[PATCH RFC 2/5] UBIFS: fix couple bugs in UBIFS extended attribute length calculation

From: Marc Kleine-Budde
Date: Wed Feb 13 2013 - 05:23:56 EST


From: Subodh Nijsure <snijsure@xxxxxxxxxxxx>

Signed-off-by: Subodh Nijsure <snijsure@xxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
---
fs/ubifs/journal.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index afaad07..6981d7d 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -572,7 +572,12 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,

aligned_dlen = ALIGN(dlen, 8);
aligned_ilen = ALIGN(ilen, 8);
- len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
+ /*
+ * Make sure to account for dir_ui+data_len in length
+ * calculation in case there is extended attribute.
+ */
+ len = aligned_dlen + aligned_ilen +
+ UBIFS_INO_NODE_SZ + dir_ui->data_len;
dent = kmalloc(len, GFP_NOFS);
if (!dent)
return -ENOMEM;
@@ -649,7 +654,8 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,

ino_key_init(c, &ino_key, dir->i_ino);
ino_offs += aligned_ilen;
- err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
+ err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs,
+ UBIFS_INO_NODE_SZ + dir_ui->data_len);
if (err)
goto out_ro;

--
1.7.10.4

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