Hi, I still have the same errore with kernel 5.15.0-33-generic !! Is that ok for you ?
See below : [ 103.752602] ================================================================================ [ 103.752613] UBSAN: invalid-load in /build/linux-MLl0vf/linux-5.15.0/net/mac80211/status.c:1164:21 [ 103.752622] load of value 255 is not a valid value for type '_Bool' [ 103.752628] CPU: 0 PID: 0 Comm: swapper/0 Tainted: P OE 5.15.0-33-generic #34-Ubuntu [ 103.752636] Hardware name: ASUSTeK COMPUTER INC. N550JK/N550JK, BIOS N550JK.208 09/26/2014 [ 103.752640] Call Trace: [ 103.752643] <IRQ> [ 103.752649] show_stack+0x52/0x58 [ 103.752666] dump_stack_lvl+0x4a/0x5f [ 103.752679] dump_stack+0x10/0x12 [ 103.752686] ubsan_epilogue+0x9/0x45 [ 103.752694] __ubsan_handle_load_invalid_value.cold+0x44/0x49 [ 103.752703] ieee80211_tx_status_ext.cold+0x4e/0x5f [mac80211] [ 103.752893] ieee80211_tx_status+0x72/0xa0 [mac80211] [ 103.752995] ath_txq_unlock_complete+0x12d/0x160 [ath9k] [ 103.753021] ath_tx_edma_tasklet+0xef/0x4c0 [ath9k] [ 103.753046] ? del_timer_sync+0x6c/0xb0 [ 103.753056] ath9k_tasklet+0x14e/0x290 [ath9k] [ 103.753079] tasklet_action_common.constprop.0+0xc0/0xf0 [ 103.753091] tasklet_action+0x22/0x30 [ 103.753100] __do_softirq+0xd9/0x2e3 [ 103.753113] irq_exit_rcu+0x8c/0xb0 [ 103.753122] common_interrupt+0x8a/0xa0 [ 103.753134] </IRQ> [ 103.753137] <TASK> [ 103.753139] asm_common_interrupt+0x1e/0x40 [ 103.753149] RIP: 0010:cpuidle_enter_state+0xd9/0x620 [ 103.753161] Code: 3d f4 4b 7e 7a e8 07 ae 6c ff 49 89 c7 0f 1f 44 00 00 31 ff e8 58 ba 6c ff 80 7d d0 00 0f 85 5d 01 00 00 fb 66 0f 1f 44 00 00 <45> 85 f6 0f 88 69 01 00 00 4d 63 ee 49 83 fd 09 0f 87 e3 03 00 00 [ 103.753167] RSP: 0018:ffffffff86c03db8 EFLAGS: 00000246 [ 103.753174] RAX: ffff88c12ee30f00 RBX: ffffc6afffc21500 RCX: 0000000000000000 [ 103.753179] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 103.753182] RBP: ffffffff86c03e08 R08: 0000001828226b71 R09: 000000000007a120 [ 103.753187] R10: 0000000000000006 R11: 071c71c71c71c71c R12: ffffffff86ed36c0 [ 103.753191] R13: 0000000000000005 R14: 0000000000000005 R15: 0000001828226b71 [ 103.753199] ? cpuidle_enter_state+0xc8/0x620 [ 103.753209] cpuidle_enter+0x2e/0x40 [ 103.753216] cpuidle_idle_call+0x13e/0x1e0 [ 103.753225] do_idle+0x83/0xf0 [ 103.753232] cpu_startup_entry+0x20/0x30 [ 103.753239] rest_init+0xd3/0x100 [ 103.753246] ? acpi_enable_subsystem+0x20b/0x213 [ 103.753257] arch_call_rest_init+0xe/0x1b [ 103.753269] start_kernel+0x4b6/0x4d3 [ 103.753279] x86_64_start_reservations+0x24/0x26 [ 103.753289] x86_64_start_kernel+0xe4/0xeb [ 103.753298] secondary_startup_64_no_verify+0xc2/0xcb [ 103.753313] </TASK> [ 103.753341] ================================================================================ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1968631 Title: regression in jammy kernel 5.15 for module ath9k Status in linux package in Ubuntu: Confirmed Bug description: wireless connection is unstable with kernel 5.15 in jammy release. the following line is in my log, ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006100 the bug appears to no longer be present in kernel 5.17.2 from the mainline kernel ppa. lsb_release -rd output: Description: Ubuntu Jammy Jellyfish (development branch) Release: 22.04 ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-5.15.0-25-generic 5.15.0-25.25 ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30 Uname: Linux 5.15.0-25-generic x86_64 ApportVersion: 2.20.11-0ubuntu80 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: david 1871 F.... pulseaudio /dev/snd/controlC1: david 1871 F.... pulseaudio CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon Apr 11 18:05:36 2022 InstallationDate: Installed on 2022-02-01 (69 days ago) InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012) MachineType: ASUSTeK COMPUTER INC. X550LA ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-25-generic root=UUID=eb3fe525-e2d6-4de4-aa48-57ebb0fa0881 ro libata.noacpi=1 quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.15.0-25-generic N/A linux-backports-modules-5.15.0-25-generic N/A linux-firmware 20220329.git681281e4-0ubuntu1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to jammy on 2022-04-09 (2 days ago) dmi.bios.date: 05/14/2014 dmi.bios.release: 4.6 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X550LA.508 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X550LA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: ATN12345678901234567 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX550LA.508:bd05/14/2014:br4.6:svnASUSTeKCOMPUTERINC.:pnX550LA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX550LA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:skuASUS-NotebookSKU: dmi.product.family: X dmi.product.name: X550LA dmi.product.sku: ASUS-NotebookSKU dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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