Public bug reported: The following message appears in dmesg whenever the ath9k driver is loaded on my machine. There are significant performance problems with the wireless under load (frequently disconnecting and reconnecting to the network, dropped packets, etc). Unloading the wireless modules (via "rmmod ath9k ath9k_common ath9k_hw ath mac80211 cfg80211") and reloading it helps for a few minutes.
[ 22.267666] ================================================================================ [ 22.267673] UBSAN: invalid-load in /build/linux-WD899k/linux-5.15.0/net/mac80211/status.c:1164:21 [ 22.267677] load of value 255 is not a valid value for type '_Bool' [ 22.267680] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.0-30-generic #31-Ubuntu [ 22.267683] Hardware name: Dell Inc. Latitude 3440/05J70X, BIOS A13 05/24/2016 [ 22.267685] Call Trace: [ 22.267687] <IRQ> [ 22.267691] show_stack+0x52/0x58 [ 22.267698] dump_stack_lvl+0x4a/0x5f [ 22.267706] dump_stack+0x10/0x12 [ 22.267709] ubsan_epilogue+0x9/0x45 [ 22.267712] __ubsan_handle_load_invalid_value.cold+0x44/0x49 [ 22.267716] ieee80211_tx_status_ext.cold+0x4e/0x5f [mac80211] [ 22.267795] ieee80211_tx_status+0x72/0xa0 [mac80211] [ 22.267846] ath_txq_unlock_complete+0x12d/0x160 [ath9k] [ 22.267858] ath_tx_edma_tasklet+0xef/0x4c0 [ath9k] [ 22.267869] ? del_timer_sync+0x6c/0xb0 [ 22.267874] ath9k_tasklet+0x14e/0x290 [ath9k] [ 22.267883] tasklet_action_common.constprop.0+0xc0/0xf0 [ 22.267889] tasklet_action+0x22/0x30 [ 22.267893] __do_softirq+0xd9/0x2e3 [ 22.267899] irq_exit_rcu+0x8c/0xb0 [ 22.267902] common_interrupt+0x8a/0xa0 [ 22.267907] </IRQ> [ 22.267908] <TASK> [ 22.267910] asm_common_interrupt+0x1e/0x40 [ 22.267914] RIP: 0010:cpuidle_enter_state+0xd9/0x620 [ 22.267920] Code: 3d c4 4b 9e 4f e8 d7 ad 6c ff 49 89 c7 0f 1f 44 00 00 31 ff e8 28 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 [ 22.267923] RSP: 0018:ffffb9f8000a7e28 EFLAGS: 00000246 [ 22.267927] RAX: ffff903413ab0f00 RBX: ffffd9f7ffc80000 RCX: 0000000000000000 [ 22.267929] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 22.267931] RBP: ffffb9f8000a7e78 R08: 000000052f4131a0 R09: 0000000000004e20 [ 22.267933] R10: 0000000000000009 R11: 071c71c71c71c71c R12: ffffffffb1cd36c0 [ 22.267935] R13: 0000000000000001 R14: 0000000000000001 R15: 000000052f4131a0 [ 22.267939] ? cpuidle_enter_state+0xc8/0x620 [ 22.267944] cpuidle_enter+0x2e/0x40 [ 22.267947] cpuidle_idle_call+0x13e/0x1e0 [ 22.267952] do_idle+0x83/0xf0 [ 22.267955] cpu_startup_entry+0x20/0x30 [ 22.267958] start_secondary+0x12a/0x180 [ 22.267962] secondary_startup_64_no_verify+0xc2/0xcb [ 22.267968] </TASK> [ 22.267969] ================================================================================ ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-modules-extra-5.15.0-30-generic 5.15.0-30.31 ProcVersionSignature: Ubuntu 5.15.0-30.31-generic 5.15.30 Uname: Linux 5.15.0-30-generic x86_64 ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: paulv 269946 F.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: XFCE Date: Wed May 18 20:43:40 2022 HibernationDevice: RESUME=/dev/mapper/vg-swap MachineType: Dell Inc. Latitude 3440 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-30-generic root=/dev/mapper/vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.15.0-30-generic N/A linux-backports-modules-5.15.0-30-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3 SourcePackage: linux UpgradeStatus: Upgraded to jammy on 2022-05-14 (4 days ago) dmi.bios.date: 05/24/2016 dmi.bios.release: 1.3 dmi.bios.vendor: Dell Inc. dmi.bios.version: A13 dmi.board.name: 05J70X dmi.board.vendor: Dell Inc. dmi.board.version: A13 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.ec.firmware.release: 1.3 dmi.modalias: dmi:bvnDellInc.:bvrA13:bd05/24/2016:br1.3:efr1.3:svnDellInc.:pnLatitude3440:pvrNotSpecified:rvnDellInc.:rn05J70X:rvrA13:cvnDellInc.:ct8:cvrNotSpecified:skuLatitude3440: dmi.product.name: Latitude 3440 dmi.product.sku: Latitude 3440 dmi.product.version: Not Specified dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug jammy -- 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/1974152 Title: Error in dmesg when loading ath9k wireless driver Status in linux package in Ubuntu: New Bug description: The following message appears in dmesg whenever the ath9k driver is loaded on my machine. There are significant performance problems with the wireless under load (frequently disconnecting and reconnecting to the network, dropped packets, etc). Unloading the wireless modules (via "rmmod ath9k ath9k_common ath9k_hw ath mac80211 cfg80211") and reloading it helps for a few minutes. [ 22.267666] ================================================================================ [ 22.267673] UBSAN: invalid-load in /build/linux-WD899k/linux-5.15.0/net/mac80211/status.c:1164:21 [ 22.267677] load of value 255 is not a valid value for type '_Bool' [ 22.267680] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.0-30-generic #31-Ubuntu [ 22.267683] Hardware name: Dell Inc. Latitude 3440/05J70X, BIOS A13 05/24/2016 [ 22.267685] Call Trace: [ 22.267687] <IRQ> [ 22.267691] show_stack+0x52/0x58 [ 22.267698] dump_stack_lvl+0x4a/0x5f [ 22.267706] dump_stack+0x10/0x12 [ 22.267709] ubsan_epilogue+0x9/0x45 [ 22.267712] __ubsan_handle_load_invalid_value.cold+0x44/0x49 [ 22.267716] ieee80211_tx_status_ext.cold+0x4e/0x5f [mac80211] [ 22.267795] ieee80211_tx_status+0x72/0xa0 [mac80211] [ 22.267846] ath_txq_unlock_complete+0x12d/0x160 [ath9k] [ 22.267858] ath_tx_edma_tasklet+0xef/0x4c0 [ath9k] [ 22.267869] ? del_timer_sync+0x6c/0xb0 [ 22.267874] ath9k_tasklet+0x14e/0x290 [ath9k] [ 22.267883] tasklet_action_common.constprop.0+0xc0/0xf0 [ 22.267889] tasklet_action+0x22/0x30 [ 22.267893] __do_softirq+0xd9/0x2e3 [ 22.267899] irq_exit_rcu+0x8c/0xb0 [ 22.267902] common_interrupt+0x8a/0xa0 [ 22.267907] </IRQ> [ 22.267908] <TASK> [ 22.267910] asm_common_interrupt+0x1e/0x40 [ 22.267914] RIP: 0010:cpuidle_enter_state+0xd9/0x620 [ 22.267920] Code: 3d c4 4b 9e 4f e8 d7 ad 6c ff 49 89 c7 0f 1f 44 00 00 31 ff e8 28 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 [ 22.267923] RSP: 0018:ffffb9f8000a7e28 EFLAGS: 00000246 [ 22.267927] RAX: ffff903413ab0f00 RBX: ffffd9f7ffc80000 RCX: 0000000000000000 [ 22.267929] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 22.267931] RBP: ffffb9f8000a7e78 R08: 000000052f4131a0 R09: 0000000000004e20 [ 22.267933] R10: 0000000000000009 R11: 071c71c71c71c71c R12: ffffffffb1cd36c0 [ 22.267935] R13: 0000000000000001 R14: 0000000000000001 R15: 000000052f4131a0 [ 22.267939] ? cpuidle_enter_state+0xc8/0x620 [ 22.267944] cpuidle_enter+0x2e/0x40 [ 22.267947] cpuidle_idle_call+0x13e/0x1e0 [ 22.267952] do_idle+0x83/0xf0 [ 22.267955] cpu_startup_entry+0x20/0x30 [ 22.267958] start_secondary+0x12a/0x180 [ 22.267962] secondary_startup_64_no_verify+0xc2/0xcb [ 22.267968] </TASK> [ 22.267969] ================================================================================ ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-modules-extra-5.15.0-30-generic 5.15.0-30.31 ProcVersionSignature: Ubuntu 5.15.0-30.31-generic 5.15.30 Uname: Linux 5.15.0-30-generic x86_64 ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: paulv 269946 F.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: XFCE Date: Wed May 18 20:43:40 2022 HibernationDevice: RESUME=/dev/mapper/vg-swap MachineType: Dell Inc. Latitude 3440 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-30-generic root=/dev/mapper/vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.15.0-30-generic N/A linux-backports-modules-5.15.0-30-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3 SourcePackage: linux UpgradeStatus: Upgraded to jammy on 2022-05-14 (4 days ago) dmi.bios.date: 05/24/2016 dmi.bios.release: 1.3 dmi.bios.vendor: Dell Inc. dmi.bios.version: A13 dmi.board.name: 05J70X dmi.board.vendor: Dell Inc. dmi.board.version: A13 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.ec.firmware.release: 1.3 dmi.modalias: dmi:bvnDellInc.:bvrA13:bd05/24/2016:br1.3:efr1.3:svnDellInc.:pnLatitude3440:pvrNotSpecified:rvnDellInc.:rn05J70X:rvrA13:cvnDellInc.:ct8:cvrNotSpecified:skuLatitude3440: dmi.product.name: Latitude 3440 dmi.product.sku: Latitude 3440 dmi.product.version: Not Specified dmi.sys.vendor: Dell Inc. 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