iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

[Marc Haber]

Hi,

on my primary notebook, a Lenovo X260, with an Intel Wireless 8260
(8086:24f3), running Debian unstable, I have started to see network
hangs since upgrading to kernel 5.1. In this situation, I cannot
restart Network-Manager (the call just hangs), I can log out of X, but
the system does not cleanly shut down and I need to Magic SysRq myself
out of the running system. This happens about once every two days.

dmesg:
[38083.673678] lanw0: authenticate with 92:2a:a8:cb:8b:6c
[38083.682971] lanw0: send auth to 92:2a:a8:cb:8b:6c (try 1/3)
[38083.693860] lanw0: authenticated
[38083.697711] lanw0: associate with 92:2a:a8:cb:8b:6c (try 1/3)
[38083.703029] lanw0: RX ReassocResp from 92:2a:a8:cb:8b:6c (capab=0x411 status=0 aid=1)
[38083.705838] lanw0: associated
[38114.658765] lanw0: disconnect from AP 92:2a:a8:cb:8b:6c for new auth to 02:9f:c2:ab:b6:9f
[38114.671649] lanw0: authenticate with 02:9f:c2:ab:b6:9f
[38114.680074] lanw0: send auth to 02:9f:c2:ab:b6:9f (try 1/3)
[38114.692359] lanw0: authenticated
[38114.693609] lanw0: associate with 02:9f:c2:ab:b6:9f (try 1/3)
[38114.698697] lanw0: RX ReassocResp from 02:9f:c2:ab:b6:9f (capab=0x411 status=0 aid=1)
[38114.700878] lanw0: associated
[38179.708187] lanw0: disconnect from AP 02:9f:c2:ab:b6:9f for new auth to 92:2a:a8:cb:8b:6c
[38179.720183] lanw0: authenticate with 92:2a:a8:cb:8b:6c
[38179.728924] lanw0: send auth to 92:2a:a8:cb:8b:6c (try 1/3)
[38179.741439] lanw0: authenticated
[38179.745606] lanw0: associate with 92:2a:a8:cb:8b:6c (try 1/3)
[38179.750579] lanw0: RX ReassocResp from 92:2a:a8:cb:8b:6c (capab=0x411 status=0 aid=1)
[38179.752854] lanw0: associated
[38179.854525] list_del corruption. next->prev should be ffff88839d6167f8, but was ffff88839d616108
[38179.854533] ------------[ cut here ]------------
[38179.854535] kernel BUG at lib/list_debug.c:56!
[38179.854539] invalid opcode: 0000 [#2] SMP PTI
[38179.854542] CPU: 0 PID: 1869 Comm: kworker/0:2 Tainted: G      D    O      5.1.1-zgws1 #5.1.1.20190514.3
[38179.854543] Hardware name: LENOVO 20F5S5X100/20F5S5X100, BIOS R02ET63W (1.36 ) 12/15/2017
[38179.854552] Workqueue: events iwl_mvm_add_new_dqa_stream_wk [iwlmvm]
[38179.854556] RIP: 0010:__list_del_entry_valid.cold.1+0x20/0x4c
[38179.854557] Code: e3 d8 81 e8 a7 f2 da ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 20 e4 d8 81 e8 93 f2 da ff 0f 0b 48 c7 c7 d0 e4 d8 81 e8 85 f2 da ff <0f> 0b 48 89 f2 48 89 fe 48 c7 c7 90 e4 d8 81 e8 71 f2 da ff 0f 0b
38179.854559] RSP: 0018:ffffc9000844fde8 EFLAGS: 00010246
[38179.854560] RAX: 0000000000000054 RBX: ffff88839d6167f8 RCX: 0000000000000000
[38179.854561] RDX: 0000000000000000 RSI: ffff8884318164d8 RDI: ffff8884318164d8
[38179.854562] RBP: ffff888150a56888 R08: 000000000000042a R09: 0000000000000063
[38179.854563] R10: 0000000000000000 R11: ffffc9000844fc88 R12: 000000000000000a
[38179.854564] R13: 0000000000000000 R14: ffff88842bdfe388 R15: 0000000000000000
[38179.854566] FS:  0000000000000000(0000) GS:ffff888431800000(0000) knlGS:0000000000000000
[38179.854567] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[38179.854568] CR2: 00007f87c26a5000 CR3: 000000033154a006 CR4: 00000000003626f0
[38179.854569] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[38179.854570] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[38179.854571] Call Trace:
[38179.854578]  iwl_mvm_add_new_dqa_stream_wk+0x2b2/0x760 [iwlmvm]
[38179.854582]  process_one_work+0x195/0x3d0
[38179.854584]  worker_thread+0x2b/0x390
[38179.854586]  ? create_worker+0x190/0x190
[38179.854588]  kthread+0x111/0x130
[38179.854589]  ? kthread_bind+0x20/0x20
[38179.854592]  ret_from_fork+0x35/0x40
[38179.854594] Modules linked in: vhost_net vhost tap ext2 mmc_block tun hid_generic usbhid hid ctr ccm rfcomm fuse acpi_call(O) cpufreq_userspace cpufreq_powersave cpufreq_conservative cmac bnep option cdc_ether btusb usbnet btbcm btintel usb_wwan mii usbserial bluetooth hmac drbg ansi_cprng ecdh_generic msr bridge stp llc dummy ip6t_REJECT arc4 nf_reject_ipv6 ip6_tables nft_chain_nat ipt_MASQUERADE nf_nat wmi_bmof nft_chain_route_ipv4 snd_hda_codec_hdmi iwlmvm xt_TCPMSS mac80211 snd_hda_codec_realtek nft_counter snd_hda_codec_generic iwlwifi snd_hda_intel intel_rapl snd_hda_codec x86_pkg_temp_thermal intel_powerclamp ipt_REJECT nf_reject_ipv4 kvm_intel xt_tcpudp snd_hda_core kvm irqbypass snd_hwdep xt_conntrack intel_cstate intel_rapl_perf nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 snd_pcm nft_compat input_leds serio_raw snd_timer cfg80211 thinkpad_acpi nf_tables sg nvram mei_hdcp ledtrig_audio intel_pch_thermal tpm_tis snd nfnetlink tpm_tis_core soundcore tpm rfkill wmi rng_core a
 c battery
[38179.854623]  evdev pcc_cpufreq button tcp_bbr sch_fq nfsd auth_rpcgss nfs_acl lockd grace coretemp sunrpc loop ip_tables x_tables autofs4 btrfs zlib_deflate ext4 crc16 mbcache jbd2 algif_skcipher af_alg dm_crypt dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor uas usb_storage raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod sd_mod crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel rtsx_pci_sdmmc mmc_core aesni_intel aes_x86_64 crypto_simd cryptd glue_helper ahci libahci psmouse xhci_pci i2c_i801 e1000e libata xhci_hcd rtsx_pci mfd_core scsi_mod usbcore usb_common i915 i2c_algo_bit drm_kms_helper drm i2c_core thermal video
[38179.854652] ---[ end trace fd93637fcde969e6 ]---
[38179.854654] RIP: 0010:compaction_alloc+0x569/0x8c0
[38179.854656] Code: 62 01 00 00 49 be 00 00 00 00 00 16 00 00 eb 72 48 b8 00 00 00 00 00 ea ff ff 49 89 da 49 c1 e2 06 4d 8d 2c 02 4d 85 ed 74 3b <41> 8b 45 30 25 80 00 00 f0 3d 00 00 00 f0 0f 84 f9 00 00 00 41 80
[38179.854657] RSP: 0018:ffffc90001a5f900 EFLAGS: 00010286
[38179.854658] RAX: ffffea0000000000 RBX: 80000000000ffe00 RCX: 000000000000003c
[38179.854659] RDX: 80000000000ffe00 RSI: 0000000000000000 RDI: ffff8884417f42c0
[38179.854660] RBP: 8000000000100000 R08: 0000000000000000 R09: ffff8884417fab80
[38179.854661] R10: 0000000003ff8000 R11: 8000000000122c00 R12: 0000000000000020
[38179.854662] R13: ffffea0003ff8000 R14: 0000160000000000 R15: ffffc90001a5fae0
[38179.854664] FS:  0000000000000000(0000) GS:ffff888431800000(0000) knlGS:0000000000000000
[38179.854665] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[38179.854666] CR2: 00007f87c26a5000 CR3: 000000033154a006 CR4: 00000000003626f0
[38179.854667] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[38179.854667] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


Is that a known issue? I currently have this with 5.1.5, are there patches in
the queue that may be candidates to stabilize my wireless again?

Greetings
Marc


-- 
-----------------------------------------------------------------------------
Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
Leimen, Germany    |  lose things."    Winona Ryder | Fon: *49 6224 1600402
Nordisch by Nature |  How to make an American Quilt | Fax: *49 6224 1600421

Re: iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

[Marc Haber]

On Thu, May 30, 2019 at 10:12:57AM +0200, Marc Haber wrote:
> on my primary notebook, a Lenovo X260, with an Intel Wireless 8260
> (8086:24f3), running Debian unstable, I have started to see network
> hangs since upgrading to kernel 5.1. In this situation, I cannot
> restart Network-Manager (the call just hangs), I can log out of X, but
> the system does not cleanly shut down and I need to Magic SysRq myself
> out of the running system. This happens about once every two days.

The issue is also present in 5.1.5 and 5.1.6.

Greetings
Marc

-- 
-----------------------------------------------------------------------------
Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
Leimen, Germany    |  lose things."    Winona Ryder | Fon: *49 6224 1600402
Nordisch by Nature |  How to make an American Quilt | Fax: *49 6224 1600421

Re: iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

[Yussuf Khalil]

CC'ing iwlwifi maintainers to get some attention for this issue.

I am experiencing the very same bug on a ThinkPad T480s running 5.1.6 
with Fedora 30. A friend is seeing it on his X1 Carbon 6th Gen, too. 
Both have an "Intel Corporation Wireless 8265 / 8275" card according to 
lspci.

Notably, in all cases I've observed it occurred right after roaming from 
one AP to another (though I can't guarantee this isn't a coincidence). 
Here is the dmesg output from my machine:

> Jun 02 00:38:25 pp3345-laptop kernel: wlp61s0: disconnect from AP 9c:1c:12:82:5a:b0 for new auth to ac:a3:1e:d9:5e:d0

> Jun 02 00:38:25 pp3345-laptop kernel: wlp61s0: authenticate with ac:a3:1e:d9:5e:d0

> Jun 02 00:38:25 pp3345-laptop kernel: wlp61s0: send auth to ac:a3:1e:d9:5e:d0 (try 1/3)

> Jun 02 00:38:25 pp3345-laptop kernel: wlp61s0: send auth to ac:a3:1e:d9:5e:d0 (try 2/3)

> Jun 02 00:38:25 pp3345-laptop kernel: wlp61s0: send auth to ac:a3:1e:d9:5e:d0 (try 3/3)

> Jun 02 00:38:25 pp3345-laptop kernel: wlp61s0: authentication with ac:a3:1e:d9:5e:d0 timed out

> Jun 02 00:38:26 pp3345-laptop kernel: wlp61s0: authenticate with 9c:1c:12:82:5a:b0

> Jun 02 00:38:26 pp3345-laptop kernel: wlp61s0: send auth to 9c:1c:12:82:5a:b0 (try 1/3)

> Jun 02 00:38:26 pp3345-laptop kernel: wlp61s0: authenticated

> Jun 02 00:38:26 pp3345-laptop kernel: wlp61s0: associate with 9c:1c:12:82:5a:b0 (try 1/3)

> Jun 02 00:38:26 pp3345-laptop kernel: wlp61s0: RX AssocResp from 9c:1c:12:82:5a:b0 (capab=0x1 status=0 aid=4)

> Jun 02 00:38:26 pp3345-laptop kernel: wlp61s0: associated

> Jun 02 00:38:26 pp3345-laptop kernel: list_del corruption. next->prev should be ffff9a9f64e527f8, but was ffff9a9f64e52108

> Jun 02 00:38:26 pp3345-laptop kernel: ------------[ cut here ]------------

> Jun 02 00:38:26 pp3345-laptop kernel: kernel BUG at lib/list_debug.c:54!

> Jun 02 00:38:26 pp3345-laptop kernel: invalid opcode: 0000 [#1] SMP PTI

> Jun 02 00:38:26 pp3345-laptop kernel: CPU: 5 PID: 2128 Comm: kworker/5:3 Not tainted 5.1.6-300.fc30.x86_64 #1

> Jun 02 00:38:26 pp3345-laptop kernel: Hardware name: LENOVO 20L8S02E00/20L8S02E00, BIOS N22ET54W (1.31 ) 04/22/2019

> Jun 02 00:38:26 pp3345-laptop kernel: Workqueue: events iwl_mvm_add_new_dqa_stream_wk [iwlmvm]

> Jun 02 00:38:26 pp3345-laptop kernel: RIP: 0010:__list_del_entry_valid.cold+0x1d/0x55

> Jun 02 00:38:26 pp3345-laptop kernel: Code: c7 c7 18 55 11 b8 e8 f5 0b c7 ff 0f 0b 48 89 fe 48 c7 c7 a8 55 11 b8 e8 e4 0b c7 ff 0f 0b 48 c7 c7 58 56 11 b8 e8 d6 0b c7 ff <0f> 0b 48 89 f2 48 89 fe 48 c7 c7 18 56 11 b8 e8 c2 0b c7 ff 0f 0b

> Jun 02 00:38:26 pp3345-laptop kernel: RSP: 0000:ffffa8ec4ad73dc8 EFLAGS: 00010246

> Jun 02 00:38:26 pp3345-laptop kernel: RAX: 0000000000000054 RBX: ffff9a9f64e527f8 RCX: 0000000000000000

> Jun 02 00:38:26 pp3345-laptop kernel: RDX: 0000000000000000 RSI: ffff9a9fcf3568c8 RDI: ffff9a9fcf3568c8

> Jun 02 00:38:26 pp3345-laptop kernel: RBP: ffff9a9f64e56898 R08: ffff9a9fcf3568c8 R09: 0000000000000c6f

> Jun 02 00:38:26 pp3345-laptop kernel: R10: ffffffffb89f930c R11: 0000000000000003 R12: 0000000000000004

> Jun 02 00:38:26 pp3345-laptop kernel: R13: ffff9a9fc879a388 R14: 0000000000000000 R15: ffff9a9fc8799608

> Jun 02 00:38:26 pp3345-laptop kernel: FS:  0000000000000000(0000) GS:ffff9a9fcf340000(0000) knlGS:0000000000000000

> Jun 02 00:38:26 pp3345-laptop kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033

> Jun 02 00:38:26 pp3345-laptop kernel: CR2: 00001d3a916bf000 CR3: 0000000487c94003 CR4: 00000000003606e0

> Jun 02 00:38:26 pp3345-laptop kernel: Call Trace:

> Jun 02 00:38:26 pp3345-laptop kernel:  iwl_mvm_add_new_dqa_stream_wk+0x2f3/0x870 [iwlmvm]

> Jun 02 00:38:26 pp3345-laptop kernel:  ? __switch_to+0x40/0x4c0

> Jun 02 00:38:26 pp3345-laptop kernel:  process_one_work+0x19d/0x380

> Jun 02 00:38:26 pp3345-laptop kernel:  worker_thread+0x50/0x3b0

> Jun 02 00:38:26 pp3345-laptop kernel:  kthread+0xfb/0x130

> Jun 02 00:38:26 pp3345-laptop kernel:  ? process_one_work+0x380/0x380

> Jun 02 00:38:26 pp3345-laptop kernel:  ? kthread_park+0x90/0x90

> Jun 02 00:38:26 pp3345-laptop kernel:  ret_from_fork+0x35/0x40

> Jun 02 00:38:26 pp3345-laptop kernel: Modules linked in: xt_CHECKSUM ipt_MASQUERADE tun bridge stp llc nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables bnep sunrpc vfat fat arc4 elan_i2c iwlmvm mac80211 mei_hdcp iTCO_wdt iTCO_vendor_support snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc intel_rapl snd_soc_sst_dsp iwlwifi snd_soc_acpi_intel_match snd_soc_acpi uvcvideo snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp btusb coretemp btrtl btbcm snd_soc_core btintel kvm_intel videobuf2_vmalloc bluetooth snd_hda_codec_realtek videobuf2_memops videobuf2_v4l2 videobuf2_common snd_hda_codec_generic videodev snd_compress

> Jun 02 00:38:26 pp3345-laptop kernel:  ac97_bus snd_pcm_dmaengine joydev snd_hda_intel kvm cfg80211 snd_hda_codec intel_wmi_thunderbolt wmi_bmof thunderbolt media snd_hda_core ecdh_generic snd_hwdep irqbypass snd_seq intel_cstate intel_uncore snd_seq_device intel_rapl_perf snd_pcm snd_timer thinkpad_acpi mei_me intel_xhci_usb_role_switch idma64 i2c_i801 mei roles ledtrig_audio ucsi_acpi snd intel_lpss_pci typec_ucsi intel_lpss processor_thermal_device intel_pch_thermal typec intel_soc_dts_iosf soundcore rfkill int3403_thermal int340x_thermal_zone int3400_thermal acpi_pad acpi_thermal_rel pcc_cpufreq dm_crypt i915 nouveau mxm_wmi ttm crct10dif_pclmul crc32_pclmul i2c_algo_bit crc32c_intel drm_kms_helper nvme drm nvme_core e1000e ghash_clmulni_intel uas usb_storage serio_raw wmi video fuse

> Jun 02 00:38:26 pp3345-laptop kernel: ---[ end trace 718b0122155852c5 ]---

> Jun 02 00:38:26 pp3345-laptop kernel: RIP: 0010:__list_del_entry_valid.cold+0x1d/0x55

> Jun 02 00:38:26 pp3345-laptop kernel: Code: c7 c7 18 55 11 b8 e8 f5 0b c7 ff 0f 0b 48 89 fe 48 c7 c7 a8 55 11 b8 e8 e4 0b c7 ff 0f 0b 48 c7 c7 58 56 11 b8 e8 d6 0b c7 ff <0f> 0b 48 89 f2 48 89 fe 48 c7 c7 18 56 11 b8 e8 c2 0b c7 ff 0f 0b

> Jun 02 00:38:26 pp3345-laptop kernel: RSP: 0000:ffffa8ec4ad73dc8 EFLAGS: 00010246

> Jun 02 00:38:26 pp3345-laptop kernel: RAX: 0000000000000054 RBX: ffff9a9f64e527f8 RCX: 0000000000000000

> Jun 02 00:38:26 pp3345-laptop kernel: RDX: 0000000000000000 RSI: ffff9a9fcf3568c8 RDI: ffff9a9fcf3568c8

> Jun 02 00:38:26 pp3345-laptop kernel: RBP: ffff9a9f64e56898 R08: ffff9a9fcf3568c8 R09: 0000000000000c6f

> Jun 02 00:38:26 pp3345-laptop kernel: R10: ffffffffb89f930c R11: 0000000000000003 R12: 0000000000000004

> Jun 02 00:38:26 pp3345-laptop kernel: R13: ffff9a9fc879a388 R14: 0000000000000000 R15: ffff9a9fc8799608

> Jun 02 00:38:26 pp3345-laptop kernel: FS:  0000000000000000(0000) GS:ffff9a9fcf340000(0000) knlGS:0000000000000000

> Jun 02 00:38:26 pp3345-laptop kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033

> Jun 02 00:38:26 pp3345-laptop kernel: CR2: 00001d3a916bf000 CR3: 0000000487c94003 CR4: 00000000003606e0


Am 02.06.19 um 15:48 schrieb Marc Haber:
> On Thu, May 30, 2019 at 10:12:57AM +0200, Marc Haber wrote:
>> on my primary notebook, a Lenovo X260, with an Intel Wireless 8260
>> (8086:24f3), running Debian unstable, I have started to see network
>> hangs since upgrading to kernel 5.1. In this situation, I cannot
>> restart Network-Manager (the call just hangs), I can log out of X, but
>> the system does not cleanly shut down and I need to Magic SysRq myself
>> out of the running system. This happens about once every two days.
> 
> The issue is also present in 5.1.5 and 5.1.6.
> 
> Greetings
> Marc
> 

Re: iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

[Marc Haber]

On Fri, Jun 07, 2019 at 10:20:56PM +0200, Yussuf Khalil wrote:
> CC'ing iwlwifi maintainers to get some attention for this issue.
> 
> I am experiencing the very same bug on a ThinkPad T480s running 5.1.6 with
> Fedora 30. A friend is seeing it on his X1 Carbon 6th Gen, too. Both have an
> "Intel Corporation Wireless 8265 / 8275" card according to lspci.

I have an older 04:00.0 Network controller [0280]: Intel Corporation
Wireless 8260 [8086:24f3] (rev 3a) on a Thinkpad X260.

> Notably, in all cases I've observed it occurred right after roaming from one
> AP to another (though I can't guarantee this isn't a coincidence).

I also have multiple Access Points broadcasting the same SSID in my
house, and yes, I experience those issues often when I move from one
part of the hose to another. I have, however, also experienced it in a
hotel when I was using the mobile hotspot offered by my mobile, so that
was clearly not a roaming situation.

Greetings
Marc

-- 
-----------------------------------------------------------------------------
Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
Leimen, Germany    |  lose things."    Winona Ryder | Fon: *49 6224 1600402
Nordisch by Nature |  How to make an American Quilt | Fax: *49 6224 1600421

Re: iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

[Marc Haber]

On Sun, Jun 02, 2019 at 03:48:42PM +0200, Marc Haber wrote:
> On Thu, May 30, 2019 at 10:12:57AM +0200, Marc Haber wrote:
> > on my primary notebook, a Lenovo X260, with an Intel Wireless 8260
> > (8086:24f3), running Debian unstable, I have started to see network
> > hangs since upgrading to kernel 5.1. In this situation, I cannot
> > restart Network-Manager (the call just hangs), I can log out of X, but
> > the system does not cleanly shut down and I need to Magic SysRq myself
> > out of the running system. This happens about once every two days.
> 
> The issue is also present in 5.1.5 and 5.1.6.

Almost a month later, 5.1.15 still crashes about twice a day on my
Notebook. The error message seems pretty clear to me, how can I go on
from there and may be identify a line number outside of a library?

Greetings
Marc

-- 
-----------------------------------------------------------------------------
Marc Haber         | "I don't trust Computers. They | Mailadresse im Header
Leimen, Germany    |  lose things."    Winona Ryder | Fon: *49 6224 1600402
Nordisch by Nature |  How to make an American Quilt | Fax: *49 6224 1600421

Re: iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

[Skyler Hawthorne]

Hello, I'm also still experiencing this issue on 5.1.15. It's making it
very difficult to use my work laptop in my office, since it has many
access points and frequently has to reauthenticate. I hit this bug 1-3
times per day, and the only way to fix it is a hard shutdown. Has there
been any effort to identify and/or fix the cause?

-- 
Skyler

On Tue, 2019-06-25 at 15:03 +0200, Marc Haber wrote:
> On Sun, Jun 02, 2019 at 03:48:42PM +0200, Marc Haber wrote:
> > On Thu, May 30, 2019 at 10:12:57AM +0200, Marc Haber wrote:
> > > on my primary notebook, a Lenovo X260, with an Intel Wireless
> > > 8260
> > > (8086:24f3), running Debian unstable, I have started to see
> > > network
> > > hangs since upgrading to kernel 5.1. In this situation, I cannot
> > > restart Network-Manager (the call just hangs), I can log out of
> > > X, but
> > > the system does not cleanly shut down and I need to Magic SysRq
> > > myself
> > > out of the running system. This happens about once every two
> > > days.
> > 
> > The issue is also present in 5.1.5 and 5.1.6.
> 
> Almost a month later, 5.1.15 still crashes about twice a day on my
> Notebook. The error message seems pretty clear to me, how can I go on
> from there and may be identify a line number outside of a library?
> 
> Greetings
> Marc
> 
> 

Re: iwl_mvm_add_new_dqa_stream_wk BUG in lib/list_debug.c:56

[Luciano Coelho]

On Fri, 2019-06-07 at 22:44 +0200, Marc Haber wrote:
> On Fri, Jun 07, 2019 at 10:20:56PM +0200, Yussuf Khalil wrote:
> > CC'ing iwlwifi maintainers to get some attention for this issue.
> > 
> > I am experiencing the very same bug on a ThinkPad T480s running 5.1.6 with
> > Fedora 30. A friend is seeing it on his X1 Carbon 6th Gen, too. Both have an
> > "Intel Corporation Wireless 8265 / 8275" card according to lspci.
> 
> I have an older 04:00.0 Network controller [0280]: Intel Corporation
> Wireless 8260 [8086:24f3] (rev 3a) on a Thinkpad X260.
> 
> > Notably, in all cases I've observed it occurred right after roaming from one
> > AP to another (though I can't guarantee this isn't a coincidence).
> 
> I also have multiple Access Points broadcasting the same SSID in my
> house, and yes, I experience those issues often when I move from one
> part of the hose to another. I have, however, also experienced it in a
> hotel when I was using the mobile hotspot offered by my mobile, so that
> was clearly not a roaming situation.

Hi,

Sorry this got under the radar for a while.  Yesterday someone created
a bugzilla entry with the same error:

https://bugzilla.kernel.org/show_bug.cgi?id=204141

I'm going to file an internal bug report and then have someone look
further into it.

Any additional comments/reproductions/etc. please use that bugzilla
entry.

Thanks for reporting!

--
Cheers,
Luca.