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Subjectdrivers/remoteproc/remoteproc_coredump.c:169:53: sparse: sparse: incorrect type in argument 2 (different address spaces)
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: cb690f5238d71f543f4ce874aa59237cf53a877c
commit: 40df0a91b2a5228ded8e5f75b80d28c96c6831cd remoteproc: add is_iomem to da_to_va
date: 8 months ago
config: m68k-randconfig-s031-20211109 (attached as .config)
compiler: m68k-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=40df0a91b2a5228ded8e5f75b80d28c96c6831cd
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 40df0a91b2a5228ded8e5f75b80d28c96c6831cd
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=m68k

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


sparse warnings: (new ones prefixed by >>)
>> drivers/remoteproc/remoteproc_coredump.c:169:53: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const volatile [noderef] __iomem *src @@ got void *[assigned] ptr @@
drivers/remoteproc/remoteproc_coredump.c:169:53: sparse: expected void const volatile [noderef] __iomem *src
drivers/remoteproc/remoteproc_coredump.c:169:53: sparse: got void *[assigned] ptr

vim +169 drivers/remoteproc/remoteproc_coredump.c

150
151 static void rproc_copy_segment(struct rproc *rproc, void *dest,
152 struct rproc_dump_segment *segment,
153 size_t offset, size_t size)
154 {
155 void *ptr;
156 bool is_iomem;
157
158 if (segment->dump) {
159 segment->dump(rproc, segment, dest, offset, size);
160 } else {
161 ptr = rproc_da_to_va(rproc, segment->da + offset, size, &is_iomem);
162 if (!ptr) {
163 dev_err(&rproc->dev,
164 "invalid copy request for segment %pad with offset %zu and size %zu)\n",
165 &segment->da, offset, size);
166 memset(dest, 0xff, size);
167 } else {
168 if (is_iomem)
> 169 memcpy_fromio(dest, ptr, size);
170 else
171 memcpy(dest, ptr, size);
172 }
173 }
174 }
175

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