From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8E7F1FBF6 for ; Mon, 15 May 2023 17:56:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5B44C433EF; Mon, 15 May 2023 17:56:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684173410; bh=a1wuttiHZu7FU/K7SAv3AWr2Ym+zysD0eIfoTn8HnyE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bbPAKIt3gEzV2FT+klbru6BzE7voFZ7xUv2es8A07PabBIW5Ah0dmsriB+tcBGXA1 shysVIcWYsYu4U7Dc7haRa4gS5uB0gxuR7cWgMUHczLQDTylL5qMWgJI36N/XkjL9j 2nCyKQkJ8xXwjOUBABqsHeGM5o7rUsZiVClHo6Zw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mike Christie , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 5.4 086/282] scsi: target: iscsit: Fix TAS handling during conn cleanup Date: Mon, 15 May 2023 18:27:44 +0200 Message-Id: <20230515161724.837729952@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161722.146344674@linuxfoundation.org> References: <20230515161722.146344674@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Mike Christie [ Upstream commit cc79da306ebb2edb700c3816b90219223182ac3c ] Fix a bug added in commit f36199355c64 ("scsi: target: iscsi: Fix cmd abort fabric stop race"). If CMD_T_TAS is set on the se_cmd we must call iscsit_free_cmd() to do the last put on the cmd and free it, because the connection is down and we will not up sending the response and doing the put from the normal I/O path. Add a check for CMD_T_TAS in iscsit_release_commands_from_conn() so we now detect this case and run iscsit_free_cmd(). Fixes: f36199355c64 ("scsi: target: iscsi: Fix cmd abort fabric stop race") Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20230319015620.96006-9-michael.christie@oracle.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/target/iscsi/iscsi_target.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 3403667a9592f..8b8afa95fbbae 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -4084,9 +4084,12 @@ static void iscsit_release_commands_from_conn(struct iscsi_conn *conn) list_for_each_entry_safe(cmd, cmd_tmp, &tmp_list, i_conn_node) { struct se_cmd *se_cmd = &cmd->se_cmd; - if (se_cmd->se_tfo != NULL) { - spin_lock_irq(&se_cmd->t_state_lock); - if (se_cmd->transport_state & CMD_T_ABORTED) { + if (!se_cmd->se_tfo) + continue; + + spin_lock_irq(&se_cmd->t_state_lock); + if (se_cmd->transport_state & CMD_T_ABORTED) { + if (!(se_cmd->transport_state & CMD_T_TAS)) /* * LIO's abort path owns the cleanup for this, * so put it back on the list and let @@ -4094,11 +4097,10 @@ static void iscsit_release_commands_from_conn(struct iscsi_conn *conn) */ list_move_tail(&cmd->i_conn_node, &conn->conn_cmd_list); - } else { - se_cmd->transport_state |= CMD_T_FABRIC_STOP; - } - spin_unlock_irq(&se_cmd->t_state_lock); + } else { + se_cmd->transport_state |= CMD_T_FABRIC_STOP; } + spin_unlock_irq(&se_cmd->t_state_lock); } spin_unlock_bh(&conn->cmd_lock); -- 2.39.2