AMDGPU resume fail with RX 560

[Matias N. Goldberg]

Description: Ubuntu 18.04.5 LTS

In kernel 5.4.0-51 (known good: 5.4.0-48), resuming from suspend results in the monitors not turning up and the keyboard locked up. However the system still responds to SSH sessions.

 - The bug sometimes also triggers when plugging or unplugging an HDMI TV.
 - 'sudo shutdown now' will never finish. The kernel is stuck
 - 'sudo service lightdm restart' will never finish.
 - In my case dmesg nor xorg.log notice at all something went wrong
 - Trying to kill X reveals the following:

[ 1571.941734] Call Trace:
[ 1571.941747] __schedule+0x293/0x720
[ 1571.941752] ? __queue_work+0x14c/0x400
[ 1571.941758] schedule+0x33/0xa0
[ 1571.941765] rpm_resume+0x108/0x780
[ 1571.941769] ? __switch_to_asm+0x40/0x70
[ 1571.941776] ? wait_woken+0x80/0x80
[ 1571.941782] __pm_runtime_resume+0x4e/0x80
[ 1571.941939] amdgpu_drm_ioctl+0x39/0x80 [amdgpu]
[ 1571.941944] do_vfs_ioctl+0xa9/0x640
[ 1571.941950] ? __schedule+0x29b/0x720
[ 1571.941954] ksys_ioctl+0x75/0x80
[ 1571.941957] __x64_sys_ioctl+0x1a/0x20
[ 1571.941964] do_syscall_64+0x57/0x190
[ 1571.941968] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1571.941973] RIP: 0033:0x7f746d5a96d7
[ 1571.941982] Code: Bad RIP value.
[ 1571.941985] RSP: 002b:00007fff1ec6a7a8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010
[ 1571.941990] RAX: ffffffffffffffda RBX: 00007fff1ec6a7e0 RCX: 00007f746d5a96d7
[ 1571.941992] RDX: 00007fff1ec6a7e0 RSI: 00000000c06864a2 RDI: 000000000000000d
[ 1571.941994] RBP: 00007fff1ec6a7e0 R08: 0000000000000000 R09: 0000000000000000
[ 1571.941996] R10: 0000000000000000 R11: 0000000000003246 R12: 00000000c06864a2
[ 1571.941998] R13: 000000000000000d R14: 000055f52f391780 R15: 000055f52f2176a0
[ 1571.942021] INFO: task chrome:shlo0:2563 blocked for more than 120 seconds.
[ 1571.942026] Tainted: G OE 5.4.0-51-generic #56~18.04.1-Ubuntu
[ 1571.942029] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

[ 1692.774402] python3:disk$2 D 0 6187 1 0x80004002
[ 1692.774404] Call Trace:
[ 1692.774410] __schedule+0x293/0x720
[ 1692.774414] ? __switch_to_asm+0x40/0x70
[ 1692.774419] schedule+0x33/0xa0
[ 1692.774424] schedule_preempt_disabled+0xe/0x10
[ 1692.774429] __mutex_lock.isra.9+0x26d/0x4e0
[ 1692.774436] __mutex_lock_slowpath+0x13/0x20
[ 1692.774441] ? __mutex_lock_slowpath+0x13/0x20
[ 1692.774446] mutex_lock+0x2f/0x40
[ 1692.774472] drm_release+0x2e/0xd0 [drm]
[ 1692.774476] __fput+0xc6/0x260
[ 1692.774481] ____fput+0xe/0x10
[ 1692.774485] task_work_run+0x9d/0xc0
[ 1692.774491] do_exit+0x382/0xb80
[ 1692.774496] ? mem_cgroup_try_charge+0x75/0x190
[ 1692.774503] do_group_exit+0x43/0xa0
[ 1692.774506] get_signal+0x14f/0x860
[ 1692.774512] do_signal+0x34/0x6d0
[ 1692.774515] ? strlcpy+0x32/0x50
[ 1692.774519] ? __x64_sys_futex+0x13f/0x190
[ 1692.774525] exit_to_usermode_loop+0x90/0x130
[ 1692.774530] do_syscall_64+0x170/0x190
[ 1692.774534] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1692.774536] RIP: 0033:0x7f7f31d789f3
[ 1692.774541] Code: Bad RIP value.
[ 1692.774543] RSP: 002b:00007f7ef49abd10 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
[ 1692.774546] RAX: fffffffffffffe00 RBX: 0000000002041e80 RCX: 00007f7f31d789f3
[ 1692.774548] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000002041ea8
[ 1692.774549] RBP: 0000000002041ea4 R08: 0000000000000000 R09: 0000000000000000
[ 1692.774551] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000002041ea8
[ 1692.774553] R13: 0000000000000000 R14: 0000000002041e58 R15: 0000000000000002
[ 1692.774558] INFO: task kworker/4:1:6532 blocked for more than 241 seconds.
[ 1692.774561] Tainted: G OE 5.4.0-51-generic #56~18.04.1-Ubuntu
[ 1692.774563] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1692.774566] kworker/4:1 D 0 6532 2 0x80004000

This bug seems to be reported in upstream:

https://bugzilla.kernel.org/show_bug.cgi?id=204241
https://bugzilla.kernel.org/show_bug.cgi?id=209457

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.4.0-51-generic 5.4.0-51.56~18.04.1
ProcVersionSignature: Ubuntu 5.4.0-48.52~18.04.1-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CurrentDesktop: XFCE
Date: Thu Oct 15 20:04:48 2020
InstallationDate: Installed on 2017-12-22 (1028 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: linux-signed-hwe-5.4
UpgradeStatus: Upgraded to bionic on 2018-05-26 (873 days ago)