内存崩溃问题!

内核日子如下:

[    0.000000] Linux version 3.18.29 (root@ubuntu-telpo) (gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r49363) ) #23 Mon Mar 20 10:09:19 CST 2017
[    0.000000] Board has DDR2
[    0.000000] Analog PMU set to hw control
[    0.000000] Digital PMU set to hw control
[    0.000000] SoC Type: MediaTek MT7628AN ver:1 eco:2
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019655 (MIPS 24KEc)
[    0.000000] MIPS: machine is WRTnode2R
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x00000000-0x03ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00000000-0x03ffffff]
[    0.000000] Initmem setup node 0 [mem 0x00000000-0x03ffffff]
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
[    0.000000] Kernel command line: console=ttyS0,57600 rootfstype=squashfs,jffs2
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Writing ErrCtl register=000751c0
[    0.000000] Readback ErrCtl register=000751c0
[    0.000000] Memory: 61168K/65536K available (2676K kernel code, 135K rwdata, 544K rodata, 156K init, 186K bss, 4368K reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:256
[    0.000000] intc: using register map from devicetree
[    0.000000] CPU Clock: 580MHz
[    0.000000] clocksource_of_init: no matching clocksources found
[    0.000000] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[    0.060000] pid_max: default: 32768 minimum: 301
[    0.060000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.070000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.080000] pinctrl core: initialized pinctrl subsystem
[    0.090000] NET: Registered protocol family 16
[    0.200000] mt7620-pci 10140000.pcie: Port 0 N_FTS = 1b105000
[    0.350000] mt7620-pci 10140000.pcie: PCIE0 no card, disable it(RST&CLK)
[    0.360000] mt7620-pci: probe of 10140000.pcie failed with error -1
[    0.380000] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.390000] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.400000] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.410000] Switched to clocksource MIPS
[    0.420000] NET: Registered protocol family 2
[    0.420000] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.440000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.450000] TCP: Hash tables configured (established 1024 bind 1024)
[    0.460000] TCP: reno registered
[    0.470000] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.480000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.490000] NET: Registered protocol family 1
[    0.500000] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.530000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.540000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.570000] msgmni has been set to 119
[    0.570000] io scheduler noop registered
[    0.580000] io scheduler deadline registered (default)
[    0.590000] drivers/phy/phy-ralink-usb.c:ralink_usb_phy_probe[336]
[    0.600000] drivers/phy/phy-ralink-usb.c:ralink_usb_phy_probe[350]
[    0.620000] gdma-rt2880 10002800.gdma: revision: 3, channels: 16
[    0.630000] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[    0.640000] console [ttyS0] disabled
[    0.650000] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 28, base_baud = 2500000) is a 16550A
[    0.670000] console [ttyS0] enabled
[    0.670000] console [ttyS0] enabled
[    0.680000] bootconsole [early0] disabled
[    0.680000] bootconsole [early0] disabled
[    0.700000] 10000d00.uart1: ttyS1 at MMIO 0x10000d00 (irq = 29, base_baud = 2500000) is a 16550A
[    0.720000] of_serial: probe of 10000e00.uart2 failed with error -28
[    0.730000] MT7628/7688 SPI Driver By WRTnode Team !
[    0.740000] spi-mt7621 10000b00.spi: sys_freq: 193333333
[    0.760000] m25p80 spi0.0: w25q128 (16384 Kbytes)
[    0.770000] m25p80 spi0.0: using chunked io
[    0.770000] 4 ofpart partitions found on MTD device spi0.0
[    0.790000] Creating 4 MTD partitions on "spi0.0":
[    0.800000] 0x000000000000-0x000000030000 : "u-boot"
[    0.810000] 0x000000030000-0x000000040000 : "u-boot-env"
[    0.820000] 0x000000040000-0x000000050000 : "factory"
[    0.830000] 0x000000050000-0x000002000000 : "firmware"
[    0.840000] mtd: partition "firmware" extends beyond the end of device "spi0.0" -- size truncated to 0xfb0000
[    0.920000] 2 uimage-fw partitions found on MTD device firmware
[    0.930000] 0x000000050000-0x000000176c4a : "kernel"
[    0.950000] 0x000000176c4a-0x000001000000 : "rootfs"
[    0.960000] mtd: device 5 (rootfs) set to be root filesystem
[    0.970000] 1 squashfs-split partitions found on MTD device rootfs
[    0.980000] 0x000000770000-0x000001000000 : "rootfs_data"
[    1.000000] ralink_soc_eth 10100000.ethernet eth0: ralink at 0xb0100000, irq 5
[    1.020000] mt7621_wdt 10000120.watchdog: Initialized
[    1.030000] nf_conntrack version 0.5.0 (955 buckets, 3820 max)
[    1.040000] TCP: cubic registered
[    1.050000] NET: Registered protocol family 17
[    1.050000] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[    1.080000] Bridge firewalling registered
[    1.090000] 8021q: 802.1Q VLAN Support v1.8
[    1.110000] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
[    1.130000] Freeing unused kernel memory: 156K (80349000 - 80370000)
[    2.960000] init: Console is alive
[    2.970000] init: - watchdog -
[    6.050000] usbcore: registered new interface driver usbfs
[    6.060000] usbcore: registered new interface driver hub
[    6.070000] usbcore: registered new device driver usb
[    6.090000] gpio_rst_drv_init:Hello slic_gpio
[    6.100000] gpio_rst_drv_init:Hello gpio_rst
[    6.110000] spi_drv_init:Hello spi
[    6.110000] spi_drv_init:SIM_ENABLE
[    6.120000] gpio_rst_drv_init:Hello watchdog
[    6.140000] SCSI subsystem initialized
[    6.150000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    6.170000] ehci-platform: EHCI generic platform driver
[    6.350000] U2PHY P0 set SRCTRL calibration value: 7
[    6.350000] ehci-platform 101c0000.ehci: EHCI Host Controller
[    6.370000] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
[    6.380000] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[    6.410000] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[    6.420000] hub 1-0:1.0: USB hub found
[    6.430000] hub 1-0:1.0: 1 port detected
[    6.440000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    6.450000] ohci-platform: OHCI generic platform driver
[    6.460000] ohci-platform 101c1000.ohci: Generic Platform OHCI controller
[    6.470000] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 2
[    6.490000] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
[    6.560000] hub 2-0:1.0: USB hub found
[    6.570000] hub 2-0:1.0: 1 port detected
[    6.580000] usbcore: registered new interface driver usb-storage
[    6.750000] usb 1-1: new high-speed USB device number 2 using ehci-platform
[    7.080000] init: - preinit -
[    8.100000] rt305x-esw 10110000.esw: link changed 0x00
[    8.340000] random: mktemp urandom read with 13 bits of entropy available
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[   11.080000] rt305x-esw 10110000.esw: link changed 0x04
[   11.600000] mount_root: loading kmods from internal overlay
[   12.270000] jffs2: notice: (381) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
[   12.300000] block: attempting to load /tmp/jffs_cfg/upper/etc/config/fstab
[   12.330000] block: extroot: not configured
[   12.500000] jffs2: notice: (378) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
[   13.000000] block: attempting to load /tmp/jffs_cfg/upper/etc/config/fstab
[   13.020000] block: extroot: not configured
[   13.030000] mount_root: switching to jffs2 overlay
[   13.070000] procd: - early -
[   13.080000] procd: - watchdog -
[   13.990000] procd: - ubus -
[   15.020000] procd: - init -
Please press Enter to activate this console.
[   17.290000] NET: Registered protocol family 10
[   17.330000] ntfs: driver 2.1.31 [Flags: R/O MODULE].
[   17.350000] Initializing XFRM netlink socket
[   17.360000] NET: Registered protocol family 15
[   17.420000] tun: Universal TUN/TAP device driver, 1.6
[   17.430000] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[   17.470000] l2tp_core: L2TP core driver, V2.0
[   17.480000] l2tp_netlink: L2TP netlink interface
[   17.500000] gre: GRE over IPv4 demultiplexor driver
[   17.520000] ip_gre: GRE over IPv4 tunneling driver
[   17.530000] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   17.570000] Ralink/MTK WiFi EEPROM API Build for MT7620. 
[   17.580000] i2c /dev entries driver
[   17.660000] u32 classifier
[   17.670000]     input device check on
[   17.670000]     Actions configured
[   17.680000] Mirror/redirect action on
[   18.700000] 
[   18.700000] 
[   18.700000] === pAd = c0650000, size = 1476032 ===
[   18.700000] 
[   18.720000] <-- RTMPAllocTxRxRingMemory, Status=0, ErrorValue=0x
[   18.730000] <-- RTMPAllocAdapterBlock, Status=0
[   18.740000] RtmpChipOpsHook(492): Not support for HIF_MT yet!
[   18.750000] mt7628_init()-->
[   18.760000] mt7628_init(FW(8a00), HW(8a01), CHIPID(7628))
[   18.770000] e2.bin mt7628_init(1117)::(2), pChipCap->fw_len(63056)
[   18.780000] mt_bcn_buf_init(218): Not support for HIF_MT yet!
[   18.790000] <--mt7628_init()
[   18.840000] arp_tables: (C) 2002 David S. Miller
[   18.850000] usbcore: registered new interface driver cdc_wdm
[   18.870000] ip_tables: (C) 2000-2006 Netfilter Core Team
[   18.930000] RTC HT1831 probe
[   18.970000] rtc-ht1381 600.rtc: rtc core: registered rtc-ht1381 as rtc0
[   18.980000] RTC HT1831 probe success!
[   19.010000] usbcore: registered new interface driver usbserial
[   19.020000] usbcore: registered new interface driver usbserial_generic
[   19.040000] usbserial: USB Serial support registered for generic
[   19.070000] xt_time: kernel timezone is -0000
[   19.090000] PPP generic driver version 2.4.2
[   19.100000] PPP MPPE Compression module registered
[   19.110000] NET: Registered protocol family 24
[   19.130000] PPTP driver version 0.8.5
[   19.140000] qmi_wwan: probe of 1-1:1.3 failed with error -1
[   19.150000] qmi_wwan: probe of 1-1:1.5 failed with error -1
[   19.160000] usbcore: registered new interface driver qmi_wwan
[   19.180000] SIM7600 device
[   19.180000] simcom usbnet bind here
[   19.190000] simcom_wwan 1-1:1.5 wwan0: register 'simcom_wwan' at usb-101c0000.ehci-1, SIMCOM wwan/QMI device, c2:c2:b3:0f:f8:cc
[   19.220000] usbcore: registered new interface driver simcom_wwan
[   19.240000] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[   19.260000] usbcore: registered new interface driver option
[   19.270000] usbserial: USB Serial support registered for GSM modem (1-port)
[   19.280000] option 1-1:1.0: GSM modem (1-port) converter detected
[   19.290000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
[   19.310000] option 1-1:1.1: GSM modem (1-port) converter detected
[   19.320000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
[   19.330000] option 1-1:1.2: GSM modem (1-port) converter detected
[   19.350000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
[   19.360000] option 1-1:1.3: GSM modem (1-port) converter detected
[   19.370000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
[   19.390000] option 1-1:1.4: GSM modem (1-port) converter detected
[   19.400000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB4
[   19.420000] usbcore: registered new interface driver qcserial
[   19.430000] usbserial: USB Serial support registered for Qualcomm USB modem
[   23.620000] rt305x-esw 10110000.esw: link changed 0x00
[   25.860000] TX_BCN DESC a2425000 size = 320
[   25.870000] RX[0] DESC a2427000 size = 2048
[   25.880000] RX[1] DESC a242a000 size = 1024
[   25.990000] E2pAccessMode=2
[   26.000000] cfg_mode=9
[   26.000000] cfg_mode=9
[   26.010000] wmode_band_equal(): Band Equal!
[   26.020000] APSDCapable[0]=1
[   26.020000] APSDCapable[1]=1
[   26.030000] APSDCapable[2]=1
[   26.030000] APSDCapable[3]=1
[   26.040000] APSDCapable[4]=1
[   26.050000] APSDCapable[5]=1
[   26.050000] APSDCapable[6]=1
[   26.060000] APSDCapable[7]=1
[   26.060000] APSDCapable[8]=1
[   26.070000] APSDCapable[9]=1
[   26.070000] APSDCapable[10]=1
[   26.080000] APSDCapable[11]=1
[   26.090000] APSDCapable[12]=1
[   26.090000] APSDCapable[13]=1
[   26.100000] APSDCapable[14]=1
[   26.100000] APSDCapable[15]=1
[   26.110000] default ApCliAPSDCapable[0]=1
[   26.120000] default ApCliAPSDCapable[1]=1
[   26.320000] Key1Str is Invalid key length(0) or Type(0)
[   26.330000] Key2Str is Invalid key length(0) or Type(0)
[   26.340000] Key3Str is Invalid key length(0) or Type(0)
[   26.350000] Key4Str is Invalid key length(0) or Type(0)
[   26.410000] RTMPSetDefaultChannel() : default channel to 1 
[   26.420000] load fw image from fw_header_image
[   26.430000] AndesMTLoadFwMethod1(2174)::pChipCap->fw_len(63056)
[   26.440000] FW Version:_e2_mp
[   26.450000] FW Build Date:20150211175503
[   26.480000] CmdAddressLenReq:(ret = 0)
[   26.480000] CmdFwStartReq: override = 1, address = 1048576
[   26.490000] CmdStartDLRsp: WiFI FW Download Success
[   26.500000] MtAsicDMASchedulerInit(): DMA Scheduler Mode=0(LMAC)
[   26.520000] efuse_probe: efuse = 10000002
[   26.520000] RtmpChipOpsEepromHook::e2p_type=2, inf_Type=4
[   26.530000] RtmpEepromGetDefault::e2p_dafault=2
[   26.540000] RtmpChipOpsEepromHook: E2P type(2), E2pAccessMode = 2, E2P default = 2
[   26.560000] NVM is FLASH mode
[   26.560000] 1. Phy Mode = 14
[   26.570000] EEPROM:Read from [factory] offset 0x0,length 0x200.
[   26.610000] rt305x-esw 10110000.esw: link changed 0x04
[   26.880000] Country Region from e2p = ffff
[   26.880000] tssi_1_target_pwr_g_band = 32
[   26.890000] 2. Phy Mode = 14
[   26.900000] 3. Phy Mode = 14
[   26.900000] NICInitPwrPinCfg(11): Not support for HIF_MT yet!
[   26.920000] NICInitializeAsic(651): Not support rtmp_mac_sys_reset () for HIF_MT yet!
[   26.930000] mt_mac_init()-->
[   26.940000] MtAsicInitMac()-->
[   27.160000] mt7628_init_mac_cr()-->
[   27.160000] MtAsicSetMacMaxLen(1241): Set the Max RxPktLen=1024!
[   27.170000] <--mt_mac_init()
[   27.180000]  WTBL Segment 1 info:
[   27.190000]          MemBaseAddr/FID:0x28000/0
[   27.190000]          EntrySize/Cnt:32/128
[   27.200000]  WTBL Segment 2 info:
[   27.210000]          MemBaseAddr/FID:0x40000/0
[   27.210000]          EntrySize/Cnt:64/128
[   27.220000]  WTBL Segment 3 info:
[   27.230000]          MemBaseAddr/FID:0x42000/64
[   27.240000]          EntrySize/Cnt:64/128
[   27.240000]  WTBL Segment 4 info:
[   27.250000]          MemBaseAddr/FID:0x44000/128
[   27.260000]          EntrySize/Cnt:32/128
[   27.260000] AntCfgInit(2876): Not support for HIF_MT yet!
[   27.280000] MCS Set = ff ff 00 00 01
[   27.280000] MtAsicSetChBusyStat(826): Not support for HIF_MT yet!
[   27.380000] CmdSlotTimeSet:(ret = 0)
[   30.310000] [PMF]ap_pmf_init:: apidx=0, MFPC=0, MFPR=0, SHA256=0
[   30.320000] [PMF]RTMPMakeRsnIeCap: RSNIE Capability MFPC=0, MFPR=0
[   30.330000] MtAsicSetRalinkBurstMode(2919): Not support for HIF_MT yet!
[   30.340000] MtAsicSetPiggyBack(763): Not support for HIF_MT yet!
[   30.380000] MtAsicSetTxPreamble(2898): Not support for HIF_MT yet!
[   30.390000] MtAsicAddSharedKeyEntry(1308): Not support for HIF_MT yet!
[   30.410000] The 4-BSSID mode is enabled, the BSSID byte5 MUST be the multiple of 4
[   30.420000] MtAsicSetPreTbtt(): bss_idx=0, PreTBTT timeout = 0xf0
[   30.430000] Main bssid = 3c:d1:6e:77:11:99
[   30.440000] <==== rt28xx_init, Status=0
[   30.450000] mt7628_set_ed_cca: TURN OFF EDCCA  mac 0x10618 = 0xd7083f0f
[   30.470000] WiFi Startup Cost (ra0): 4.610s
[   30.610000] device eth0.1 entered promiscuous mode
[   30.620000] device eth0 entered promiscuous mode
[   30.750000] br-lan: port 1(eth0.1) entered forwarding state
[   30.770000] br-lan: port 1(eth0.1) entered forwarding state
[   30.830000] simcom_wwan 1-1:1.5 wwan0: kevent 12 may have been dropped
[   30.910000] AddTxSType: already registered TxSType (PID = 32, Format = 0
[   30.920000] The 4-BSSID mode is enabled, the BSSID byte5 MUST be the multiple of 4
[   32.770000] br-lan: port 1(eth0.1) entered forwarding state
[   32.810000] device ra0 entered promiscuous mode
[   32.820000] br-lan: port 2(ra0) entered forwarding state
[   32.830000] br-lan: port 2(ra0) entered forwarding state
[   34.830000] br-lan: port 2(ra0) entered forwarding state
[   42.290000] gpio_rst_drv_open:Hello gpio_rst
[   43.430000] device br-lan entered promiscuous mode
[   61.750000] random: nonblocking pool is initialized
[  206.050000] ------------[ cut here ]------------
[  206.050000] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:303 dev_watchdog+0x1d8/0x25c()
[  206.070000] NETDEV WATCHDOG: wwan0 (simcom_wwan): transmit queue 0 timed out
[  206.080000] Modules linked in: qcserial pppoe ppp_async option l2tp_ppp iptable_nat usb_wwan simcom_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic nf_nat_pptp nf_nat_ipv4 nf_conntrack_pptp nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT ipt_MASQUERADE xt_time xt_tcpmss xt_statistic xt_state xt_recent xt_policy xt_nat xt_multiport xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_esp xt_ecn xt_conntrack xt_connmark xt_connbytes xt_TCPMSS xt_REDIRECT xt_NETMAP xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY usbserial usbnet spidev slhc rtc_ht1381 nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_proto_gre nf_nat_masquerade_ipv4 nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtcache nf_conntrack_proto_gre nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast nf_conntrack_amanda iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables crc_ccitt cdc_wdm arptable_filter arpt_mangle arp_tables mt7628 act_connmark act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress snd_soc_core i2c_dev ralink_eeprom_api ledtrig_usbdev ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables ip_gre gre ifb l2tp_netlink l2tp_core udp_tunnel ip6_udp_tunnel ipcomp6 xfrm6_tunnel xfrm6_mode_tunnel xfrm6_mode_transport xfrm6_mode_beet esp6 ah6 ipcomp xfrm4_tunnel xfrm4_mode_tunnel xfrm4_mode_transport xfrm4_mode_beet esp4 ah4 tunnel6 tunnel4 ip_tunnel tun snd_compress snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_rawmidi snd_seq_device snd_hwdep snd input_core soundcore af_key xfrm_user xfrm_ipcomp xfrm_algo vfat fat ntfs autofs4 regmap_spi regmap_i2c i2c_core regmap_core lzo_decompress lzo_compress ipv6 chainiv eseqiv crypto_wq sha1_generic krng rng md5 hmac ecb des_generic deflate zlib_inflate zlib_deflate cbc authenc arc4 crypto_blkcipher usb_storage leds_gpio ohci_platform ohci_hcd ehci_platform ehci_hcd sd_mod scsi_mod watchdog_drv spi_drv gpio_drv_reset gpio_drv usbcore nls_base usb_common mii aead crypto_hash
[  206.460000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.29 #23
[  206.470000] Stack : 00000000 00000000 00000000 00000000 803741f2 00000033 00000000 802001d8
          00000001 0000004d 802d235c 8032f5e3 00000000 80373420 8032f918 0000004d
          80373868 00000001 00000004 800476d4 00000003 80024498 0000012f 0000004d
          802d5860 80329c6c 00000000 00000000 00000000 00000000 00000000 00000000
          00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
          ...
[  206.540000] Call Trace:
[  206.550000] [<800142c8>] show_stack+0x50/0x84
[  206.560000] [<800245a0>] warn_slowpath_common+0x84/0xb4
[  206.570000] [<800245fc>] warn_slowpath_fmt+0x2c/0x38
[  206.580000] [<802001d8>] dev_watchdog+0x1d8/0x25c
[  206.580000] [<8004f1ac>] call_timer_fn.isra.38+0x24/0x84
[  206.600000] [<8004f9c4>] run_timer_softirq+0x1bc/0x1f8
[  206.610000] [<80026aa4>] __do_softirq+0xf8/0x230
[  206.610000] [<80026e10>] irq_exit+0x54/0x70
[  206.620000] [<80004830>] ret_from_irq+0x0/0x4
[  206.630000] [<800111ec>] r4k_wait_irqoff+0x18/0x20
[  206.640000] [<80043634>] cpu_startup_entry+0xf0/0x13c
[  206.650000] [<80349b5c>] start_kernel+0x42c/0x444
[  206.660000] 
[  206.660000] ---[ end trace fc45bfc800f1fcdb ]---
 
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这个只是warning而已啊,没有崩溃啥的
 
NETDEV WATCHDOG: wwan0 (simcom_wwan): transmit queue 0 timed out
 
这是原因

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