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Commit c2e27e16 authored by Johannes Berg's avatar Johannes Berg Committed by Luca Coelho
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iwlwifi: mvm: properly check for transport data in dump 



When copying from vmalloc'ed memory to the SG list, don't crash
if the transport didn't provide any data.

Fixes: 7e62a699 ("iwlwifi: mvm: use dev_coredumpsg()")
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent 5bdaa0ef

drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.c

+6 −5
Original line number Diff line number Diff line
@@ -848,6 +848,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) 
				     sg_nents(sg_dump_data),

				     fw_error_dump->op_mode_ptr,

				     fw_error_dump->op_mode_len, 0);

		if (fw_error_dump->trans_ptr)

			sg_pcopy_from_buffer(sg_dump_data,

					     sg_nents(sg_dump_data),

					     fw_error_dump->trans_ptr->data,