From: Peter Hurley <peter@hurleysoftware.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux1394-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org,
Stefan Richter <stefanr@s5r6.in-berlin.de>,
Peter Hurley <peter@hurleysoftware.com>
Subject: [PATCH 09/11] staging/fwserial: add diagnostic for buffer overflow
Date: Mon, 28 Jan 2013 22:34:43 -0500 [thread overview]
Message-ID: <1359430485-5301-9-git-send-email-peter@hurleysoftware.com> (raw)
In-Reply-To: <1359430485-5301-1-git-send-email-peter@hurleysoftware.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/staging/fwserial/fwserial.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index 912b17a..912ab77 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -569,8 +569,11 @@ 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;
--
1.8.1.1
next prev parent reply other threads:[~2013-01-29 3:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-29 3:34 [PATCH 01/11] staging/fwserial: Only reset port status for attached peers Peter Hurley
2013-01-29 3:34 ` [PATCH 02/11] staging/fwserial: Release port regardless of unplug response code Peter Hurley
2013-01-29 3:34 ` [PATCH 03/11] staging/fwserial: Fix sparse build warnings Peter Hurley
2013-01-29 3:34 ` [PATCH 04/11] staging/fwserial: Create loop device the 'tty' way Peter Hurley
2013-01-29 3:34 ` [PATCH 05/11] staging/fwserial: Cleanup /proc/tty/driver/ file Peter Hurley
2013-01-29 3:34 ` [PATCH 06/11] staging/fwserial: Factor unstable stats/debug/status info to debugfs Peter Hurley
2013-01-29 3:34 ` [PATCH 07/11] staging/fwserial: Don't use deprecated alloc_tty_driver() Peter Hurley
2013-01-29 3:34 ` [PATCH 08/11] staging/fwserial: Remove reference to removed constant Peter Hurley
2013-01-29 3:34 ` Peter Hurley [this message]
2013-01-29 3:34 ` [PATCH 10/11] staging/fwserial: Fix premature unthrottle Peter Hurley
2013-01-30 4:29 ` Greg Kroah-Hartman
2013-01-30 13:11 ` Peter Hurley
2013-01-30 13:32 ` Greg Kroah-Hartman
2013-01-30 13:37 ` Peter Hurley
2013-01-30 16:25 ` Greg Kroah-Hartman
2013-01-29 3:34 ` [PATCH 11/11] staging/fwserial: Remove unneeded push work Peter Hurley
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