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 *
ieee80211_unregister_hw(mvm->hw);
iwl_mvm_leds_exit(mvm);
out_free:
+ flush_delayed_work(&mvm->fw_dump_wk);
iwl_phy_db_free(mvm->phy_db);
kfree(mvm->scan_cmd);
if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
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