF' ELF section in vmlinux > usr/include/asm/kvm.h:508:17: error: expected specifier-qualifier-list before '__DECLARE_FLEX_ARRAY'
