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| author | Adam Thomas <adamthomas1111@gmail.com> | 2013-02-02 23:35:08 +0100 |
|---|---|---|
| committer | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2013-02-04 11:31:48 +0100 |
| commit | 8afd500cb52a5d00bab4525dd5a560d199f979b9 (patch) | |
| tree | 91ee2f6917c1f84300308dc6e659865cae89a3cc /fs/ubifs/ubifs.h | |
| parent | UBIFS: fix use of freed ubifs_orphan objects (diff) | |
| download | linux-8afd500cb52a5d00bab4525dd5a560d199f979b9.tar.xz linux-8afd500cb52a5d00bab4525dd5a560d199f979b9.zip | |
UBIFS: fix double free of ubifs_orphan objects
The last orphan in the dnext list has its dnext set to NULL. Because
of that, ubifs_delete_orphan assumes that it is not on the dnext list
and frees it immediately instead ignoring it as a second delete. The
orphan is later freed again by erase_deleted.
This change adds an explicit flag to ubifs_orphan indicating whether
it is pending delete.
Signed-off-by: Adam Thomas <adamthomas1111@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index c16fff7271d3..b2babce4d70f 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -905,6 +905,7 @@ struct ubifs_budget_req { * @inum: inode number * @new: %1 => added since the last commit, otherwise %0 * @cmt: %1 => commit pending, otherwise %0 + * @del: %1 => delete pending, otherwise %0 */ struct ubifs_orphan { struct rb_node rb; @@ -915,6 +916,7 @@ struct ubifs_orphan { ino_t inum; unsigned new:1; unsigned cmt:1; + unsigned del:1; }; /** |