netdev - [PATCH v2 net 1/2] isdn_ppp: Add checks for allocation failure in isdn_ppp

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Message-ID: <20151101162123.GA9478@decadent.org.uk>
Date:	Sun, 1 Nov 2015 16:21:24 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	David Miller <davem@...emloft.net>
Cc:	Karsten Keil <isdn@...ux-pingi.de>, linux-ppp@...r.kernel.org,
	netdev <netdev@...r.kernel.org>
Subject: [PATCH v2 net 1/2] isdn_ppp: Add checks for allocation failure in
 isdn_ppp_open()

Compile-tested only.

Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
Re-sent using mutt since Evolution 3.18 mangles patches.

Ben.

 drivers/isdn/i4l/isdn_ppp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index c4198fa..86f9abe 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -301,6 +301,8 @@ isdn_ppp_open(int min, struct file *file)
 	is->compflags = 0;
 
 	is->reset = isdn_ppp_ccp_reset_alloc(is);
+	if (!is->reset)
+		return -ENOMEM;
 
 	is->lp = NULL;
 	is->mp_seqno = 0;       /* MP sequence number */
@@ -320,6 +322,10 @@ isdn_ppp_open(int min, struct file *file)
 	 * VJ header compression init
 	 */
 	is->slcomp = slhc_init(16, 16);	/* not necessary for 2. link in bundle */
+	if (!is->slcomp) {
+		isdn_ppp_ccp_reset_free(is);
+		return -ENOMEM;
+	}
 #endif
 #ifdef CONFIG_IPPP_FILTER
 	is->pass_filter = NULL;


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