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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 <wuninsu@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Insu Yun 2015-12-29 17:20:11 -05:00 committed by David S. Miller
parent b77357b692
commit 3934aa4c1f
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c
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@ -295,6 +295,10 @@ struct clip_tbl *t4_init_clip_tbl(unsigned int clipt_start,
INIT_LIST_HEAD(&ctbl->hash_list[i]); INIT_LIST_HEAD(&ctbl->hash_list[i]);
cl_list = t4_alloc_mem(clipt_size*sizeof(struct clip_entry)); 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; ctbl->cl_list = (void *)cl_list;
for (i = 0; i < clipt_size; i++) { for (i = 0; i < clipt_size; i++) {