Line 460 looks suspicious. Can tmprange be different than range but not be an ERR_PTR? If so, lpcdev->io_host will have an invalid value. julia ---------- Forwarded message ---------- Date: Tue, 14 Mar 2017 13:12:05 +0800 From: kbuild test robot <fengguang.wu@xxxxxxxxx> To: kbuild@xxxxxx Cc: Julia Lawall <julia.lawall@xxxxxxx> Subject: Re: [PATCH V7 4/7] LPC: Support the device-tree LPC host on Hip06/Hip07 Hi zhichang.yuan, [auto build test WARNING on linus/master] [also build test WARNING on v4.11-rc2 next-20170310] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/zhichang-yuan/LPC-legacy-ISA-I-O-support/20170314-114635 :::::: branch date: 85 minutes ago :::::: commit date: 85 minutes ago >> drivers/bus/hisi_lpc.c:465:19-24: ERROR: reference preceded by free on line 460 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 4e05ad6c3274fa75c903c7809ef0b51329a31ab2 vim +465 drivers/bus/hisi_lpc.c 4e05ad6c zhichang.yuan 2017-03-13 454 range->flags = IO_HOST_INDIRECT; 4e05ad6c zhichang.yuan 2017-03-13 455 range->size = LPC_BUS_IO_SIZE; 4e05ad6c zhichang.yuan 2017-03-13 456 range->hw_start = LPC_MIN_BUS_RANGE; 4e05ad6c zhichang.yuan 2017-03-13 457 4e05ad6c zhichang.yuan 2017-03-13 458 tmprange = register_libio_range(range); 4e05ad6c zhichang.yuan 2017-03-13 459 if (tmprange != range) { 4e05ad6c zhichang.yuan 2017-03-13 @460 kfree(range); 4e05ad6c zhichang.yuan 2017-03-13 461 if (IS_ERR(tmprange)) 4e05ad6c zhichang.yuan 2017-03-13 462 return -EFAULT; 4e05ad6c zhichang.yuan 2017-03-13 463 } 4e05ad6c zhichang.yuan 2017-03-13 464 4e05ad6c zhichang.yuan 2017-03-13 @465 lpcdev->io_host = range; 4e05ad6c zhichang.yuan 2017-03-13 466 4e05ad6c zhichang.yuan 2017-03-13 467 return 0; 4e05ad6c zhichang.yuan 2017-03-13 468 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
