[FS#683] ZBT-3526 / kernel crash -> mt7603_mac.c:1231 (kworker/u8:2 Not tainted 4.4.59 #0)

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - camel (camel) 

Attached to Project - LEDE Project
Summary - ZBT-3526 / kernel crash -> mt7603_mac.c:1231 (kworker/u8:2 Not tainted 4.4.59 #0)
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - in current trunk, the mt76 chip still crashing .. not that often as before ... but still existing :(
version: Powered by LuCI Master (git-17.092.75394-18ed405) / LEDE Reboot SNAPSHOT r3913-190db43

Thu Apr  6 23:37:14 2017 kern.warn kernel: [  847.950000] ------------[ cut here ]------------
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  847.950000] WARNING: CPU: 2 PID: 30 at /home/buildbot/slave-lede-local/ramips_mt7621/build/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7621/mt76-2017-03-17-712b8e8f/mt7603_mac.c:1231 m
t7603_mac_work+0x204/0x284 [mt7603e]()
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  847.970000] Modules linked in: pppoe ppp_async option usb_wwan pptp pppox ppp_mppe ppp_generic nf_nat_pptp nf_conntrack_pptp nf_conntrack_ipv6 iptable_nat ipt_REJECT ipt_MASQUERADE xt_time
xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_NETMAP xt_L
OG xt_HL xt_DSCP xt_CT xt_CLASSIFY usbserThu Apr  6 23:37:14 2017 kern.warn kernel: [  848.130000] CPU: 2 PID: 30 Comm: kworker/u8:2 Not tainted 4.4.59 #0
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.140000] Workqueue: phy0 mt7603_mac_work [mt7603e]
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.140000] Stack : 8fd2b200 80480000 8040494c 000004cf 8f3ed470 00000000 8fc04614 8fd2b218
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.140000]         00000088 80064f98 8040494c 00000002 0000001e 804e367c 80420404 8fd6fd54
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.140000]         80480000 80062ce4 80490000 80500000 8048e288 8048e28c 80409260 8fd6fd54
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.140000]         80480000 800424c0 8fc04614 8fd6fd8c 00000570 00000000 00000000 00d6fd74
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.140000]         8f3ed26c 8ff8c600 8ff8c400 30796870 00000000 00000000 00000000 00000000
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.140000]         ...
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.180000] Call Trace:
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.180000] [] show_stack+0x50/0x84
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.180000] [] dump_stack+0x84/0xbc
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.190000] [] warn_slowpath_common+0xa0/0xd0
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.190000] [] warn_slowpath_null+0x18/0x24
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.200000] [] mt7603_mac_work+0x204/0x284 [mt7603e]
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.200000] [] process_one_work+0x214/0x358
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.210000] [] worker_thread+0x2d8/0x440
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.210000] [] kthread+0xd8/0xec
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.220000] [] ret_from_kernel_thread+0x14/0x1c
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.220000]
Thu Apr  6 23:37:14 2017 kern.warn kernel: [  848.220000] ---[ end trace df23aaae48f98962 ]---


any ideas ?

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=683