Comment 22 for bug 2051720

(In reply to Luiz Von Dentz from comment #16)
> Can you guys try with the following change:
>
> https://patchwork.kernel.org/project/bluetooth/patch/20240401193515.2525201-
> <email address hidden>/

I have the same issue and applied this patch to my kernel, but it seems to have broken the btintel module. I get a null pointer deref on boot and bluetooth is broken:

[ 2.317366] BUG: kernel NULL pointer dereference, address: 0000000000000070
[ 2.317699] #PF: supervisor read access in kernel mode
[ 2.317993] #PF: error_code(0x0000) - not-present page
[ 2.318280] PGD 0 P4D 0
[ 2.318283] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 2.318842] CPU: 3 PID: 185 Comm: kworker/u33:0 Not tainted 6.8.3-gentoo-dist #1
[ 2.318844] Hardware name: AZW SER/SER, BIOS SER7PRO_P5C8V30 09/15/2023
[ 2.318845] Workqueue: hci0 hci_alloc_dev_priv [bluetooth]
[ 2.319426] RIP: 0010:btintel_configure_setup+0x245/0x970 [btintel]
[ 2.320365] Code: 85 ff 75 a1 f0 41 80 8e 51 06 00 00 02 f0 41 80 8e 51 06 00 00 04 f0 41 80 8e 51 06 00 00 08 49 c7 86 38 17 00 00 b0 63 66 c1 <83> 7b 70 0a 75 7b 48 8b 83 d0 00 00 00 80 78 01 37 75 6e 0f 1f 44
[ 2.320691] RSP: 0018:ffffa215005cfd48 EFLAGS: 00010202
[ 2.321452] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080200006
[ 2.321760] RDX: 0000000080200007 RSI: ffffd3238404d700 RDI: 0000000000000000
[ 2.322437] RBP: ffff91a940ccc6c8 R08: 0000000080200007 R09: 0000000080200006
[ 2.322438] R10: 0000000000000001 R11: 0000000000000000 R12: ffff91a940ccc6d0
[ 2.322439] R13: ffff91a947f50c00 R14: ffff91a940ccc000 R15: ffff91a940ccca88
[ 2.322441] FS: 0000000000000000(0000) GS:ffff91af820c0000(0000) knlGS:0000000000000000
[ 2.323737] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.323739] CR2: 0000000000000070 CR3: 000000010dfa2000 CR4: 0000000000f50ef0
[ 2.323740] PKRU: 55555554
[ 2.323740] Call Trace:
[ 2.323743] <TASK>
[ 2.326248] ? __die_body+0x68/0xb0
[ 2.326253] ? page_fault_oops+0x3a3/0x400
[ 2.326256] ? exc_page_fault+0x60/0xf0
[ 2.326265] ? asm_exc_page_fault+0x26/0x30
[ 2.326269] ? btintel_configure_setup+0x245/0x970 [btintel]
[ 2.328091] ? btintel_configure_setup+0x16c/0x970 [btintel]
[ 2.328093] ? __ia32_compat_sys_sysinfo+0x230/0x270
[ 2.329006] hci_dev_open_sync+0x166/0x1610 [bluetooth]
[ 2.329013] ? srso_alias_return_thunk+0x5/0xfbef5
[ 2.329015] ? srso_alias_return_thunk+0x5/0xfbef5
[ 2.329016] ? srso_alias_return_thunk+0x5/0xfbef5
[ 2.329018] hci_alloc_dev_priv+0x164e/0x1bc0 [bluetooth]
[ 2.329023] process_scheduled_works+0x24b/0x450
[ 2.329026] worker_thread+0x2c3/0x420
[ 2.329028] ? __pfx_worker_thread+0x10/0x10
[ 2.329030] kthread+0xe8/0x110
[ 2.329032] ? __pfx_kthread+0x10/0x10
[ 2.329033] ret_from_fork+0x37/0x50
[ 2.329036] ? __pfx_kthread+0x10/0x10
[ 2.329038] ret_from_fork_asm+0x1b/0x30
[ 2.329043] </TASK>
[ 2.329043] Modules linked in: amdxcp(+) ac97_bus(+) iwlwifi(+) snd_hda_codec(+) btusb snd_pcm_dmaengine gpu_sched vfat btbcm snd_pci_ps drm_suballoc_helper btintel i2c_algo_bit fat snd_rpl_pci_acp6x kvm(+) drm_ttm_helper snd_hda_core snd_acp_pci btrtl ttm snd_acp_legacy_common btmtk snd_pci_acp6x irqbypass drm_exec snd_hwdep snd_pci_acp5x snd_pcm drm_display_helper bluetooth snd_rn_pci_acp3x wmi_bmof cfg80211 snd_timer snd_acp_config rapl cec snd_soc_acpi snd pcspkr drm_buddy soundcore i2c_piix4 k10temp snd_pci_acp3x rfkill amd_pmc fuse loop nfnetlink crct10dif_pclmul crc32_pclmul crc32c_intel nvme polyval_clmulni polyval_generic ghash_clmulni_intel thunderbolt sha512_ssse3 sha256_ssse3 sha1_ssse3 nvme_core amd_sfh ccp sp5100_tco r8169 nvme_auth realtek video wmi i2c_hid_acpi i2c_hid serio_raw
[ 2.329083] CR2: 0000000000000070
[ 2.329085] ---[ end trace 0000000000000000 ]---
[ 2.329087] RIP: 0010:btintel_configure_setup+0x245/0x970 [btintel]
[ 2.329089] Code: 85 ff 75 a1 f0 41 80 8e 51 06 00 00 02 f0 41 80 8e 51 06 00 00 04 f0 41 80 8e 51 06 00 00 08 49 c7 86 38 17 00 00 b0 63 66 c1 <83> 7b 70 0a 75 7b 48 8b 83 d0 00 00 00 80 78 01 37 75 6e 0f 1f 44
[ 2.329090] RSP: 0018:ffffa215005cfd48 EFLAGS: 00010202
[ 2.329091] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080200006
[ 2.329092] RDX: 0000000080200007 RSI: ffffd3238404d700 RDI: 0000000000000000
[ 2.329093] RBP: ffff91a940ccc6c8 R08: 0000000080200007 R09: 0000000080200006
[ 2.329093] R10: 0000000000000001 R11: 0000000000000000 R12: ffff91a940ccc6d0
[ 2.329094] R13: ffff91a947f50c00 R14: ffff91a940ccc000 R15: ffff91a940ccca88
[ 2.329095] FS: 0000000000000000(0000) GS:ffff91af820c0000(0000) knlGS:0000000000000000
[ 2.329096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.329096] CR2: 0000000000000070 CR3: 000000010dfa2000 CR4: 0000000000f50ef0
[ 2.329097] PKRU: 55555554
[ 2.329098] note: kworker/u33:0[185] exited with irqs disabled