From: Rafael Mendonca <rafaelmendsr@gmail.com>
To: Mathias Nyman <mathias.nyman@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rafael Mendonca <rafaelmendsr@gmail.com>,
Mathias Nyman <mathias.nyman@linux.intel.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] xhci: dbc: Fix memory leak in xhci_alloc_dbc()
Date: Tue, 13 Sep 2022 23:36:09 -0300 [thread overview]
Message-ID: <20220914023609.695296-1-rafaelmendsr@gmail.com> (raw)
If DbC is already in use, then the allocated memory for the xhci_dbc struct
doesn't get freed before returning NULL, which leads to a memleak.
Fixes: 534675942e90 ("xhci: dbc: refactor xhci_dbc_init()")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
---
drivers/usb/host/xhci-dbgcap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c
index e61155fa6379..f1367b53b260 100644
--- a/drivers/usb/host/xhci-dbgcap.c
+++ b/drivers/usb/host/xhci-dbgcap.c
@@ -988,7 +988,7 @@ xhci_alloc_dbc(struct device *dev, void __iomem *base, const struct dbc_driver *
dbc->driver = driver;
if (readl(&dbc->regs->control) & DBC_CTRL_DBC_ENABLE)
- return NULL;
+ goto err;
INIT_DELAYED_WORK(&dbc->event_work, xhci_dbc_handle_events);
spin_lock_init(&dbc->lock);
--
2.34.1
next reply other threads:[~2022-09-14 2:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-14 2:36 Rafael Mendonca [this message]
2022-09-14 12:27 ` [PATCH] xhci: dbc: Fix memory leak in xhci_alloc_dbc() Mathias Nyman
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