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X-CSE-ConnectionGUID: lBgUDEM+SpiPg3fjUR9F1Q== X-CSE-MsgGUID: zLq7Zgj+T5u6aB8da7WASw== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="66187894" X-IronPort-AV: E=Sophos;i="6.19,256,1754982000"; d="scan'208";a="66187894" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Oct 2025 21:44:45 -0700 X-CSE-ConnectionGUID: GDS0Z1SIRHGeje471Z1IRg== X-CSE-MsgGUID: 7YbqpuzNS4OE3DxxayX9BQ== X-ExtLoop1: 1 Received: from lkp-server02.sh.intel.com (HELO 66d7546c76b2) ([10.239.97.151]) by fmviesa003.fm.intel.com with ESMTP; 25 Oct 2025 21:44:41 -0700 Received: from kbuild by 66d7546c76b2 with local (Exim 4.96) (envelope-from ) id 1vCscK-000Fsn-1I; Sun, 26 Oct 2025 04:44:34 +0000 Date: Sun, 26 Oct 2025 12:42:28 +0800 From: kernel test robot To: Menglong Dong , ast@kernel.org, jolsa@kernel.org Cc: oe-kbuild-all@lists.linux.dev, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, mattbobrowski@google.com, rostedt@goodmis.org, mhiramat@kernel.org, leon.hwang@linux.dev, jiang.biao@linux.dev, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: Re: [PATCH bpf-next v3 2/7] bpf: add two kfunc for TRACE_SESSION Message-ID: <202510261253.qRd57kJv-lkp@intel.com> References: <20251026030143.23807-3-dongml2@chinatelecom.cn> 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: <20251026030143.23807-3-dongml2@chinatelecom.cn> Hi Menglong, 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/Menglong-Dong/bpf-add-tracing-session-support/20251026-110720 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20251026030143.23807-3-dongml2%40chinatelecom.cn patch subject: [PATCH bpf-next v3 2/7] bpf: add two kfunc for TRACE_SESSION config: i386-buildonly-randconfig-003-20251026 (https://download.01.org/0day-ci/archive/20251026/202510261253.qRd57kJv-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/20251026/202510261253.qRd57kJv-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/202510261253.qRd57kJv-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/trace/bpf_trace.c: In function '____bpf_trace_printk': kernel/trace/bpf_trace.c:377:9: warning: function '____bpf_trace_printk' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 377 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ kernel/trace/bpf_trace.c: In function '____bpf_trace_vprintk': kernel/trace/bpf_trace.c:433:9: warning: function '____bpf_trace_vprintk' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 433 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ kernel/trace/bpf_trace.c: In function '____bpf_seq_printf': kernel/trace/bpf_trace.c:475:9: warning: function '____bpf_seq_printf' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 475 | seq_bprintf(m, fmt, data.bin_args); | ^~~~~~~~~~~ kernel/trace/bpf_trace.c: In function 'bpf_fsession_cookie': >> kernel/trace/bpf_trace.c:3379:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 3379 | return (u64 *)((u64 *)ctx)[nr_args + 2]; | ^ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for I2C_K1 Depends on [n]: I2C [=y] && HAS_IOMEM [=y] && (ARCH_SPACEMIT || COMPILE_TEST [=y]) && OF [=n] Selected by [y]: - MFD_SPACEMIT_P1 [=y] && HAS_IOMEM [=y] && (ARCH_SPACEMIT || COMPILE_TEST [=y]) && I2C [=y] vim +3379 kernel/trace/bpf_trace.c 3372 3373 __bpf_kfunc u64 *bpf_fsession_cookie(void *ctx) 3374 { 3375 /* This helper call is inlined by verifier. */ 3376 u64 nr_args = ((u64 *)ctx)[-1]; 3377 3378 /* ctx[nr_args + 2] is the session cookie address */ > 3379 return (u64 *)((u64 *)ctx)[nr_args + 2]; 3380 } 3381 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki