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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Mike Marshall <hubcap@omnibond.com>,
	Martin Brandenburg <martin@omnibond.com>
Subject: [PATCH 4.10 16/29] orangefs: fix buffer size mis-match between kernel space and user space.
Date: Sun, 16 Apr 2017 10:04:33 +0200	[thread overview]
Message-ID: <20170416080228.584930961@linuxfoundation.org> (raw)
In-Reply-To: <20170416080227.593797230@linuxfoundation.org>

4.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mike Marshall <hubcap@omnibond.com>

commit eb68d0324dc4d88ab0d6159bdcd98c247a3a8954 upstream.

The deamon through which the kernel module communicates with the userspace
part of Orangefs, the "client-core", sends initialization data to the
kernel module with ioctl. The initialization data was built by the
client-core in a 2k buffer and copy_from_user'd into a 1k buffer
in the kernel module. When more than 1k of initialization data needed
to be sent, some was lost, reducing the usability of the control by which
debug levels are set. This patch sets the kernel side buffer to 2K to
match the userspace side...

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/orangefs/orangefs-dev-proto.h |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/orangefs/orangefs-dev-proto.h
+++ b/fs/orangefs/orangefs-dev-proto.h
@@ -50,8 +50,7 @@
  * Misc constants. Please retain them as multiples of 8!
  * Otherwise 32-64 bit interactions will be messed up :)
  */
-#define ORANGEFS_MAX_DEBUG_STRING_LEN	0x00000400
-#define ORANGEFS_MAX_DEBUG_ARRAY_LEN	0x00000800
+#define ORANGEFS_MAX_DEBUG_STRING_LEN	0x00000800
 
 /*
  * The maximum number of directory entries in a single request is 96.

  parent reply	other threads:[~2017-04-16  8:06 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-16  8:04 [PATCH 4.10 00/29] 4.10.11-stable review Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 01/29] drm/i915: Fix forcewake active domain tracking Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 03/29] drm/i915/fbdev: Stop repeating tile configuration on stagnation Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 04/29] drm/i915: Squelch any ktime/jiffie rounding errors for wait-ioctl Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 06/29] drm/i915: Store a permanent error in obj->mm.pages Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 11/29] drm/i915: Drop support for I915_EXEC_CONSTANTS_* execbuf parameters Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 12/29] drm/i915: Stop using RP_DOWN_EI on Baytrail Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 13/29] drm/i915: Avoid rcu_barrier() from reclaim paths (shrinker) Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 15/29] orangefs: Dan Carpenter influenced cleanups Greg Kroah-Hartman
2017-04-16  8:04 ` Greg Kroah-Hartman [this message]
2017-04-16  8:04 ` [PATCH 4.10 17/29] nfs: flexfiles: fix kernel OOPS if MDS returns unsupported DS type Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 18/29] rt2x00usb: fix anchor initialization Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 19/29] rt2x00usb: do not anchor rx and tx urbs Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 20/29] MIPS: Introduce irq_stack Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 21/29] MIPS: Stack unwinding while on IRQ stack Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 22/29] MIPS: Only change $28 to thread_info if coming from user mode Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 23/29] MIPS: Switch to the irq_stack in interrupts Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 24/29] MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 25/29] MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch Greg Kroah-Hartman
2017-04-16  8:04 ` [PATCH 4.10 28/29] net/packet: fix overflow in check for priv area size Greg Kroah-Hartman
2017-04-16 21:29 ` [PATCH 4.10 00/29] 4.10.11-stable review Guenter Roeck
2017-04-17 18:25 ` Shuah Khan
2017-04-18  4:58   ` Greg Kroah-Hartman
     [not found] ` <58f373af.01841c0a.9440c.0ce2@mx.google.com>
2017-04-17 18:51   ` Shuah Khan

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