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sfc_ef100: potential dereference of null pointer

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[ Upstream commit 407ecd1bd7 ]

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: b593b6f1b4 ("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>
This commit is contained in:
Jiasheng Jiang
2021-12-15 22:37:31 +08:00
committed by Greg Kroah-Hartman
parent 7da349f07e
commit 734a3f3106
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/sfc/ef100_nic.c
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@@ -597,6 +597,9 @@ 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);