Backtrace

WARNING: CPU: 1 PID: 19 at drivers/net/wireless/mediatek/mt7601u/dma.c:306 mt7601u_dma_enqueue_tx+0x20d/0x230 [mt7601u]
Modules linked in: ccm mt7601u uinput snd_seq_dummy rfcomm snd_hrtimer nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac rtl8xxxu bnep mac80211 snd_sof_pci snd_sof_intel_hda_common snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof mei_hdcp snd_sof_xtensa_dsp intel_rapl_msr snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_codec_hdmi snd_soc_acpi_intel_match sunrpc snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_soc_acpi snd_hda_intel snd_intel_dspcfg soundwire_intel intel_pmc_bxt soundwire_generic_allocation intel_telemetry_pltdrv intel_punit_ipc
 intel_telemetry_core cfg80211 snd_soc_core vfat x86_pkg_temp_thermal intel_powerclamp fat coretemp kvm_intel kvm uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common btusb snd_usb_audio irqbypass rapl btrtl intel_cstate btbcm btintel snd_compress bluetooth snd_pcm_dmaengine soundwire_cadence videodev wdat_wdt i2c_i801 pcspkr lpc_ich rtsx_usb_ms i2c_smbus ecdh_generic memstick snd_hda_codec rfkill spi_pxa2xx_platform libarc4 ecc dw_dmac snd_usbmidi_lib snd_rawmidi snd_hda_core mc joydev ac97_bus snd_hwdep snd_seq idma64 intel_xhci_usb_role_switch roles snd_seq_device mei_me mei snd_pcm processor_thermal_device processor_thermal_rfim processor_thermal_mbox snd_timer processor_thermal_rapl soc_button_array snd intel_rapl_common intel_soc_dts_iosf int3400_thermal intel_hid dptf_power int3406_thermal sparse_keymap acpi_thermal_rel soundcore int3403_thermal int340x_thermal_zone zram ip_tables i915 hid_logitech_hidpp i2c_algo_bit hid_multitouch mmc_block
 drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel cec hid_logitech_dj drm ghash_clmulni_intel sdhci_pci serio_raw cqhci sdhci i2c_hid video pinctrl_broxton rtsx_usb_sdmmc mmc_core rtsx_usb fuse
CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.11.12-300.fc34.x86_64 #1
Hardware name: Hometech HT C14M/Aptio CRB, BIOS LC-BI-13.3-S133AR110-397-C 07/27/2017
RIP: 0010:mt7601u_dma_enqueue_tx+0x20d/0x230 [mt7601u]
Code: e8 e8 c9 8a c1 85 c0 75 38 41 8b 55 74 41 8b 85 b8 00 00 00 85 d2 75 27 01 d8 41 01 5d 70 41 89 85 b8 00 00 00 e9 64 fe ff ff <0f> 0b 4c 89 fe 4c 89 e7 41 be e4 ff ff ff e8 70 e8 ae c1 eb a5 0f
RSP: 0018:fffface1400e7a58 EFLAGS: 00010046
RAX: 0000000000000040 RBX: ffff93492e88e868 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff93492e97b000 RDI: ffff93482c8065b4
RBP: ffff93482c805f20 R08: 0000000000000202 R09: ffff934820116140
R10: 48477deb606c6add R11: ffff93482c806510 R12: ffff93482c8065b4
R13: ffff93492e90ae00 R14: 00000000c0028600 R15: 0000000000000282
FS:  0000000000000000(0000) GS:ffff93493cc80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f403227dd90 CR3: 0000000109ef2000 CR4: 00000000003506e0
Call Trace:
 mt7601u_tx+0x245/0x330 [mt7601u]
 ieee80211_tx_frags+0x15f/0x220 [mac80211]
 __ieee80211_tx+0x76/0x140 [mac80211]
 ieee80211_tx+0xc7/0x110 [mac80211]
 __ieee80211_subif_start_xmit+0x8a6/0xe80 [mac80211]
 ? update_load_avg+0x7a/0x5c0
 ? enqueue_entity+0x165/0x7b0
 ? csum_partial+0xd/0x20
 ? __skb_checksum+0x6c/0x2e0
 ieee80211_subif_start_xmit+0x3b/0x2d0 [mac80211]
 ? skb_checksum+0x22/0x30
 ? skb_send_sock_locked+0x1e0/0x1e0
 ? skb_checksum_help+0xa6/0x120
 dev_hard_start_xmit+0xca/0x1e0
 sch_direct_xmit+0xeb/0x2f0
 __qdisc_run+0x149/0x550
 net_tx_action+0x10d/0x230
 __do_softirq+0xd0/0x28f
 run_ksoftirqd+0x26/0x40
 smpboot_thread_fn+0xc5/0x160
 ? smpboot_register_percpu_thread+0xf0/0xf0
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x22/0x30