On Sun, Aug 18, 2019 at 09:17:52PM +0800, kbuild test robot wrote: > Hi Gao, > > I love your patch! Yet something to improve: > > [auto build test ERROR on linus/master] > [cannot apply to v5.3-rc4 next-20190816] > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] ... those patches should be applied to staging tree since linux-next has not been updated yet... Thanks, Gao Xiang > > url: https://github.com/0day-ci/linux/commits/Gao-Xiang/staging-erofs-fix-an-error-handling-in-erofs_readdir/20190818-191344 > config: arm64-allyesconfig (attached as .config) > compiler: aarch64-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=arm64 > > If you fix the issue, kindly add following tag > Reported-by: kbuild test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > drivers/staging/erofs/dir.c: In function 'erofs_readdir': > >> drivers/staging/erofs/dir.c:110:11: error: 'EFSCORRUPTED' undeclared (first use in this function); did you mean 'FS_NRSUPER'? > err = -EFSCORRUPTED; > ^~~~~~~~~~~~ > FS_NRSUPER > drivers/staging/erofs/dir.c:110:11: note: each undeclared identifier is reported only once for each function it appears in > > vim +110 drivers/staging/erofs/dir.c > > 85 > 86 static int erofs_readdir(struct file *f, struct dir_context *ctx) > 87 { > 88 struct inode *dir = file_inode(f); > 89 struct address_space *mapping = dir->i_mapping; > 90 const size_t dirsize = i_size_read(dir); > 91 unsigned int i = ctx->pos / EROFS_BLKSIZ; > 92 unsigned int ofs = ctx->pos % EROFS_BLKSIZ; > 93 int err = 0; > 94 bool initial = true; > 95 > 96 while (ctx->pos < dirsize) { > 97 struct page *dentry_page; > 98 struct erofs_dirent *de; > 99 unsigned int nameoff, maxsize; > 100 > 101 dentry_page = read_mapping_page(mapping, i, NULL); > 102 if (dentry_page == ERR_PTR(-ENOMEM)) { > 103 errln("no memory to readdir of logical block %u of nid %llu", > 104 i, EROFS_V(dir)->nid); > 105 err = -ENOMEM; > 106 break; > 107 } else if (IS_ERR(dentry_page)) { > 108 errln("fail to readdir of logical block %u of nid %llu", > 109 i, EROFS_V(dir)->nid); > > 110 err = -EFSCORRUPTED; > 111 break; > 112 } > 113 > 114 de = (struct erofs_dirent *)kmap(dentry_page); > 115 > 116 nameoff = le16_to_cpu(de->nameoff); > 117 > 118 if (unlikely(nameoff < sizeof(struct erofs_dirent) || > 119 nameoff >= PAGE_SIZE)) { > 120 errln("%s, invalid de[0].nameoff %u", > 121 __func__, nameoff); > 122 > 123 err = -EIO; > 124 goto skip_this; > 125 } > 126 > 127 maxsize = min_t(unsigned int, > 128 dirsize - ctx->pos + ofs, PAGE_SIZE); > 129 > 130 /* search dirents at the arbitrary position */ > 131 if (unlikely(initial)) { > 132 initial = false; > 133 > 134 ofs = roundup(ofs, sizeof(struct erofs_dirent)); > 135 if (unlikely(ofs >= nameoff)) > 136 goto skip_this; > 137 } > 138 > 139 err = erofs_fill_dentries(ctx, de, &ofs, nameoff, maxsize); > 140 skip_this: > 141 kunmap(dentry_page); > 142 > 143 put_page(dentry_page); > 144 > 145 ctx->pos = blknr_to_addr(i) + ofs; > 146 > 147 if (unlikely(err)) > 148 break; > 149 ++i; > 150 ofs = 0; > 151 } > 152 return err < 0 ? err : 0; > 153 } > 154 > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation
