warning log "qmi_wwan: transmit queue 0 timed out"

Wed Dec 18 10:49:52 UTC 2019

Hi all,

I am using EM7565 on my hardware, but sometimes report below qmi_wwan warning log, is there anyone also encounter this issue? and is there any side affect for modem usage?

If this is qmi_wwan driver issue, is there any solution for this?

Thanks in advance.

Dec 18 08:13:45 TM1000v3 user.info kernel: [ 3602.470871] NETDEV WATCHDOG: wwan2 (qmi_wwan): transmit queue 0 timed out
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.477766] ------------[ cut here ]------------
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.482368] WARNING: at /data/jack_amb/2_h2_sdk_svn/h2_sdk/ambarella/kernel/linux-4.4/net/sched/sch_generic.c:306
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.492594] Modules linked in: qmi_wwan(O) cdc_wdm(O) GobiSerial(O) usbnet(O) usbserial cdc_acm evdev 8812au(O) ir_rc6_decoder ir_nec_decoder ir_mce_kbd_decoder ir_xmp_decoder snd_usb_audio ir_jvc_decoder ir_sanyo_decoder ir
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.569986] 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.571469] CPU: 0 PID: 21961 Comm: real_enc Tainted: P           O    4.4.13 #1
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.578833] Hardware name: Ambarella H2BUB Board (DT)
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.583863] task: ffffffc018d4bf00 ti: ffffffc016238000 task.ti: ffffffc016238000
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.591323] PC is at dev_watchdog+0x2d8/0x2e8
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.595655] LR is at dev_watchdog+0x2d8/0x2e8
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.599988] pc : [<ffffffc0003fb510>] lr : [<ffffffc0003fb510>] pstate: 00000145
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.607353] sp : ffffffc01623bcd0
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.610648] x29: ffffffc01623bcd0 x28: 0000000000000005 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.615933] x27: ffffffc0192bf000 x26: 00000000ffffffff 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.621220] x25: 0000000000000000 x24: ffffffc00073a000 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.626507] x23: ffffffc0006f2000 x22: ffffffc0192bf3a0 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.631793] x21: 0000000000000000 x20: ffffffc0192bf000 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.637080] x19: ffffffc013524400 x18: 0000000000000010 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.642366] x17: 0000007fab2ccb50 x16: 0000000001032078 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.647653] x15: ffffffc08074d627 x14: 0000000000000005 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.652940] x13: ffffffc00074d635 x12: ffffffc00074da62 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.658226] x11: 0000000005f5e0ff x10: ffffffc01623ba30 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.663513] x9 : 00000000ffffffd0 x8 : 756575712074696d 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.668800] x7 : ffffffc0006f3cc8 x6 : ffffffc00036b988 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.674086] x5 : 0000000000000000 x4 : 0000000000000000 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.679373] x3 : 0000000000000000 x2 : ffffffc02079cfd8 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.684660] x1 : ffffffc016238000 x0 : 000000000000003d 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.689945] 
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.691420] ---[ end trace 8955d8055cd3faa5 ]---
Dec 18 08:13:45 TM1000v3 user.emerg kernel: [ 3602.696015] Call trace:
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.698446] [<ffffffc0003fb510>] dev_watchdog+0x2d8/0x2e8
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.703823] [<ffffffc0000e899c>] call_timer_fn.isra.8+0x24/0x88
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.709717] [<ffffffc0000e8b80>] run_timer_softirq+0x180/0x200
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.715526] [<ffffffc00009b4c8>] __do_softirq+0x110/0x228
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.720901] [<ffffffc00009b864>] irq_exit+0x84/0xd8
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.725756] [<ffffffc0000d78c8>] __handle_domain_irq+0x60/0xb0
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.731563] [<ffffffc000080d0c>] gic_handle_irq+0x54/0xa8
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.736935] Exception stack(0xffffffc01623bea0 to 0xffffffc01623bfc0)
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.743350] bea0: 0000000000000000 0000007fa8d00188 ffffffffffffffff 000000000048b0a8
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.751151] bec0: 0000000080000000 00000000004c4b40 0000000000000a1a 0000000000001680
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.758950] bee0: 0000000000000002 0000007fa8484a9e 0000007fa1cbda22 0000007fa8484aa0
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.766750] bf00: 00000000000000b4 00000000000000ff 00000000000000ff 00000000001b3dcc
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.774550] bf20: 000000005df9dfb8 00000000000af2af 0000000000000018 00000003e8000000
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.782351] bf40: 0000000000000001 002ac3fe06ace187 0000000001032078 0000007fab2ccb50
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.790151] bf60: 0000000000000003 0000000000001200 0000007fa8d00188 0000007fa8d00106
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.797951] bf80: 0000007fa8d00107 0000007fab3ca000 000000000048c194 0000000000000000
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.805750] bfa0: 0000000000000001 0000000000000000 0000007fa0e201e0 0000007fa0e1f450
Dec 18 08:13:45 TM1000v3 user.warn kernel: [ 3602.813552] [<ffffffc000084290>] el0_irq_naked+0x14/0x24

--

Best Regards,
Dai,Lijin
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