@@ -519,6 +519,18 @@ errcode_t ext2fs_xattrs_write(struct ext2_xattr_handle *handle)
if (err)
goto out;
+ /* If extra_isize isn't set, we need to set it now */
+ if (inode->i_extra_isize == 0 &&
+ EXT2_INODE_SIZE(handle->fs->super) > EXT2_GOOD_OLD_INODE_SIZE) {
+ char *p = (char *)inode;
+ size_t extra = handle->fs->super->s_want_extra_isize;
+
+ if (extra == 0)
+ extra = sizeof(__u32);
+ memset(p + EXT2_GOOD_OLD_INODE_SIZE, 0, extra);
+ inode->i_extra_isize = extra;
+ }
+
move_inline_data_to_front(handle);
x = handle->attrs;
new file mode 100644
@@ -0,0 +1,12 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Directory inode 12, block #0, offset 4: directory corrupted
+Salvage? yes
+
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
+test_filesys: 12/128 files (0.0% non-contiguous), 17/512 blocks
+Exit status is 1
new file mode 100644
@@ -0,0 +1,7 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+test_filesys: 12/128 files (0.0% non-contiguous), 17/512 blocks
+Exit status is 0
new file mode 100644
GIT binary patch
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literal 0
HcmV?d00001
new file mode 100644
@@ -0,0 +1 @@
+write EA when i_extra_size is zero
If i_extra_isize is zero when we try to write extended attributes, we'll end up writing the EA magic into the i_extra_isize field, which causes a subsequent crash on big endian systems (when we try to write 0xEA02 bytes past the inode!). Therefore when the field is zero, set i_extra_isize to the desired extra_isize size, zero those bytes, and write the EAs after the end of the extended inode. v2: Don't bother if we have 128b inodes, and ensure that the value is 32b-aligned so that the EA magic starts on a 32b boundary. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> --- lib/ext2fs/ext_attr.c | 12 ++++++++++++ tests/f_write_ea_no_extra_isize/expect.1 | 12 ++++++++++++ tests/f_write_ea_no_extra_isize/expect.2 | 7 +++++++ tests/f_write_ea_no_extra_isize/image.gz | Bin tests/f_write_ea_no_extra_isize/name | 1 + 5 files changed, 32 insertions(+) create mode 100644 tests/f_write_ea_no_extra_isize/expect.1 create mode 100644 tests/f_write_ea_no_extra_isize/expect.2 create mode 100644 tests/f_write_ea_no_extra_isize/image.gz create mode 100644 tests/f_write_ea_no_extra_isize/name -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html