diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2013-01-28 22:34:43 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-29 23:28:45 -0500 |
| commit | ef34dd184d58824f1cde7402afa8ba2a957029d9 (patch) | |
| tree | a9e023a19c23f99c85223530bcf689e452ee7ea7 | |
| parent | 2257d1224fa93875d472c21195b7817b0d7bcc50 (diff) | |
staging/fwserial: add diagnostic for buffer overflow
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/fwserial/fwserial.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index 258ac35fb5af..fe9a68854452 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -577,8 +577,11 @@ static int fwtty_buffer_rx(struct fwtty_port *port, unsigned char *d, size_t n) struct buffered_rx *buf; size_t size = (n + sizeof(struct buffered_rx) + 0xFF) & ~0xFF; - if (port->buffered + n > HIGH_WATERMARK) + if (port->buffered + n > HIGH_WATERMARK) { + fwtty_err_ratelimited(port, "overflowed rx buffer: buffered: %d new: %ld wtrmk: %d", + port->buffered, n, HIGH_WATERMARK); return 0; + } buf = kmalloc(size, GFP_ATOMIC); if (!buf) return 0; |