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Message-ID: <CADYdroPQyiBfZ=wP6Cn6ivh72JGyFzV=RebkZ-XWMPU-O0D3-Q@mail.gmail.com> Date: Tue, 9 Dec 2025 14:26:29 +0100 From: Norbert Lange <nolange79@...il.com> To: Jani Nikula <jani.nikula@...ux.intel.com>, Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>, Tvrtko Ursulin <tursulin@...ulin.net>, David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>, "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: PROBLEM: i915 leaks DP connector with static kernel Hello, I am building upstream 6.18 as static kernel, and booting a initramfs with the needed firmware. The relevant files are attached, BUG occurs as soon as the i915 module is initialized, the attached Monitor just stays blank. Errors start with: [ 0.320330] i915 0000:00:02.0: [drm] Found broxton (device ID 5a85) integrated display version 9.00 stepping E0 [ 0.326984] i915 0000:00:02.0: [drm] CI tainted: 0x9 by intel_gt_init (drivers/gpu/drm/i915/gt/intel_gt.c:766) [ 0.799141] Freeing initrd memory: 28320K [ 0.799636] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/bxt_dmc_ver1_07.bin (v1.7) [ 0.799782] ------------[ cut here ]------------ [ 0.799788] WARNING: CPU: 2 PID: 1 at drivers/gpu/drm/drm_mode_config.c:537 drm_mode_config_cleanup (drivers/gpu/drm/drm_mode_config.c:537 (discriminator 1)) [ 0.799806] CPU: 2 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W 6.18.0-static #1 PREEMPT(none) [ 0.799815] Tainted: [W]=WARN [ 0.799819] Hardware name: TQ-Group TQMxE39M/cgb-800--.00, BIOS 5.12.30.28.22 09/30/2019 [ 0.799823] RIP: 0010:drm_mode_config_cleanup (drivers/gpu/drm/drm_mode_config.c:537 (discriminator 1)) [ 0.799832] Code: 00 eb e8 48 89 ef e8 16 c4 fe ff 48 8d bb 70 02 00 00 e8 ca 14 b5 ff 48 8b 93 58 02 00 00 48 8d 83 58 02 00 00 48 39 c2 74 34 <0f> 0b 48 89 ee 48 89 df e8 7a ac fe ff 48 89 ef e8 42 c4 fe ff 48 All code ======== 0: 00 eb add %ch,%bl 2: e8 48 89 ef e8 call 0xffffffffe8ef894f 7: 16 (bad) 8: c4 (bad) 9: fe (bad) a: ff 48 8d decl -0x73(%rax) d: bb 70 02 00 00 mov $0x270,%ebx 12: e8 ca 14 b5 ff call 0xffffffffffb514e1 17: 48 8b 93 58 02 00 00 mov 0x258(%rbx),%rdx 1e: 48 8d 83 58 02 00 00 lea 0x258(%rbx),%rax 25: 48 39 c2 cmp %rax,%rdx 28: 74 34 je 0x5e 2a:* 0f 0b ud2 <-- trapping instruction 2c: 48 89 ee mov %rbp,%rsi 2f: 48 89 df mov %rbx,%rdi 32: e8 7a ac fe ff call 0xfffffffffffeacb1 37: 48 89 ef mov %rbp,%rdi 3a: e8 42 c4 fe ff call 0xfffffffffffec481 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 48 89 ee mov %rbp,%rsi 5: 48 89 df mov %rbx,%rdi 8: e8 7a ac fe ff call 0xfffffffffffeac87 d: 48 89 ef mov %rbp,%rdi 10: e8 42 c4 fe ff call 0xfffffffffffec457 15: 48 rex.W [ 0.799838] RSP: 0000:ffffc9000004fc38 EFLAGS: 00010293 [ 0.799845] RAX: ffff888101a68258 RBX: ffff888101a68000 RCX: 0000000000000002 [ 0.799850] RDX: ffff8881003de020 RSI: ffffc9000004fb60 RDI: ffffc9000004fbe0 [ 0.799855] RBP: ffffc9000004fc38 R08: 0000000000000000 R09: 0000000000000000 [ 0.799859] R10: 8080808080808080 R11: fefefefefefefeff R12: ffff888101a68290 [ 0.799864] R13: ffff888101a68298 R14: ffff888100a420c0 R15: ffff888101a68000 [ 0.799869] FS: 0000000000000000(0000) GS:ffff8881f939f000(0000) knlGS:0000000000000000 [ 0.799875] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.799880] CR2: 0000000000000000 CR3: 0000000002218000 CR4: 00000000003506b0 [ 0.799884] Call Trace: [ 0.799891] <TASK> [ 0.799895] ? kfree (mm/slub.c:6584 mm/slub.c:6651 mm/slub.c:6849) [ 0.799904] ? intel_atomic_global_obj_cleanup (drivers/gpu/drm/i915/display/intel_global_state.c:131 (discriminator 2)) [ 0.799914] intel_display_driver_remove_noirq (drivers/gpu/drm/i915/display/intel_display_driver.c:642) [ 0.799924] i915_driver_probe (drivers/gpu/drm/i915/i915_driver.c:871) [ 0.799934] ? pci_match_id (drivers/pci/pci-driver.c:110 (discriminator 1)) [ 0.799943] ? __pfx___driver_attach (drivers/base/dd.c:1158) [ 0.799951] pci_device_probe (drivers/pci/pci-driver.c:324 drivers/pci/pci-driver.c:392 drivers/pci/pci-driver.c:417 drivers/pci/pci-driver.c:451) [ 0.799960] really_probe (drivers/base/dd.c:581 drivers/base/dd.c:659) [ 0.799967] driver_probe_device (drivers/base/dd.c:831) [ 0.799973] __driver_attach (drivers/base/dd.c:1218 drivers/base/dd.c:1157) [ 0.799980] bus_for_each_dev (drivers/base/bus.c:369) [ 0.799990] bus_add_driver (drivers/base/bus.c:678) [ 0.799999] driver_register (drivers/base/driver.c:249) [ 0.800006] i915_init (drivers/gpu/drm/i915/i915_module.c:86) [ 0.800016] ? __pfx_i915_init (drivers/gpu/drm/i915/i915_module.c:82) [ 0.800024] do_one_initcall (init/main.c:1283) [ 0.800032] kernel_init_freeable (init/main.c:1344 (discriminator 3) init/main.c:1361 (discriminator 3) init/main.c:1380 (discriminator 3) init/main.c:1593 (discriminator 3)) [ 0.800040] ? __pfx_kernel_init (init/main.c:1475) [ 0.800049] kernel_init (init/main.c:1485) [ 0.800057] ret_from_fork (arch/x86/kernel/process.c:164) [ 0.800065] ? __pfx_kernel_init (init/main.c:1475) [ 0.800073] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) [ 0.800081] </TASK> [ 0.800085] ---[ end trace 0000000000000000 ]--- [ 0.800090] [drm:drm_mode_config_cleanup] *ERROR* connector DP-1 leaked! [ 0.805570] ------------[ cut here ]------------ [ 0.805574] i915 0000:00:02.0: [drm] drm_WARN_ON(plane_state->ggtt_vma) Content of type "text/html" skipped View attachment "dmesg.txt" of type "text/plain" (75975 bytes) Download attachment "defconfig" of type "application/octet-stream" (8117 bytes) View attachment "lspci.txt" of type "text/plain" (36501 bytes)
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