Commit 5fb282ba authored by Marios Makassikis's avatar Marios Makassikis Committed by Steve French
Browse files

ksmbd: fix possible null-deref in smb_lazy_parent_lease_break_close 



rcu_dereference can return NULL, so make sure we check against that.

Signed-off-by: default avatarMarios Makassikis <mmakassikis@freebox.fr>
Acked-by: default avatarNamjae Jeon <linkinjeon@kernel.org>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent c8efcc78

fs/smb/server/oplock.c

+1 −1
Original line number Diff line number Diff line
@@ -1143,7 +1143,7 @@ void smb_lazy_parent_lease_break_close(struct ksmbd_file *fp) 
	opinfo = rcu_dereference(fp->f_opinfo);

	rcu_read_unlock();



	if (!opinfo->is_lease || opinfo->o_lease->version != 2)

	if (!opinfo || !opinfo->is_lease || opinfo->o_lease->version != 2)

		return;



	p_ci = ksmbd_inode_lookup_lock(fp->filp->f_path.dentry->d_parent);