Interesting that others are seeing this now. I continued to build and use a custom patched kernel for the entirety of 22.10. But from 23.04 onward, I've not had any issues. I'm currently running 23.10 with kernel 6.5.0-10-generic.
-- 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/1995150 Title: kernel NULL pointer dereference after monitor wake Status in linux package in Ubuntu: Confirmed Bug description: I ran into a bug shortly after upgrading from 22.04 to 22.10. I have 2 monitors connected to a Radeon R9 FURY / NANO Series via DP cables. When returning to the PC after a screen lock (when both monitors had entered a power saving mode), the second monitor did not wake up. I see the following warning and `kernel NULL pointer dereference` in the systemd journal: Oct 28 12:24:11 desktop kernel: ------------[ cut here ]------------ Oct 28 12:24:11 desktop kernel: WARNING: CPU: 12 PID: 91 at drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dce110/dce110_clk_mgr.c:140 dce110_fill_display_configs+0x83/0x2e0 [amdgpu] Oct 28 12:24:11 desktop kernel: Modules linked in: xt_multiport tls nf_conntrack_netlink xfrm_user xfrm_algo xt_addrtype br_netfilter nvme_fabrics rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp nft_compat nft_chain_nat n> Oct 28 12:24:11 desktop kernel: gigabyte_wmi rapl drm_kms_helper fb_sys_fops snd_timer syscopyarea iwlwifi(O) ccp sysfillrect snd sysimgblt k10temp soundcore cfg80211(O) iwlwifi_compat(O) mac_hid msr parport_pc ppdev lp parport drm ramoops pstore_blk reed_solomon pstore_zone efi_> Oct 28 12:24:11 desktop kernel: CPU: 12 PID: 91 Comm: kworker/12:0H Tainted: G O 5.19.0-23.24-justin-stock-generic #stock Oct 28 12:24:11 desktop kernel: Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS PRO WIFI/X570 AORUS PRO WIFI, BIOS F21 07/31/2020 Oct 28 12:24:11 desktop kernel: Workqueue: events_highpri dm_irq_work_func [amdgpu] Oct 28 12:24:11 desktop kernel: RIP: 0010:dce110_fill_display_configs+0x83/0x2e0 [amdgpu] Oct 28 12:24:11 desktop kernel: Code: 89 dd 31 db 4c 63 f3 49 83 fe 05 0f 87 80 01 00 00 4d 39 65 00 0f 84 29 01 00 00 83 c3 01 49 81 c5 10 08 00 00 83 fb 06 75 da <0f> 0b 31 db 45 0f b6 ac 24 c8 03 00 00 41 80 fd 01 0f 87 fd 55 19 Oct 28 12:24:11 desktop kernel: RSP: 0018:ffffb291404dfa90 EFLAGS: 00010246 Oct 28 12:24:11 desktop kernel: RAX: 0000000000000110 RBX: 0000000000000006 RCX: 0000000000000000 Oct 28 12:24:11 desktop kernel: RDX: 0000000000000000 RSI: ffff908acdcd2980 RDI: ffff908acdcc0000 Oct 28 12:24:11 desktop kernel: RBP: ffffb291404dfae0 R08: ffff908acdcc0000 R09: 0000000000000000 Oct 28 12:24:11 desktop kernel: R10: ffff908acdcd2980 R11: ffff908acdcc01f0 R12: ffff908aa3478000 Oct 28 12:24:11 desktop kernel: R13: ffff908acdcc3250 R14: 0000000000000005 R15: 0000000000000000 Oct 28 12:24:11 desktop kernel: FS: 0000000000000000(0000) GS:ffff90911ed00000(0000) knlGS:0000000000000000 Oct 28 12:24:11 desktop kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 28 12:24:11 desktop kernel: CR2: 00007f36aced3098 CR3: 00000001a3e6c000 CR4: 0000000000350ee0 Oct 28 12:24:11 desktop kernel: Call Trace: Oct 28 12:24:11 desktop kernel: <TASK> Oct 28 12:24:11 desktop kernel: ? dce_get_required_clocks_state+0x25/0x140 [amdgpu] Oct 28 12:24:11 desktop kernel: dce_update_clocks+0xdb/0x170 [amdgpu] Oct 28 12:24:11 desktop kernel: dce100_prepare_bandwidth+0x3e/0x50 [amdgpu] Oct 28 12:24:11 desktop kernel: commit_planes_for_stream+0xd54/0x1060 [amdgpu] Oct 28 12:24:11 desktop kernel: ? dc_resource_state_copy_construct+0x167/0x2b0 [amdgpu] Oct 28 12:24:11 desktop kernel: dc_commit_updates_for_stream+0x1e8/0x5b0 [amdgpu] Oct 28 12:24:11 desktop kernel: set_all_streams_dpms_off_for_link+0x159/0x190 [amdgpu] Oct 28 12:24:11 desktop kernel: ? detect_link_and_local_sink+0x5f2/0xc40 [amdgpu] Oct 28 12:24:11 desktop kernel: verify_link_capability.isra.0+0x260/0x300 [amdgpu] Oct 28 12:24:11 desktop kernel: dc_link_detect+0x35/0x1d0 [amdgpu] Oct 28 12:24:11 desktop kernel: handle_hpd_irq_helper+0x106/0x1d0 [amdgpu] Oct 28 12:24:11 desktop kernel: handle_hpd_irq+0xe/0x20 [amdgpu] Oct 28 12:24:11 desktop kernel: dm_irq_work_func+0x19/0x30 [amdgpu] Oct 28 12:24:11 desktop kernel: process_one_work+0x225/0x400 Oct 28 12:24:11 desktop kernel: worker_thread+0x50/0x3e0 Oct 28 12:24:11 desktop kernel: ? rescuer_thread+0x3c0/0x3c0 Oct 28 12:24:11 desktop kernel: kthread+0xe9/0x110 Oct 28 12:24:11 desktop kernel: ? kthread_complete_and_exit+0x20/0x20 Oct 28 12:24:11 desktop kernel: ret_from_fork+0x22/0x30 Oct 28 12:24:11 desktop kernel: </TASK> Oct 28 12:24:11 desktop kernel: ---[ end trace 0000000000000000 ]--- Oct 28 12:24:11 desktop kernel: BUG: kernel NULL pointer dereference, address: 0000000000000008 Oct 28 12:24:11 desktop kernel: #PF: supervisor read access in kernel mode Oct 28 12:24:11 desktop kernel: #PF: error_code(0x0000) - not-present page Oct 28 12:24:11 desktop kernel: PGD 1a73f3067 P4D 1a73f3067 PUD 1a73f2067 PMD 0 Oct 28 12:24:11 desktop kernel: Oops: 0000 [#1] PREEMPT SMP NOPTI Oct 28 12:24:11 desktop kernel: CPU: 12 PID: 91 Comm: kworker/12:0H Tainted: G W O 5.19.0-23.24-justin-stock-generic #stock Oct 28 12:24:11 desktop kernel: Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS PRO WIFI/X570 AORUS PRO WIFI, BIOS F21 07/31/2020 Oct 28 12:24:11 desktop kernel: Workqueue: events_highpri dm_irq_work_func [amdgpu] Oct 28 12:24:11 desktop kernel: RIP: 0010:dce110_fill_display_configs+0xa4/0x2e0 [amdgpu] Oct 28 12:24:11 desktop kernel: Code: 10 08 00 00 83 fb 06 75 da 0f 0b 31 db 45 0f b6 ac 24 c8 03 00 00 41 80 fd 01 0f 87 fd 55 19 00 41 83 e5 01 0f 85 b7 00 00 00 <48> 8b 43 08 48 8d 14 92 41 83 c1 01 49 8d 0c d2 31 d2 8b 80 c4 03 Oct 28 12:24:11 desktop kernel: RSP: 0018:ffffb291404dfa90 EFLAGS: 00010246 Oct 28 12:24:11 desktop kernel: RAX: 0000000000000110 RBX: 0000000000000000 RCX: 0000000000000000 Oct 28 12:24:11 desktop kernel: RDX: 0000000000000000 RSI: ffff908acdcd2980 RDI: ffff908acdcc0000 Oct 28 12:24:11 desktop kernel: RBP: ffffb291404dfae0 R08: ffff908acdcc0000 R09: 0000000000000000 Oct 28 12:24:11 desktop kernel: R10: ffff908acdcd2980 R11: ffff908acdcc01f0 R12: ffff908aa3478000 Oct 28 12:24:11 desktop kernel: R13: 0000000000000000 R14: 0000000000000005 R15: 0000000000000000 Oct 28 12:24:11 desktop kernel: FS: 0000000000000000(0000) GS:ffff90911ed00000(0000) knlGS:0000000000000000 Oct 28 12:24:11 desktop kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 28 12:24:11 desktop kernel: CR2: 0000000000000008 CR3: 00000001a3e6c000 CR4: 0000000000350ee0 Oct 28 12:24:11 desktop kernel: Call Trace: Oct 28 12:24:11 desktop kernel: <TASK> Oct 28 12:24:11 desktop kernel: ? dce_get_required_clocks_state+0x25/0x140 [amdgpu] Oct 28 12:24:11 desktop kernel: dce_update_clocks+0xdb/0x170 [amdgpu] Oct 28 12:24:11 desktop kernel: dce100_prepare_bandwidth+0x3e/0x50 [amdgpu] Oct 28 12:24:11 desktop kernel: commit_planes_for_stream+0xd54/0x1060 [amdgpu] Oct 28 12:24:11 desktop kernel: ? dc_resource_state_copy_construct+0x167/0x2b0 [amdgpu] Oct 28 12:24:11 desktop kernel: dc_commit_updates_for_stream+0x1e8/0x5b0 [amdgpu] Oct 28 12:24:11 desktop kernel: set_all_streams_dpms_off_for_link+0x159/0x190 [amdgpu] Oct 28 12:24:11 desktop kernel: ? detect_link_and_local_sink+0x5f2/0xc40 [amdgpu] Oct 28 12:24:11 desktop kernel: verify_link_capability.isra.0+0x260/0x300 [amdgpu] Oct 28 12:24:11 desktop kernel: dc_link_detect+0x35/0x1d0 [amdgpu] Oct 28 12:24:11 desktop kernel: handle_hpd_irq_helper+0x106/0x1d0 [amdgpu] Oct 28 12:24:11 desktop kernel: handle_hpd_irq+0xe/0x20 [amdgpu] Oct 28 12:24:11 desktop kernel: dm_irq_work_func+0x19/0x30 [amdgpu] Oct 28 12:24:11 desktop kernel: process_one_work+0x225/0x400 Oct 28 12:24:11 desktop kernel: worker_thread+0x50/0x3e0 Oct 28 12:24:11 desktop kernel: ? rescuer_thread+0x3c0/0x3c0 Oct 28 12:24:11 desktop kernel: kthread+0xe9/0x110 Oct 28 12:24:11 desktop kernel: ? kthread_complete_and_exit+0x20/0x20 Oct 28 12:24:11 desktop kernel: ret_from_fork+0x22/0x30 Oct 28 12:24:11 desktop kernel: </TASK> Oct 28 12:24:11 desktop kernel: Modules linked in: xt_multiport tls nf_conntrack_netlink xfrm_user xfrm_algo xt_addrtype br_netfilter nvme_fabrics rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp nft_compat nft_chain_nat n> Oct 28 12:24:11 desktop kernel: gigabyte_wmi rapl drm_kms_helper fb_sys_fops snd_timer syscopyarea iwlwifi(O) ccp sysfillrect snd sysimgblt k10temp soundcore cfg80211(O) iwlwifi_compat(O) mac_hid msr parport_pc ppdev lp parport drm ramoops pstore_blk reed_solomon pstore_zone efi_> Oct 28 12:24:11 desktop kernel: CR2: 0000000000000008 Oct 28 12:24:11 desktop kernel: ---[ end trace 0000000000000000 ]--- Oct 28 12:24:11 desktop kernel: RIP: 0010:dce110_fill_display_configs+0xa4/0x2e0 [amdgpu] Oct 28 12:24:11 desktop kernel: Code: 10 08 00 00 83 fb 06 75 da 0f 0b 31 db 45 0f b6 ac 24 c8 03 00 00 41 80 fd 01 0f 87 fd 55 19 00 41 83 e5 01 0f 85 b7 00 00 00 <48> 8b 43 08 48 8d 14 92 41 83 c1 01 49 8d 0c d2 31 d2 8b 80 c4 03 Oct 28 12:24:11 desktop kernel: RSP: 0018:ffffb291404dfa90 EFLAGS: 00010246 Oct 28 12:24:11 desktop kernel: RAX: 0000000000000110 RBX: 0000000000000000 RCX: 0000000000000000 Oct 28 12:24:11 desktop kernel: RDX: 0000000000000000 RSI: ffff908acdcd2980 RDI: ffff908acdcc0000 Oct 28 12:24:11 desktop kernel: RBP: ffffb291404dfae0 R08: ffff908acdcc0000 R09: 0000000000000000 Oct 28 12:24:11 desktop kernel: R10: ffff908acdcd2980 R11: ffff908acdcc01f0 R12: ffff908aa3478000 Oct 28 12:24:11 desktop kernel: R13: 0000000000000000 R14: 0000000000000005 R15: 0000000000000000 Oct 28 12:24:11 desktop kernel: FS: 0000000000000000(0000) GS:ffff90911ed00000(0000) knlGS:0000000000000000 Oct 28 12:24:11 desktop kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Oct 28 12:24:11 desktop kernel: CR2: 0000000000000008 CR3: 00000001a3e6c000 CR4: 0000000000350ee0 The issue also exists in upstream kernels (https://github.com/torvalds/linux.git) 5.18 and 5.19, but is fixed in 6.0. I used `git bisect` to determine that the commit that causes me to experience the failure is c282d9512cdd (it's certainly possible that the bug already existed and this commit just exposed it). I also used `bisect` to determine that the issue is fixed in 15c735e7990f. I applied that patch to the latest Ubuntu kernel (I'm a little unsure on the process, but I cloned from https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/kinetic and applied the patch on top of tag Ubuntu-5.19.0-23.24), and the problem is fixed. The patch didn't apply cleanly, but it's easy enough to manually patch the hunks necessary. I was hoping the kernel team might backport the patch. Thanks! ProblemType: Bug DistroRelease: Ubuntu 22.10 Package: linux-image-5.19.0-23-generic 5.19.0-23.24 ProcVersionSignature: Ubuntu 5.19.0-23.24-generic 5.19.7 Uname: Linux 5.19.0-23-generic x86_64 ApportVersion: 2.23.1-0ubuntu3 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: unknown CurrentDesktop: GNOME Date: Fri Oct 28 16:39:39 2022 InstallationDate: Installed on 2019-08-30 (1155 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: Gigabyte Technology Co., Ltd. X570 AORUS PRO WIFI ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.19.0-23-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-5.19.0-23-generic N/A linux-backports-modules-5.19.0-23-generic N/A linux-firmware 20220923.gitf09bebf3-0ubuntu1 SourcePackage: linux UpgradeStatus: Upgraded to kinetic on 2022-10-22 (6 days ago) dmi.bios.date: 07/31/2020 dmi.bios.release: 5.17 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F21 dmi.board.asset.tag: Default string dmi.board.name: X570 AORUS PRO WIFI dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF21:bd07/31/2020:br5.17:svnGigabyteTechnologyCo.,Ltd.:pnX570AORUSPROWIFI:pvr-CF:rvnGigabyteTechnologyCo.,Ltd.:rnX570AORUSPROWIFI:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring: dmi.product.family: X570 MB dmi.product.name: X570 AORUS PRO WIFI dmi.product.sku: Default string dmi.product.version: -CF dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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