diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2016-01-05 10:35:21 +0300 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2016-01-07 20:01:32 +0300 |
| commit | 9fb7807ce7f21cbab2b13db0183f7f71a75add5e (patch) | |
| tree | 1745d5804dc8d12e4f1967905714b5fadcc07d59 /drivers/net/wireless | |
| parent | a80c7a696610c537fd6e61489be9da0a995fc880 (diff) | |
| download | linux-9fb7807ce7f21cbab2b13db0183f7f71a75add5e.tar.xz | |
iwlwifi: mvm: fix memory leaks in error paths upon fw error dump
When iwl_mvm_fw_error_dump fails, it needs to clear the
state in mvm, which includes:
* clear IWL_MVM_STATUS_DUMPING_FW_LOG
* set mvm->fw_dump_trig to NULL
* free the description
While at it, remove a NULL check in
iwl_mvm_free_fw_dump_desc since kfree is NULL safe.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c index b3bc2128d81b..0813f8184e10 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c @@ -270,8 +270,7 @@ static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm, void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm) { - if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert || - !mvm->fw_dump_desc) + if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert) return; kfree(mvm->fw_dump_desc); @@ -441,7 +440,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) /* there's no point in fw dump if the bus is dead */ if (test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { IWL_ERR(mvm, "Skip fw error dump since bus is dead\n"); - return; + goto out; } if (mvm->fw_dump_trig && @@ -450,7 +449,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL); if (!fw_error_dump) - return; + goto out; /* SRAM - include stack CCM if driver knows the values for it */ if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) { @@ -550,8 +549,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) dump_file = vzalloc(file_len); if (!dump_file) { kfree(fw_error_dump); - iwl_mvm_free_fw_dump_desc(mvm); - return; + goto out; } fw_error_dump->op_mode_ptr = dump_file; @@ -590,8 +588,6 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc, sizeof(*dump_trig) + mvm->fw_dump_desc->len); - /* now we can free this copy */ - iwl_mvm_free_fw_dump_desc(mvm); dump_data = iwl_fw_error_next_data(dump_data); } @@ -677,6 +673,8 @@ dump_trans_data: dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0, GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump); +out: + iwl_mvm_free_fw_dump_desc(mvm); mvm->fw_dump_trig = NULL; clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status); } |