Hi,
I've found what I feel might be a regression between Linux 6.1 and
6.5. For other reasons, I upgraded the kernel on my Debian 12
("bookworm", stale) laptop from the distribution 6.1.52 to the unstable
("sid") version, 6.5.3.
After the upgrade, I started to notice stuttering in my audio player, I
tracked it down and managed to correlate it with some kernel errors
related to the iwlwifi driver.
What's interesting is that this happens regardless of whether or not the
NIC is connected to a network. In at least one of the traces, the
computer was connected over a wire and wireless was not associated in
Network Manager.
Here's an example of the problem:
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Microcode SW error detected. Restarting 0x0.
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Start IWL Error Log Dump:
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Transport status: 0x0000004B, valid: 6
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Loaded firmware version: 73.35c0a2c6.0 ty-a0-gf-a0-73.ucode
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x000002F0 | trm_hw_status0
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | trm_hw_status1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x004DB676 | branchlink2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x004DAFCA | interruptlink1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x004DAFCA | interruptlink2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00016B8A | data1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000010 | data2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | data3
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x003CF2BA | beacon time
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x01AF1EAD | tsf low
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | tsf hi
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | time gp1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x01B06739 | time gp2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000001 | uCode revision type
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000049 | uCode version major
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x35C0A2C6 | uCode version minor
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000420 | hw version
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00C80002 | board version
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x80BBFF00 | hcmd
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00020000 | isr0
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | isr1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x48F04002 | isr2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00C3000C | isr3
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | isr4
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00220103 | last cmd Id
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00016B8A | wait_event
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | l2p_control
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | l2p_duration
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | l2p_mhvalid
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | l2p_addr_match
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000018 | lmpm_pmg_sel
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | timestamp
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x0000284C | flow_handler
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Start IWL Error Log Dump:
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Transport status: 0x0000004B, valid: 7
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x20103600 | ADVANCED_SYSASSERT
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | umac branchlink1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x8045F174 | umac branchlink2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x8047A13C | umac interruptlink1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | umac interruptlink2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x000000FF | umac data1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0xDEADBEEF | umac data2
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0xDEADBEEF | umac data3
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000049 | umac major
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x35C0A2C6 | umac minor
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x01B06733 | frame pointer
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0xC0886C0C | stack pointer
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x002B010D | last host cmd
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000000 | isr status reg
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: IML/ROM dump:
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000B03 | IML/ROM error/state
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00008510 | IML/ROM data1
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000080 | IML/ROM WFPM_AUTH_KEY_0
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Fseq Registers:
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x60000100 | FSEQ_ERROR_CODE
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00440007 | FSEQ_TOP_INIT_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00080009 | FSEQ_CNVIO_INIT_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x0000A652 | FSEQ_OTP_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000002 | FSEQ_TOP_CONTENT_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x4552414E | FSEQ_ALIVE_TOKEN
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00400410 | FSEQ_CNVI_ID
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00400410 | FSEQ_CNVR_ID
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00400410 | CNVI_AUX_MISC_CHIP
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00400410 | CNVR_AUX_MISC_CHIP
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00009061 | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00000061 | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00080009 | FSEQ_PREV_CNVIO_INIT_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00440005 | FSEQ_WIFI_FSEQ_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x00440007 | FSEQ_BT_FSEQ_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: 0x000000DC | FSEQ_CLASS_TP_VERSION
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: WRT: Collecting data: ini trigger 4 fired (delay=0ms).
sep 21 09:33:14 angela kernel: ieee80211 phy0: Hardware restart was requested
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: FW error in SYNC CMD SCAN_REQ_UMAC
sep 21 09:33:14 angela kernel: CPU: 7 PID: 1563 Comm: wpa_supplicant Tainted: G W 6.5.0-1-amd64 #1 Debian 6.5.3-1
sep 21 09:33:14 angela kernel: Hardware name: Framework Laptop (12th Gen Intel Core)/FRANMACP04, BIOS 03.06 11/10/2022
sep 21 09:33:14 angela kernel: Call Trace:
sep 21 09:33:14 angela kernel: <TASK>
sep 21 09:33:14 angela kernel: dump_stack_lvl+0x47/0x60
sep 21 09:33:14 angela kernel: iwl_trans_txq_send_hcmd+0x33d/0x450 [iwlwifi]
sep 21 09:33:14 angela kernel: ? __pfx_autoremove_wake_function+0x10/0x10
sep 21 09:33:14 angela kernel: iwl_trans_send_cmd+0x66/0x100 [iwlwifi]
sep 21 09:33:14 angela kernel: iwl_mvm_send_cmd+0x16/0x40 [iwlmvm]
sep 21 09:33:14 angela kernel: iwl_mvm_reg_scan_start+0x3f0/0x610 [iwlmvm]
sep 21 09:33:14 angela kernel: iwl_mvm_mac_hw_scan+0x4e/0x70 [iwlmvm]
sep 21 09:33:14 angela kernel: drv_hw_scan+0x98/0x150 [mac80211]
sep 21 09:33:14 angela kernel: __ieee80211_start_scan+0x255/0x6f0 [mac80211]
sep 21 09:33:14 angela kernel: ieee80211_request_scan+0x2f/0x50 [mac80211]
sep 21 09:33:14 angela kernel: rdev_scan+0x25/0xd0 [cfg80211]
sep 21 09:33:14 angela kernel: nl80211_trigger_scan+0x409/0x7e0 [cfg80211]
sep 21 09:33:14 angela kernel: genl_family_rcv_msg_doit.isra.0+0xe3/0x140
sep 21 09:33:14 angela kernel: genl_rcv_msg+0x1b1/0x2c0
sep 21 09:33:14 angela kernel: ? __pfx_nl80211_pre_doit+0x10/0x10 [cfg80211]
sep 21 09:33:14 angela kernel: ? __pfx_nl80211_trigger_scan+0x10/0x10 [cfg80211]
sep 21 09:33:14 angela kernel: ? __pfx_nl80211_post_doit+0x10/0x10 [cfg80211]
sep 21 09:33:14 angela kernel: ? __pfx_genl_rcv_msg+0x10/0x10
sep 21 09:33:14 angela kernel: netlink_rcv_skb+0x58/0x110
sep 21 09:33:14 angela kernel: genl_rcv+0x28/0x40
sep 21 09:33:14 angela kernel: netlink_unicast+0x19e/0x290
sep 21 09:33:14 angela kernel: netlink_sendmsg+0x254/0x4d0
sep 21 09:33:14 angela kernel: sock_sendmsg+0x93/0xa0
sep 21 09:33:14 angela kernel: ____sys_sendmsg+0x278/0x300
sep 21 09:33:14 angela kernel: ? copy_msghdr_from_user+0x7d/0xc0
sep 21 09:33:14 angela kernel: ___sys_sendmsg+0x9a/0xe0
sep 21 09:33:14 angela kernel: __sys_sendmsg+0x7a/0xd0
sep 21 09:33:14 angela kernel: do_syscall_64+0x5d/0xc0
sep 21 09:33:14 angela kernel: ? do_syscall_64+0x6c/0xc0
sep 21 09:33:14 angela kernel: ? do_syscall_64+0x6c/0xc0
sep 21 09:33:14 angela kernel: ? fpregs_assert_state_consistent+0x26/0x50
sep 21 09:33:14 angela kernel: ? exit_to_user_mode_prepare+0x40/0x1d0
sep 21 09:33:14 angela kernel: ? syscall_exit_to_user_mode+0x2b/0x40
sep 21 09:33:14 angela kernel: ? do_syscall_64+0x6c/0xc0
sep 21 09:33:14 angela kernel: ? do_syscall_64+0x6c/0xc0
sep 21 09:33:14 angela kernel: ? do_syscall_64+0x6c/0xc0
sep 21 09:33:14 angela kernel: ? do_syscall_64+0x6c/0xc0
sep 21 09:33:14 angela kernel: entry_SYSCALL_64_after_hwframe+0x6e/0xd8
sep 21 09:33:14 angela kernel: RIP: 0033:0x7fdbfbf29910
sep 21 09:33:14 angela kernel: Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d d1 fc 0c 00 00 74 17 b8 2e 00 00 00>
sep 21 09:33:14 angela kernel: RSP: 002b:00007ffedc261e78 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
sep 21 09:33:14 angela kernel: RAX: ffffffffffffffda RBX: 00005568b18cf900 RCX: 00007fdbfbf29910
sep 21 09:33:14 angela kernel: RDX: 0000000000000000 RSI: 00007ffedc261eb0 RDI: 0000000000000006
sep 21 09:33:14 angela kernel: RBP: 00005568b1949360 R08: 0000000000000004 R09: 0000000000000000
sep 21 09:33:14 angela kernel: R10: 00007ffedc261f94 R11: 0000000000000202 R12: 00005568b18cfbe0
sep 21 09:33:14 angela kernel: R13: 00007ffedc261eb0 R14: 0000000000000000 R15: 00007ffedc261f94
sep 21 09:33:14 angela kernel: </TASK>
sep 21 09:33:14 angela kernel: iwlwifi 0000:a6:00.0: Scan failed! ret -5
sep 21 09:33:14 angela kernel: ------------[ cut here ]------------
sep 21 09:33:14 angela kernel: WARNING: CPU: 15 PID: 133361 at net/mac80211/scan.c:423 __ieee80211_scan_completed+0x308/0x320 [mac80211]
sep 21 09:33:14 angela kernel: Modules linked in: cdc_mbim cdc_wdm xfrm_user xfrm_algo nvme_fabrics ctr ccm rfcomm cmac algif_hash algif_skcipher af_alg tls>
sep 21 09:33:14 angela kernel: nf_reject_ipv4 intel_uncore_frequency_common snd_hda_codec_idt snd_soc_acpi nf_reject_ipv6 x86_pkg_temp_thermal snd_hda_code>
sep 21 09:33:14 angela kernel: configfs ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 btrfs blake2b_generic dm_crypt dm_mod efivarfs raid10 raid456 as>
sep 21 09:33:14 angela kernel: CPU: 15 PID: 133361 Comm: kworker/u32:22 Tainted: G W 6.5.0-1-amd64 #1 Debian 6.5.3-1
sep 21 09:33:14 angela kernel: Hardware name: Framework Laptop (12th Gen Intel Core)/FRANMACP04, BIOS 03.06 11/10/2022
sep 21 09:33:14 angela kernel: Workqueue: phy0 ieee80211_scan_work [mac80211]
sep 21 09:33:14 angela kernel: RIP: 0010:__ieee80211_scan_completed+0x308/0x320 [mac80211]
sep 21 09:33:14 angela kernel: Code: 0a 00 48 85 c0 74 0c 48 8b 78 08 48 89 ee e8 6f 49 04 00 65 ff 0d 10 49 2a 3e 0f 85 b1 fe ff ff 0f 1f 44 00 00 e9 a7 fe>
sep 21 09:33:14 angela kernel: RSP: 0018:ffffb42640ab7dc8 EFLAGS: 00010246
sep 21 09:33:14 angela kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
sep 21 09:33:14 angela kernel: RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff9399481e8900
sep 21 09:33:14 angela kernel: RBP: ffff9399481e8900 R08: 0000000000000000 R09: 0000000000000000
sep 21 09:33:14 angela kernel: R10: 0000000000000001 R11: 0000000000000000 R12: ffff9399481e9b00
sep 21 09:33:14 angela kernel: R13: 0000000000000000 R14: ffff9399634ff335 R15: 0000000000000001
sep 21 09:33:14 angela kernel: FS: 0000000000000000(0000) GS:ffff93a0ef9c0000(0000) knlGS:0000000000000000
sep 21 09:33:14 angela kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
sep 21 09:33:14 angela kernel: CR2: 00005614e1215588 CR3: 00000008a8020000 CR4: 0000000000f50ee0
sep 21 09:33:14 angela kernel: PKRU: 55555554
sep 21 09:33:14 angela kernel: Call Trace:
sep 21 09:33:14 angela kernel: <TASK>
sep 21 09:33:14 angela kernel: ? __ieee80211_scan_completed+0x308/0x320 [mac80211]
sep 21 09:33:14 angela kernel: ? __warn+0x81/0x130
sep 21 09:33:14 angela kernel: ? __ieee80211_scan_completed+0x308/0x320 [mac80211]
sep 21 09:33:14 angela kernel: ? report_bug+0x191/0x1c0
sep 21 09:33:14 angela kernel: ? handle_bug+0x3c/0x80
sep 21 09:33:14 angela kernel: ? exc_invalid_op+0x17/0x70
sep 21 09:33:14 angela kernel: ? asm_exc_invalid_op+0x1a/0x20
sep 21 09:33:14 angela kernel: ? __ieee80211_scan_completed+0x308/0x320 [mac80211]
sep 21 09:33:14 angela kernel: ieee80211_scan_work+0x127/0x5d0 [mac80211]
sep 21 09:33:14 angela kernel: ? __schedule+0x3e7/0xb80
sep 21 09:33:14 angela kernel: process_one_work+0x1de/0x3f0
sep 21 09:33:14 angela kernel: worker_thread+0x51/0x390
sep 21 09:33:14 angela kernel: ? __pfx_worker_thread+0x10/0x10
sep 21 09:33:14 angela kernel: kthread+0xf4/0x130
sep 21 09:33:14 angela kernel: ? __pfx_kthread+0x10/0x10
sep 21 09:33:14 angela kernel: ret_from_fork+0x31/0x50
sep 21 09:33:14 angela kernel: ? __pfx_kthread+0x10/0x10
sep 21 09:33:14 angela kernel: ret_from_fork_asm+0x1b/0x30
sep 21 09:33:14 angela kernel: </TASK>
sep 21 09:33:14 angela kernel: ---[ end trace 0000000000000000 ]---
sep 21 09:33:14 angela wpa_supplicant[1563]: wlan0: CTRL-EVENT-SCAN-FAILED ret=-5
sep 21 09:33:15 angela kernel: iwlwifi 0000:a6:00.0: WFPM_UMAC_PD_NOTIFICATION: 0x1f
sep 21 09:33:15 angela kernel: iwlwifi 0000:a6:00.0: WFPM_LMAC2_PD_NOTIFICATION: 0x1f
sep 21 09:33:15 angela kernel: iwlwifi 0000:a6:00.0: WFPM_AUTH_KEY_0: 0x80
sep 21 09:33:15 angela kernel: iwlwifi 0000:a6:00.0: CNVI_SCU_SEQ_DATA_DW9: 0x0
sep 21 09:33:15 angela wpa_supplicant[1563]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=DRIVER type=WORLD
Thanks for any ideas!
--
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