[FS#565] crash in MT7603E

[LEDE Bugs]

The following task has a new comment added:

FS#565 - crash in MT7603E
User who did this - David Hunninsett (davehun)

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Happens on Linux version 4.9.51 (buildbot at builds) (gcc version 5.4.0 (LEDE GCC 5.4.0 r4851-9fc5df5) ) #0 SMP Thu Sep 21 21:03:46 2017

[ 1420.444320] WARNING: CPU: 0 PID: 532 at /home/buildbot/slave-lede-local/ramips_mt7621/build/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7621/mt76-2017-07-17-3c4c9a64/mt7603_mac.c:1279 mt7603_mac_work+0x124/0x244 [mt7603e]
[ 1420.484576] Modules linked in: pppoe ppp_async pppox ppp_generic nf_conntrack_ipv6 iptable_nat ipt_REJECT ipt_MASQUERADE xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_CT slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_mangle iptable_filter ip_tables crc_ccitt mt76x2e mt7603e ledtrig_usbport mt76 mac80211 cfg80211 compat ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables x_tables leds_gpio xhci_mtk xhci_plat_hcd xhci_pci xhci_hcd gpio_button_hotplug usbcore nls_base usb_common
[ 1420.613811] CPU: 0 PID: 532 Comm: kworker/u4:2 Not tainted 4.9.51 #0
[ 1420.626478] Workqueue: phy0 mt7603_mac_work [mt7603e]
[ 1420.636519] Stack : 8768a300 804f0000 80482c2c 876be958 00000009 000004ff 87c04a18 8768a318
[ 1420.653159]         00000088 8006b878 80482c2c 00000000 00000214 80553824 80482b98 877e1d54
[ 1420.669798]         804f0000 800a9fe0 00000001 80550000 804f1fa4 804f1fa8 80487814 877e1d54
[ 1420.686440]         804f0000 80043250 87c04a18 877e1d8c 00000300 00000000 804e95fc 007e1d74
[ 1420.703074]         876bd5fc 87543600 87543700 30796870 00000000 00000000 00000000 00000000
[ 1420.719707]         ...
[ 1420.724564] Call Trace:
[ 1420.729440] [] show_stack+0x54/0x88
[ 1420.738116] [] dump_stack+0x8c/0xd0
[ 1420.746776] [] __warn+0xe4/0x118
[ 1420.754914] [] warn_slowpath_null+0x1c/0x30
[ 1420.764962] [] mt7603_mac_work+0x124/0x244 [mt7603e]
[ 1420.776583] [] process_one_work+0x200/0x348
[ 1420.786625] [] worker_thread+0x2d4/0x45c
[ 1420.796157] [] kthread+0xe0/0xf4
[ 1420.804296] [] ret_from_kernel_thread+0x14/0x1c
[ 1420.815595] ---[ end trace 59117398045e1164 ]---
[ 1420.825452] br-lan: port 3(wlan0) entered blocking 
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=565#comment3559