[PATCH 4.2 011/110] iwlwifi: mvm: flush fw_dump_wk when mvm fails to start

From: Greg Kroah-Hartman
Date: Fri Nov 06 2015 - 15:54:36 EST

4.2-stable review patch. If anyone has any objections, please let me know.


From: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>

commit dbf73d4a8bb8f4e1d1f3edd3be825692279e2ef3 upstream.

FW dump may be triggered when running init ucode, for example due to a
sysassert. In this case fw_dump_wk may run after mvm is freed, resulting
in a kernel panic.
Fix it by flushing the work.

Fixes: 01b988a708af ("iwlwifi: mvm: allow to collect debug data when restart is disabled")
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/net/wireless/iwlwifi/mvm/ops.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/net/wireless/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/iwlwifi/mvm/ops.c
@@ -582,6 +582,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *
+ flush_delayed_work(&mvm->fw_dump_wk);
if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/