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Netgear A8000 kernel oops on 6.12.13 (6.12.13 had a bug, patch is going in for mt7921u driver) #577

@salahcoronya

Description

@salahcoronya

Since upgrading to 6.12.13, I got the following OOPS:

[   32.098574] BUG: kernel NULL pointer dereference, address: 0000000000000400
[   32.098620] #PF: supervisor read access in kernel mode
[   32.098634] #PF: error_code(0x0000) - not-present page
[   32.098647] PGD 0 P4D 0 
[   32.098665] Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
[   32.098683] CPU: 0 UID: 0 PID: 470 Comm: mt76-usb-rx phy Not tainted 6.12.13-gentoo-dist #1
[   32.098703] Hardware name:  /AMD HUDSON-M1, BIOS 4.6.4 11/15/2011
[   32.098717] RIP: 0010:mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib]
[   32.098752] Code: fe 40 04 77 56 48 81 c5 84 06 00 00 48 8b 44 eb 08 48 85 c0 74 26 84 d2 75 22 f6 80 bc 00 00 00 01 74 24 48 8b 80 78 03 00 00 <48> 8b 80 00 04 00 00 48 85 c0 74 11 48 05 e0 00 00 00 48 83 c4 08
[   32.098776] RSP: 0018:ffffa147c055fd98 EFLAGS: 00010202
[   32.098792] RAX: 0000000000000000 RBX: ffff8e9ecb652000 RCX: 0000000000000000
[   32.098806] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8e9ecb652000
[   32.098819] RBP: 0000000000000685 R08: ffff8e9ec6570000 R09: 0000000000000000
[   32.098832] R10: ffff8e9ecd2ca000 R11: ffff8e9f22a217c0 R12: 0000000038010119
[   32.098845] R13: 0000000080843801 R14: ffff8e9ec6570000 R15: ffff8e9ecb652000
[   32.098860] FS:  0000000000000000(0000) GS:ffff8e9f22a00000(0000) knlGS:0000000000000000
[   32.098876] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.098889] CR2: 0000000000000400 CR3: 000000000d2ea000 CR4: 00000000000006f0
[   32.098903] Call Trace:
[   32.098918]  <TASK>
[   32.098932]  ? __die_body.cold+0x19/0x27
[   32.098955]  ? page_fault_oops+0x15a/0x2f0
[   32.098975]  ? search_module_extables+0x19/0x60
[   32.098995]  ? search_bpf_extables+0x5f/0x80
[   32.099012]  ? exc_page_fault+0x7e/0x180
[   32.099030]  ? asm_exc_page_fault+0x26/0x30
[   32.099054]  ? mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib]
[   32.099084]  mt7921_queue_rx_skb+0x1c6/0xaa0 [mt7921_common]
[   32.099114]  mt76u_alloc_queues+0x784/0x810 [mt76_usb]
[   32.099140]  ? __pfx___mt76_worker_fn+0x10/0x10 [mt76]
[   32.099172]  __mt76_worker_fn+0x4f/0x80 [mt76]
[   32.099203]  kthread+0xd2/0x100
[   32.099221]  ? __pfx_kthread+0x10/0x10
[   32.099237]  ret_from_fork+0x34/0x50
[   32.099254]  ? __pfx_kthread+0x10/0x10
[   32.099269]  ret_from_fork_asm+0x1a/0x30
[   32.099290]  </TASK>
[   32.099300] Modules linked in: 8021q garp mrp nf_conntrack_netbios_ns nf_conntrack_broadcast nft_masq 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 bridge stp llc nf_tables ip6table_filter ip6_tables iptable_filter ip_tables amdgpu bnep amdxcp gpu_sched drm_exec drm_buddy at24 kvm_amd mt7921u mt792x_usb mt7921_common rt2800pci rt2800mmio mt792x_lib rt2800lib rt2x00pci mt76_connac_lib rt2x00mmio mt76_usb rt2x00lib mt76 kvm r8153_ecm cdc_ether usbnet mac80211 pcspkr acpi_cpufreq r8169 eeprom_93cx6 k10temp realtek libarc4 usblp snd_hda_codec_realtek btusb snd_hda_codec_generic btrtl snd_hda_scodec_component i2c_piix4 btintel snd_hda_codec_hdmi snd_hda_intel i2c_smbus btbcm btmtk snd_intel_dspcfg radeon snd_intel_sdw_acpi i2c_algo_bit cfg80211 snd_hda_codec bluetooth
[   32.099538]  drm_suballoc_helper drm_ttm_helper r8152 mii snd_hda_core rfkill ttm snd_hwdep drm_display_helper cec snd_pcm video wmi snd_timer snd soundcore vfat fat joydev loop fuse nfnetlink sha512_ssse3 sha256_ssse3 ata_generic pata_acpi sha1_ssse3 serio_raw sp5100_tco pata_atiixp
[   32.099706] CR2: 0000000000000400
[   32.099719] ---[ end trace 0000000000000000 ]---
[   32.099730] RIP: 0010:mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib]
[   32.099758] Code: fe 40 04 77 56 48 81 c5 84 06 00 00 48 8b 44 eb 08 48 85 c0 74 26 84 d2 75 22 f6 80 bc 00 00 00 01 74 24 48 8b 80 78 03 00 00 <48> 8b 80 00 04 00 00 48 85 c0 74 11 48 05 e0 00 00 00 48 83 c4 08
[   32.099781] RSP: 0018:ffffa147c055fd98 EFLAGS: 00010202
[   32.099795] RAX: 0000000000000000 RBX: ffff8e9ecb652000 RCX: 0000000000000000
[   32.099808] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8e9ecb652000
[   32.099821] RBP: 0000000000000685 R08: ffff8e9ec6570000 R09: 0000000000000000
[   32.099833] R10: ffff8e9ecd2ca000 R11: ffff8e9f22a217c0 R12: 0000000038010119
[   32.099846] R13: 0000000080843801 R14: ffff8e9ec6570000 R15: ffff8e9ecb652000
[   32.099858] FS:  0000000000000000(0000) GS:ffff8e9f22a00000(0000) knlGS:0000000000000000
[   32.099873] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.099885] CR2: 0000000000000400 CR3: 000000000d2ea000 CR4: 00000000000006f0
[   32.099898] note: mt76-usb-rx phy[470] exited with irqs disabled

I have 2 of these adapters, both in AP mode - one is a 5 GHz AP, the other a 6GHz AP. Hostapd is still responsive but cannot be killed even with SIGKILL. 2.4 and 5 GHz continue to work, but 6 GHz does not. The first shutdown/unplug of the network adapters did not resolve it, but the 2nd try worked.

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