From 3934aa4c1f7f4ccdff25f530b0e37d776ac453e2 Mon Sep 17 00:00:00 2001 From: Insu Yun Date: Tue, 29 Dec 2015 17:20:11 -0500 Subject: [PATCH] cxgb4: correctly handling failed allocation Since t4_alloc_mem can be failed in memory pressure, if not properly handled, NULL dereference could be happened. Signed-off-by: Insu Yun Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c b/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c index c308429dd9c7..11dd91e4db56 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c +++ b/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c @@ -295,6 +295,10 @@ struct clip_tbl *t4_init_clip_tbl(unsigned int clipt_start, INIT_LIST_HEAD(&ctbl->hash_list[i]); cl_list = t4_alloc_mem(clipt_size*sizeof(struct clip_entry)); + if (!cl_list) { + t4_free_mem(ctbl); + return NULL; + } ctbl->cl_list = (void *)cl_list; for (i = 0; i < clipt_size; i++) {