Comment 0 for bug 1818881

The below happens on a regular basis on my DELL XPS 13 9380:

[77451.338493] RIP: 0010:ath10k_htt_rx_pop_paddr.isra.29+0xd9/0xf0 [ath10k_core]
[77451.338494] Code: 74 32 48 8b 87 10 02 00 00 48 85 c0 74 26 48 8b 40 28 48 85 c0 74 17 45 31 c0 b9 02 00 00 00 e8 dd c1 d7 db 48 89 d8 5b 5d c3 <0f> 0b 31 db 48 89 d8 5b 5d c3 48 8b 05 de 67 5a dc eb d1 0f 1f 40
[77451.338531] RSP: 0018:ffff9d996e503d78 EFLAGS: 00010246
[77451.338533] RAX: 0000000000000000 RBX: ffff9d97b7c12290 RCX: ffff9d96cbfd5528
[77451.338534] RDX: 0000000037af2804 RSI: ffff9d9944c51ed4 RDI: ffff9d9944c51de0
[77451.338535] RBP: ffff9d996e503d80 R08: 0000000000200000 R09: 0000000000000000
[77451.338537] R10: ffff9d94f045ecd8 R11: 00000000000001ff R12: ffff9d9944c51520
[77451.338538] R13: ffff9d996e503e40 R14: 0000000000000040 R15: ffff9d996e503e28
[77451.338540] FS: 0000000000000000(0000) GS:ffff9d996e500000(0000) knlGS:0000000000000000
[77451.338541] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[77451.338542] CR2: 00001f1104c31000 CR3: 000000017aa0a005 CR4: 00000000003606e0
[77451.338543] Call Trace:
[77451.338545] <IRQ>
[77451.338557] ath10k_htt_txrx_compl_task+0x3d6/0xe40 [ath10k_core]
[77451.338561] ? ath10k_pci_irq_msi_fw_unmask+0x70/0x70 [ath10k_pci]
[77451.338563] ? ath10k_pci_wake.part.24+0xa0/0xa0 [ath10k_pci]
[77451.338567] ath10k_pci_napi_poll+0x54/0x110 [ath10k_pci]
[77451.338571] net_rx_action+0x140/0x3a0
[77451.338575] __do_softirq+0xe4/0x2d4
[77451.338580] irq_exit+0xc5/0xd0
[77451.338582] do_IRQ+0x8a/0xe0
[77451.338585] common_interrupt+0xf/0xf
[77451.338586] </IRQ>
[77451.338589] RIP: 0010:cpuidle_enter_state+0xa5/0x2c0
[77451.338590] Code: 8b 3d df bf 9d 63 e8 6a 09 89 ff 48 89 c3 0f 1f 44 00 00 31 ff e8 cb 14 89 ff 45 84 ff 0f 85 c8 01 00 00 fb 66 0f 1f 44 00 00 <48> 2b 5d d0 48 ba cf f7 53 e3 a5 9b c4 20 48 89 d8 48 c1 fb 3f 48
[77451.338621] RSP: 0018:ffffaf4601993e50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffde
[77451.338623] RAX: ffff9d996e522c40 RBX: 000046710b80e2b6 RCX: 000000000000001f
[77451.338624] RDX: 000046710b80e2b6 RSI: 000000004041cc98 RDI: 0000000000000000
[77451.338625] RBP: ffffaf4601993e90 R08: 0000000000000002 R09: 00000000000224c0
[77451.338626] R10: ffffaf4601993e20 R11: 00000000000000d9 R12: 0000000000000004
[77451.338626] R13: ffff9d996e52ce00 R14: ffffffff9d3849f8 R15: 0000000000000000
[77451.338630] cpuidle_enter+0x17/0x20
[77451.338632] call_cpuidle+0x23/0x40
[77451.338634] do_idle+0x204/0x280
[77451.338636] cpu_startup_entry+0x73/0x80
[77451.338639] start_secondary+0x1ab/0x200
[77451.338642] secondary_startup_64+0xa5/0xb0
[77451.338643] ---[ end trace 22914e3b3a848f81 ]---
[77451.338655] ath10k_pci 0000:02:00.0: failed to pop paddr list: -2

$ uname -a
Linux perseus 4.18.0-15-generic #16~18.04.1-Ubuntu SMP Thu Feb 7 14:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

$ modinfo ath10k_pci
filename: /lib/modules/4.18.0-15-generic/kernel/drivers/net/wireless/ath/ath10k/ath10k_pci.ko
firmware: ath10k/QCA9377/hw1.0/board.bin
firmware: ath10k/QCA9377/hw1.0/firmware-5.bin
firmware: ath10k/QCA9377/hw1.0/firmware-6.bin
firmware: ath10k/QCA6174/hw3.0/board-2.bin
firmware: ath10k/QCA6174/hw3.0/board.bin
firmware: ath10k/QCA6174/hw3.0/firmware-6.bin
firmware: ath10k/QCA6174/hw3.0/firmware-5.bin
firmware: ath10k/QCA6174/hw3.0/firmware-4.bin
firmware: ath10k/QCA6174/hw2.1/board-2.bin
firmware: ath10k/QCA6174/hw2.1/board.bin
firmware: ath10k/QCA6174/hw2.1/firmware-5.bin
firmware: ath10k/QCA6174/hw2.1/firmware-4.bin
firmware: ath10k/QCA9887/hw1.0/board-2.bin
firmware: ath10k/QCA9887/hw1.0/board.bin
firmware: ath10k/QCA9887/hw1.0/firmware-5.bin
firmware: ath10k/QCA988X/hw2.0/board-2.bin
firmware: ath10k/QCA988X/hw2.0/board.bin
firmware: ath10k/QCA988X/hw2.0/firmware-5.bin
firmware: ath10k/QCA988X/hw2.0/firmware-4.bin
firmware: ath10k/QCA988X/hw2.0/firmware-3.bin
firmware: ath10k/QCA988X/hw2.0/firmware-2.bin
license: Dual BSD/GPL
description: Driver support for Qualcomm Atheros 802.11ac WLAN PCIe/AHB devices
author: Qualcomm Atheros
srcversion: D49EBAB0107B6CE28383BB8
alias: pci:v0000168Cd00000050sv*sd*bc*sc*i*
alias: pci:v0000168Cd00000042sv*sd*bc*sc*i*
alias: pci:v0000168Cd00000046sv*sd*bc*sc*i*
alias: pci:v0000168Cd00000056sv*sd*bc*sc*i*
alias: pci:v0000168Cd00000040sv*sd*bc*sc*i*
alias: pci:v0000168Cd0000003Esv*sd*bc*sc*i*
alias: pci:v0000168Cd00000041sv*sd*bc*sc*i*
alias: pci:v0000168Cd0000003Csv*sd*bc*sc*i*
alias: pci:v00000777d000011ACsv*sd*bc*sc*i*
depends: ath10k_core
retpoline: Y
intree: Y
name: ath10k_pci
vermagic: 4.18.0-15-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
parm: irq_mode:0: auto, 1: legacy, 2: msi (default: 0) (uint)
parm: reset_mode:0: auto, 1: warm only (default: 0) (uint)

$ lspci | grep -i atheros
02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)

I've updated the firmware manually as a first step trying to resolve the issue per
https://www.dell.com/community/Linux-Developer-Systems/XPS-13-9370-ath10k-pci-firmware-crash/td-p/6114945

I'm not sure whether this is related to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1730331

but it doesn't seem to have been resolved. As a side-note, seems as if linux-firmware doesn't ship the latest for the QCA6174.