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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2021-12-15 17:37:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-22 11:32:44 +0300 |
| commit | 9a77c02d1d2147a76bd187af1bf5a34242662d12 (patch) | |
| tree | 58f5988ea4a2f2a26e003adaa432ed816f835b52 /drivers | |
| parent | 0b4a5d1e15ce72f69be48f38dc0401dab890ae0f (diff) | |
| download | linux-9a77c02d1d2147a76bd187af1bf5a34242662d12.tar.xz | |
sfc_ef100: potential dereference of null pointer
[ Upstream commit 407ecd1bd726f240123f704620d46e285ff30dd9 ]
The return value of kmalloc() needs to be checked.
To avoid use in efx_nic_update_stats() in case of the failure of alloc.
Fixes: b593b6f1b492 ("sfc_ef100: statistics gathering")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef100_nic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c index 518268ce2064..d35cafd422b1 100644 --- a/drivers/net/ethernet/sfc/ef100_nic.c +++ b/drivers/net/ethernet/sfc/ef100_nic.c @@ -609,6 +609,9 @@ static size_t ef100_update_stats(struct efx_nic *efx, ef100_common_stat_mask(mask); ef100_ethtool_stat_mask(mask); + if (!mc_stats) + return 0; + efx_nic_copy_stats(efx, mc_stats); efx_nic_update_stats(ef100_stat_desc, EF100_STAT_COUNT, mask, stats, mc_stats, false); |