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mcoverlayfs: fix NULL pointer dereference on ovl_dentry_release()

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This commit is contained in:
Yoichi Umezawa
2017-03-28 21:52:41 +09:00
parent f2ab0193e5
commit 4ee0c05e08
3 changed files with 78 additions and 5 deletions
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4
executer/kernel/mcoverlayfs/linux-4.6.7/inode.c
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@@ -420,8 +420,8 @@ struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags)
dentry, dentry->d_inode->i_ino);
OVL_DEBUG("sysfs: realpath.dentry=%pd4, i_ino=%lu\n",
realpath.dentry, realpath.dentry->d_inode->i_ino);
if (!dentry->d_inode->i_private) {
dentry->d_inode->i_private = dentry->d_fsdata;
if (!ovl_find_d_fsdata(dentry)) {
ovl_add_d_fsdata(dentry);
dentry->d_fsdata = realpath.dentry->d_fsdata;
}
}