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Diffstat (limited to 'fs/jffs2/readinode.c')
-rw-r--r--fs/jffs2/readinode.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index dc0437e8476..1ea349fff68 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -1266,19 +1266,25 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
/* Symlink's inode data is the target path. Read it and
* keep in RAM to facilitate quick follow symlink
* operation. */
- f->target = kmalloc(je32_to_cpu(latest_node->csize) + 1, GFP_KERNEL);
+ uint32_t csize = je32_to_cpu(latest_node->csize);
+ if (csize > JFFS2_MAX_NAME_LEN) {
+ mutex_unlock(&f->sem);
+ jffs2_do_clear_inode(c, f);
+ return -ENAMETOOLONG;
+ }
+ f->target = kmalloc(csize + 1, GFP_KERNEL);
if (!f->target) {
- JFFS2_ERROR("can't allocate %d bytes of memory for the symlink target path cache\n", je32_to_cpu(latest_node->csize));
+ JFFS2_ERROR("can't allocate %u bytes of memory for the symlink target path cache\n", csize);
mutex_unlock(&f->sem);
jffs2_do_clear_inode(c, f);
return -ENOMEM;
}
ret = jffs2_flash_read(c, ref_offset(rii.latest_ref) + sizeof(*latest_node),
- je32_to_cpu(latest_node->csize), &retlen, (char *)f->target);
+ csize, &retlen, (char *)f->target);
- if (ret || retlen != je32_to_cpu(latest_node->csize)) {
- if (retlen != je32_to_cpu(latest_node->csize))
+ if (ret || retlen != csize) {
+ if (retlen != csize)
ret = -EIO;
kfree(f->target);
f->target = NULL;
@@ -1287,7 +1293,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
return ret;
}
- f->target[je32_to_cpu(latest_node->csize)] = '\0';
+ f->target[csize] = '\0';
dbg_readinode("symlink's target '%s' cached\n", f->target);
}
@@ -1415,6 +1421,7 @@ int jffs2_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *i
mutex_unlock(&f->sem);
jffs2_do_clear_inode(c, f);
}
+ jffs2_xattr_do_crccheck_inode(c, ic);
kfree (f);
return ret;
}