f2fs: do not return EFSCORRUPTED, but try to run online repair

commit 50a472bbc79ff9d5a88be8019a60e936cadf9f13 upstream.

If we return the error, there's no way to recover the status as of now, since
fsck does not fix the xattr boundary issue.

Cc: stable@vger.kernel.org
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index b73d44d..6efccd7 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2738,7 +2738,9 @@ recover_xnid:
        f2fs_update_inode_page(inode);
 
        /* 3: update and set xattr node page dirty */
-       memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE);
+       if (page)
+               memcpy(F2FS_NODE(xpage), F2FS_NODE(page),
+                               VALID_XATTR_BLOCK_SIZE);
 
        set_page_dirty(xpage);
        f2fs_put_page(xpage, 1);

diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index db3b641..adaad16 100644 (file)
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -363,10 +363,10 @@ static int lookup_all_xattrs(struct inode *inode, struct page *ipage,
 
        *xe = __find_xattr(cur_addr, last_txattr_addr, NULL, index, len, name);
        if (!*xe) {
-               f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
+               f2fs_err(F2FS_I_SB(inode), "lookup inode (%lu) has corrupted xattr",
                                                                inode->i_ino);
                set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
-               err = -EFSCORRUPTED;
+               err = -ENODATA;
                f2fs_handle_error(F2FS_I_SB(inode),
                                        ERROR_CORRUPTED_XATTR);
                goto out;
@@ -583,13 +583,12 @@ ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
 
                if ((void *)(entry) + sizeof(__u32) > last_base_addr ||
                        (void *)XATTR_NEXT_ENTRY(entry) > last_base_addr) {
-                       f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
+                       f2fs_err(F2FS_I_SB(inode), "list inode (%lu) has corrupted xattr",
                                                inode->i_ino);
                        set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
-                       error = -EFSCORRUPTED;
                        f2fs_handle_error(F2FS_I_SB(inode),
                                                ERROR_CORRUPTED_XATTR);
-                       goto cleanup;
+                       break;
                }
 
                if (!handler || (handler->list && !handler->list(dentry)))
@@ -650,7 +649,7 @@ static int __f2fs_setxattr(struct inode *inode, int index,
 
        if (size > MAX_VALUE_LEN(inode))
                return -E2BIG;
-
+retry:
        error = read_all_xattrs(inode, ipage, &base_addr);
        if (error)
                return error;
@@ -660,7 +659,14 @@ static int __f2fs_setxattr(struct inode *inode, int index,
        /* find entry with wanted name. */
        here = __find_xattr(base_addr, last_base_addr, NULL, index, len, name);
        if (!here) {
-               f2fs_err(F2FS_I_SB(inode), "inode (%lu) has corrupted xattr",
+               if (!F2FS_I(inode)->i_xattr_nid) {
+                       f2fs_notice(F2FS_I_SB(inode),
+                               "recover xattr in inode (%lu)", inode->i_ino);
+                       f2fs_recover_xattr_data(inode, NULL);
+                       kfree(base_addr);
+                       goto retry;
+               }
+               f2fs_err(F2FS_I_SB(inode), "set inode (%lu) has corrupted xattr",
                                                                inode->i_ino);
                set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
                error = -EFSCORRUPTED;