linux-kernel - arch/um/include/asm/kasan.h:29:2: error: #error UML does not work in KASAN_INLINE mode with STATIC

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Message-ID: <202511010249.7L7FB7IA-lkp@intel.com>
Date: Sat, 1 Nov 2025 02:24:24 +0800
From: kernel test robot <lkp@...el.com>
To: Sabyrzhan Tasbolatov <snovitoll@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	"Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Subject: arch/um/include/asm/kasan.h:29:2: error: #error UML does not work in
 KASAN_INLINE mode with STATIC_LINK enabled!

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b909d77359b82821e1c6b6a3a8a51b355b06fdb5
commit: 1e338f4d99e6814ede16bad1db1cc463aad8032c kasan: introduce ARCH_DEFER_KASAN and unify static key across modes
date:   6 weeks ago
config: um-randconfig-r052-20251101 (https://download.01.org/0day-ci/archive/20251101/202511010249.7L7FB7IA-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251101/202511010249.7L7FB7IA-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511010249.7L7FB7IA-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/kasan.h:21,
                    from include/linux/slab.h:260,
                    from include/linux/crypto.h:18,
                    from arch/x86/um/shared/sysdep/kernel-offsets.h:5,
                    from arch/um/kernel/asm-offsets.c:1:
>> arch/um/include/asm/kasan.h:29:2: error: #error UML does not work in KASAN_INLINE mode with STATIC_LINK enabled!
      29 | #error UML does not work in KASAN_INLINE mode with STATIC_LINK enabled!
         |  ^~~~~
   make[3]: *** [scripts/Makefile.build:182: arch/um/kernel/asm-offsets.s] Error 1
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1282: prepare0] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +29 arch/um/include/asm/kasan.h

    27	
    28	#if defined(CONFIG_STATIC_LINK) && defined(CONFIG_KASAN_INLINE)
  > 29	#error UML does not work in KASAN_INLINE mode with STATIC_LINK enabled!
    30	#endif
    31	#else
    32	static inline void kasan_init(void) { }
    33	#endif /* CONFIG_KASAN */
    34	

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https://github.com/intel/lkp-tests/wiki