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X-CSE-ConnectionGUID: ZvZOftbGQimLGCUnhmxoDw== X-CSE-MsgGUID: Qq+1Nr5aQRi82HP2FixxLg== X-IronPort-AV: E=McAfee;i="6700,10204,11231"; a="16557540" X-IronPort-AV: E=Sophos;i="6.11,219,1725346800"; d="scan'208";a="16557540" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2024 12:53:14 -0700 X-CSE-ConnectionGUID: yFDUaOssRtWYrHNbgiCIFw== X-CSE-MsgGUID: sPLuMLrSSIms6gOVGDUQBA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,219,1725346800"; d="scan'208";a="78989801" Received: from lkp-server01.sh.intel.com (HELO a48cf1aa22e8) ([10.239.97.150]) by fmviesa007.fm.intel.com with ESMTP; 20 Oct 2024 12:53:12 -0700 Received: from kbuild by a48cf1aa22e8 with local (Exim 4.96) (envelope-from ) id 1t2bzC-000Qkx-06; Sun, 20 Oct 2024 19:53:10 +0000 Date: Mon, 21 Oct 2024 03:52:24 +0800 From: kernel test robot To: Yonghong Song , bpf@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , kernel-team@fb.com, Martin KaFai Lau , Tejun Heo Subject: Re: [PATCH bpf-next v5 7/9] bpf, x86: Add jit support for private stack Message-ID: <202410210358.dvPfsO1C-lkp@intel.com> References: <20241017223214.3177977-1-yonghong.song@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241017223214.3177977-1-yonghong.song@linux.dev> Hi Yonghong, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Yonghong-Song/bpf-Allow-each-subprog-having-stack-size-of-512-bytes/20241018-063530 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20241017223214.3177977-1-yonghong.song%40linux.dev patch subject: [PATCH bpf-next v5 7/9] bpf, x86: Add jit support for private stack config: x86_64-randconfig-122-20241021 (https://download.01.org/0day-ci/archive/20241021/202410210358.dvPfsO1C-lkp@intel.com/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/20241021/202410210358.dvPfsO1C-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202410210358.dvPfsO1C-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> arch/x86/net/bpf_jit_comp.c:1487:44: sparse: sparse: cast removes address space '__percpu' of expression arch/x86/net/bpf_jit_comp.c:1488:31: sparse: sparse: cast removes address space '__percpu' of expression arch/x86/net/bpf_jit_comp.c:2073:54: sparse: sparse: cast truncates bits from constant value (800000a00000 becomes a00000) vim +/__percpu +1487 arch/x86/net/bpf_jit_comp.c 1477 1478 static void emit_root_priv_frame_ptr(u8 **pprog, struct bpf_prog *bpf_prog, 1479 u32 orig_stack_depth) 1480 { 1481 void __percpu *priv_frame_ptr; 1482 u8 *prog = *pprog; 1483 1484 priv_frame_ptr = bpf_prog->aux->priv_stack_ptr + orig_stack_depth; 1485 1486 /* movabs r9, priv_frame_ptr */ > 1487 emit_mov_imm64(&prog, X86_REG_R9, (long) priv_frame_ptr >> 32, 1488 (u32) (long) priv_frame_ptr); 1489 #ifdef CONFIG_SMP 1490 /* add , gs:[] */ 1491 EMIT2(0x65, 0x4c); 1492 EMIT3(0x03, 0x0c, 0x25); 1493 EMIT((u32)(unsigned long)&this_cpu_off, 4); 1494 #endif 1495 *pprog = prog; 1496 } 1497 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki