[PATCH AUTOSEL 5.7 074/274] ice: Fix for memory leaks and modify ICE_FREE_CQ_BUFS

Sasha Levin
2020-06-08T23:08:40Z

From: Surabhi Boob <surabhi.boob@intel.com>

[ Upstream commit 68d270783742783f96e89ef92ac24ab3c7fb1d31 ]

Handle memory leaks during control queue initialization and
buffer allocation failures. The macro ICE_FREE_CQ_BUFS is modified to
re-use for this fix.

Signed-off-by: Surabhi Boob <surabhi.boob@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/ice/ice_controlq.c | 49 +++++++++++--------
1 file changed, 28 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.c b/drivers/net/ethernet/intel/ice/ice_controlq.c
index dd946866d7b8..cc29a16f41f7 100644
--- a/drivers/net/ethernet/intel/ice/ice_controlq.c
+++ b/drivers/net/ethernet/intel/ice/ice_controlq.c
@@ -199,7 +199,9 @@ ice_alloc_rq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
cq->rq.r.rq_bi[i].pa = 0;
cq->rq.r.rq_bi[i].size = 0;
}
+ cq->rq.r.rq_bi = NULL;
devm_kfree(ice_hw_to_dev(hw), cq->rq.dma_head);
+ cq->rq.dma_head = NULL;

return ICE_ERR_NO_MEMORY;
}
@@ -245,7 +247,9 @@ ice_alloc_sq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
cq->sq.r.sq_bi[i].pa = 0;
cq->sq.r.sq_bi[i].size = 0;
}
+ cq->sq.r.sq_bi = NULL;
devm_kfree(ice_hw_to_dev(hw), cq->sq.dma_head);
+ cq->sq.dma_head = NULL;

return ICE_ERR_NO_MEMORY;
}
@@ -304,6 +308,28 @@ ice_cfg_rq_regs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
return 0;
}

+#define ICE_FREE_CQ_BUFS(hw, qi, ring) \
+do { \
+ int i; \
+ /* free descriptors */ \
+ if ((qi)->ring.r.ring##_bi) \
+ for (i = 0; i < (qi)->num_##ring##_entries; i++) \
+ if ((qi)->ring.r.ring##_bi[i].pa) { \
+ dmam_free_coherent(ice_hw_to_dev(hw), \
+ (qi)->ring.r.ring##_bi[i].size, \
+ (qi)->ring.r.ring##_bi[i].va, \
+ (qi)->ring.r.ring##_bi[i].pa); \
+ (qi)->ring.r.ring##_bi[i].va = NULL;\
+ (qi)->ring.r.ring##_bi[i].pa = 0;\
+ (qi)->ring.r.ring##_bi[i].size = 0;\
+ } \
+ /* free the buffer info list */ \
+ if ((qi)->ring.cmd_buf) \
+ devm_kfree(ice_hw_to_dev(hw), (qi)->ring.cmd_buf); \
+ /* free DMA head */ \
+ devm_kfree(ice_hw_to_dev(hw), (qi)->ring.dma_head); \
+} while (0)
+
/**
* ice_init_sq - main initialization routine for Control ATQ
* @hw: pointer to the hardware structure
@@ -357,6 +383,7 @@ static enum ice_status ice_init_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
goto init_ctrlq_exit;

init_ctrlq_free_rings:
+ ICE_FREE_CQ_BUFS(hw, cq, sq);
ice_free_cq_ring(hw, &cq->sq);

init_ctrlq_exit:
@@ -416,33 +443,13 @@ static enum ice_status ice_init_rq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
goto init_ctrlq_exit;

init_ctrlq_free_rings:
+ ICE_FREE_CQ_BUFS(hw, cq, rq);
ice_free_cq_ring(hw, &cq->rq);

init_ctrlq_exit:
return ret_code;
}

-#define ICE_FREE_CQ_BUFS(hw, qi, ring) \
-do { \
- int i; \
- /* free descriptors */ \
- for (i = 0; i < (qi)->num_##ring##_entries; i++) \
- if ((qi)->ring.r.ring##_bi[i].pa) { \
- dmam_free_coherent(ice_hw_to_dev(hw), \
- (qi)->ring.r.ring##_bi[i].size,\
- (qi)->ring.r.ring##_bi[i].va,\
- (qi)->ring.r.ring##_bi[i].pa);\
- (qi)->ring.r.ring##_bi[i].va = NULL; \
- (qi)->ring.r.ring##_bi[i].pa = 0; \
- (qi)->ring.r.ring##_bi[i].size = 0; \
- } \
- /* free the buffer info list */ \
- if ((qi)->ring.cmd_buf) \
- devm_kfree(ice_hw_to_dev(hw), (qi)->ring.cmd_buf); \
- /* free DMA head */ \
- devm_kfree(ice_hw_to_dev(hw), (qi)->ring.dma_head); \
-} while (0)
-
/**
* ice_shutdown_sq - shutdown the Control ATQ
* @hw: pointer to the hardware structure
--
2.25.1