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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2016-08-12 01:05:08 +0300 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-09-12 09:30:54 -0400 |
| commit | 9f4cc3bef0c5bbbec25390606b629821a953662e (patch) | |
| tree | f4d0e7c18d73efa49b4d4db97d7d873fb87099b4 | |
| parent | 24628b51d97ff55e9a39ed87ea631af29604112f (diff) | |
| download | lwn-9f4cc3bef0c5bbbec25390606b629821a953662e.tar.gz lwn-9f4cc3bef0c5bbbec25390606b629821a953662e.zip | |
USB: serial: mos7720: fix non-atomic allocation in write path
[ Upstream commit 5a5a1d614287a647b36dff3f40c2b0ceabbc83ec ]
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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | drivers/usb/serial/mos7720.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 4f70df33975a..9a0c610d85a9 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1239,7 +1239,7 @@ static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, if (urb->transfer_buffer == NULL) { urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, - GFP_KERNEL); + GFP_ATOMIC); if (!urb->transfer_buffer) goto exit; } |