LU-16060 osd-ldiskfs: copy nul byte terminator in writelink

[fs/lustre-release.git] / lustre / osd-ldiskfs / osd_io.c

diff --git a/lustre/osd-ldiskfs/osd_io.c b/lustre/osd-ldiskfs/osd_io.c
index 068ef49..4896da6 100644 (file)
--- a/lustre/osd-ldiskfs/osd_io.c
+++ b/lustre/osd-ldiskfs/osd_io.c
@@ -2062,7 +2062,8 @@ static int osd_ldiskfs_writelink(struct inode *inode, char *buffer, int buflen)
        /* LU-2634: clear the extent format for fast symlink */
        ldiskfs_clear_inode_flag(inode, LDISKFS_INODE_EXTENTS);
 
-       memcpy((char *)&LDISKFS_I(inode)->i_data, (char *)buffer, buflen);
+       /* Copying the NUL byte terminating the link target as well */
+       memcpy((char *)&LDISKFS_I(inode)->i_data, (char *)buffer, buflen + 1);
        spin_lock(&inode->i_lock);
        LDISKFS_I(inode)->i_disksize = buflen;
        i_size_write(inode, buflen);