On 03.06.24 22:03, Mike wrote:
On 29.05.24 11:06, Thorsten Leemhuis wrote:
Might be a good idea to share it, the developers might want to confirm it's really the same bug.
I'm attaching the stacktrace [1] and decodecode [2] at the end, generated on 6.1.92 vanilla+patch (1.). [...] I understand that 6.9-rc5[1] worked fine, but I guess it will take some time to be included in Debian stable, so having a patch for 6.1.x will be much appreciated. I do not have the time to follow the vanilla (latest) release as is likely the case for many other Linux users.
Let me know if there's anything else useful I can do for you. Thank you,
Still no reaction from the bluetooth developers. Guess they are busy and/or do not care about 6.1.y. In that case:
@Greg: do you might have an idea how the 6.1.y commit a13f316e90fdb1 ("Bluetooth: hci_conn: Consolidate code for aborting connections") might cause this or if it's missing some per-requisite? If not I wonder if reverting that patch from 6.1.y might be the best move to resolve this regression. Mike earlier in https://lore.kernel.org/all/c947e600-e126-43ea-9530-0389206bef5e@gmail.com/ confirmed that this fixed the problem in tests. Jeremy (who started the thread and afaics has the same problem) did not reply.
Ciao, Thorsten
[1] 2024-06-03T21:04:49.730983+02:00 mike kernel: [ 24.110172] kernel BUG at lib/list_debug.c:56! 2024-06-03T21:04:49.730984+02:00 mike kernel: [ 24.110181] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI 2024-06-03T21:04:49.730985+02:00 mike kernel: [ 24.110184] CPU: 2 PID: 868 Comm: kworker/u65:2 Not tainted 6.1.92 #2 2024-06-03T21:04:49.730985+02:00 mike kernel: [ 24.110187] Hardware name: Micro-Star International Co., Ltd. MS-7B93/MPG X570 GAMING PRO CARBON WIFI (MS-7B93), BIOS 1.M0 04/02/2024 2024-06-03T21:04:49.730986+02:00 mike kernel: [ 24.110191] Workqueue: hci0 hci_cmd_sync_work [bluetooth] 2024-06-03T21:04:49.730986+02:00 mike kernel: [ 24.110234] RIP: 0010:__list_del_entry_valid.cold+0x4b/0x6f 2024-06-03T21:04:49.730987+02:00 mike kernel: [ 24.110240] Code: fe ff 0f 0b 48 89 f2 48 89 fe 48 c7 c7 c0 2d fa a6 e8 07 a1 fe ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 88 2d fa a6 e8 f3 a0 fe ff <0f> 0b 48 89 fe 48 c7 c7 50 2d fa a6 e8 e2 a0 fe ff 0f 0b 48 89 fe 2024-06-03T21:04:49.730987+02:00 mike kernel: [ 24.110243] RSP: 0018:ffffb5fe04863de0 EFLAGS: 00010246 2024-06-03T21:04:49.730988+02:00 mike kernel: [ 24.110247] RAX: 000000000000004e RBX: ffff9bff53430800 RCX: 0000000000000027 2024-06-03T21:04:49.730988+02:00 mike kernel: [ 24.110249] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff9c064eaa03a0 2024-06-03T21:04:49.730988+02:00 mike kernel: [ 24.110252] RBP: ffff9bff4d2ce000 R08: 0000000000000000 R09: ffffb5fe04863c78 2024-06-03T21:04:49.730989+02:00 mike kernel: [ 24.110254] R10: 0000000000000003 R11: ffff9c066f2fc3e8 R12: ffff9bff4d2ce000 2024-06-03T21:04:49.730997+02:00 mike kernel: [ 24.110256] R13: ffff9bff4d2ce770 R14: ffff9bff62e919c0 R15: dead000000000100 2024-06-03T21:04:49.730997+02:00 mike kernel: [ 24.110259] FS: 0000000000000000(0000) GS:ffff9c064ea80000(0000) knlGS:0000000000000000 2024-06-03T21:04:49.730997+02:00 mike kernel: [ 24.110262] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 2024-06-03T21:04:49.730998+02:00 mike kernel: [ 24.110265] CR2: 000055ff08f14638 CR3: 0000000169804000 CR4: 0000000000350ee0 2024-06-03T21:04:49.730998+02:00 mike kernel: [ 24.110268] Call Trace: 2024-06-03T21:04:49.730999+02:00 mike kernel: [ 24.110270] <TASK> 2024-06-03T21:04:49.730999+02:00 mike kernel: [ 24.110273] ? __die_body.cold+0x1a/0x1f 2024-06-03T21:04:49.730999+02:00 mike kernel: [ 24.110278] ? die+0x2a/0x50 2024-06-03T21:04:49.731000+02:00 mike kernel: [ 24.110283] ? do_trap+0xc5/0x110 2024-06-03T21:04:49.731000+02:00 mike kernel: [ 24.110287] ? __list_del_entry_valid.cold+0x4b/0x6f 2024-06-03T21:04:49.731000+02:00 mike kernel: [ 24.110293] ? do_error_trap+0x6a/0x90 2024-06-03T21:04:49.731001+02:00 mike kernel: [ 24.110296] ? __list_del_entry_valid.cold+0x4b/0x6f 2024-06-03T21:04:49.731002+02:00 mike kernel: [ 24.110301] ? exc_invalid_op+0x4c/0x60 2024-06-03T21:04:49.731002+02:00 mike kernel: [ 24.110305] ? __list_del_entry_valid.cold+0x4b/0x6f 2024-06-03T21:04:49.731002+02:00 mike kernel: [ 24.110309] ? asm_exc_invalid_op+0x16/0x20 2024-06-03T21:04:49.731003+02:00 mike kernel: [ 24.110316] ? __list_del_entry_valid.cold+0x4b/0x6f 2024-06-03T21:04:49.731003+02:00 mike kernel: [ 24.110321] hci_conn_del+0x136/0x3e0 [bluetooth] 2024-06-03T21:04:49.731003+02:00 mike kernel: [ 24.110357] hci_abort_conn_sync+0xaa/0x230 [bluetooth] 2024-06-03T21:04:49.731004+02:00 mike kernel: [ 24.110395] ? srso_return_thunk+0x5/0x10 2024-06-03T21:04:49.731004+02:00 mike kernel: [ 24.110399] ? abort_conn_sync+0x3d/0x70 [bluetooth] 2024-06-03T21:04:49.731004+02:00 mike kernel: [ 24.110435] hci_cmd_sync_work+0xa2/0x150 [bluetooth] 2024-06-03T21:04:49.731005+02:00 mike kernel: [ 24.110471] process_one_work+0x1c7/0x380 2024-06-03T21:04:49.731005+02:00 mike kernel: [ 24.110477] worker_thread+0x4d/0x380 2024-06-03T21:04:49.731005+02:00 mike kernel: [ 24.110482] ? rescuer_thread+0x3a0/0x3a0 2024-06-03T21:04:49.731006+02:00 mike kernel: [ 24.110486] kthread+0xda/0x100 2024-06-03T21:04:49.731006+02:00 mike kernel: [ 24.110490] ? kthread_complete_and_exit+0x20/0x20 2024-06-03T21:04:49.731006+02:00 mike kernel: [ 24.110494] ret_from_fork+0x22/0x30 2024-06-03T21:04:49.731007+02:00 mike kernel: [ 24.110503] </TASK> 2024-06-03T21:04:49.731007+02:00 mike kernel: [ 24.110505] Modules linked in: rfcomm snd_seq_dummy snd_hrtimer snd_seq snd_seq_device xt_CHECKSUM tun uhid bridge stp llc qrtr cpufreq_powersave cpufreq_userspace cpufreq_conservative cpufreq_ondemand cmac algif_hash algif_skcipher af_alg bnep uinput nft_chain_nat xt_MASQUERADE nf_nat xt_LOG nf_log_syslog xt_mac ipt_REJECT nf_reject_ipv4 xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_tcpudp xt_pkttype nft_compat sunrpc binfmt_misc nf_tables nfnetlink pktcdvd nls_ascii nls_cp437 vfat fat snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi intel_rapl_msr intel_rapl_common edac_mce_amd btusb snd_hda_intel btrtl snd_intel_dspcfg btbcm snd_intel_sdw_acpi btintel kvm_amd iwlmvm btmtk snd_hda_codec ccp bluetooth mac80211 snd_hda_core libarc4 snd_hwdep jitterentropy_rng snd_pcm kvm snd_timer irqbypass iwlwifi drbg snd sp5100_tco rapl wmi_bmof soundcore ansi_cprng k10temp watchdog cfg80211 ecdh_generic ecc rfkill joydev evdev button acpi_cpufreq sg msr 2024-06-03T21:04:49.731007+02:00 mike kernel: [ 24.110606] dm_crypt loop fuse efi_pstore configfs ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 btrfs blake2b_generic xor raid6_pq zstd_compress libcrc32c crc32c_generic efivarfs linear dm_mirror dm_region_hash dm_log hid_logitech_hidpp hid_logitech_dj hid_generic dm_mod raid1 usbhid hid md_mod amdgpu drm_ttm_helper ttm video crc32_pclmul gpu_sched uas crc32c_intel usb_storage sr_mod drm_buddy sd_mod ghash_clmulni_intel cdrom sha512_ssse3 drm_display_helper sha512_generic drm_kms_helper sha256_ssse3 nvme ahci sha1_ssse3 xhci_pci nvme_core libahci drm xhci_hcd t10_pi aesni_intel libata crypto_simd cec cryptd crc64_rocksoft_generic usbcore igb rc_core i2c_piix4 crc64_rocksoft scsi_mod crc_t10dif crct10dif_generic usb_common dca crct10dif_pclmul scsi_common i2c_algo_bit crc64 crct10dif_common wmi 2024-06-03T21:04:49.731008+02:00 mike kernel: [ 24.110695] ---[ end trace 0000000000000000 ]---
[2] 2024-06-03T21:04:49.731009+02:00 mike kernel: [ 24.243204] Code: fe ff 0f 0b 48 89 f2 48 89 fe 48 c7 c7 c0 2d fa a6 e8 07 a1 fe ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 88 2d fa a6 e8 f3 a0 fe ff <0f> 0b 48 89 fe 48 c7 c7 50 2d fa a6 e8 e2 a0 fe ff 0f 0b 48 89 fe All code ======== 0: fe (bad) 1: ff 0f decl (%rdi) 3: 0b 48 89 or -0x77(%rax),%ecx 6: f2 48 89 fe repnz mov %rdi,%rsi a: 48 c7 c7 c0 2d fa a6 mov $0xffffffffa6fa2dc0,%rdi 11: e8 07 a1 fe ff call 0xfffffffffffea11d 16: 0f 0b ud2 18: 48 89 fe mov %rdi,%rsi 1b: 48 89 ca mov %rcx,%rdx 1e: 48 c7 c7 88 2d fa a6 mov $0xffffffffa6fa2d88,%rdi 25: e8 f3 a0 fe ff call 0xfffffffffffea11d 2a:* 0f 0b ud2 <-- trapping instruction 2c: 48 89 fe mov %rdi,%rsi 2f: 48 c7 c7 50 2d fa a6 mov $0xffffffffa6fa2d50,%rdi 36: e8 e2 a0 fe ff call 0xfffffffffffea11d 3b: 0f 0b ud2 3d: 48 89 fe mov %rdi,%rsi
Code starting with the faulting instruction
0: 0f 0b ud2 2: 48 89 fe mov %rdi,%rsi 5: 48 c7 c7 50 2d fa a6 mov $0xffffffffa6fa2d50,%rdi c: e8 e2 a0 fe ff call 0xfffffffffffea0f3 11: 0f 0b ud2 13: 48 89 fe mov %rdi,%rsi