linux-kernel - Re: [PATCH 2/3] remoteproc: Add inline coredump functionality

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Date:   Mon, 20 Apr 2020 14:01:27 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Rishabh Bhatnagar <rishabhb@...eaurora.org>,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, bjorn.andersson@...aro.org,
        ohad@...ery.com, mathieu.poirier@...aro.org, tsoni@...eaurora.org,
        psodagud@...eaurora.org, sidgup@...eaurora.org,
        Rishabh Bhatnagar <rishabhb@...eaurora.org>
Subject: Re: [PATCH 2/3] remoteproc: Add inline coredump functionality

Hi Rishabh,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v5.6]
[cannot apply to linus/master linux/master remoteproc/for-next rpmsg/for-next v5.7-rc1 next-20200416]
[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/Rishabh-Bhatnagar/remoteproc-Make-coredump-functionality-configurable/20200417-042251
base:    7111951b8d4973bda27ff663f2cf18b663d15b48
config: arm-omap2plus_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
        COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   drivers/remoteproc/remoteproc_coredump.c: In function 'rproc_read_dump':
>> drivers/remoteproc/remoteproc_coredump.c:68:32: error: passing argument 3 of 'resolve_addr' from incompatible pointer type [-Werror=incompatible-pointer-types]
      68 |         &rproc->dump_segments, &data_left);
         |                                ^~~~~~~~~~
         |                                |
         |                                size_t * {aka unsigned int *}
   drivers/remoteproc/remoteproc_coredump.c:24:23: note: expected 'long unsigned int *' but argument is of type 'size_t *' {aka 'unsigned int *'}
      24 |        unsigned long *data_left)
         |        ~~~~~~~~~~~~~~~^~~~~~~~~
   cc1: some warnings being treated as errors

vim +/resolve_addr +68 drivers/remoteproc/remoteproc_coredump.c

    44	
    45	static ssize_t rproc_read_dump(char *buffer, loff_t offset, size_t count,
    46					void *data, size_t header_size)
    47	{
    48		void *device_mem;
    49		size_t data_left, copy_size, bytes_left = count;
    50		unsigned long addr;
    51		struct rproc_coredump_state *dump_state = data;
    52		struct rproc *rproc = dump_state->rproc;
    53		void *elfcore = dump_state->header;
    54	
    55		/* Copy the header first */
    56		if (offset < header_size) {
    57			copy_size = header_size - offset;
    58			copy_size = min(copy_size, bytes_left);
    59	
    60			memcpy(buffer, elfcore + offset, copy_size);
    61			offset += copy_size;
    62			bytes_left -= copy_size;
    63			buffer += copy_size;
    64		}
    65	
    66		while (bytes_left) {
    67			addr = resolve_addr(offset - header_size,
  > 68					    &rproc->dump_segments, &data_left);
    69			/* EOF check */
    70			if (data_left == 0) {
    71				pr_info("Ramdump complete %lld bytes read", offset);
    72				break;
    73			}
    74	
    75			copy_size = min_t(size_t, bytes_left, data_left);
    76	
    77			device_mem = rproc->ops->da_to_va(rproc, addr, copy_size);
    78			if (!device_mem) {
    79				pr_err("Address:%lx with size %zd out of remoteproc carveout\n",
    80					addr, copy_size);
    81				return -ENOMEM;
    82			}
    83			memcpy(buffer, device_mem, copy_size);
    84	
    85			offset += copy_size;
    86			buffer += copy_size;
    87			bytes_left -= copy_size;
    88		}
    89	
    90		return count - bytes_left;
    91	}
    92	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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