diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2016-04-07 08:21:20 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2016-04-20 23:07:33 -0700 |
| commit | 540a5d859010a239a99aba02a9fed7b255c0033e (patch) | |
| tree | 46ac30ed48a61aa6723be7b5003b43f41adfc272 /drivers/net/ethernet/intel/fm10k/fm10k_main.c | |
| parent | 11ec36a974f59c99e8a4ff7040026569a43ab567 (diff) | |
fm10k: fix possible null pointer deref after kcalloc
When writing a new default redirection table, we needed to populate
a new RSS table using ethtool_rxfh_indir_default. We populated this
table into a region of memory allocated using kcalloc, but never checked
this for NULL. Fix this by moving the default table generation into
fm10k_write_reta. If this function is passed a table, use it. Otherwise,
generate the default table using ethtool_rxfh_indir_default, 4 at at
time.
Fixes: 0ea7fae44094 ("fm10k: use ethtool_rxfh_indir_default for default redirection table")
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/fm10k/fm10k_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/fm10k/fm10k_main.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c b/drivers/net/ethernet/intel/fm10k/fm10k_main.c index 58092e523bbe..aca3e4762da7 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c @@ -1927,8 +1927,7 @@ static void fm10k_assign_rings(struct fm10k_intfc *interface) static void fm10k_init_reta(struct fm10k_intfc *interface) { u16 i, rss_i = interface->ring_feature[RING_F_RSS].indices; - struct net_device *netdev = interface->netdev; - u32 reta, *indir; + u32 reta; /* If the Rx flow indirection table has been configured manually, we * need to maintain it when possible. @@ -1953,16 +1952,7 @@ static void fm10k_init_reta(struct fm10k_intfc *interface) } repopulate_reta: - indir = kcalloc(fm10k_get_reta_size(netdev), - sizeof(indir[0]), GFP_KERNEL); - - /* generate redirection table using the default kernel policy */ - for (i = 0; i < fm10k_get_reta_size(netdev); i++) - indir[i] = ethtool_rxfh_indir_default(i, rss_i); - - fm10k_write_reta(interface, indir); - - kfree(indir); + fm10k_write_reta(interface, NULL); } /** |