Re: [PATCH 1/2] misc: fastrpc: Add fdlist implementation

From: kernel test robot
Date: Tue Nov 30 2021 - 18:53:14 EST


Hi Jeya,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on v5.16-rc3 next-20211130]
[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/Jeya-R/misc-fastrpc-Add-fdlist-implementation/20211130-215833
base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 5d331b5922551637c586cdf5fdc1778910fc937f
config: hexagon-randconfig-r045-20211129 (https://download.01.org/0day-ci/archive/20211201/202112010754.IfnGCvD7-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 25eb7fa01d7ebbe67648ea03841cda55b4239ab2)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/d9eaed76074c94c9751c3a587ef2409fa7ce153e
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Jeya-R/misc-fastrpc-Add-fdlist-implementation/20211130-215833
git checkout d9eaed76074c94c9751c3a587ef2409fa7ce153e
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/misc/

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

All errors (new ones prefixed by >>):

>> drivers/misc/fastrpc.c:923:25: error: use of undeclared identifier 'fl'
if (!fastrpc_map_find(fl, (int)fdlist[i], &mmap))
^
1 error generated.


vim +/fl +923 drivers/misc/fastrpc.c

886
887 static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx,
888 u32 kernel)
889 {
890 struct fastrpc_remote_arg *rpra = ctx->rpra;
891 struct fastrpc_map *mmap = NULL;
892 struct fastrpc_invoke_buf *list;
893 struct fastrpc_phy_page *pages;
894 u64 *fdlist;
895 int i, inbufs, outbufs, handles;
896
897 inbufs = REMOTE_SCALARS_INBUFS(ctx->sc);
898 outbufs = REMOTE_SCALARS_OUTBUFS(ctx->sc);
899 handles = REMOTE_SCALARS_INHANDLES(ctx->sc) + REMOTE_SCALARS_OUTHANDLES(ctx->sc);
900 list = ctx->buf->virt + ctx->nscalars * sizeof(*rpra);
901 pages = ctx->buf->virt + ctx->nscalars * (sizeof(*list) +
902 sizeof(*rpra));
903 fdlist = (uint64_t *)(pages + inbufs + outbufs + handles);
904
905 for (i = inbufs; i < ctx->nbufs; ++i) {
906 if (!ctx->maps[i]) {
907 void *src = (void *)(uintptr_t)rpra[i].pv;
908 void *dst = (void *)(uintptr_t)ctx->args[i].ptr;
909 u64 len = rpra[i].len;
910
911 if (!kernel) {
912 if (copy_to_user((void __user *)dst, src, len))
913 return -EFAULT;
914 } else {
915 memcpy(dst, src, len);
916 }
917 }
918 }
919
920 for (i = 0; i < FASTRPC_MAX_FDLIST; i++) {
921 if (!fdlist[i])
922 break;
> 923 if (!fastrpc_map_find(fl, (int)fdlist[i], &mmap))
924 fastrpc_map_put(mmap);
925 }
926
927 return 0;
928 }
929

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0-DAY CI Kernel Test Service, Intel Corporation
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