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staging/rdma/hfi1: Fix memory leaks

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Fix 3 memory leaks reported by the LeakCheck tool in the KEDR framework.

The following resources were allocated memory during their respective
initializations but not freed during cleanup:
1. SDMA map elements
2. PIO map elements
3. HW send context to SW index map

This patch fixes the memory leaks by freeing the allocated memory in the
cleanup path.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Jubin John 2016-02-26 13:33:33 -08:00 committed by Doug Ledford
parent 409b146225
commit 79d0c08880
3 changed files with 4 additions and 2 deletions
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2
drivers/staging/rdma/hfi1/init.c
View File

@ -1324,6 +1324,8 @@ static void cleanup_device_data(struct hfi1_devdata *dd)
dd->num_send_contexts = 0;
kfree(dd->send_contexts);
dd->send_contexts = NULL;
kfree(dd->hw_to_sw);
dd->hw_to_sw = NULL;
kfree(dd->boardname);
vfree(dd->events);
vfree(dd->status);

2
drivers/staging/rdma/hfi1/pio.c
View File

@ -1881,7 +1881,7 @@ void free_pio_map(struct hfi1_devdata *dd)
/* Free PIO map if allocated */
if (rcu_access_pointer(dd->pio_map)) {
spin_lock_irq(&dd->pio_map_lock);
kfree(rcu_access_pointer(dd->pio_map));
pio_map_free(rcu_access_pointer(dd->pio_map));
RCU_INIT_POINTER(dd->pio_map, NULL);
spin_unlock_irq(&dd->pio_map_lock);
synchronize_rcu();

2
drivers/staging/rdma/hfi1/sdma.c
View File

@ -966,7 +966,7 @@ static void sdma_clean(struct hfi1_devdata *dd, size_t num_engines)
sde->tx_ring = NULL;
}
spin_lock_irq(&dd->sde_map_lock);
kfree(rcu_access_pointer(dd->sdma_map));
sdma_map_free(rcu_access_pointer(dd->sdma_map));
RCU_INIT_POINTER(dd->sdma_map, NULL);
spin_unlock_irq(&dd->sde_map_lock);
synchronize_rcu();