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a9cd4636-c766-4944-fad0-08deee0fc866 X-MS-Exchange-CrossTenant-AuthSource: PH0PR11MB5832.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jul 2026 07:54:28.9851 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 9pKCH66u7gjAOqctoSGAMYSRHUrjmxI/5PUITVcKolTtW3csEBHvS0IcjkwTxfb7UEdeCAcS9aFKG7b2WvPRBA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: EAYPR11MB9564 X-OriginatorOrg: intel.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hello, kernel test robot noticed "RIP:drm_mode_config_validate[drm]" on: commit: 860e748bddcc9291cbdd23e801640aeeba30cc44 ("drm: ensure blend mode s= upported if pixel format with alpha exposed") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master b4515cf4156356e8f4fe6e0fdc17f59adab9772f] in testcase: igt version: igt-x86_64-6d3784ab5-1_20260718 with following parameters: group: group-11 config: x86_64-rhel-9.4-func compiler: gcc-14 test machine: 10 threads 1 sockets Intel(R) Core Ultra Series 3 @ 3.20GHz (= Panther Lake) with 32G memory (please refer to attached dmesg/kmsg for entire log/backtrace) If you fix the issue in a separate patch/commit (i.e. not just a new versio= n of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202607300914.d028cee3-lkp@intel.co= m kern :info : [ 115.169208] [ T1505] ------------[ cut here ]----------= -- kern :warn : [ 115.169247] [ T1505] [PLANE:35:plane-0] pixel format wi= th alpha exposed but blend mode not setup kern :warn : [ 115.169251] [ T1505] WARNING: drivers/gpu/drm/drm_mode_= config.c:872 at drm_mode_config_validate+0x9b7/0x12f0 [drm], CPU#3: vkms_co= nfigfs/1505 kern :warn : [ 115.169350] [ T1505] Modules linked in: vkms(+) drm_shm= em_helper vmwgfx i915 intel_gtt amdgpu drm_buddy amdxcp drm_panel_backlight= _quirks gpu_sched drm_ttm_helper ttm drm_exec drm_suballoc_helper drm_displ= ay_helper cec drm_client_lib drm_kms_helper btrfs libblake2b raid6_pq zstd_= compress xor binfmt_misc snd_hda_intel snd_sof_pci_intel_ptl snd_sof_pci_in= tel_lnl snd_sof_pci_intel_mtl snd_sof_intel_hda_generic soundwire_intel snd= _sof_intel_hda_sdw_bpt snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_in= tel_hda_mlink snd_sof_intel_hda soundwire_cadence snd_sof_pci snd_sof_xtens= a_dsp snd_soc_sdw_utils snd_sof intel_rapl_msr intel_uncore_frequency intel= _uncore_frequency_common snd_sof_utils x86_pkg_temp_thermal snd_hda_ext_cor= e intel_powerclamp snd_hda_codec coretemp snd_hda_core snd_intel_dspcfg snd= _intel_sdw_acpi kvm_intel snd_soc_acpi_intel_match snd_soc_acpi_intel_sdca_= quirks soundwire_generic_allocation snd_soc_acpi snd_hwdep crc8 soundwire_b= us kvm snd_soc_sdca snd_soc_core irqbypass spi_nor snd_compress mtd kern :warn : [ 115.169438] [ T1505] i2c_designware_platform i2c_desig= nware_core wmi_bmof snd_pcm intel_cstate mei_gsc_proxy pl2303 intel_th_gth = intel_uncore snd_timer pcspkr i2c_i801 intel_th_pci snd spi_intel_pci proce= ssor_thermal_device_pci video intel_th i2c_smbus spi_intel soundcore proces= sor_thermal_device intel_pmc_core processor_thermal_wt_hint platform_temper= ature_control processor_thermal_soc_slider int3403_thermal processor_therma= l_rfim processor_thermal_rapl pmt_telemetry intel_rapl_common pmt_discovery= intel_hid processor_thermal_wt_req pmt_class int3400_thermal intel_lpss_pc= i processor_thermal_power_floor acpi_tad wmi acpi_thermal_rel sparse_keymap= acpi_pad intel_pmc_ssram_telemetry thunderbolt mei_me processor_thermal_mb= ox intel_pmc_pwrm_telemetry intel_lpss mei idma64 int340x_thermal_zone igen= 6_edac intel_vsec drm fuse kern :warn : [ 115.169555] [ T1505] CPU: 3 UID: 0 PID: 1505 Comm: vkms= _configfs Not tainted 7.2.0-rc2+ #1 PREEMPT(lazy) kern :warn : [ 115.169566] [ T1505] Hardware name: Intel Corporation P= anther Lake Client Platform/PTL-UH LP5 T3 RVP1, BIOS PTLPFWI1.R00.3383.D10.= 2510222219 10/22/2025 kern :warn : [ 115.169574] [ T1505] RIP: 0010:drm_mode_config_validate= (gpu/drm/drm_mode_config.c:872 (discriminator 1) gpu/drm/drm_mode_config.c= :938 (discriminator 1)) drm kern :warn : [ 115.169628] [ T1505] Code: 8d 7d 50 49 8b 55 18 48 89 f= 8 48 c1 e8 03 42 0f b6 04 38 84 c0 74 08 3c 03 0f 8e 1c 07 00 00 48 8d 3d 4= 9 38 d7 ff 41 8b 75 50 <67> 48 0f b9 3a e9 5e fe ff ff 49 8d bc 24 b8 02 00= 00 48 b8 00 00 All code =3D=3D=3D=3D=3D=3D=3D=3D 0: 8d 7d 50 lea 0x50(%rbp),%edi 3: 49 8b 55 18 mov 0x18(%r13),%rdx 7: 48 89 f8 mov %rdi,%rax a: 48 c1 e8 03 shr $0x3,%rax e: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax 13: 84 c0 test %al,%al 15: 74 08 je 0x1f 17: 3c 03 cmp $0x3,%al 19: 0f 8e 1c 07 00 00 jle 0x73b 1f: 48 8d 3d 49 38 d7 ff lea -0x28c7b7(%rip),%rdi # 0xffffffff= ffd7386f 26: 41 8b 75 50 mov 0x50(%r13),%esi 2a:* 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 5e fe ff ff jmp 0xfffffffffffffe92 34: 49 8d bc 24 b8 02 00 lea 0x2b8(%r12),%rdi 3b: 00=20 3c: 48 rex.W 3d: b8 .byte 0xb8 ... Code starting with the faulting instruction =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 0: 67 48 0f b9 3a ud1 (%edx),%rdi 5: e9 5e fe ff ff jmp 0xfffffffffffffe68 a: 49 8d bc 24 b8 02 00 lea 0x2b8(%r12),%rdi 11: 00=20 12: 48 rex.W 13: b8 .byte 0xb8 ... kern :warn : [ 115.169639] [ T1505] RSP: 0018:ffffc90006047608 EFLAGS:= 00010246 kern :warn : [ 115.169648] [ T1505] RAX: 0000000000000000 RBX: ffffed1= 035930c14 RCX: 0000000000000001 kern :warn : [ 115.169655] [ T1505] RDX: ffff88819f72f4e0 RSI: 0000000= 000000023 RDI: ffffffffc025ead0 kern :warn : [ 115.169662] [ T1505] RBP: ffffed1035930c15 R08: 0000000= 000000001 R09: 0000000000000004 kern :warn : [ 115.169668] [ T1505] R10: ffff88820ae8c278 R11: 0000000= 000000001 R12: ffff88820ae8c000 kern :warn : [ 115.169675] [ T1505] R13: ffff8881ac986028 R14: 0000000= 000000000 R15: dffffc0000000000 kern :warn : [ 115.169681] [ T1505] FS: 00007f9d6f97dc00(0000) GS:fff= f8887ae227000(0000) knlGS:0000000000000000 kern :warn : [ 115.169689] [ T1505] CS: 0010 DS: 0000 ES: 0000 CR0: 0= 000000080050033 kern :warn : [ 115.169695] [ T1505] CR2: 00007ffc2d4d5c68 CR3: 0000000= 14675a006 CR4: 0000000108f72ef0 kern :warn : [ 115.169702] [ T1505] PKRU: 55555554 kern :warn : [ 115.169707] [ T1505] Call Trace: kern :warn : [ 115.169712] [ T1505] kern :warn : [ 115.169719] [ T1505] drm_dev_register (gpu/drm/drm_drv.= c:1067) drm kern :warn : [ 115.169783] [ T1505] vkms_create (gpu/drm/vkms/vkms_drv= .c:208) vkms kern :warn : [ 115.169866] [ T1505] vkms_init (gpu/drm/vkms/vkms_drv.c= :74) vkms kern :warn : [ 115.169879] [ T1505] ? __pfx_init_module (vkms.mod.c:?= ) vkms kern :warn : [ 115.169892] [ T1505] do_one_initcall (main.c:1347) kern :warn : [ 115.169902] [ T1505] ? __pfx_do_one_initcall (trace/ev= ents/initcall.h:10) kern :warn : [ 115.169910] [ T1505] ? kasan_save_track (kasan/common.= c:78) kern :warn : [ 115.169918] [ T1505] ? __kasan_kmalloc (kasan/common.c= :398 kasan/common.c:415) kern :warn : [ 115.169925] [ T1505] ? __kmalloc_cache_noprof (linux/k= asan.h:263 slub.c:5515) kern :warn : [ 115.169933] [ T1505] ? do_init_module (linux/slab.h:96= 9 module/main.c:3094) kern :warn : [ 115.169941] [ T1505] ? kasan_unpoison (kasan/shadow.c:= 146 kasan/shadow.c:178) kern :warn : [ 115.169949] [ T1505] do_init_module (module/main.c:310= 6) kern :warn : [ 115.169957] [ T1505] ? __pfx_do_init_module (linux/lis= t.h:226) kern :warn : [ 115.169965] [ T1505] ? kfree (linux/kasan.h:235 slub.c= :2705 slub.c:6405 slub.c:6720) kern :warn : [ 115.169972] [ T1505] ? klp_module_coming (livepatch/co= re.c:1321) kern :warn : [ 115.169980] [ T1505] load_module (module/main.c:3580) kern :warn : [ 115.169988] [ T1505] ? kernel_read_file (linux/instrum= ented.h:112 linux/atomic/atomic-instrumented.h:435 linux/fs.h:2824 kernel_r= ead_file.c:122) kern :warn : [ 115.169995] [ T1505] ? __pfx_load_module (module/main.= c:3014) kern :warn : [ 115.170002] [ T1505] ? kasan_save_track (kasan/common.= c:78) kern :warn : [ 115.170010] [ T1505] init_module_from_file (module/mai= n.c:3777) kern :warn : [ 115.170016] [ T1505] ? __pfx_init_module_from_file (mo= dule/main.c:3634) kern :warn : [ 115.170022] [ T1505] ? __pfx___fsnotify_parent (notify= /fsnotify.c:389 (discriminator 2)) kern :warn : [ 115.170030] [ T1505] ? do_sys_openat2 (linux/fs.h:2559= linux/fs.h:2561 open.c:1367) kern :warn : [ 115.170037] [ T1505] ? _raw_spin_lock (linux/instrumen= ted.h:55 linux/atomic/atomic-instrumented.h:1301 asm-generic/qspinlock.h:11= 1 linux/spinlock.h:187 linux/spinlock_api_smp.h:159 locking/spinlock.c:158) kern :warn : [ 115.170045] [ T1505] ? __pfx__raw_spin_lock (locking/s= pinlock.c:331) kern :warn : [ 115.170053] [ T1505] idempotent_init_module (module/ma= in.c:3789) kern :warn : [ 115.170059] [ T1505] ? __pfx_idempotent_init_module (m= odule/main.c:3778) kern :warn : [ 115.170066] [ T1505] ? fdget (linux/instrumented.h:82 = linux/atomic/atomic-instrumented.h:49 file.c:1194 file.c:1208) kern :warn : [ 115.170073] [ T1505] ? security_capable (security.c:66= 0 (discriminator 8)) kern :warn : [ 115.170081] [ T1505] __x64_sys_finit_module (module/ma= in.c:3815 module/main.c:3799 module/main.c:3799) kern :warn : [ 115.170087] [ T1505] ? __x64_sys_pread64 (read_write.c= :764 read_write.c:772 read_write.c:769 read_write.c:769) kern :warn : [ 115.170095] [ T1505] do_syscall_64 (x86/entry/syscall_= 64.c:63 x86/entry/syscall_64.c:94) kern :warn : [ 115.170103] [ T1505] ? do_syscall_64 (linux/irq-entry-= common.h:210 linux/irq-entry-common.h:230 linux/entry-common.h:318 x86/entr= y/syscall_64.c:100) kern :warn : [ 115.170110] [ T1505] ? ksys_read (read_write.c:716) kern :warn : [ 115.170117] [ T1505] ? __pfx_ksys_read (read_write.c:7= 99) kern :warn : [ 115.170125] [ T1505] ? do_syscall_64 (linux/irq-entry-= common.h:210 linux/irq-entry-common.h:230 linux/entry-common.h:318 x86/entr= y/syscall_64.c:100) kern :warn : [ 115.170132] [ T1505] ? do_syscall_64 (linux/irq-entry-= common.h:210 linux/irq-entry-common.h:230 linux/entry-common.h:318 x86/entr= y/syscall_64.c:100) kern :warn : [ 115.170139] [ T1505] ? __x64_sys_openat (open.c:1374 o= pen.c:1390 open.c:1385 open.c:1385) kern :warn : [ 115.170146] [ T1505] ? __pfx___x64_sys_openat (open.c:= 1378) kern :warn : [ 115.170153] [ T1505] ? __pfx_ksys_read (read_write.c:7= 99) kern :warn : [ 115.170160] [ T1505] ? do_syscall_64 (linux/irq-entry-= common.h:210 linux/irq-entry-common.h:230 linux/entry-common.h:318 x86/entr= y/syscall_64.c:100) kern :warn : [ 115.170167] [ T1505] ? do_syscall_64 (linux/irq-entry-= common.h:210 linux/irq-entry-common.h:230 linux/entry-common.h:318 x86/entr= y/syscall_64.c:100) kern :warn : [ 115.170174] [ T1505] ? do_syscall_64 (linux/randomize_= kstack.h:57 x86/entry/syscall_64.c:92) kern :warn : [ 115.170181] [ T1505] asm_fred_entrypoint_user (x86/ent= ry/entry_64_fred.S:39) kern :warn : [ 115.170188] [ T1505] RIP: 0033:0x7f9d71cd37b9 kern :warn : [ 115.170196] [ T1505] Code: ff c3 66 2e 0f 1f 84 00 00 0= 0 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c= 8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 27 66 0d 00 f7= d8 64 89 01 48 All code =3D=3D=3D=3D=3D=3D=3D=3D 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 9: 00 00 00=20 c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping = instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 8b 0d 27 66 0d 00 mov 0xd6627(%rip),%rcx # 0xd6661 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W Code starting with the faulting instruction =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 73 01 jae 0x9 8: c3 ret 9: 48 8b 0d 27 66 0d 00 mov 0xd6627(%rip),%rcx # 0xd6637 10: f7 d8 neg %eax 12: 64 89 01 mov %eax,%fs:(%rcx) 15: 48 rex.W The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260730/202607300914.d028cee3-lkp@= intel.com --=20 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki