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charset=utf-8 Content-Transfer-Encoding: quoted-printable BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev TO: Jens Axboe tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git rw_= iter head: 0a49759be1c3b29207758e467fdc1a90d0716d06 commit: 7dfd9f363e6d79bc842bf6e7fa86541a21142fef [115/471] drivers/hid: con= vert to read/write iterators :::::: branch date: 3 days ago :::::: commit date: 3 days ago config: openrisc-randconfig-r071-20260307 (https://download.01.org/0day-ci/= archive/20260310/202603100207.LotLQ2MK-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 15.2.0 smatch: v0.5.0-9004-gb810ac53 If you fix the issue in a separate patch/commit (i.e. not just a new versio= n of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202603100207.LotLQ2MK-lkp@intel.com/ smatch warnings: drivers/hid/hid-picolcd_debugfs.c:50 picolcd_debug_reset_write() warn: pote= ntial spectre issue 'buf' [w] (local cap) vim +/buf +50 drivers/hid/hid-picolcd_debugfs.c fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 37 =20 7dfd9f363e6d79 Jens Axboe 2024-04-05 38 static ssize_t picolcd_debug_r= eset_write(struct kiocb *iocb, 7dfd9f363e6d79 Jens Axboe 2024-04-05 39 struct iov_iter *from) fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 40 { 7dfd9f363e6d79 Jens Axboe 2024-04-05 41 struct picolcd_data *data =3D = ((struct seq_file *)iocb->ki_filp->private_data)->private; 7dfd9f363e6d79 Jens Axboe 2024-04-05 42 size_t count =3D iov_iter_cou= nt(from); fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 43 char buf[32]; fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 44 size_t cnt =3D min(count= , sizeof(buf)-1); 7dfd9f363e6d79 Jens Axboe 2024-04-05 45 if (!copy_from_iter_full(buf,= cnt, from)) fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 46 return -EFAULT; fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 47 =20 fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 48 while (cnt > 0 && (buf[c= nt-1] =3D=3D ' ' || buf[cnt-1] =3D=3D '\n')) fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 49 cnt--; fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 @50 buf[cnt] =3D '\0'; fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 51 if (strcmp(buf, "all") = =3D=3D 0) { fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 52 picolcd_reset(data->hde= v); fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 53 picolcd_fb_reset(data, = 1); fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 54 } else if (strcmp(buf, "= fb") =3D=3D 0) { fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 55 picolcd_fb_reset(data, = 1); fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 56 } else { fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 57 return -EINVAL; fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 58 } fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 59 return count; fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 60 } fabdbf2fd22fa1 Bruno Pr=C3=A9mont 2012-07-30 61 =20 :::::: The code at line 50 was first introduced by commit :::::: fabdbf2fd22fa170b4c5340dbdda5c8cd88fb205 HID: picoLCD: split driver = code :::::: TO: Bruno Pr=C3=A9mont :::::: CC: Jiri Kosina --=20 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki