Wi-Fi 6 AX201 not working on 5.15.0-23-generic #23-Ubuntu SMP Fri Mar 11 14:54:05 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

[James Campbell]

此问题存在于 HP ProBook 440 G8
描述：Ubuntu Jammy Jellyfish（开发分支）
版本：22.04

Wifi 适配器信息：
       描述：无线接口
       产品：Wi-Fi 6 AX201
       供应商：Intel Corporation
       物理 ID：14.3
       总线信息：pci@0000:00:14.3
       逻辑名称：wlp0s20f3
       版本：20
       序列号：28:d0:ea:21: 6a:a1
       宽度：64 位
       时钟：33MHz
       功能：bus_master cap_list 以太网物理无线
       配置：广播=yes driver=iwlwifi driverversion= 5.15.0- 23-generic firmware= 66.f1c864e0。0 QuZ-a0-jf-b0-66.u 延迟=0 链接=无组播=是无线=IEEE 802.11
       资源：iomemory:600-5ff irq:16 内存：600324c000-600324ffff

错误信息：
[60.882505] CPU：6 PID：630 通讯：wpa_supplicant 未污染 5.15.0-23-generic #23-Ubuntu
[60.882512] 硬件名称：HP HP ProBook 440 G8 Notebook PC/8807，BIOS T85 Ver. 01.06.03 08/26/2021
[ 60.882514] Call Trace:
[ 60.882517] <TASK>
[ 60.882521] show_stack+ 0x52/0x58
[ 60.882532] dump_stack_ lvl+0x4a/ 0x5f
[ 60.882541] dump_stack+ 0x10/0x12
[ 60.882545] iwl_trans_ txq_send_ hcmd_sync+ 0x345 /0x350 [iwlwifi]
[ 60.882582] ？wait_woken+ 0x70/0x70
[60.882589] iwl_trans_txq_send_hcmd + 0xaa/ 0x140 [iwlwifi]
[ 60.882619] iwl_trans_ send_cmd+ 0x84/0x110 [iwlwifi]
[ 60.882646] iwl_mvm_ send_cmd_ pdu+0x6d/ 0xc0 [iwlmvm]
[ 60.882675] iwl_mvm_ ppag_send_ cmd+0x1b5/ 0x270 [iwlmvm]
[ 60.882695] iwl_mvm_ up+0x656/ 0xa80 [iwlmvm]
[ 60.882716] ? __iwl_err。cold+0x25/ 0x2a [iwlwifi]
[ 60.882755] __iwl_mvm_ mac_start+ 0x2b/0x1a0 [iwlmvm]
[ 60.882777] iwl_mvm_ mac_start+ 0x5f/0xc0 [iwlmvm]
[ 60.882799] drv_start+0x4f/0xe0 [mac80211]
[ 60.882858] ieee80211_ do_open + 0x488/0x9c0 [ mac80211]
[60.882926]？ieee80211_ check_concurren t_iface+ 0x158/0x1c0 [mac80211]
[ 60.882987] ieee80211_ open+0x6c/ 0x90 [mac80211]
[ 60.883048] __dev_open+ 0xf0/0x1c0
[ 60.883054] __dev_change_ flags+0x1a3/ 0x220
[ 60.883058] dev_change_ flags+0x26/ 0x60
[ 60.883061] devinet_ ioctl+0x598/ 0x6f0
[60.883068]？netdev_name_node_lookup_rcu + 0x6b / 0x80 [ 60.883075
]？_copy_from_用户+0x2e/ 0x60
[60.883082] inet_ioctl+ 0x165/0x190
[60.883088] sock_do_ioctl+0x42/ 0x100
[60.883093]？do_readlinkat+ 0x10f/0x120
[60.883099] sock_ioctl+ 0xef/0x310
[60.883103]？do_syscall_ 64+0x69/ 0xc0
[ 60.883110] __x64_sys_ ioctl+0x91/ 0xc0
[ 60.883116] do_syscall_ 64+0x59/ 0xc0
[ 60.883120] ? do_syscall_ 64+0x69/ 0xc0
[ 60.883125] ？do_syscall_ 64+0x69/ 0xc0
[ 60.883129] ？syscall_exit_to_user_mode + 0x27/0x50 [ 60.883133
]？__x64_sys_ readlink+ 0x1e/0x30
[60.883137]？do_syscall_ 64+0x69/ 0xc0
[60.883142]？do_syscall_ 64+0x69/ 0xc0
[ 60.883147] entry_SYSCALL_ 64_after_ hwframe+ 0x44 /0xae
[ 60.883152] RIP: 0033:0x7f66c7592aff
[ 60.883158] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 77 1f 48 8b 44 24 18 64 48 2b 04
252316 00 [0SP:0] 0.0 :00007ffc16 8507c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 60.883168] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f66c7592aff
[ 60.883171] RDX: 00007ffc16850820 RSI: 0000000000008914 RDI: 0000000000000009
[ 60.883174] RBP: 0000000000000009 R08: 0000000000000000 R09: 000055e021909e90
[ 60.883176] R10: 0000000000000007 R11: 0000000000000246 R12: 000055e02190e028
[ 60.883178] R13: 0000000000000000 R14: 00007ffc16850820 R15: 0000000000000005
[ 60.883182] </TASK>
[ 60.883206] iwlwifi 0000:00 :14.3: 未能发送PER_PLATFORM_ANT_GAIN_ CMD (-5)
[60.894910] iwlwifi 0000:00:14.3: mac start retry 1
[61.068762] iwlwifi 0000:00:14.3: 检测到微码软件错误。重新启动 0x0。
[61.068863] iwlwifi 0000:00:14.3：启动 IWL 错误日志转储：
[61.068866] iwlwifi 0000:00:14.3：传输状态：0x0000004B，有效：6
[61.068871] iwlwifi 0000:00:14.3：加载的固件版本：66.f1c864e0.0 QuZ-a0- jf-b0-66。ucode
[61.068874] iwlwifi 0000:00:14.3:0x00000071 | NMI_INTERRUPT_ UMAC_FATAL
[61.068878] iwlwifi 0000:00:14.3:0x000022F0 | trm_hw_status0
[61.068881] iwlwifi 0000:00:14.3:0x00000000 | trm_hw_status1
[61.068883] iwlwifi 0000:00:14.3:0x004C2726 | branchlink2
[61.068886] iwlwifi 0000:00:14.3:0x004B974E | 中断
链接1 [61.068889] iwlwifi 0000:00:14.3:0x004B974E | 中断
链接2 [61.068891] iwlwifi 0000:00:14.3:0x004BD86E | 数据1
[61.068893] iwlwifi 0000:00:14.3:0x00001000 | 数据2 [ 61.068896
] iwlwifi 0000:00:14.3:0x00000000 | 数据3
[61.068898]iwlwifi 0000:00:14.3:0x00000000 | 信标时间
[61.068901] iwlwifi 0000:00:14.3:0x000215F2 | tsf 低
[61.068903] iwlwifi 0000:00:14.3:0x00000000 | tsf 嗨
[61.068906] iwlwifi 0000:00:14.3:0x00000000 | 时间
gp1 [61.068908] iwlwifi 0000:00:14.3:0x00026E8A | 时间 gp2
[61.068911] iwlwifi 0000:00:14.3:0x00000001 | uCode 修订类型
[61.068913] iwlwifi 0000:00:14.3:0x00000042 | uCode 主要版本
[61.068916] iwlwifi 0000:00:14.3:0xF1C864E0 | uCode 次要版本
[61.068919] iwlwifi 0000:00:14.3:0x00000351 | 硬件版本
[61.068921] iwlwifi 0000:00:14.3:0x18489004 | 板版
[61.068924] iwlwifi 0000:00:14.3:0x8045FD22 | hcmd
[61.068926]iwlwifi 0000:00:14.3:0x00020000 | isr0
[61.068928] iwlwifi 0000:00:14.3:0x00000000 | isr1
[61.068931] iwlwifi 0000:00:14.3:0x08F00002 | isr2
[61.068933] iwlwifi 0000:00:14.3:0x00C3400C | isr3
[61.068936] iwlwifi 0000:00:14.3:0x00000000 | isr4
[61.068938] iwlwifi 0000:00:14.3:0x00000000 | 最后一个 cmd Id
[61.068941] iwlwifi 0000:00:14.3:0x004BD86E | wait_event
[61.068943] iwlwifi 0000:00:14.3: 0x00000000 | l2p_control
[61.068946] iwlwifi 0000:00:14.3:0x00000000 | l2p_duration
[61.068948] iwlwifi 0000:00:14.3:0x00000000 | l2p_mhvalid
[61.068950] iwlwifi 0000:00:14.3:0x00000000 | l2p_addr_match
[61.068953]iwlwifi 0000:00:14.3:0x00000048 | lmpm_pmg_sel
[61.068955] iwlwifi 0000:00:14.3: 0x00000000 | 时间戳
[61.068958] iwlwifi 0000:00:14.3:0x0000084C | flow_handler
[61.069003] iwlwifi 0000:00:14.3：启动 IWL 错误日志转储：
[61.069005] iwlwifi 0000:00:14.3：传输状态：0x0000004B，有效：7
[61.069008] iwlwifi 0000:00:14.3:0x20 ADVANCED_SYSASSERT
[61.069011] iwlwifi 0000:00:14.3:0x00000000 | umac branchlink1
[61.069014] iwlwifi 0000:00:14.3:0x8045348E | umac branchlink2
[61.069016] iwlwifi 0000:00:14.3:0xC00811A4 | umac 中断
链接1 [61.069019] iwlwifi 0000:00:14.3:0x00000000 | umac 中断链接2
[61.069021]iwlwifi 0000:00:14.3:0x00110407 | umac 数据 1
[61.069024] iwlwifi 0000:00:14.3:0xDEADBEEF | umac 数据2
[61.069026] iwlwifi 0000:00:14.3:0xDEADBEEF | umac 数据3
[61.069028] iwlwifi 0000:00:14.3:0x00000042 | umac 专业
[61.069031] iwlwifi 0000:00:14.3:0xF1C864E0 | umac 次要
[61.069033] iwlwifi 0000:00:14.3:0x00026E85 | 帧指针
[61.069036] iwlwifi 0000:00:14.3:0xC0886C14 | 堆栈指针
[61.069038] iwlwifi 0000:00:14.3:0x00110407 | 最后主机 cmd
[61.069040] iwlwifi 0000:00:14.3:0x00000000 | isr 状态注册
[61.069064] iwlwifi 0000:00:14.3: IML/ROM 转储:
[61.069066] iwlwifi 0000:00:14.3: 0x00000003 | IML/ROM 错误/状态
[61.069093]iwlwifi 0000:00:14.3:0x000056A0 | IML/ROM 数据1
[61.069122] iwlwifi 0000:00:14.3:0x00000080 | IML/ROM WFPM_AUTH_KEY_0
[61.069148] iwlwifi 0000:00:14.3：Fseq 寄存器：
[61.069169] iwlwifi 0000:00:14.3:0x60000000 | FSEQ_ERROR_CODE
[61.069174] iwlwifi 0000:00:14.3: 0x80260000 | FSEQ_TOP_INIT_VERSION [ 61.069194
] iwlwifi 0000:00:14.3:0x00020006 | FSEQ_CNVIO_INIT_VERSION [ 61.069199
] iwlwifi 0000:00:14.3:0x0000A384 | FSEQ_OTP_VERSION
[61.069220] iwlwifi 0000:00:14.3:0x2F2B0781 | FSEQ_TOP_ CONTENT_ VERSION
[61.069225] iwlwifi 0000:00:14.3: 0x4552414E | FSEQ_ALIVE_TOKEN
[61.069246] iwlwifi 0000:00:14.3:0x20000302 | FSEQ_CNVI_ID
[61.069251]iwlwifi 0000:00:14.3:0x01300202 | FSEQ_CNVR_ID
[61.069272] iwlwifi 0000:00:14.3:0x20000302 | CNVI_AUX_MISC_CHIP
[61.069279] iwlwifi 0000:00:14.3:0x01300202 | CNVR_AUX_MISC_CHIP
[61.069302] iwlwifi 0000:00:14.3:0x0000485B | CNVR_SCU_ SD_REGS_ SD_REG_ DIG_DCDC_ VTRIM
[ 61.069354] iwlwifi 0000:00:14.3: 0xA5A5A5A2 | CNVR_SCU_ SD_REGS_ SD_REG_ ACTIVE_ VDIG_MIRROR
[61.069376] iwlwifi 0000:00:14.3：启动 mac，无论如何都会触发重试
[61.069433] iwlwifi 0000:00:14.3：检测到硬件错误。重新启动。
[61.069459] iwlwifi 0000:00:14.3: SYNC CMD 中的固件错误未知

[Juerg Haefliger (juergh)]

Can you run the following command after the problem shows up?
$ apport-collect 1966793

[Guillaume ZITTA (ubuntu-guillaume)]

Same problem on a DELL Precision 3561.
Found a probably related kernel bug with patch : https://bugzilla.kernel.org/show_bug.cgi?id=215523

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jonathan Hayes (scrabjon)]

I haven't seen a posted workaround for this anywhere so here is what I found to work on both v20.04 and v22.04:

For those loading iwlwifi-QuZ-a0-jf-b0-XX.ucode, use the 55 version as shown:

/lib/iwlwifi-QuZ-a0-jf-b0-55.ucode

I just moved all newer firmware that are higher than 55 out of the /lib/firmware directory.

In v20.04, after removing newer firmware, it just auto loads and starts working.
In v22.04, you must reboot after removing the firmware that is higher than 55.

So something changed after v55 that broke the wireless functionality on the 440 G8 with AX201.

Here is a before and after hardware snapshot:

- *-network DISABLED
+ *-network
        description: Wireless interface
        product: Wi-Fi 6 AX201
        vendor: Intel Corporation
        physical id: 14.3
        bus info: pci@0000:00:14.3
        logical name: wlp0s20f3
        version: 20
        serial: 28:d0:ea:15:fc:c0
        width: 64 bits
        clock: 33MHz
        capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
- configuration: broadcast=yes driver=iwlwifi driverversion=5.15.0-27-generic firmware=66.f1c864e0.0 QuZ-a0-jf-b0-66.u latency=0 link=no multicast=yes wireless=IEEE 802.11
+ configuration: broadcast=yes driver=iwlwifi driverversion=5.15.0-28-generic firmware=55.d9698065.0 QuZ-a0-jf-b0-55.u ip=192.168.247.110 latency=0 link=yes multicast=yes wireless=IEEE 802.11
        resources: iomemory:600-5ff irq:16 memory:600324c000-600324ffff

[Gleb Yeliseev (glebyeliseev)]

Same problem on a Dell Vostro 3510.
Release: 22.04, Kernel: 5.15.0-27-generic.

[Dean North (mehstar)]

scrabjon's solution above to remove firmwares newer than /lib/firmware/iwlwifi-QuZ-a0-jf-b0-55 fixed my problem as well.

HP ProBook 450 G8
Ubuntu: 22.04, Kernel: 5.15.0-30-generic (Problem also occured on kernel 5.17.5...)
Wifi model: Intel WiFi 6 AX201

My wifi device driver would load, but I was unable to scan for wifi networks.

[hassan9224 (hassan9224)]

I am having same issue with HP ProBook 450 G8. Wifi not working. Any solution ?

[Swapnil Verma (swapnil28verma)]

scrabjon's solution worked for me as well. HP Probook 440g8 user here. Like mehstar, my wifi was also getting enabled, but not able to scan for networks. In my case there were 3 files that needed to be deleted via terminal - v59, v63, and v66.

[Juerg Haefliger (juergh)]

For people who believe they're seeing this issue with the -66 firmware, please provide logs by running 'apport-collect 1966793' after the problem occurred (obviously with the -66 firmware and latest 5.15 kernel).

Reverting back to an older version if OK as a workaround but not a long term solution.

[Zhiyuan Hu (im-kitsch)]

For me. it still doesn't work.

In my computer it uses iwlwifi-so-a0-hr-b0-64.ucode.

But not -so-jf* as mentioned in answer.

I tried in Fedora and it works, looks it's still kernel problem.

I use AX-201 too, computer is HP-OMEN-45L

[Jonathan Hayes (scrabjon)]

ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D5p', '/dev/snd/pcmC0D4p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D7c', '/dev/snd/pcmC0D6c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
CasperMD5CheckResult: unknown
CurrentDesktop: LXQt
Dependencies: firmware-sof-signed 2.0-1ubuntu3
DistroRelease: Ubuntu 22.04
InstallationDate: Installed on 2022-04-26 (187 days ago)
InstallationMedia: Lubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
MachineType: HP HP ProBook 440 G8 Notebook PC
Package: linux-firmware 20220329.git681281e4-0ubuntu3.3
PackageArchitecture: all
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-41-generic root=UUID=7e1db316-a53e-4323-852f-d184357ad5f0 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.15.0-41.44-generic 5.15.39
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-5.15.0-41-generic N/A
 linux-backports-modules-5.15.0-41-generic N/A
 linux-firmware 20220329.git681281e4-0ubuntu3.3
Tags: jammy package-from-proposed
Uname: Linux 5.15.0-41-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/12/2022
dmi.bios.release: 8.20
dmi.bios.vendor: HP
dmi.bios.version: T70 Ver. 01.08.20
dmi.board.name: 87E0
dmi.board.vendor: HP
dmi.board.version: KBC Version 33.19.00
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 51.25
dmi.modalias: dmi:bvnHP:bvrT70Ver.01.08.20:bd03/12/2022:br8.20:efr51.25:svnHP:pnHPProBook440G8NotebookPC:pvr:rvnHP:rn87E0:rvrKBCVersion33.19.00:cvnHP:ct10:cvr:sku28K85UTR:
dmi.product.family: 103C_5336AN HP ProBook
dmi.product.name: HP ProBook 440 G8 Notebook PC
dmi.product.sku: 28K85UTR
dmi.sys.vendor: HP

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Jonathan Hayes (scrabjon)]

apport information

[Tobiyo Kuujikai (fuseteam)]

This seems to be a an issue on 5.19 aswell jonathan's workaround works but doing that after every kernel upgrade, including within 5.15 is cumbersome.

I have filed a separate bug report for 5.19 with ubuntu-bug linux, feedback if there's any additional information i can provide is appreciated

So far i've found this is a regression from 5.10

[Juerg Haefliger (juergh)]

Maybe related:

[ 4.559227] ================================================================================
[ 4.559231] UBSAN: shift-out-of-bounds in /build/linux-TxVM9Q/linux-5.15.0/drivers/net/wireless/intel/iwlwifi/mvm/sta.c:2026:53
[ 4.559233] shift exponent 65535 is too large for 64-bit type 'long unsigned int'
[ 4.559235] CPU: 5 PID: 678 Comm: NetworkManager Not tainted 5.15.0-41-generic #44-Ubuntu
[ 4.559237] Hardware name: HP HP ProBook 440 G8 Notebook PC/87E0, BIOS T70 Ver. 01.08.20 03/12/2022
[ 4.559238] Call Trace:
[ 4.559239] <TASK>
[ 4.559241] show_stack+0x52/0x58
[ 4.559246] dump_stack_lvl+0x4a/0x5f
[ 4.559249] dump_stack+0x10/0x12
[ 4.559250] ubsan_epilogue+0x9/0x45
[ 4.559252] __ubsan_handle_shift_out_of_bounds.cold+0x61/0xef
[ 4.559256] iwl_mvm_add_aux_sta.cold+0x17/0x1f [iwlmvm]
[ 4.559273] iwl_mvm_up+0x644/0x9e0 [iwlmvm]
[ 4.559280] ? rtl_set_rx_mode+0x101/0x180 [r8169]
[ 4.559284] __iwl_mvm_mac_start+0x2b/0x1a0 [iwlmvm]
[ 4.559292] iwl_mvm_mac_start+0x5f/0xc0 [iwlmvm]
[ 4.559298] drv_start+0x4f/0xe0 [mac80211]
[ 4.559335] ieee80211_do_open+0x488/0x9c0 [mac80211]
[ 4.559357] ? ieee80211_check_concurrent_iface+0x158/0x1c0 [mac80211]
[ 4.559377] ieee80211_open+0x6c/0x90 [mac80211]
[ 4.559396] __dev_open+0xf0/0x1c0
[ 4.559399] __dev_change_flags+0x1a3/0x220
[ 4.559400] ? cpumask_next+0x23/0x30
[ 4.559402] dev_change_flags+0x26/0x60
[ 4.559404] do_setlink+0x28a/0xc50
[ 4.559406] ? __nla_validate_parse+0x4c/0x1a0
[ 4.559408] __rtnl_newlink+0x618/0xa20
[ 4.559410] ? skb_queue_tail+0x48/0x50
[ 4.559412] ? sock_def_readable+0x4b/0x80
[ 4.559413] ? __netlink_sendskb+0x5f/0x80
[ 4.559416] ? netlink_unicast+0x2f3/0x330
[ 4.559417] ? rtnl_getlink+0x392/0x410
[ 4.559420] ? kmem_cache_alloc_trace+0x19e/0x2e0
[ 4.559424] rtnl_newlink+0x49/0x70
[ 4.559425] rtnetlink_rcv_msg+0x15a/0x400
[ 4.559426] ? rtnl_calcit.isra.0+0x130/0x130
[ 4.559427] netlink_rcv_skb+0x53/0x100
[ 4.559429] rtnetlink_rcv+0x15/0x20
[ 4.559430] netlink_unicast+0x21a/0x330
[ 4.559431] netlink_sendmsg+0x24c/0x4c0
[ 4.559432] sock_sendmsg+0x62/0x70
[ 4.559433] ____sys_sendmsg+0x24e/0x290
[ 4.559434] ? import_iovec+0x31/0x40
[ 4.559437] ? sendmsg_copy_msghdr+0x7b/0xa0
[ 4.559438] ___sys_sendmsg+0x81/0xc0
[ 4.559440] ? kvfree+0x2a/0x30
[ 4.559442] ? kfree+0x1f3/0x250
[ 4.559443] ? security_file_free+0x54/0x60
[ 4.559446] ? kmem_cache_free+0x245/0x290
[ 4.559447] ? __fget_files+0x86/0xc0
[ 4.559450] __sys_sendmsg+0x62/0xb0
[ 4.559451] ? exit_to_user_mode_loop+0x10d/0x160
[ 4.559454] __x64_sys_sendmsg+0x1d/0x20
[ 4.559455] do_syscall_64+0x59/0xc0
[ 4.559457] ? exit_to_user_mode_prepare+0x37/0xb0
[ 4.559459] ? syscall_exit_to_user_mode+0x27/0x50
[ 4.559461] ? __x64_sys_write+0x19/0x20
[ 4.559462] ? do_syscall_64+0x69/0xc0
[ 4.559463] ? __x64_sys_close+0x11/0x40
[ 4.559465] ? do_syscall_64+0x69/0xc0
[ 4.559466] ? do_syscall_64+0x69/0xc0
[ 4.559467] ? do_syscall_64+0x69/0xc0
[ 4.559468] ? __x64_sys_recvmsg+0x1d/0x20
[ 4.559469] ...