The following command crashes u-boot:
./sandbox/u-boot -c 'i=0; host bind 0 ./sandbox/test/fs/3GB.ext4.img ;
while test $i -lt 200 ; do echo $i; setexpr i $i + 1;
ext4write host 0 0 /foobar${i} 0; done'
Previously, the code updated the direct_block even for extents, and
fortunately crashed before pushing garbage to the disk.
Signed-off-by: Stefan Brüns <stefan.bru...@rwth-aachen.de>
Reviewed-by: Lukasz Majewski <l.majew...@samsung.com>
---
fs/ext4/ext4_common.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index 5799bee..dff03fe 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -453,8 +453,13 @@ restart:
sizeof(struct ext2_dirent) + padding_factor;
if ((fs->blksz - totalbytes - last_entry_dirlen) <
new_entry_byte_reqd) {
- printf("1st Block Full:Allocate new block\n");
+ printf("Last Block Full:Allocate new block\n");
+ if (le32_to_cpu(g_parent_inode->flags) &
+ EXT4_EXTENTS_FL) {
+ printf("Directory uses extents\n");
+ goto fail;
+ }
if (direct_blk_idx == INDIRECT_BLOCKS - 1) {
printf("Directory exceeds limit\n");
goto fail;
--
2.9.3
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