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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-76bccfe9172sm64126b3a.126.2025.07.30.17.12.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Jul 2025 17:12:35 -0700 (PDT) Message-ID: <55db7f5a-89d1-41b8-9e63-89bb7ec18778@oss.qualcomm.com> Date: Thu, 31 Jul 2025 08:12:31 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: ath10k: ath10k_wmi_wait_for_service_ready() called twice during boot To: Paul Menzel Cc: Baochen Qiang , Jeff Johnson , ath10k@lists.infradead.org, James Prestwood , LKML References: <97a15967-5518-4731-a8ff-d43ff7f437b0@molgen.mpg.de> <3cbe13e1-a820-4804-a28c-a57e2ee7a020@oss.qualcomm.com> <8716a67c-6e33-4a35-8d96-33f81c07c8e0@molgen.mpg.de> <1e797dea-d2e1-4947-8ef3-d2ac5ea0c156@oss.qualcomm.com> <4e5a3a4d-9b6b-443b-b3c2-eac1b44e96e0@molgen.mpg.de> <4f00e46c-598e-4661-87fe-cabc6a678be0@oss.qualcomm.com> <04cd7aaa-e1f6-410c-98e7-49cb7ec8e582@molgen.mpg.de> <10298561-8016-478f-aa82-bf2ea9b33db9@molgen.mpg.de> Content-Language: en-US From: Baochen Qiang In-Reply-To: <10298561-8016-478f-aa82-bf2ea9b33db9@molgen.mpg.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: 972MnZOLrVxNdcmjHVTO7KdetGPhB8sb X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzMwMDE3OSBTYWx0ZWRfX1jliefVq17w+ eenayYgiIIaWn6PjFIM6oKffO1QDyHVIA6agZ02I34dcicCfIJvx3LyuR9pyVTsfbGq6i1E6uoH 5FNDQLAd0SeNIxX5bRpyJMwYXOxoQEgqsRd3QIe26QDqfkK3Fa4jBcUZDoPeIvRRbOPrd4sAvW/ R1id2735srSEPyQT9UgyZF+SdFu9Fyq5IYvsnfQ1EvIKJy1gBf8YXUOMxN2YSw0cv6B/z8efwK7 i0/I3xh8BTyRj6IiR6mBhwoetr0y7IVMy8WK7pgYKanUhfEibbhED3gxH7yqZ7scKkORWwhVOJO HrIxhFR8KHk12hiSITVwhdNuSLLEX/MoTeU+S6QROqxgT5fa769qLhYl3IpSSihkWx67Wzu2Irv oR+nPOrPQFmmM+zmQXBP0Xq7baBO1lS1HA5Oh/TpFYZBiEo2Nnp7FBF/jY6FqCCb8CHuhwjn X-Authority-Analysis: v=2.4 cv=HfYUTjE8 c=1 sm=1 tr=0 ts=688ab4f6 cx=c_pps a=m5Vt/hrsBiPMCU0y4gIsQw==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=8-oeUsj2rOlVhVxQr9IA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=IoOABgeZipijB_acs4fv:22 X-Proofpoint-ORIG-GUID: 972MnZOLrVxNdcmjHVTO7KdetGPhB8sb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-30_06,2025-07-30_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 clxscore=1015 bulkscore=0 suspectscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 adultscore=0 mlxlogscore=999 phishscore=0 priorityscore=1501 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507300179 On 7/30/2025 6:40 PM, Paul Menzel wrote: > [Cc: remove scheduler folks] > > Dear Baochen, > > > Thank you for your reply, and let’s fork this thread. > > > Am 29.07.25 um 04:27 schrieb Baochen Qiang: > > […] > >> Never mind, since you can modify the source code, you can simply get >> call stack with: >> >> $ git diff >> diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c >> index cb8ae751eb31..eb591e059103 100644 >> --- a/drivers/net/wireless/ath/ath10k/wmi.c >> +++ b/drivers/net/wireless/ath/ath10k/wmi.c >> @@ -1766,6 +1766,8 @@ int ath10k_wmi_wait_for_service_ready(struct ath10k *ar) >>   { >>          unsigned long time_left, i; >> >> +       dump_stack(); >> + >>          time_left = wait_for_completion_timeout(&ar->wmi.service_ready, >>                                                  WMI_SERVICE_READY_TIMEOUT_HZ); >>          if (!time_left) { > > Thanks, yes, I wanted to avoid it, but now added it to the end, and started the Linux kernel. > > With that, I got: > > ``` > [    0.000000] Linux version 6.16.0-04406-g154cace907b6 > (build@bohemianrhapsody.molgen.mpg.de) (gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU > Binutils for Debian) 2.44) #98 SMP PREEMPT_DYNAMIC Wed Jul 30 11:59:36 CEST 2025 > [    0.000000] Command line: BOOT_IMAGE=/vmlinuz-6.16.0-04406-g154cace907b6 > root=UUID=32e29882-d94d-4a92-9ee4-4d03002bfa29 ro quiet pci=noaer mem_sleep_default=deep > log_buf_len=16M cryptomgr.notests usbcore.quirks=0cf3:e300:e,04f3:2234:e,0c45:670c:e > […] > [    0.000000] DMI: Dell Inc. XPS 13 9360/0596KF, BIOS 2.21.0 06/02/2022 > […] > [   14.624206] ath10k_pci 0000:3a:00.0: enabling device (0000 -> 0002) > [   14.633316] ath10k_pci 0000:3a:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0 > [   14.662181] audit: type=1400 audit(1753869969.819:2): apparmor="STATUS" > operation="profile_load" profile="unconfined" name=4D6F6E676F444220436F6D70617373 pid=516 > comm="apparmor_parser" > [   14.662313] audit: type=1400 audit(1753869969.819:3): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="QtWebEngineProcess" pid=518 > comm="apparmor_parser" > [   14.663112] audit: type=1400 audit(1753869969.819:4): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="1password" pid=514 comm="apparmor_parser" > [   14.664059] audit: type=1400 audit(1753869969.819:5): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="Discord" pid=515 comm="apparmor_parser" > [   14.664963] audit: type=1400 audit(1753869969.819:6): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="balena-etcher" pid=523 > comm="apparmor_parser" > [   14.665357] audit: type=1400 audit(1753869969.819:7): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="buildah" pid=525 comm="apparmor_parser" > [   14.665479] audit: type=1400 audit(1753869969.819:8): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="brave" pid=524 comm="apparmor_parser" > [   14.666813] audit: type=1400 audit(1753869969.823:9): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="cam" pid=527 comm="apparmor_parser" > [   14.666817] audit: type=1400 audit(1753869969.823:10): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="busybox" pid=526 comm="apparmor_parser" > [   14.667174] audit: type=1400 audit(1753869969.823:11): apparmor="STATUS" > operation="profile_load" profile="unconfined" name="ch-checkns" pid=528 > comm="apparmor_parser" > [   14.719843] usbcore: registered new interface driver uvcvideo > [   14.792965] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002) > [   14.793498] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops > intel_audio_component_bind_ops [i915]) > [   14.837438] snd_hda_codec_generic hdaudioC0D0: autoconfig for Generic: line_outs=1 > (0x14/0x0/0x0/0x0/0x0) type:speaker > [   14.837458] snd_hda_codec_generic hdaudioC0D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) > [   14.837467] snd_hda_codec_generic hdaudioC0D0:    hp_outs=1 (0x21/0x0/0x0/0x0/0x0) > [   14.837475] snd_hda_codec_generic hdaudioC0D0:    mono: mono_out=0x0 > [   14.837480] snd_hda_codec_generic hdaudioC0D0:    inputs: > [   14.837485] snd_hda_codec_generic hdaudioC0D0:      Mic=0x12 > [   14.870772] ath10k_pci 0000:3a:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff > sub 1a56:1535 > [   14.870778] ath10k_pci 0000:3a:00.0: kconfig debug 0 debugfs 0 tracing 0 dfs 0 testmode 0 > [   14.870853] ath10k_pci 0000:3a:00.0: firmware ver WLAN.RM.4.4.1-00309- api 6 features > wowlan,ignore-otp,mfp crc32 0793bcf2 > [   14.877651] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1f.3/ > sound/card0/input24 > [   14.877724] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/ > sound/card0/input25 > [   14.877788] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/ > sound/card0/input26 > [   14.877872] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/ > sound/card0/input27 > [   14.944938] Bluetooth: hci0: using NVM file: qca/nvm_usb_00000302.bin > [   14.946658] ath10k_pci 0000:3a:00.0: board_file api 2 bmi_id N/A crc32 d2863f91 > [   14.967545] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is > advertised, but not supported. > [   15.027036] CPU: 1 UID: 0 PID: 41 Comm: kworker/u16:2 Not tainted 6.16.0-04406- > g154cace907b6 #98 PREEMPT(voluntary) > [   15.027044] Hardware name: Dell Inc. XPS 13 9360/0596KF, BIOS 2.21.0 06/02/2022 > [   15.027046] Workqueue: ath10k_wq ath10k_core_register_work [ath10k_core] > [   15.027084] Call Trace: > [   15.027088]  > [   15.027091]  dump_stack_lvl+0x5d/0x80 > [   15.027100]  ath10k_wmi_wait_for_service_ready.cold+0x5/0xc [ath10k_core] > [   15.027136]  ath10k_core_start+0xaec/0x1090 [ath10k_core] > [   15.027169]  ath10k_core_register_work+0x5c4/0x930 [ath10k_core] > [   15.027198]  process_one_work+0x185/0x340 > [   15.027205]  worker_thread+0x252/0x3a0 > [   15.027210]  ? rescuer_thread+0x4b0/0x4b0 > [   15.027215]  kthread+0xf9/0x240 > [   15.027219]  ? kthreads_online_cpu+0x120/0x120 > [   15.027223]  ? kthreads_online_cpu+0x120/0x120 > [   15.027227]  ret_from_fork+0x198/0x1d0 > [   15.027232]  ? kthreads_online_cpu+0x120/0x120 > [   15.027235]  ret_from_fork_asm+0x11/0x20 > [   15.027243]  OK, so this is from driver load. > [   15.046899] ath10k_pci 0000:3a:00.0: htt-ver 3.87 wmi-op 4 htt-op 3 cal otp max-sta 32 > raw 0 hwcrypto 1 > [   15.053439] nvme nvme0: using unchecked data buffer > [   15.120478] ath: EEPROM regdomain: 0x6c > [   15.120483] ath: EEPROM indicates we should expect a direct regpair map > [   15.120485] ath: Country alpha2 being used: 00 > [   15.120486] ath: Regpair used: 0x6c > [   15.153053] ath10k_pci 0000:3a:00.0 wlp58s0: renamed from wlan0 > [   15.644071] CPU: 0 UID: 0 PID: 675 Comm: NetworkManager Not tainted 6.16.0-04406- > g154cace907b6 #98 PREEMPT(voluntary) > [   15.644075] Hardware name: Dell Inc. XPS 13 9360/0596KF, BIOS 2.21.0 06/02/2022 > [   15.644077] Call Trace: > [   15.644079]  > [   15.644082]  dump_stack_lvl+0x5d/0x80 > [   15.644089]  ath10k_wmi_wait_for_service_ready.cold+0x5/0xc [ath10k_core] > [   15.644104]  ath10k_core_start+0xaec/0x1090 [ath10k_core] > [   15.644115]  ath10k_start+0xb8/0x840 [ath10k_core] > [   15.644125]  drv_start+0x3c/0xf0 [mac80211] > [   15.644165]  ieee80211_do_open+0x2c2/0x7f0 [mac80211] > [   15.644197]  ieee80211_open+0x84/0x90 [mac80211] > [   15.644230]  __dev_open+0xee/0x200 > [   15.644233]  __dev_change_flags+0x1ef/0x230 > [   15.644234]  ? prep_new_page+0xcc/0x1d0 > [   15.644237]  netif_change_flags+0x26/0x60 > [   15.644238]  do_setlink.isra.0+0x348/0x1150 > [   15.644241]  ? __nla_validate_parse+0x5e/0xc70 > [   15.644243]  ? security_capable+0x66/0xa0 > [   15.644245]  rtnl_newlink+0x892/0xc20 > [   15.644247]  ? update_load_avg+0x80/0x760 > [   15.644249]  ? update_curr+0x90/0x170 > [   15.644250]  ? mod_memcg_lruvec_state+0x191/0x1d0 > [   15.644253]  ? do_setlink.isra.0+0x1150/0x1150 > [   15.644254]  rtnetlink_rcv_msg+0x348/0x3e0 > [   15.644257]  ? rtnl_calcit.isra.0+0x120/0x120 > [   15.644260]  netlink_rcv_skb+0x4f/0x100 > [   15.644263]  netlink_unicast+0x273/0x3d0 > [   15.644265]  netlink_sendmsg+0x228/0x470 > [   15.644267]  __sock_sendmsg+0x38/0x70 > [   15.644270]  ? __import_iovec+0x139/0x180 > [   15.644272]  ____sys_sendmsg+0x1c0/0x260 > [   15.644275]  ? import_iovec+0xb/0x10 > [   15.644277]  ___sys_sendmsg+0x95/0xd0 > [   15.644279]  __sys_sendmsg+0x7b/0xd0 > [   15.644282]  do_syscall_64+0x84/0xae0 > [   15.644284]  ? pollwake+0x77/0x90 > [   15.644287]  ? wake_up_state+0x10/0x10 > [   15.644288]  ? __wake_up_common+0x72/0x90 > [   15.644290]  ? eventfd_write+0xe1/0x210 > [   15.644292]  ? security_file_permission+0x35/0x70 > [   15.644294]  ? vfs_write+0xcc/0x460 > [   15.644296]  ? ___sys_sendmsg+0xa1/0xd0 > [   15.644297]  ? ksys_write+0xc7/0xe0 > [   15.644298]  ? do_syscall_64+0xbc/0xae0 > [   15.644301]  ? __sys_sendmsg+0xb6/0xd0 > [   15.644303]  ? do_syscall_64+0xbc/0xae0 > [   15.644304]  ? do_syscall_64+0xbc/0xae0 > [   15.644306]  ? do_syscall_64+0xbc/0xae0 > [   15.644308]  entry_SYSCALL_64_after_hwframe+0x4b/0x53 > [   15.644310] RIP: 0033:0x7fa5c3ca49ee > [   15.644334] Code: 08 0f 85 f5 4b ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d > 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 > 00 0f 1f 80 00 00 00 00 48 83 ec 08 > [   15.644335] RSP: 002b:00007ffc2e929548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > [   15.644338] RAX: ffffffffffffffda RBX: 00007fa5c3094580 RCX: 00007fa5c3ca49ee > [   15.644339] RDX: 0000000000000000 RSI: 00007ffc2e9295d0 RDI: 000000000000000d > [   15.644340] RBP: 00007ffc2e9295d0 R08: 0000000000000000 R09: 0000000000000000 > [   15.644340] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000001c > [   15.644341] R13: 00007ffc2e9297c8 R14: 00007ffc2e9297bc R15: 0000000000000000 > [   15.644343]  > [   18.369625] pci 0000:01:00.0: [8086:1576] type 01 class 0x060400 PCIe Switch Upstream Port > [   18.369702] pci 0000:01:00.0: PCI bridge to [bus 02-39] and this is from userspace starting to bringup the WLAN interface: calling the _start() ops. In summary, the two instances of 'wait for service ready' are expected behavior. > […] > ``` > > > Kind regards, > > Paul