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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260310201036.542627924@kernel.org> X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: A6CF54000D X-Stat-Signature: 1bx1d3okx8skkosjrdcsqzyd7dhjg79b X-Rspam-User: X-HE-Tag: 1773228270-828074 X-HE-Meta: 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 wQ+dr7vK xj2yE09aDov52Kr+Hm4v7v8gb9+U1MIVZQ76Hlm3mrxvW8ikl+OIzFgh6hp3N0Kejnm/14L6R42P7RWpEeiCc3TN77o0mHRJ9JBvdG5fI1xJSoOtB3WnpyeyC2Ycu56wSEQahjqjLtCTYoLFF1tTqOTLmZjwlZjyz+mwas1xM4p2W6tZcg73pMKEdJYANRWfXP835sF7qRusG6e4kQkGiD5hgDLO0wbl5UYRmbHImTsFf3kO8FAmo/mPVl7Ev5ILZR4wSEPzvWsC+rrpknnPoJcCzgfZXLWpB9IE9rmetReOtplwxRVWk3ccsIfuycwYgWzy/jaNyukhfI23CkeLB9xLHtFdGa2jeqPkm Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Steven, kernel test robot noticed the following build warnings: [auto build test WARNING on tip/locking/core] [also build test WARNING on trace/for-next akpm-mm/mm-everything linus/master v7.0-rc3 next-20260310] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Steven-Rostedt/tracing-Have-futex-syscall-trace-event-show-specific-user-data/20260311-041422 base: tip/locking/core patch link: https://lore.kernel.org/r/20260310201036.542627924%40kernel.org patch subject: [PATCH v2 1/3] tracing: Have futex syscall trace event show specific user data config: arc-randconfig-001-20260311 (https://download.01.org/0day-ci/archive/20260311/202603111911.zAWpiGlz-lkp@intel.com/config) compiler: arc-linux-gcc (GCC) 14.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260311/202603111911.zAWpiGlz-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/202603111911.zAWpiGlz-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/trace/trace_syscalls.c: In function 'syscall_get_futex': >> kernel/trace/trace_syscalls.c:807:15: warning: variable 'buf' set but not used [-Wunused-but-set-variable] 807 | char *buf; | ^~~ vim +/buf +807 kernel/trace/trace_syscalls.c 801 802 static int 803 syscall_get_futex(unsigned long *args, char **buffer, int *size, int buf_size) 804 { 805 struct syscall_user_buffer *sbuf; 806 const char __user *ptr; > 807 char *buf; 808 809 /* buf_size of zero means user doesn't want user space read */ 810 if (!buf_size) 811 return -1; 812 813 /* If the syscall_buffer is NULL, tracing is being shutdown */ 814 sbuf = READ_ONCE(syscall_buffer); 815 if (!sbuf) 816 return -1; 817 818 ptr = (char __user *)args[0]; 819 820 *buffer = trace_user_fault_read(&sbuf->buf, ptr, 4, NULL, NULL); 821 if (!*buffer) 822 return -1; 823 824 /* Add room for the value */ 825 *size += 4; 826 827 buf = *buffer; 828 829 return 0; 830 } 831 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki