linux-kernel - [PATCH 5.10 288/289] nvme: do not try to reconfigure APST when the controller is not live

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210517140314.845106593@linuxfoundation.org>
Date:   Mon, 17 May 2021 16:03:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Peng Liu <liupeng17@...ovo.com>,
        Christoph Hellwig <hch@....de>, Keith Busch <kbusch@...nel.org>
Subject: [PATCH 5.10 288/289] nvme: do not try to reconfigure APST when the controller is not live

From: Christoph Hellwig <hch@....de>

commit 53fe2a30bc168db9700e00206d991ff934973cf1 upstream.

Do not call nvme_configure_apst when the controller is not live, given
that nvme_configure_apst will fail due the lack of an admin queue when
the controller is being torn down and nvme_set_latency_tolerance is
called from dev_pm_qos_hide_latency_tolerance.

Fixes: 510a405d945b("nvme: fix memory leak for power latency tolerance")
Reported-by: Peng Liu <liupeng17@...ovo.com>
Signed-off-by: Christoph Hellwig <hch@....de>
Reviewed-by: Keith Busch <kbusch@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/nvme/host/core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2622,7 +2622,8 @@ static void nvme_set_latency_tolerance(s
 
 	if (ctrl->ps_max_latency_us != latency) {
 		ctrl->ps_max_latency_us = latency;
-		nvme_configure_apst(ctrl);
+		if (ctrl->state == NVME_CTRL_LIVE)
+			nvme_configure_apst(ctrl);
 	}
 }