Problem kernel panic

## Booting image at 9f020000 ...
   Uncompressing Kernel Image ... OK

Starting kernel ...

[    0.000000] Linux version 4.4.35 (gcc version 5.4.0 (LEDE GCC 5.4.0 r2321) ) #0 Wed Nov 30 17:20:32 2016
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019374 (MIPS 24Kc)
[    0.000000] SoC: Qualcomm Atheros QCA9533 ver 2 rev 0
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 02000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] No valid device tree found, continuing without
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 8128
[    0.000000] Kernel command line:  board=TL-WA855RE-v1  console=ttyS0,115200 rootfstype=squashfs,jffs2 noinitrd
[    0.000000] PID hash table entries: 128 (order: -3, 512 bytes)
[    0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 28260K/32768K available (2539K kernel code, 154K rwdata, 576K rodata, 308K init, 193K bss, 4508K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:51
[    0.000000] Clocks: CPU:550.000MHz, DDR:397.167MHz, AHB:198.583MHz, Ref:25.000MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6950037990 ns
[    0.000010] sched_clock: 32 bits at 275MHz, resolution 3ns, wraps every 7809031678ns
[    0.008242] Calibrating delay loop... 366.18 BogoMIPS (lpj=1830912)
[    0.071067] pid_max: default: 32768 minimum: 301
[    0.076091] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.083081] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.093950] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.105253] NET: Registered protocol family 16
[    0.111786] MIPS: machine is TP-LINK TL-WA855RE v1
[    0.351723] clocksource: Switched to clocksource MIPS
[    0.358790] NET: Registered protocol family 2
[    0.364403] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.371844] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.378567] TCP: Hash tables configured (established 1024 bind 1024)
[    0.385425] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.391609] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.398661] NET: Registered protocol family 1
[    0.408734] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.415402] Crashlog allocated RAM at address 0x1f00000
[    0.438363] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.444610] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.458246] io scheduler noop registered
[    0.462476] io scheduler deadline registered (default)
[    0.468165] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    0.475428] console [ttyS0] disabled
[    0.499368] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 1562500) is a 16550A
[    0.508480] console [ttyS0] enabled
[    0.508480] console [ttyS0] enabled
[    0.516042] bootconsole [early0] disabled
[    0.516042] bootconsole [early0] disabled
[    0.528760] m25p80 spi0.0: found w25q32, expected m25p80
[    0.534362] m25p80 spi0.0: w25q32 (4096 Kbytes)
[    0.540530] 5 tp-link partitions found on MTD device spi0.0
[    0.546366] Creating 5 MTD partitions on "spi0.0":
[    0.551326] 0x000000000000-0x000000020000 : "u-boot"
[    0.558320] 0x000000020000-0x0000001341c4 : "kernel"
[    0.565613] 0x0000001341c4-0x0000003f0000 : "rootfs"
[    0.572889] mtd: device 2 (rootfs) set to be root filesystem
[    0.578831] 1 squashfs-split partitions found on MTD device rootfs
[    0.585303] 0x000000370000-0x0000003f0000 : "rootfs_data"
[    0.593015] 0x0000003f0000-0x000000400000 : "art"
[    0.599885] 0x000000020000-0x0000003f0000 : "firmware"
[    0.632414] libphy: ag71xx_mdio: probed
[    1.224699] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.1:04 [uid=004dd042, driver=Generic PHY]
[    1.235035] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:MII
[    1.242655] NET: Registered protocol family 17
[    1.247409] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[    1.260669] 8021q: 802.1Q VLAN Support v1.8
[    1.275384] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
[    1.285350] Freeing unused kernel memory: 308K (80393000 - 803e0000)
[    2.324315] init: Console is alive
[    2.328108] init: - watchdog -
[    3.199177] init: - preinit -
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
[    6.405267] eth0: link up (100Mbps/Full duplex)
[    7.100380] mount_root: jffs2 not ready yet, using temporary tmpfs overlay
[    7.112470] urandom-seed: Seed file not found (/etc/urandom.seed)
[    7.233928] eth0: link down
[    7.249561] procd: - early -
[    7.253627] procd: - watchdog -
[    7.815134] procd: - ubus -
[    7.951440] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.036895] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.046843] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.056329] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.066174] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.075629] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.085236] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.094897] random: ubusd: uninitialized urandom read (4 bytes read, 13 bits of entropy available)
[    8.104778] procd: - init -
Please press Enter to activate this console.
[    8.442614] Loading modules backported from Linux version wt-2016-10-03-1-g6fcb1a6
[    8.450453] Backport generated by backports.git backports-20160324-9-g0e38f5c
[    8.466060] nf_conntrack version 0.5.0 (446 buckets, 1784 max)
[    8.517409] xt_time: kernel timezone is -0000
[    8.546487] ip_tables: (C) 2000-2006 Netfilter Core Team
[    8.661411] Data bus error, epc == 80d9f778, ra == 80d9f774
[    8.667191] Oops[#1]:
[    8.669549] CPU: 0 PID: 394 Comm: kmodloader Not tainted 4.4.35 #0
[    8.675935] task: 81884f00 ti: 81b3a000 task.ti: 81b3a000
[    8.681510] $ 0   : 00000000 00000001 00000500 00000500
[    8.686948] $ 4   : b81143fc 000143fc 81be1ad0 00000004
[    8.692378] $ 8   : 00000001 7c7c3c7c 7c7c7c7c 7c7c7c7c
[    8.697808] $12   : 7c7c3c7c 00000013 00000000 7c7c7c3c
[    8.703237] $16   : 81b40010 00000000 00030000 00000300
[    8.708666] $20   : 00000400 00010000 00000004 000003ff
[    8.714096] $24   : 00000000 00000007                  
[    8.719526] $28   : 81b3a000 81b3ba40 81b3ba9c 80d9f774
[    8.724957] Hi    : 00000003
[    8.727932] Lo    : 000000ff
[    8.730979] epc   : 80d9f778 ath9k_hw_setup_statusring+0xdec/0x1df8 [ath9k_hw]
[    8.738453] ra    : 80d9f774 ath9k_hw_setup_statusring+0xde8/0x1df8 [ath9k_hw]
[    8.745905] Status: 1000d403    KERNEL EXL IE 
[    8.750252] Cause : 1080001c (ExcCode 07)
[    8.754392] PrId  : 00019374 (MIPS 24Kc)
[    8.758439] Modules linked in: ath9k(+) ath9k_common iptable_nat ath9k_hw ath nf_nat_ipv4 nf_conntrack_ipv4 mac80211 iptable_raw iptable_mangle iptable_filter ipt_REJECT ipt_MASQUERADE ip_tables cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_id xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_CT x_tables nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_nat nf_log_ipv4 nf_log_common nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack crc_ccitt compat ledtrig_heartbeat ledtrig_gpio gpio_button_hotplug
[    8.808776] Process kmodloader (pid: 394, threadinfo=81b3a000, task=81884f00, tls=779dce50)
[    8.817395] Stack : 00000000 80358b10 0000001a 00000013 00000000 00000007 00002710 00000018
      000003ff 80da0000 819ae000 81b40010 99999999 00000001 81b3bb2c 81b40438
      00000001 80d9e9cc 81b3a000 81b3bab0 800be238 81b40010 00020000 00000000
      00000220 80d9fa9c 81b40038 80d83b38 81bfe98a 8019af50 81b40010 81b40010
      00000000 000000c8 81b40010 81b40038 ffffffed 00000010 99999999 00000001
      ...
[    8.854385] Call Trace:
[    8.856933] [<80d9f778>] ath9k_hw_setup_statusring+0xdec/0x1df8 [ath9k_hw]
[    8.864062] [<80d9f774>] ath9k_hw_setup_statusring+0xde8/0x1df8 [ath9k_hw]
[    8.871169] 
[    8.872706] 
Code: 00c0f809  02002021  8e0201e4 <10530004> 26450018  14540002  26a55f18  26450018  240203e8 
[    8.883062] ---[ end trace 4425a80bdcf97c38 ]---
[    8.889460] Fatal exception: panic in 5 seconds
[   13.901732] Kernel panic - not syncing: Fatal exception
[   13.908461] Rebooting in 1 seconds..

Someone knows how I can fix it ??

You forgot to mention which router, which LEDE build?

Linux kernel version 4.4.35 is ancient and not present in any current LEDE build. Both master and 17.01 branches have 4.4.70 (and the earliest LEDE release 17.01.0 had 4.4.50...)

So, the problem might already be fixed. Do you get it with the current LEDE builds?

Is it a TL-WA855RE-v1 ?