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Petersen (Oracle)" , Sasha Levin Subject: [PATCH 5.15 157/571] scsi: qla2xxx: Fix NVMe abort reference leak on repeated abort Date: Wed, 28 Oct 2026 17:55:04 +0100 Message-ID: <20261028170011.741410948@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170008.009143722@linuxfoundation.org> References: <20261028170008.009143722@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nilesh Javali [ Upstream commit 06b5b2a5d499323f1c3256ead35798e8e3d15e60 ] qla_nvme_ls_abort() and qla_nvme_fcp_abort() take a command reference with kref_get_unless_zero() and then call schedule_work() on priv->abort_work, ignoring its return value. qla_nvme_abort_work() runs once and drops exactly one reference via kref_put(&sp->cmd_kref, sp->put_fn). Since the per-abort INIT_WORK() was moved to submission time, schedule_work() now returns false when the work is already pending, for example on a concurrent transport teardown and timeout-driven abort of the same command. In that case the reference taken for the second abort is never released because the work still executes only once, leaking a reference. The command is then never returned to the NVMe-FC transport, which can hang the port. Drop the reference when schedule_work() returns false, so each kref_get_unless_zero() is balanced regardless of whether the work was newly queued. The held reference keeps priv->sp valid for the put. Fixes: 7e85f6dbc856 ("scsi: qla2xxx: Initialize NVMe abort_work once at submission") Cc: stable@vger.kernel.org Reported-by: Sashiko Signed-off-by: Nilesh Javali Link: https://patch.msgid.link/20260730155838.2119230-25-njavali@marvell.com Signed-off-by: Martin K. Petersen (Oracle) Signed-off-by: Sasha Levin --- drivers/scsi/qla2xxx/qla_nvme.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c index f286254ec7750..84caaa188000b 100644 --- a/drivers/scsi/qla2xxx/qla_nvme.c +++ b/drivers/scsi/qla2xxx/qla_nvme.c @@ -304,7 +304,8 @@ static void qla_nvme_ls_abort(struct nvme_fc_local_port *lport, } spin_unlock_irqrestore(&priv->cmd_lock, flags); - schedule_work(&priv->abort_work); + if (!schedule_work(&priv->abort_work)) + kref_put(&priv->sp->cmd_kref, priv->sp->put_fn); } static int qla_nvme_ls_req(struct nvme_fc_local_port *lport, @@ -386,7 +387,8 @@ static void qla_nvme_fcp_abort(struct nvme_fc_local_port *lport, } spin_unlock_irqrestore(&priv->cmd_lock, flags); - schedule_work(&priv->abort_work); + if (!schedule_work(&priv->abort_work)) + kref_put(&priv->sp->cmd_kref, priv->sp->put_fn); } static inline int qla2x00_start_nvme_mq(srb_t *sp) -- 2.53.0