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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2016-08-12 01:05:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-07 08:34:54 +0200 |
| commit | 48e477e5a4492ed67a19b8c481defa8828da0c05 (patch) | |
| tree | c2647bea214b9bd4e4ef9a4f9e61f36f55b55989 | |
| parent | 8951e13689dfb782eea05d9431489d8d5bcfad97 (diff) | |
| download | lwn-48e477e5a4492ed67a19b8c481defa8828da0c05.tar.gz lwn-48e477e5a4492ed67a19b8c481defa8828da0c05.zip | |
USB: serial: mos7720: fix non-atomic allocation in write path
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>
| -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 5608af4a369d..de9992b492b0 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1252,7 +1252,7 @@ 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; } |