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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260310201036.542627924@kernel.org> X-Rspamd-Queue-Id: E009BA000B X-Stat-Signature: qrhozd3dygt1hgb9odm4us6j6z5pq5ri X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1773214916-457115 X-HE-Meta: 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 GlhJVIA2 bA5PZgA2l6H1sm491i9ql8DpKHcyyssujMqwO67XO4oXYWKpykrkxq+uA2vFg72adhpxGM6w4CSzbIFpk4XzYukc7+xGpj52gdoNUiLz6Ud2VkdPsup9c/vwnOR4BxUKEj2rD8gq6g2HtBy4b2iWQSYVSIo0DUdpN1JhIg4gmEbaQ/+RzZTbWbTNMjh6+nGTxYjxWCzExMNSlUQ+QhPjqk4BXoLS6YJcJ9+rZtgiPN8GHA94BuWF1UGQ+cFpoDum20X6ZcYGisp5oaFBKLrCzt0fBxA2cSngYXw2y9gqD4Vynvi/FpcIZIN1M1HLNKRJZQIVIcfvwDB2mKr+fxR2LAez//UhTrcmt9B9j 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: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260311/202603110841.Pxedg2y4-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/20260311/202603110841.Pxedg2y4-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/202603110841.Pxedg2y4-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