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| author | David Woodhouse <David.Woodhouse@intel.com> | 2009-12-16 03:27:20 +0000 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-12-16 03:27:20 +0000 |
| commit | 2e16cfca6e17ae37ae21feca080a6f2eca9087dc (patch) | |
| tree | 6474bcbf5d7f79d359b07fd187093beb4b8b489d | |
| parent | 0a032a4df6dc4a82bcd1c401e57ee71825d30c14 (diff) | |
| download | linux-2e16cfca6e17ae37ae21feca080a6f2eca9087dc.tar.bz2 | |
jffs2: Fix long-standing bug with symlink garbage collection.
Ever since jffs2_garbage_collect_metadata() was first half-written in
February 2001, it's been broken on architectures where 'char' is signed.
When garbage collecting a symlink with target length above 127, the payload
length would end up negative, causing interesting and bad things to happen.
Cc: stable@kernel.org
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | fs/jffs2/gc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c index 090c556ffed2..3b6f2fa12cff 100644 --- a/fs/jffs2/gc.c +++ b/fs/jffs2/gc.c @@ -700,7 +700,8 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_ struct jffs2_raw_inode ri; struct jffs2_node_frag *last_frag; union jffs2_device_node dev; - char *mdata = NULL, mdatalen = 0; + char *mdata = NULL; + int mdatalen = 0; uint32_t alloclen, ilen; int ret; |