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Date: Wed, 16 Mar 2016 16:06:16 +0800 From: lizf@...nel.org To: stable@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Ben Hutchings <ben@...adent.org.uk>, "David S. Miller" <davem@...emloft.net>, Zefan Li <lizefan@...wei.com> Subject: [PATCH 3.4 082/107] isdn_ppp: Add checks for allocation failure in isdn_ppp_open() From: Ben Hutchings <ben@...adent.org.uk> 3.4.111-rc1 review patch. If anyone has any objections, please let me know. ------------------ commit 0baa57d8dc32db78369d8b5176ef56c5e2e18ab3 upstream. Compile-tested only. Signed-off-by: Ben Hutchings <ben@...adent.org.uk> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Zefan Li <lizefan@...wei.com> --- 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 a1e7601..ee41751 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; -- 1.9.1
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