From: kbuild test robot <lkp@intel.com>
To: Kees Cook <keescook@chromium.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, Stephen Boyd <swboyd@chromium.org>,
iommu@lists.linux-foundation.org,
Semmle Security Reports <security-reports@semmle.com>,
kbuild-all@01.org, Jesper Dangaard Brouer <brouer@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Laura Abbott <labbott@redhat.com>,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
Allison Randal <allison@lohutok.net>
Subject: Re: [PATCH v2] dma-mapping: Move vmap address checks into dma_map_single()
Date: Fri, 11 Oct 2019 15:20:52 +0800 [thread overview]
Message-ID: <201910111445.5ygljXYD%lkp@intel.com> (raw)
In-Reply-To: <201910041420.F6E55D29A@keescook>
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Hi Kees,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master]
[cannot apply to v5.4-rc2 next-20191010]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Kees-Cook/dma-mapping-Move-vmap-address-checks-into-dma_map_single/20191005-073954
config: sh-magicpanelr2_defconfig (attached as .config)
compiler: sh4-linux-gcc (GCC) 7.4.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=sh
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from arch/sh/include/asm/bug.h:112:0,
from include/linux/bug.h:5,
from include/linux/thread_info.h:12,
from include/asm-generic/preempt.h:5,
from ./arch/sh/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/spinlock.h:51,
from include/linux/seqlock.h:36,
from include/linux/time.h:6,
from include/linux/stat.h:19,
from include/linux/module.h:10,
from arch/sh/kernel/io.c:8:
include/linux/dma-mapping.h: In function 'dma_map_single_attrs':
>> include/linux/dma-mapping.h:588:9: error: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'size_t {aka unsigned int}' [-Werror=format=]
"%s %s: driver maps %lu bytes from vmalloc area\n",
^
include/asm-generic/bug.h:92:17: note: in definition of macro '__WARN_printf'
__warn_printk(arg); \
^~~
include/asm-generic/bug.h:155:3: note: in expansion of macro 'WARN'
WARN(1, format); \
^~~~
include/linux/dma-mapping.h:587:6: note: in expansion of macro 'WARN_ONCE'
if (WARN_ONCE(is_vmalloc_addr(ptr),
^~~~~~~~~
cc1: all warnings being treated as errors
vim +588 include/linux/dma-mapping.h
582
583 static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
584 size_t size, enum dma_data_direction dir, unsigned long attrs)
585 {
586 /* DMA must never operate on areas that might be remapped. */
587 if (WARN_ONCE(is_vmalloc_addr(ptr),
> 588 "%s %s: driver maps %lu bytes from vmalloc area\n",
589 dev ? dev_driver_string(dev) : "unknown driver",
590 dev ? dev_name(dev) : "unknown device", size))
591 return DMA_MAPPING_ERROR;
592
593 debug_dma_map_single(dev, ptr, size);
594 return dma_map_page_attrs(dev, virt_to_page(ptr), offset_in_page(ptr),
595 size, dir, attrs);
596 }
597
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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prev parent reply other threads:[~2019-10-11 7:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-04 21:28 [PATCH v2] dma-mapping: Move vmap address checks into dma_map_single() Kees Cook
2019-10-04 21:38 ` Florian Fainelli
2019-10-05 7:26 ` Greg Kroah-Hartman
2019-10-05 8:40 ` Christoph Hellwig
2019-10-05 14:53 ` kbuild test robot
2019-10-11 7:20 ` kbuild test robot [this message]
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