On 09/22/2016 01:59 PM, Rafał Miłecki wrote:
And again...

I decided to focus on brcmf_flowring_delete a bit more.

As I can see flowrings are created and removed from time to time, in most cases
they are empty when being deleted. When they are not, things go wrong. In below
log you can see brcmfmac removing flowring that got 8 skb packets.

First some summary, of what was already partially noticed in previous e-mail:
1) brcmf_flowring_delete calls brcmu_pkt_buf_free_skb directly bypassing
   brcmf_txfinalize. It means tracing 802.1x packets and counting TX errors is
   broken.
2) After freeing skb (as the result of brcmf_flowring_delete) there will still
   an IRQ, MSGBUF_TYPE_TX_STATUS and call to the brcmf_txfinalize. That's
   definitely unexpected as brcmf_txfinalize will be operating on skb that was
   already freed.

Now, there is something new that looks even worse. Sometimes brcmf_txfinalize
may be called multiple times for the same skb! Take a close look at my log.
It was called twice for skb c64a5a80. Twice for c64a5480. Twice for c64a5f00.
Then Linux/device rebooted itself due to amount of console messages.

I got the same problem again, but this time there was only 1 skb in my flowring.
That resulted in less serial console messages and no reboot.

It doesn't look good. brcmf_txfinalize was called 11 times after deleting
flowring. Everytime it was working with the same skb that was already freed.

After my DIR-885L and brcmfmac managed to survive that, my smartphone remained
connected but I couldn't contact it (no reply to ping). I had to reconnect and
then it was back OK.

[ 2927.500112] brcmfmac: CONSOLE: 029651.820 wl0: Proxy STA 78:d6:f0:9b:ba:bc 
link is already gone !!??

[ 2927.509473] brcmfmac: [brcmf_msgbuf_process_flow_ring_delete_response -> 
__brcmf_msgbuf_remove_flowring] flowid:3
[ 2927.519800] brcmfmac: [__brcmf_msgbuf_remove_flowring -> 
__brcmf_flowring_delete] flowid:3 ring:c7850540
[ 2927.529318] brcmfmac: [__brcmf_msgbuf_remove_flowring -> 
__brcmf_flowring_delete] count:0

[ 2927.537526] brcmfmac: [brcmf_msgbuf_process_flow_ring_delete_response -> 
__brcmf_msgbuf_remove_flowring] flowid:34
[ 2927.547929] brcmfmac: [__brcmf_msgbuf_remove_flowring -> 
__brcmf_flowring_delete] flowid:34 ring:c7850180
[ 2927.557533] brcmfmac: [__brcmf_msgbuf_remove_flowring -> 
__brcmf_flowring_delete] count:0

[ 2927.559735] brcmfmac: [brcmf_msgbuf_flowring_create -> 
__brcmf_flowring_create] da:78:d6:f0:9b:ba:bc prio:0 ifidx:1
[ 2927.559739] brcmfmac: [brcmf_msgbuf_flowring_create -> 
__brcmf_flowring_create] flowid:3
[ 2927.584463] brcmfmac: [brcmf_msgbuf_process_flow_ring_create_response] 
flowid:3 status:0x0000

[ 2927.593211] brcmfmac: [brcmf_msgbuf_process_flow_ring_delete_response -> 
__brcmf_msgbuf_remove_flowring] flowid:3
[ 2927.603538] brcmfmac: [__brcmf_msgbuf_remove_flowring -> 
__brcmf_flowring_delete] flowid:3 ring:c658cb80
[ 2927.613059] brcmfmac: [__brcmf_flowring_delete -> __brcmu_pkt_buf_free_skb] [ifp:  
(null)] Freeing skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2927.626750] brcmfmac: [__brcmf_msgbuf_remove_flowring -> 
__brcmf_flowring_delete] count:1

[ 2928.348341] brcmfmac: CONSOLE: 029652.655 wl0: wlc_ampdu_resp_timeout: 
cleaning up resp tid 0 waiting forseq 0xbb9 for 1000 ms

[ 2930.887857] brcmfmac: [brcmf_msgbuf_flowring_create -> 
__brcmf_flowring_create] da:78:d6:f0:9b:ba:bc prio:0 ifidx:1
[ 2930.898340] brcmfmac: [brcmf_msgbuf_flowring_create -> 
__brcmf_flowring_create] flowid:3
[ 2930.906686] brcmfmac: [brcmf_msgbuf_process_flow_ring_create_response] 
flowid:3 status:0x0000

[ 2933.982285] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2933.995705] ------------[ cut here ]------------
[ 2934.000359] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2934.015949] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2934.088284] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Not tainted 4.4.21 #0
[ 2934.094913] Hardware name: BCM5301X
[ 2934.098403] Backtrace:
[ 2934.100877] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2934.108465]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2934.114183] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2934.121421] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2934.129527]  r5:00000009 r4:00000000
[ 2934.133126] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2934.141931]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2934.148707] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2934.158923] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2934.170158]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c658cf40 r4:c6b3fc80
[ 2934.176931] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2934.187731]  r10:c64d1240 r9:cacd2e80 r8:cacd2e80 r7:c7388180 r6:00000021 
r5:00000000
[ 2934.195616]  r4:c7389c00
[ 2934.198175] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2934.209761]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2934.217646]  r4:c7389c00
[ 2934.220207] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2934.232138]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2934.237853] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2934.247266]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2934.255069] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2934.262655]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2934.268363] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2934.275336]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2934.283223]  r4:c738bcc0
[ 2934.285770] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2934.293005]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2934.298708] ---[ end trace 886f614767d73cfe ]---

[ 2936.216611] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2936.230030] ------------[ cut here ]------------
[ 2936.234684] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2936.250276] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2936.322610] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2936.330456] Hardware name: BCM5301X
[ 2936.333946] Backtrace:
[ 2936.336421] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2936.344008]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2936.349726] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2936.356965] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2936.365072]  r5:00000009 r4:00000000
[ 2936.368669] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2936.377475]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2936.384249] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2936.394468] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2936.405702]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c7850040 r4:c6b3fc80
[ 2936.412474] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2936.423275]  r10:c64d1240 r9:cacd2e90 r8:cacd2e90 r7:c7388180 r6:00000021 
r5:00000000
[ 2936.431160]  r4:c7389c00
[ 2936.433720] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2936.445305]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2936.453190]  r4:c7389c00
[ 2936.455750] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2936.467683]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2936.473396] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2936.482811]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2936.490613] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2936.498199]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2936.503906] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2936.510880]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2936.518767]  r4:c738bcc0
[ 2936.521315] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2936.528549]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2936.534252] ---[ end trace 886f614767d73cff ]---

[ 2942.054359] brcmfmac: CONSOLE: 029666.332 wl0.2: wlc_send_bar: seq 0x1 tid 0

[ 2942.683661] brcmfmac: [brcmf_msgbuf_flowring_create -> 
__brcmf_flowring_create] da:78:d6:f0:9b:ba:bc prio:6 ifidx:1
[ 2942.694175] brcmfmac: [brcmf_msgbuf_flowring_create -> 
__brcmf_flowring_create] flowid:34
[ 2942.702765] brcmfmac: [brcmf_msgbuf_process_flow_ring_create_response] 
flowid:34 status:0x0000

[ 2942.850073] brcmfmac: CONSOLE: 029667.008 wl0.2: wlc_send_bar: seq 0x1 tid 6

[ 2943.368191] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2943.381618] ------------[ cut here ]------------
[ 2943.386273] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2943.401864] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2943.474198] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2943.482044] Hardware name: BCM5301X
[ 2943.485534] Backtrace:
[ 2943.488009] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2943.495597]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2943.501314] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2943.508553] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2943.516660]  r5:00000009 r4:00000000
[ 2943.520258] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2943.529055]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2943.535829] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2943.546047] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2943.557281]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c658cd00 r4:c6b3fc80
[ 2943.564054] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2943.574855]  r10:c64d1240 r9:cacd30b0 r8:cacd30b0 r7:c7388180 r6:00000021 
r5:00000000
[ 2943.582741]  r4:c7389c00
[ 2943.585301] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2943.596885]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2943.604771]  r4:c7389c00
[ 2943.607330] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2943.619262]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2943.624976] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2943.634391]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2943.642193] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2943.649779]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2943.655485] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2943.662460]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2943.670346]  r4:c738bcc0
[ 2943.672893] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2943.680129]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2943.685832] ---[ end trace 886f614767d73d00 ]---

[ 2948.380193] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2948.393616] ------------[ cut here ]------------
[ 2948.398271] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2948.413860] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2948.486196] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2948.494041] Hardware name: BCM5301X
[ 2948.497532] Backtrace:
[ 2948.500007] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2948.507593]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2948.513311] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2948.520551] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2948.528657]  r5:00000009 r4:00000000
[ 2948.532256] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2948.541061]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2948.547836] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2948.558053] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2948.569288]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c7850340 r4:c6b3fc80
[ 2948.576060] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2948.586860]  r10:c64d1240 r9:cacd3340 r8:cacd3340 r7:c7388180 r6:00000003 
r5:00000000
[ 2948.594747]  r4:c7389c00
[ 2948.597307] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2948.608891]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2948.616776]  r4:c7389c00
[ 2948.619336] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2948.631268]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2948.636983] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2948.646396]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2948.654198] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2948.661776]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2948.667483] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2948.674458]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2948.682343]  r4:c738bcc0
[ 2948.684892] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2948.692126]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2948.697830] ---[ end trace 886f614767d73d01 ]---

[ 2948.705730] brcmfmac: CONSOLE: 029672.990 wl0.2: wlc_send_bar: seq 0x19 tid 0

[ 2956.055394] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2956.068820] ------------[ cut here ]------------
[ 2956.073474] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2956.089064] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2956.161400] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2956.169245] Hardware name: BCM5301X
[ 2956.172735] Backtrace:
[ 2956.175211] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2956.182798]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2956.188515] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2956.195754] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2956.203861]  r5:00000009 r4:00000000
[ 2956.207459] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2956.216264]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2956.223039] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2956.233256] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2956.244491]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c658ca80 r4:c6b3fc80
[ 2956.251264] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2956.262064]  r10:c64d1240 r9:cacd3530 r8:cacd3530 r7:c7388180 r6:00000021 
r5:00000000
[ 2956.269950]  r4:c7389c00
[ 2956.272509] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2956.284094]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2956.291980]  r4:c7389c00
[ 2956.294539] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2956.306473]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2956.312185] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2956.321591]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2956.329393] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2956.336971]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2956.342677] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2956.349653]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2956.357538]  r4:c738bcc0
[ 2956.360086] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2956.367321]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2956.373024] ---[ end trace 886f614767d73d02 ]---

[ 2966.060530] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2966.073953] ------------[ cut here ]------------
[ 2966.078607] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2966.094198] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2966.166533] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2966.174378] Hardware name: BCM5301X
[ 2966.177869] Backtrace:
[ 2966.180345] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2966.187931]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2966.193648] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2966.200887] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2966.208994]  r5:00000009 r4:00000000
[ 2966.212593] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2966.221398]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2966.228171] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2966.238382] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2966.249616]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c7850680 r4:c6b3fc80
[ 2966.256388] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2966.267190]  r10:c64d1240 r9:cacd3670 r8:cacd3670 r7:c7388180 r6:00000021 
r5:00000001
[ 2966.275075]  r4:c7389c00
[ 2966.277634] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2966.289219]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2966.297104]  r4:c7389c00
[ 2966.299664] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2966.311596]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2966.317311] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2966.326724]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2966.334527] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2966.342112]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2966.347820] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2966.354795]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2966.362680]  r4:c738bcc0
[ 2966.365229] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2966.372464]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2966.378166] ---[ end trace 886f614767d73d03 ]---

[ 2966.527066] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2966.540487] ------------[ cut here ]------------
[ 2966.545141] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2966.560731] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2966.633066] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2966.640913] Hardware name: BCM5301X
[ 2966.644403] Backtrace:
[ 2966.646878] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2966.654465]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2966.660181] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2966.667422] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2966.675529]  r5:00000009 r4:00000000
[ 2966.679127] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2966.687932]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2966.694703] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2966.704915] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2966.716149]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c78508c0 r4:c6b3fc80
[ 2966.722922] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2966.733723]  r10:c64d1240 r9:cacd3700 r8:cacd3700 r7:c7388180 r6:00000021 
r5:00000000
[ 2966.741609]  r4:c7389c00
[ 2966.744168] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2966.755753]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2966.763639]  r4:c7389c00
[ 2966.766198] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2966.778131]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2966.783843] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2966.793250]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2966.801052] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2966.808630]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2966.814336] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2966.821311]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2966.829197]  r4:c738bcc0
[ 2966.831745] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2966.838981]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2966.844683] ---[ end trace 886f614767d73d04 ]---

[ 2971.310626] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2971.324049] ------------[ cut here ]------------
[ 2971.328703] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2971.344293] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2971.416627] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2971.424474] Hardware name: BCM5301X
[ 2971.427964] Backtrace:
[ 2971.430440] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2971.438026]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2971.443744] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2971.450983] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2971.459090]  r5:00000009 r4:00000000
[ 2971.462688] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2971.471492]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2971.478268] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2971.488486] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2971.499728]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c658c080 r4:c6b3fc80
[ 2971.506501] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2971.517302]  r10:c64d1240 r9:cacd37f0 r8:cacd37f0 r7:c7388180 r6:00000021 
r5:00000000
[ 2971.525187]  r4:c7389c00
[ 2971.527746] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2971.539332]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2971.547217]  r4:c7389c00
[ 2971.549777] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2971.561709]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2971.567423] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2971.576837]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2971.584639] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2971.592225]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2971.597933] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2971.604908]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2971.612793]  r4:c738bcc0
[ 2971.615342] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2971.622576]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2971.628280] ---[ end trace 886f614767d73d05 ]---

[ 2972.173454] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2972.186877] ------------[ cut here ]------------
[ 2972.191530] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2972.207120] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2972.279454] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2972.287301] Hardware name: BCM5301X
[ 2972.290792] Backtrace:
[ 2972.293266] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2972.300854]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2972.306572] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2972.313812] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2972.321917]  r5:00000009 r4:00000000
[ 2972.325516] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2972.334320]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2972.341097] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2972.351314] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2972.362556]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c7850800 r4:c6b3fc80
[ 2972.369328] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2972.380130]  r10:c64d1240 r9:cacd3900 r8:cacd3900 r7:c7388180 r6:00000021 
r5:00000000
[ 2972.388015]  r4:c7389c00
[ 2972.390574] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2972.402158]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2972.410044]  r4:c7389c00
[ 2972.412605] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2972.424536]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2972.430251] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2972.439665]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2972.447467] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2972.455054]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2972.460760] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2972.467734]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2972.475621]  r4:c738bcc0
[ 2972.478169] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2972.485403]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2972.491107] ---[ end trace 886f614767d73d06 ]---

[ 2974.318618] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2974.332046] ------------[ cut here ]------------
[ 2974.336700] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2974.352291] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2974.424626] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2974.432471] Hardware name: BCM5301X
[ 2974.435962] Backtrace:
[ 2974.438437] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2974.446024]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2974.451741] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2974.458981] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2974.467086]  r5:00000009 r4:00000000
[ 2974.470685] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2974.479482]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2974.486259] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2974.496474] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2974.507708]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c658c3c0 r4:c6b3fc80
[ 2974.514481] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2974.525282]  r10:c64d1240 r9:cacd3a20 r8:cacd3a20 r7:c7388180 r6:00000021 
r5:00000000
[ 2974.533168]  r4:c7389c00
[ 2974.535727] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2974.547312]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2974.555198]  r4:c7389c00
[ 2974.557757] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2974.569690]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2974.575403] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2974.584817]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2974.592619] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2974.600197]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2974.605905] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2974.612879]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2974.620765]  r4:c738bcc0
[ 2974.623312] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2974.630549]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2974.636250] ---[ end trace 886f614767d73d07 ]---

[ 2975.049818] brcmfmac: [__brcmf_txfinalize -> __brcmu_pkt_buf_free_skb] [ifp:c6b3fc80] 
***BUG*** skb:c64d1240 skb->dev:c6b3f800 skb->dev->name:wlan1-1
[ 2975.063243] ------------[ cut here ]------------
[ 2975.067897] WARNING: CPU: 1 PID: 615 at 
compat-wireless-2016-06-20/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c:70
 __brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac]()
[ 2975.083488] Modules linked in: pppoe ppp_async iptable_nat brcmfmac pppox 
ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT 
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark 
xt_mac xt_limit xt_id xt_conntrack xt_commed
[ 2975.155822] CPU: 1 PID: 615 Comm: irq/33-brcmf_pc Tainted: G        W       
4.4.21 #0
[ 2975.163668] Hardware name: BCM5301X
[ 2975.167159] Backtrace:
[ 2975.169634] [<c001708c>] (dump_backtrace) from [<c0017288>] 
(show_stack+0x18/0x1c)
[ 2975.177221]  r7:00000046 r6:bf1d1146 r5:60000093 r4:00000000
[ 2975.182938] [<c0017270>] (show_stack) from [<c017d038>] 
(dump_stack+0x84/0xa4)
[ 2975.190177] [<c017cfb4>] (dump_stack) from [<c0021490>] 
(warn_slowpath_common+0x8c/0xb8)
[ 2975.198283]  r5:00000009 r4:00000000
[ 2975.201882] [<c0021404>] (warn_slowpath_common) from [<c0021560>] 
(warn_slowpath_null+0x24/0x2c)
[ 2975.210688]  r8:a0000013 r7:c6b3fdd0 r6:bf1c9f2d r5:c6b3fc80 r4:c64d1240
[ 2975.217465] [<c002153c>] (warn_slowpath_null) from [<bf1bd550>] 
(__brcmu_pkt_buf_free_skb+0x98/0x1ec [brcmfmac])
[ 2975.227681] [<bf1bd4b8>] (__brcmu_pkt_buf_free_skb [brcmfmac]) from 
[<bf1bde90>] (__brcmf_txfinalize+0x19c/0x1d0 [brcmfmac])
[ 2975.238923]  r8:c04903c8 r7:c6b3fdd0 r6:c64d1240 r5:c7850b00 r4:c6b3fc80
[ 2975.245695] [<bf1bdcf4>] (__brcmf_txfinalize [brcmfmac]) from [<bf1c377c>] 
(brcmf_msgbuf_txdata+0x53c/0x6e8 [brcmfmac])
[ 2975.256496]  r10:c64d1240 r9:cacd3c50 r8:cacd3c50 r7:c7388180 r6:00000021 
r5:00000000
[ 2975.264381]  r4:c7389c00
[ 2975.266941] [<bf1c3390>] (brcmf_msgbuf_txdata [brcmfmac]) from [<bf1c3964>] 
(brcmf_proto_msgbuf_rx_trigger+0x3c/0xd0 [brcmfmac])
[ 2975.278526]  r10:00000000 r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 
r5:00010000
[ 2975.286411]  r4:c7389c00
[ 2975.288971] [<bf1c3928>] (brcmf_proto_msgbuf_rx_trigger [brcmfmac]) from 
[<bf1c8004>] (brcmf_pcie_isr_thread+0x1c4/0x238 [brcmfmac])
[ 2975.300904]  r7:c0057d98 r6:c7a0c240 r5:00010000 r4:c68fa800
[ 2975.306617] [<bf1c7e40>] (brcmf_pcie_isr_thread [brcmfmac]) from 
[<c0057dbc>] (irq_thread_fn+0x24/0x3c)
[ 2975.316032]  r9:c0493882 r8:c738ba64 r7:c0057d98 r6:c7a0c240 r5:c738ba40 
r4:c738ba40
[ 2975.323834] [<c0057d98>] (irq_thread_fn) from [<c00580a0>] 
(irq_thread+0xf8/0x1e4)
[ 2975.331420]  r7:c0057d98 r6:c7254000 r5:c738ba40 r4:c7a0c240
[ 2975.337127] [<c0057fa8>] (irq_thread) from [<c00394c4>] (kthread+0xe0/0xf4)
[ 2975.344102]  r10:00000000 r9:00000000 r8:00000000 r7:c0057fa8 r6:c738ba40 
r5:00000000
[ 2975.351987]  r4:c738bcc0
[ 2975.354535] [<c00393e4>] (kthread) from [<c00097b8>] 
(ret_from_fork+0x14/0x3c)
[ 2975.361770]  r7:00000000 r6:00000000 r5:c00393e4 r4:c738bcc0
[ 2975.367473] ---[ end trace 886f614767d73d08 ]---

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