On Thu, Jan 11, 2024 at 08:29:04PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 9e21984d62c56a0f6d1fc6f76b646212cfd7fe88 > commit: 86817057732a9ce9cefdb6f513b6554a55ebbbbb [12996/13245] mm: vmalloc: remove global vmap_area_root rb-tree > config: um-defconfig (https://download.01.org/0day-ci/archive/20240111/202401112056.I41bELL4-lkp@xxxxxxxxx/config) > compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240111/202401112056.I41bELL4-lkp@xxxxxxxxx/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202401112056.I41bELL4-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>, old ones prefixed by <<): > > WARNING: modpost: missing MODULE_DESCRIPTION() in vmlinux.o > >> WARNING: modpost: vmlinux: section mismatch in reference: vmap_init_free_space+0x2 (section: .text.unlikely) -> vmlist (section: .init.data) > WARNING: modpost: missing MODULE_DESCRIPTION() in fs/binfmt_misc.o > WARNING: modpost: missing MODULE_DESCRIPTION() in fs/isofs/isofs.o > WARNING: modpost: missing MODULE_DESCRIPTION() in fs/autofs/autofs4.o > WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/block/loop.o > WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/net/ppp/ppp_generic.o > WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/net/slip/slip.o > WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/net/slip/slhc.o > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki I have sent out the patch, but just in case please see it below: <snip> >From 998f605679409acdfe625c03b36917db70b6773b Mon Sep 17 00:00:00 2001 From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx> Date: Thu, 11 Jan 2024 14:03:53 +0100 Subject: [PATCH 2/2] mm: vmalloc: Mark vmap_init_free_space() with __init tag The vmap_init_free_space() function is called only once therefore tag it with __init. Apart of that it access the "vmlist" variable that is located in ".init.data" section. Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202401112056.I41bELL4-lkp@xxxxxxxxx/ Fixes: 86817057732 ("mm: vmalloc: remove global vmap_area_root rb-tree") Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx> --- mm/vmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 43a6608e1397..257981e37936 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -4834,7 +4834,7 @@ module_init(proc_vmalloc_init); #endif -static void vmap_init_free_space(void) +static void __init vmap_init_free_space(void) { unsigned long vmap_start = 1; const unsigned long vmap_end = ULONG_MAX; -- 2.39.2 <snip> it can be folded into the: 86817057732 ("mm: vmalloc: remove global vmap_area_root rb-tree") or applied as a separate patch. -- Uladzislau Rezki
