linux-kernel - [PATCH 4.18 155/228] Revert "usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding

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: <20181002132509.492467889@linuxfoundation.org>
Date:   Tue,  2 Oct 2018 06:24:12 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH 4.18 155/228] Revert "usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()"

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

commit e871db8d78df1c411032cbb3acfdf8930509360e upstream.

This reverts commit 6e22e3af7bb3a7b9dc53cb4687659f6e63fca427.

The bug the patch describes to, has been already fixed in commit
2df6948428542 ("USB: cdc-wdm: don't enable interrupts in USB-giveback")
so need to this, revert it.

Fixes: 6e22e3af7bb3 ("usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()")
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/class/cdc-wdm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -458,7 +458,7 @@ static int service_outstanding_interrupt
 
 	set_bit(WDM_RESPONDING, &desc->flags);
 	spin_unlock_irq(&desc->iuspin);
-	rv = usb_submit_urb(desc->response, GFP_ATOMIC);
+	rv = usb_submit_urb(desc->response, GFP_KERNEL);
 	spin_lock_irq(&desc->iuspin);
 	if (rv) {
 		dev_err(&desc->intf->dev,