From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============7166575311449848121==" MIME-Version: 1.0 From: kernel test robot To: kbuild-all@lists.01.org Subject: [block:for-5.14/io_uring 59/64] fs/io_uring.c:5999:2: warning: Redundant assignment of 'req' to itself. [selfAssignment] Date: Sat, 19 Jun 2021 04:47:06 +0800 Message-ID: <202106190445.pqTQ9X99-lkp@intel.com> List-Id: --===============7166575311449848121== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.g= it for-5.14/io_uring head: 7a778f9dc32deae4f748903f6f9169dc01cbcd28 commit: a3dbdf54da80326fd12bc11ad75ecd699a82374f [59/64] io_uring: refactor= io_get_sequence() compiler: hppa-linux-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot cppcheck warnings: (new ones prefixed by >>) >> fs/io_uring.c:5999:2: warning: Redundant assignment of 'req' to itself. = [selfAssignment] io_for_each_link(req, req) ^ cppcheck possible warnings: (new ones prefixed by >>, may not real problems) fs/io_uring.c:5305:19: warning: Uninitialized variable: req [uninitvar] if (sqe_addr !=3D req->user_data) ^ fs/io_uring.c:5309:10: warning: Uninitialized variable: req [uninitvar] return req; ^ fs/io_uring.c:9491:46: warning: Uninitialized variable: req [uninitvar] seq_printf(m, " op=3D%d, task_works=3D%dn", req->opcode, ^ fs/io_uring.c:9492:6: warning: Uninitialized variable: req [uninitvar] req->task->task_works !=3D NULL); ^ vim +/req +5999 fs/io_uring.c 5993 = 5994 static u32 io_get_sequence(struct io_kiocb *req) 5995 { 5996 u32 seq =3D req->ctx->cached_sq_head; 5997 = 5998 /* need original cached_sq_head, but it was increased for each req = */ > 5999 io_for_each_link(req, req) 6000 seq--; 6001 return seq; 6002 } 6003 = --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============7166575311449848121==--