Ubuntu
linux package

UBSAN: array-index-out-of-bounds in /build/linux-HMZHpV/linux-5.15.0/drivers/net/wireless/ath/ath5k/base.c:1695:20

Bug #1972140 reported by js1 on 2022-05-09

This bug affects 4 people

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

[114914.279420] ================================================================================
[114914.279431] UBSAN: array-index-out-of-bounds in /build/linux-HMZHpV/linux-5.15.0/drivers/net/wireless/ath/ath5k/base.c:1695:20
[114914.279436] index 4 is out of range for type 'ieee80211_tx_rate [4]'
[114914.279440] CPU: 1 PID: 0 Comm: swapper/1 Tainted: P IOE 5.15.0-27-generic #28-Ubuntu
[114914.279445] Hardware name: Dell Inc. Precision WorkStation T7500 /0D881F, BIOS A18 10/15/2018
[114914.279448] Call Trace:
[114914.279451] <IRQ>
[114914.279455] show_stack+0x52/0x58
[114914.279465] dump_stack_lvl+0x4a/0x5f
[114914.279475] dump_stack+0x10/0x12
[114914.279478] ubsan_epilogue+0x9/0x45
[114914.279482] __ubsan_handle_out_of_bounds.cold+0x44/0x49
[114914.279487] ? iommu_dma_unmap_page+0x4a/0x50
[114914.279492] ath5k_tx_frame_completed.constprop.0+0x279/0x2c0 [ath5k]
[114914.279507] ath5k_tx_processq+0xb1/0x1c0 [ath5k]
[114914.279519] ath5k_tasklet_tx+0x7b/0xf0 [ath5k]
[114914.279531] tasklet_action_common.constprop.0+0xc0/0xf0
[114914.279539] tasklet_action+0x22/0x30
[114914.279543] __do_softirq+0xd9/0x2e3
[114914.279550] irq_exit_rcu+0x8c/0xb0
[114914.279554] common_interrupt+0x8a/0xa0
[114914.279560] </IRQ>
[114914.279562] <TASK>
[114914.279563] asm_common_interrupt+0x1e/0x40
[114914.279568] RIP: 0010:cpuidle_enter_state+0xd9/0x620
[114914.279574] Code: 3d 14 5b be 67 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
[114914.279577] RSP: 0018:ffffadc58009be28 EFLAGS: 00000292
[114914.279582] RAX: 0000000000000000 RBX: ffffcdc57ee79f00 RCX: 0000000000000020
[114914.279584] RDX: 0000000002c71492 RSI: 0000000000003d66 RDI: ffffffff99807a40
[114914.279587] RBP: ffffadc58009be78 R08: 0000000000000000 R09: 00000000000c3500
[114914.279589] R10: 0000000000000005 R11: 071c71c71c71c71c R12: ffffffff99ad3580
[114914.279592] R13: 0000000000000004 R14: 0000000000000004 R15: 0000688390cd49d1
[114914.279597] ? cpuidle_enter_state+0x246/0x620
[114914.279601] cpuidle_enter+0x2e/0x40
[114914.279605] cpuidle_idle_call+0x13e/0x1e0
[114914.279610] do_idle+0x83/0xf0
[114914.279614] cpu_startup_entry+0x20/0x30
[114914.279617] start_secondary+0x12a/0x180
[114914.279622] secondary_startup_64_no_verify+0xc2/0xcb
[114914.279630] </TASK>
[114914.279632] ================================================================================

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.15.0-27-generic 5.15.0-27.28
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: js1 17869 F.... pulseaudio
/dev/snd/controlC1: js1 17869 F.... pulseaudio
CasperMD5CheckResult: unknown
CurrentDesktop: LXQt
Date: Sun May 8 23:36:44 2022
InstallationDate: Installed on 2020-02-02 (826 days ago)
InstallationMedia: Lubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017.1)
MachineType: Dell Inc. Precision WorkStation T7500
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-27-generic root=UUID=93fc02c6-baa4-4282-96d7-ea5ad53b0c78 ro ipv6.disable=1 splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.15.0-27-generic N/A
linux-backports-modules-5.15.0-27-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/15/2018
dmi.bios.release: 0.0
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A18
dmi.board.name: 0D881F
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA18:bd10/15/2018:br0.0:svnDellInc.:pnPrecisionWorkStationT7500:pvr:rvnDellInc.:rn0D881F:rvrA05:cvnDellInc.:ct7:cvr:sku:
dmi.product.name: Precision WorkStation T7500
dmi.sys.vendor: Dell Inc.

Tags:

Revision history for this message

js1 (sujiannming) wrote on 2022-05-09:

AlsaInfo.txt Edit (54.3 KiB, text/plain; charset="utf-8")
CRDA.txt Edit (542 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (93.0 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (2.9 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (539 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (33.9 KiB, text/plain; charset="utf-8")
Lspci-vt.txt Edit (4.6 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (1.0 KiB, text/plain; charset="utf-8")
Lsusb-t.txt Edit (1.0 KiB, text/plain; charset="utf-8")
Lsusb-v.txt Edit (27.4 KiB, text/plain; charset="utf-8")
PaInfo.txt Edit (90.3 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (4.2 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.0 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (328 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (3.4 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (6.9 KiB, text/plain; charset="utf-8")
PulseList.txt Edit (16.5 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (220.6 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (123.1 KiB, text/plain; charset="utf-8")
acpidump.txt Edit (127.4 KiB, text/plain; charset="utf-8")

Revision history for this message

Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote on 2022-05-09: Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status:	New → Confirmed

Revision history for this message

Kai-Heng Feng (kaihengfeng) wrote on 2022-05-18:

0001-ath5k-Fix-out-of-bound-access.patch Edit (1.9 KiB, text/plain)

Please give this patch a try, thanks!

Ubuntu Foundations Team Bug Bot (crichton) on 2022-05-18

tags:

added: patch

Revision history for this message

js1 (sujiannming) wrote on 2022-05-18:

Thanks for the quick response. Will a patched kernel binary be available from a ppa or testing repo? Or, do I need to download the deb src, patch, and build the kernel myself?

Revision history for this message

Kai-Heng Feng (kaihengfeng) wrote on 2022-05-19:

Binary can be found here:
https://people.canonical.com/~khfeng/lp1972140/

Revision history for this message

js1 (sujiannming) wrote on 2022-05-20:

Thank you very much for building the kernel. However, since this happened on 5.15.0-27, and the latest for 22.04 is 5.15.0-30, can you build against that version train? Sorry to be such a bother.

Revision history for this message

Kai-Heng Feng (kaihengfeng) wrote on 2022-05-20:

5.15 based kernel can be found here:
https://people.canonical.com/~khfeng/lp1972140-5.15/

Revision history for this message

js1 (sujiannming) wrote on 2022-05-21:

Awesome! Can you please also upload the linux-header package for this build? The nvidia drivers won't build without it.

Module build for kernel 5.15.0-33-generic was skipped since the
kernel headers for this kernel does not seem to be installed.

Revision history for this message

Kai-Heng Feng (kaihengfeng) wrote on 2022-05-23:

Hmm, but this bug doesn't need NVIDIA to work to be verified.

Revision history for this message

js1 (sujiannming) wrote on 2022-05-23:

#10

Bro, X11 will not start on my computer (suffering from this bug) without the nvidia driver. If I cannot use my computer, I cannot reliably report back if your patch works.

Revision history for this message

Kai-Heng Feng (kaihengfeng) wrote on 2022-05-23:

#11

Please use "nomodeset" to bypass nvidia.

Revision history for this message

js1 (sujiannming) wrote on 2022-05-23:

#12

Download full text (8.2 KiB)

"nomodeset" did not work. I have taken the official 5.15.0-33-generic update. Now I get this stack traces:

"nomodeset" did not work.  I have taken the official 5.15.0-33-generic update.  Now I get this stack traces:

[   46.083490] ================================================================================
[   46.138353] UBSAN: invalid-load in /build/linux-MLl0vf/linux-5.15.0/drivers/net/wireless/ath/ath5k/base.c:497:16                                                                                     
[   46.197259] load of value 255 is not a valid value for type '_Bool'
[   46.228123] CPU: 0 PID: 705 Comm: NetworkManager Tainted: P          IOE     5.15.0-33-generic #34-Ubuntu
[   46.228127] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[   46.228129] Call Trace:
[   46.228132]  <TASK>
[   46.228135]  show_stack+0x52/0x58
[   46.228143]  dump_stack_lvl+0x4a/0x5f
[   46.228150]  dump_stack+0x10/0x12
[   46.228153]  ubsan_epilogue+0x9/0x45
[   46.228156]  __ubsan_handle_load_invalid_value.cold+0x44/0x49
[   46.228160]  ath5k_vif_iter.cold+0x67/0x70 [ath5k]
[   46.228173]  ath5k_update_bssid_mask_and_opmode+0x63/0x150 [ath5k]
[   46.228183]  ath5k_add_interface+0x1bb/0x260 [ath5k]
[   46.228193]  drv_add_interface+0x4e/0x100 [mac80211]
[   46.228262]  ieee80211_do_open+0x4f9/0x9c0 [mac80211]
[   46.228316]  ? ieee80211_check_concurrent_iface+0x158/0x1c0 [mac80211]
[   46.228370]  ieee80211_open+0x6c/0x90 [mac80211]
[   46.228423]  __dev_open+0xf3/0x1c0
[   46.228428]  __dev_change_flags+0x1a3/0x220
[   46.228431]  dev_change_flags+0x26/0x60
[   46.228434]  do_setlink+0x28a/0xc50
[   46.228437]  ? dev_get_alias+0x35/0x40
[   46.228440]  ? dev_get_alias+0x35/0x40
[   46.228442]  ? nla_put_ifalias+0x38/0xa0
[   46.228445]  ? __nla_validate_parse+0x4c/0x1a0
[   46.228452]  __rtnl_newlink+0x618/0xa20
[   46.228455]  ? __rtnl_newlink+0x14b/0xa20
[   46.228458]  ? __nla_put+0x20/0x30
[   46.228461]  ? __nla_reserve+0x41/0x50
[   46.228464]  ? __nla_reserve+0x41/0x50
[   46.228467]  ? apparmor_inet_conn_request+0x50/0x50
[   46.228471]  ? security_sock_rcv_skb+0x2f/0x50
[   46.228475]  ? skb_queue_tail+0x48/0x50
[   46.228478]  ? sock_def_readable+0x4b/0x80
[   46.228483]  ? __netlink_sendskb+0x62/0x80
[   46.228488]  ? netlink_unicast+0x2f3/0x330
[   46.228492]  ? rtnl_getlink+0x392/0x410
[   46.228499]  ? kmem_cache_alloc_trace+0x19e/0x2e0
[   46.228505]  rtnl_newlink+0x49/0x70
[   46.228507]  rtnetlink_rcv_msg+0x15d/0x400
[   46.228510]  ? rtnl_calcit.isra.0+0x130/0x130
[   46.228513]  netlink_rcv_skb+0x55/0x100
[   46.228517]  rtnetlink_rcv+0x15/0x20
[   46.228522]  netlink_unicast+0x21d/0x330
[   46.228526]  netlink_sendmsg+0x24c/0x4c0
[   46.228530]  sock_sendmsg+0x65/0x70
[   46.228533]  ____sys_sendmsg+0x24e/0x290
[   46.228536]  ? import_iovec+0x31/0x40
[   46.228540]  ? sendmsg_copy_msghdr+0x7b/0xa0
[   46.228543]  ? fput_many+0x4a/0x90
[   46.228548]  ___sys_sendmsg+0x81/0xc0
[   46.228551]  ? do_filp_open+0xb2/0x150
[   46.228555]  ? security_file_free+0x54/0x60
[   46.228560]  ? kmem_cache_free+0x245/0x290
[   46.228563]  ? rseq_get_rseq_cs.isra.0+0x1b/0x220
[   46.228569]  ? __call_rcu+0xa8/0x260
[   46.228574]  ? __fget_files+0x86/0xc0
[   46.228578]  ? __fget_light+0x32/0x80
[   46.228582]  __sys_sendmsg+0x62/0xb0
[   46.228586]  __x64_sys_sendmsg+0x1d/0x20
[   46.228589]  do_syscall_64+0x5c/0xc0
[   46.228595]  ? exit_to_user_mode_prepare+0x37/0xb0
[   46.228599]  ? syscall_exit_to_user_mode+0x27/0x50
[   46.228603]  ? do_syscall_64+0x69/0xc0
[   46.228606]  ? syscall_exit_to_user_mode+0x27/0x50
[   46.228609]  ? do_syscall_64+0x69/0xc0
[   46.228612]  ? asm_exc_page_fault+0x8/0x30
[   46.228616]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   46.228620] RIP: 0033:0x7fe5d68c4b4d
[   46.228624] Code: 28 89 54 24 1c 48 89 74 24 10 89 7c 24 08 e8 3a 8f f6 ff 8b 54 24 1c 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 33 44 89 c7 48 89 44 24 08 e8 7e 8f f6 ff 48
[   46.228626] RSP: 002b:00007fffb57fe780 EFLAGS: 00000293 ORIG_RAX: 000000000000002e
[   46.228631] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fe5d68c4b4d
[   46.228633] RDX: 0000000000000000 RSI: 00007fffb57fe7c0 RDI: 000000000000000c
[   46.228635] RBP: 00005591ac4ee040 R08: 0000000000000000 R09: 0000000000000000
[   46.228637] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
[   46.228638] R13: 00007fffb57fe910 R14: 00007fffb57fe90c R15: 0000000000000000
[   46.228642]  </TASK>
[   46.228643] ================================================================================
[   46.395947] ================================================================================
[   46.395955] UBSAN: invalid-load in /build/linux-MLl0vf/linux-5.15.0/drivers/net/wireless/ath/ath5k/base.c:488:16                                                                                     
[   46.395960] load of value 142 is not a valid value for type '_Bool'
[   46.395963] CPU: 0 PID: 735 Comm: wpa_supplicant Tainted: P          IOE     5.15.0-33-generic #34-Ubuntu
[   46.395967] Hardware name: Dell Inc. Precision WorkStation T7500  /0D881F, BIOS A18 10/15/2018
[   46.395969] Call Trace:
[   46.395972]  <TASK>
[   46.395975]  show_stack+0x52/0x58
[   46.395984]  dump_stack_lvl+0x4a/0x5f
[   46.395991]  dump_stack+0x10/0x12
[   46.395994]  ubsan_epilogue+0x9/0x45
[   46.395997]  __ubsan_handle_load_invalid_value.cold+0x44/0x49
[   46.396001]  ? dma_direct_map_sg+0x44/0xc0
[   46.396006]  ath5k_vif_iter.cold+0x13/0x70 [ath5k]
[   46.396020]  __iterate_interfaces+0xa2/0x100 [mac80211]
[   46.396101]  ? ath5k_tasklet_ani+0x30/0x30 [ath5k]
[   46.396110]  ieee80211_iterate_active_interfaces_atomic+0x11/0x20 [mac80211]
[   46.396172]  ath5k_configure_filter+0x114/0x190 [ath5k]
[   46.396182]  ieee80211_configure_filter+0x175/0x2d0 [mac80211]
[   46.396228]  __ieee80211_start_scan+0x2b6/0x650 [mac80211]
[   46.396278]  ieee80211_request_scan+0x30/0x50 [mac80211]
[   46.396328]  ieee80211_scan+0x62/0xf0 [mac80211]
[   46.396385]  rdev_scan+0x2d/0xb0 [cfg80211]
[   46.396453]  cfg80211_scan+0xf2/0x110 [cfg80211]
[   46.396498]  nl80211_trigger_scan+0x47a/0x920 [cfg80211]
[   46.396549]  genl_family_rcv_msg_doit+0xe7/0x150
[   46.396555]  genl_rcv_msg+0xe2/0x1e0
[   46.396559]  ? nl80211_send_scan_start+0xa0/0xa0 [cfg80211]
[   46.396609]  ? genl_get_cmd+0xd0/0xd0
[   46.396613]  netlink_rcv_skb+0x55/0x100
[   46.396617]  genl_rcv+0x29/0x40
[   46.396620]  netlink_unicast+0x21d/0x330
[   46.396624]  netlink_sendmsg+0x24c/0x4c0
[   46.396629]  sock_sendmsg+0x65/0x70
[   46.396633]  ____sys_sendmsg+0x24e/0x290
[   46.396635]  ? import_iovec+0x31/0x40
[   46.396640]  ? sendmsg_copy_msghdr+0x7b/0xa0
[   46.396644]  ___sys_sendmsg+0x81/0xc0
[   46.396648]  ? __check_object_size.part.0+0x3a/0x150
[   46.396653]  ? _copy_to_user+0x20/0x30
[   46.396656]  ? sock_getsockopt+0x110/0xd90
[   46.396661]  ? __check_object_size.part.0+0x3a/0x150
[   46.396664]  ? _copy_to_user+0x20/0x30
[   46.396668]  ? sock_getsockopt+0x110/0xd90
[   46.396671]  ? __cond_resched+0x1a/0x50
[   46.396677]  __sys_sendmsg+0x62/0xb0
[   46.396681]  __x64_sys_sendmsg+0x1d/0x20
[   46.396684]  do_syscall_64+0x5c/0xc0
[   46.396689]  ? do_syscall_64+0x69/0xc0
[   46.396692]  ? do_syscall_64+0x69/0xc0
[   46.396696]  ? __audit_syscall_exit+0x265/0x2c0
[   46.396701]  ? exit_to_user_mode_prepare+0x37/0xb0
[   46.396706]  ? exit_to_user_mode_prepare+0x37/0xb0
[   46.396709]  ? syscall_exit_to_user_mode+0x27/0x50
[   46.396712]  ? do_syscall_64+0x69/0xc0
[   46.396715]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   46.396720] RIP: 0033:0x7f8d2d1efb17
[   46.396724] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[   46.396727] RSP: 002b:00007ffd3a3620a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   46.396731] RAX: ffffffffffffffda RBX: 0000560443191ac0 RCX: 00007f8d2d1efb17
[   46.396733] RDX: 0000000000000000 RSI: 00007ffd3a3620e0 RDI: 0000000000000006
[   46.396735] RBP: 0000560443191da0 R08: 0000000000000004 R09: 0000560443267530
[   46.396737] R10: 00007ffd3a3621c0 R11: 0000000000000246 R12: 00005604432641d0
[   46.396739] R13: 00007ffd3a3620e0 R14: 0000000000000000 R15: 0000000000000000
[   46.396742]  </TASK>
[   46.396744] ================================================================================

Revision history for this message

Kai-Heng Feng (kaihengfeng) wrote on 2022-06-01:

#13

Alright, please give this one a try:
https://people.canonical.com/~khfeng/lp1972140

Revision history for this message

js1 (sujiannming) wrote on 2022-06-04:

#14

Same problem with latest official 5.15.0-35-generic. I am willing to test any patched 5.15 kernel build that also includes the linux-headers package. Thanks for your efforts.

Revision history for this message

Felipe Casado (vivamudhoney) wrote on 2023-04-15:

#15

This keeps happening in kernel 5.19.0-38-generic. I installed the 4 debs from the link above https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1972140/comments/13 then with grub I booted the linux-image-unsigned-5.18.0-4-generic_5.18.0-4.4 kernel. Result: It refuses to load the athk5 module. This is the dmesg output I get in modprobe aswell:

[ 4.314514] ath: disagrees about version of symbol ieee80211_get_channel_khz
[ 4.314516] ath: Unknown symbol ieee80211_get_channel_khz (err -22)
[ 4.314519] ath: disagrees about version of symbol wiphy_apply_custom_regulatory
[ 4.314520] ath: Unknown symbol wiphy_apply_custom_regulatory (err -22)
[ 4.314523] ath: disagrees about version of symbol freq_reg_info
[ 4.314523] ath: Unknown symbol freq_reg_info (err -22)

I will try to compile the kernel myself and check that is looking for the right modules.

Revision history for this message

Felipe Casado (vivamudhoney) wrote on 2023-05-23:

#16

I am able to compile the kernel with the patch you posted and now I am getting the following errors:

[ 78.330687] UBSAN: invalid-load in drivers/net/wireless/ath/ath5k/base.c:488:16
[ 78.330689] load of value 144 is not a valid value for type '_Bool'
and
[ 78.330842] UBSAN: invalid-load in drivers/net/wireless/ath/ath5k/base.c:497:16
[ 78.330843] load of value 255 is not a valid value for type '_Bool'

I can connect to the network with the card, but it disconnects itself from time to time from the router and loses connection spamming the following messages:

[ 3533.615792] AMD-Vi: Event logged [IO_PAGE_FAULT device=22:00.0 domain=0x000e address=0x0 flags=0x0000]
[ 3533.615802] AMD-Vi: Event logged [IO_PAGE_FAULT device=22:00.0 domain=0x000e address=0x20 flags=0x0000]
[ 3533.615808] AMD-Vi: Event logged [IO_PAGE_FAULT device=22:00.0 domain=0x000e address=0x40 flags=0x0000]
[ 3533.615812] AMD-Vi: Event logged [IO_PAGE_FAULT device=22:00.0 domain=0x000e address=0x60 flags=0x0000]

I found some messages saying that using kernel parameter iommu=soft helps here but this is not the case.

In case you update the patch I am willing to test it. Thanks in advance.

Revision history for this message

Felipe Casado (vivamudhoney) wrote on 2023-06-27:

#17

Update: The disconnection problems are unrelated to this ticket and can be fixed with the iommu=pt kernel parameter. The device seems to work without problems despite the UBSAN warnings.