"deadlock"

[bzfbd]

Hit a "deadklock".

I assume it's more likely that the firmware went kaboom after this
athp0: ath10k_htt_rx_delba: received DELBA, couldn't find node!
and we didn't move anymore?

db> trace 100166
Tracing pid 0 tid 100166 td 0xfffffe003b99be00
sched_switch() at sched_switch+0x5b2/frame 0xfffffe003c0098e0
mi_switch() at mi_switch+0x155/frame 0xfffffe003c009900
__mtx_lock_sleep() at __mtx_lock_sleep+0x1cc/frame 0xfffffe003c009990
__mtx_lock_flags() at __mtx_lock_flags+0xe5/frame 0xfffffe003c0099e0
ath10k_wait_for_peer_common() at ath10k_wait_for_peer_common+0xe3/frame 0xfffffe003c009a40
athp_peer_free() at athp_peer_free+0xfb/frame 0xfffffe003c009a80
athp_node_free_cb() at athp_node_free_cb+0x84/frame 0xfffffe003c009ac0
athp_taskq_task() at athp_taskq_task+0x2fe/frame 0xfffffe003c009b00
taskqueue_run_locked() at taskqueue_run_locked+0xaa/frame 0xfffffe003c009b80
taskqueue_thread_loop() at taskqueue_thread_loop+0x94/frame 0xfffffe003c009bb0
fork_exit() at fork_exit+0x80/frame 0xfffffe003c009bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe003c009bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
db> trace 100160
Tracing pid 12 tid 100160 td 0xfffffe003b98f700
sched_switch() at sched_switch+0x5b2/frame 0xfffffe003b1e9810
mi_switch() at mi_switch+0x155/frame 0xfffffe003b1e9830
__mtx_lock_sleep() at __mtx_lock_sleep+0x1cc/frame 0xfffffe003b1e98c0
__mtx_lock_flags() at __mtx_lock_flags+0xe5/frame 0xfffffe003b1e9910
ath10k_get_arvif() at ath10k_get_arvif+0x2e/frame 0xfffffe003b1e9940
ath10k_htt_t2h_msg_handler() at ath10k_htt_t2h_msg_handler+0x374/frame 0xfffffe003b1e99b0
ath10k_htc_rx_completion_handler() at ath10k_htc_rx_completion_handler+0x203/frame 0xfffffe003b1e9a40
ath10k_pci_ce_recv_data() at ath10k_pci_ce_recv_data+0xff/frame 0xfffffe003b1e9ac0
ath10k_ce_per_engine_service() at ath10k_ce_per_engine_service+0x8c/frame 0xfffffe003b1e9b00
ath10k_pci_ce_tasklet() at ath10k_pci_ce_tasklet+0x55/frame 0xfffffe003b1e9b20
ithread_loop() at ithread_loop+0x279/frame 0xfffffe003b1e9bb0
fork_exit() at fork_exit+0x80/frame 0xfffffe003b1e9bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe003b1e9bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
db> trace 100161
Tracing pid 12 tid 100161 td 0xfffffe003b98f000
sched_switch() at sched_switch+0x5b2/frame 0xfffffe003b1ee540
mi_switch() at mi_switch+0x155/frame 0xfffffe003b1ee560
__mtx_lock_sleep() at __mtx_lock_sleep+0x1cc/frame 0xfffffe003b1ee5f0
__mtx_lock_flags() at __mtx_lock_flags+0xe5/frame 0xfffffe003b1ee640
ath10k_get_arvif() at ath10k_get_arvif+0x2e/frame 0xfffffe003b1ee670
ath10k_wmi_event_host_swba() at ath10k_wmi_event_host_swba+0x1a9/frame 0xfffffe003b1ee910
ath10k_wmi_10_2_op_rx() at ath10k_wmi_10_2_op_rx+0x2b9/frame 0xfffffe003b1ee9b0
ath10k_htc_rx_completion_handler() at ath10k_htc_rx_completion_handler+0x203/frame 0xfffffe003b1eea40
ath10k_pci_ce_recv_data() at ath10k_pci_ce_recv_data+0xff/frame 0xfffffe003b1eeac0
ath10k_ce_per_engine_service() at ath10k_ce_per_engine_service+0x8c/frame 0xfffffe003b1eeb00
ath10k_pci_ce_tasklet() at ath10k_pci_ce_tasklet+0x55/frame 0xfffffe003b1eeb20
ithread_loop() at ithread_loop+0x279/frame 0xfffffe003b1eebb0
fork_exit() at fork_exit+0x80/frame 0xfffffe003b1eebf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe003b1eebf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---

[erikarn]

Do you have any LOR info before that?

So I know there are a few LORs that need squishing still. :-)

A bunch of firmware messages do come by when we delete a node; those notifications shouldn't hurt. Ideally we'd go through the machinery of issuing delba and ensure crypto key deletion before we issue the peer teardown, but net80211 isn't quite ready for that.

[bzfbd]

No, no LOR before that.