Some mutex_unlocks appear to be needed in the function cma_heap_vmap. julia ---------- Forwarded message ---------- Date: Sat, 26 Sep 2020 18:11:36 +0800 From: kernel test robot <lkp(a)intel.com&gt; To: kbuild(a)lists.01.org Cc: lkp(a)intel.com, Julia Lawall <julia.lawall(a)lip6.fr&gt; Subject: Re: [RFC][PATCH 2/6] dma-buf: heaps: Move heap-helper logic into the cma_heap implementation CC: kbuild-all(a)lists.01.org In-Reply-To: <20200926042453.67517-3-john.stultz(a)linaro.org&gt; References: <20200926042453.67517-3-john.stultz(a)linaro.org&gt; TO: John Stultz <john.stultz(a)linaro.org&gt; Hi John, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on linux/master] [also build test WARNING on tegra-drm/drm/tegra/for-next linus/master next-20200925] [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] url: https://github.com/0day-ci/linux/commits/John-Stultz/dma-buf-Performance-... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git bcf876870b95592b52519ed4aafcf9d95999bc9c :::::: branch date: 6 hours ago :::::: commit date: 6 hours ago config: x86_64-randconfig-c002-20200925 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Julia Lawall <julia.lawall(a)lip6.fr&gt; coccinelle warnings: (new ones prefixed by >>) drivers/dma-buf/heaps/cma_heap.c:208:2-8: preceding lock on line 200 -- Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org