After upgrading to 1907-rc1, the ath9k probability caused the system to restart. The crash information is as follows
594251] CPU: 0 PID: 4160 Comm: sh Not tainted 4.14.151 #0
[ 87.600186] task: 87d2e760 task.stack: 86014000
[ 87.604860] $ 0 : 00000000 0045dd41 00000001 86b09000
[ 87.610262] $ 4 : 81109070 00000001 0001df6e 0001df6f
[ 87.615664] $ 8 : 00000000 876a3380 00000010 2d6d6970
[ 87.621068] $12 : 8788f28c 00000040 0000000a 00000000
[ 87.626469] $16 : 86b0b000 0000001a 01400000 805c0000
[ 87.631873] $20 : 86336080 fffffff8 00000001 805c0000
[ 87.637276] $24 : 00000010 8007b6e0
[ 87.642679] $28 : 86014000 86015d90 86015dd8 8015d410
[ 87.648082] Hi : 00000001
[ 87.651056] Lo : 00000043
[ 87.654041] epc : 8015d41c getname_kernel+0x48/0xf4
[ 87.659260] ra : 8015d410 getname_kernel+0x3c/0xf4
[ 87.664470] Status: 1000fc03 KERNEL EXL IE
[ 87.668790] Cause : d080841c (ExcCode 07)
[ 87.672929] PrId : 00019374 (MIPS 24Kc)
[ 87.676977] Modules linked in: ath9k ath9k_common rt2800usb rt2800lib pppoe ppp_async ath9k_hw ath10k_pci ath10k_core ath rt2x00usb rt2x00lib pppox ppp_mppe ppp_generic option nf_nat_pptp nf_conntrack_pptp nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_u32 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_hashlimit xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_IPMARK xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY wireguard usb_wwan ts_fsm ts_bm slhc sierra_net sierra rndis_host qmi_wwan nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_redirect nf_nat_proto_gre nf_nat_masquerade_ipv4 nf_nat_irc nf_conntrack_ipv4
[ 87.750046] nf_nat_ipv4 nf_nat_h323 nf_nat_amanda nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtcache nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_irc nf_conntrack_h323 nf_conntrack_broadcast ts_kmp nf_conntrack_amanda iptable_raw iptable_mangle iptable_filter ipt_ECN ipheth ip_tables huawei_cdc_ncm crc_ccitt cp210x compat_xtables compat cdc_wdm cdc_ncm cdc_ether cdc_acm fuse sch_teql sch_sfq sch_red sch_prio sch_pie sch_multiq sch_gred sch_fq sch_dsmark sch_codel sch_cbq em_text em_nbyte em_meta em_cmp act_simple act_police act_pedit act_ipt act_gact act_csum libcrc32c act_connmark nf_conntrack sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw
[ 87.823366] cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 GobiSerial usbserial GobiNet usbnet ip6_udp_tunnel udp_tunnel tun vfat fat ntfs nls_utf8 nls_iso8859_1 nls_cp437 sha1_generic ecb uas usb_storage uhci_hcd ohci_platform ohci_hcd ehci_platform sd_mod scsi_mod ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 exfat phy_ar7200_usb phy_ar7100_usb usbcore nls_base usb_common mii aead
[ 87.896587] crypto_null cryptomgr crc32c_generic crypto_hash
[ 87.902533] Process sh (pid: 4160, threadinfo=86014000, task=87d2e760, tls=77f9fefc)
[ 87.910520] Stack : fffffff8 8014d3ac 000007fc 00000000 86336100 84c92f00 8633609a 84c9b620
[ 87.919156] 805d0000 801533b0 84c9b620 8014d3ac 00000000 00000154 86336100 86336100
[ 87.927793] 84c92f00 8019b1d8 86015e8c 7fffffa9 00000000 00000000 866598c0 87d2e760
[ 87.936431] 00000001 80127b70 00000002 866598c0 00000000 00000001 00002017 86015e8c
[ 87.945069] 00000000 00000000 866598f8 00002817 00000000 86336080 00000006 84c9b600
[ 87.953706] ...
[ 87.956235] Call Trace:
[ 87.958768] [<8015d41c>] getname_kernel+0x48/0xf4
[ 87.963645] [<801533b0>] open_exec+0x14/0x60
[ 87.968082] [<8019b1d8>] load_elf_binary+0x1f8/0x13b8
[ 87.973303] [<8015346c>] search_binary_handler.part.50+0x70/0x21c
[ 87.979603] [<80154bac>] do_execveat_common+0x498/0x638
[ 87.985005] [<80154f70>] SyS_execve+0x34/0x48
[ 87.989517] [<8006fccc>] syscall_common+0x34/0x58
[ 87.994377] Code: 10400023 00408025 2e220ff1 <10400004> 2a221001 26040010 10000015 ae040000 1040000e
[ 88.004455]
[ 88.011070] ---[ end trace 84bbd9bbf3015126 ]---
[ 88.019145] Kernel panic - not syncing: Fatal exception
[ 88.026247] Rebooting in 3 seconds..
The OS information as following
NAME="OpenWrt"
VERSION="19.07.0-rc1"
ID="openwrt"
ID_LIKE="lede openwrt"
PRETTY_NAME="OpenWrt 19.07.0-rc1"
VERSION_ID="19.07.0-rc1"
HOME_URL="https://openwrt.org/"
BUG_URL="https://bugs.openwrt.org/"
SUPPORT_URL="https://forum.openwrt.org/"
BUILD_ID="r10649-c4fdb377a2"
OPENWRT_BOARD="ath79/nand"
OPENWRT_ARCH="mips_24kc"
OPENWRT_TAINTS="busybox"
OPENWRT_DEVICE_MANUFACTURER="OpenWrt"
OPENWRT_DEVICE_MANUFACTURER_URL="https://openwrt.org/"
OPENWRT_DEVICE_PRODUCT="Generic"
OPENWRT_DEVICE_REVISION="v0"
OPENWRT_RELEASE="OpenWrt 19.07.0-rc1 r10649-c4fdb377a2"
Does anyone have the same problem?