From 528051746b24dd214883db11bcbb0e667f60447d Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Tue, 14 Oct 2008 14:05:36 -0700 Subject: [PATCH] IB/mad: Use krealloc() to resize snoop table Use krealloc() instead of kmalloc() followed by memcpy() when resizing the MAD module's snoop table. Also put parentheses around the new table size to avoid calculating the wrong size to allocate, which fixes a bug pointed out by Haven Hash . Signed-off-by: Roland Dreier --- drivers/infiniband/core/mad.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 49c45feccd5b..5c54fc2350be 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -406,19 +406,15 @@ static int register_snoop_agent(struct ib_mad_qp_info *qp_info, if (i == qp_info->snoop_table_size) { /* Grow table. */ - new_snoop_table = kmalloc(sizeof mad_snoop_priv * - qp_info->snoop_table_size + 1, - GFP_ATOMIC); + new_snoop_table = krealloc(qp_info->snoop_table, + sizeof mad_snoop_priv * + (qp_info->snoop_table_size + 1), + GFP_ATOMIC); if (!new_snoop_table) { i = -ENOMEM; goto out; } - if (qp_info->snoop_table) { - memcpy(new_snoop_table, qp_info->snoop_table, - sizeof mad_snoop_priv * - qp_info->snoop_table_size); - kfree(qp_info->snoop_table); - } + qp_info->snoop_table = new_snoop_table; qp_info->snoop_table_size++; } -- 2.39.5