From: Aleksandr Mishin amishin@t-argos.ru
[ Upstream commit 62fdaf9e8056e9a9e6fe63aa9c816ec2122d60c6 ]
In ice_sched_add_root_node() and ice_sched_add_node() there are calls to devm_kcalloc() in order to allocate memory for array of pointers to 'ice_sched_node' structure. But incorrect types are used as sizeof() arguments in these calls (structures instead of pointers) which leads to over allocation of memory.
Adjust over allocation of memory by correcting types in devm_kcalloc() sizeof() arguments.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Reviewed-by: Przemek Kitszel przemyslaw.kitszel@intel.com Signed-off-by: Aleksandr Mishin amishin@t-argos.ru Reviewed-by: Simon Horman horms@kernel.org Tested-by: Pucha Himasekhar Reddy himasekharx.reddy.pucha@intel.com (A Contingent worker at Intel) Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/ice/ice_sched.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_sched.c b/drivers/net/ethernet/intel/ice/ice_sched.c index ecf8f5d602921..6ca13c5dcb14e 100644 --- a/drivers/net/ethernet/intel/ice/ice_sched.c +++ b/drivers/net/ethernet/intel/ice/ice_sched.c @@ -28,9 +28,8 @@ ice_sched_add_root_node(struct ice_port_info *pi, if (!root) return -ENOMEM;
- /* coverity[suspicious_sizeof] */ root->children = devm_kcalloc(ice_hw_to_dev(hw), hw->max_children[0], - sizeof(*root), GFP_KERNEL); + sizeof(*root->children), GFP_KERNEL); if (!root->children) { devm_kfree(ice_hw_to_dev(hw), root); return -ENOMEM; @@ -186,10 +185,9 @@ ice_sched_add_node(struct ice_port_info *pi, u8 layer, if (!node) return -ENOMEM; if (hw->max_children[layer]) { - /* coverity[suspicious_sizeof] */ node->children = devm_kcalloc(ice_hw_to_dev(hw), hw->max_children[layer], - sizeof(*node), GFP_KERNEL); + sizeof(*node->children), GFP_KERNEL); if (!node->children) { devm_kfree(ice_hw_to_dev(hw), node); return -ENOMEM;