Patch "misc: pci_endpoint_test: Avoid triggering a BUG()" has been added to the 4.14-stable tree

Patch "misc: pci_endpoint_test: Avoid triggering a BUG()" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    misc: pci_endpoint_test: Avoid triggering a BUG()

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     misc-pci_endpoint_test-avoid-triggering-a-bug.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Mon Dec 18 13:28:59 CET 2017
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat, 30 Sep 2017 11:16:51 +0300
Subject: misc: pci_endpoint_test: Avoid triggering a BUG()

From: Dan Carpenter <dan.carpenter@oracle.com>


[ Upstream commit 846df244ebefbc9f7b91e9ae7a5e5a2e69fb4772 ]

If you call ida_simple_remove(&pci_endpoint_test_ida, id) with a
negative "id" then it triggers an immediate BUG_ON().  Let's not allow
that.

Fixes: 2c156ac71c6b ("misc: Add host side PCI driver for PCI test function device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/misc/pci_endpoint_test.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -590,6 +590,8 @@ static void pci_endpoint_test_remove(str
 
 	if (sscanf(misc_device->name, DRV_MODULE_NAME ".%d", &id) != 1)
 		return;
+	if (id < 0)
+		return;
 
 	misc_deregister(&test->miscdev);
 	ida_simple_remove(&pci_endpoint_test_ida, id);


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.14/scsi-bfa-integer-overflow-in-debugfs.patch
queue-4.14/fbdev-controlfb-add-missing-modes-to-fix-out-of-bounds-access.patch
queue-4.14/misc-pci_endpoint_test-avoid-triggering-a-bug.patch