From: <gregkh@linuxfoundation.org>
To: khoroshilov@ispras.ru, gregkh@linuxfoundation.org, johan@kernel.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "USB: serial: mos7720: fix non-atomic allocation in write path" has been added to the 4.4-stable tree
Date: Mon, 05 Sep 2016 16:24:34 +0200 [thread overview]
Message-ID: <147308547495193@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
USB: serial: mos7720: fix non-atomic allocation in write path
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-serial-mos7720-fix-non-atomic-allocation-in-write-path.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 5a5a1d614287a647b36dff3f40c2b0ceabbc83ec Mon Sep 17 00:00:00 2001
From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Fri, 12 Aug 2016 01:05:08 +0300
Subject: USB: serial: mos7720: fix non-atomic allocation in write path
From: Alexey Khoroshilov <khoroshilov@ispras.ru>
commit 5a5a1d614287a647b36dff3f40c2b0ceabbc83ec upstream.
There is an allocation with GFP_KERNEL flag in mos7720_write(),
while it may be called from interrupt context.
Follow-up for commit 191252837626 ("USB: kobil_sct: fix non-atomic
allocation in write path")
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/serial/mos7720.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -1252,7 +1252,7 @@ static int mos7720_write(struct tty_stru
if (urb->transfer_buffer == NULL) {
urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE,
- GFP_KERNEL);
+ GFP_ATOMIC);
if (!urb->transfer_buffer)
goto exit;
}
Patches currently in stable-queue which might be from khoroshilov@ispras.ru are
queue-4.4/usb-serial-mos7840-fix-non-atomic-allocation-in-write-path.patch
queue-4.4/usb-serial-mos7720-fix-non-atomic-allocation-in-write-path.patch
reply other threads:[~2016-09-05 14:25 UTC|newest]
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