From 27bf9cf549af47977e07d1b9d9d930ce26a5113a Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 3 Feb 2026 16:59:25 +0100 Subject: [PATCH] 6.12-stable patches added patches: revert-drm-nouveau-disp-set-drm_mode_config_funcs.atomic_-check-commit.patch --- ...de_config_funcs.atomic_-check-commit.patch | 54 +++++++++++++++++++ queue-6.12/series | 1 + 2 files changed, 55 insertions(+) create mode 100644 queue-6.12/revert-drm-nouveau-disp-set-drm_mode_config_funcs.atomic_-check-commit.patch diff --git a/queue-6.12/revert-drm-nouveau-disp-set-drm_mode_config_funcs.atomic_-check-commit.patch b/queue-6.12/revert-drm-nouveau-disp-set-drm_mode_config_funcs.atomic_-check-commit.patch new file mode 100644 index 0000000000..345aa12aea --- /dev/null +++ b/queue-6.12/revert-drm-nouveau-disp-set-drm_mode_config_funcs.atomic_-check-commit.patch @@ -0,0 +1,54 @@ +From 6c65db809796717f0a96cf22f80405dbc1a31a4b Mon Sep 17 00:00:00 2001 +From: John Ogness +Date: Fri, 30 Jan 2026 12:38:08 +0106 +Subject: Revert "drm/nouveau/disp: Set drm_mode_config_funcs.atomic_(check|commit)" + +From: John Ogness + +commit 6c65db809796717f0a96cf22f80405dbc1a31a4b upstream. + +This reverts commit 604826acb3f53c6648a7ee99a3914ead680ab7fb. + +Apparently there is more to supporting atomic modesetting than +providing atomic_(check|commit) callbacks. Before this revert: + +WARNING: [] drivers/gpu/drm/drm_plane.c:389 at .__drm_universal_plane_init+0x13c/0x794 [drm], CPU#1: modprobe/1790 +BUG: Kernel NULL pointer dereference on read at 0x00000000 +.drm_atomic_get_plane_state+0xd4/0x210 [drm] (unreliable) +.drm_client_modeset_commit_atomic+0xf8/0x338 [drm] +.drm_client_modeset_commit_locked+0x80/0x260 [drm] +.drm_client_modeset_commit+0x40/0x7c [drm] +.__drm_fb_helper_restore_fbdev_mode_unlocked.part.0+0xfc/0x108 [drm_kms_helper] +.drm_fb_helper_set_par+0x8c/0xb8 [drm_kms_helper] +.fbcon_init+0x31c/0x618 +[...] +.__drm_fb_helper_initial_config_and_unlock+0x474/0x7f4 [drm_kms_helper] +.drm_fbdev_client_hotplug+0xb0/0x120 [drm_client_lib] +.drm_client_register+0x88/0xe4 [drm] +.drm_fbdev_client_setup+0x12c/0x19b4 [drm_client_lib] +.drm_client_setup+0x15c/0x18c [drm_client_lib] +.nouveau_drm_probe+0x19c/0x268 [nouveau] + +Fixes: 604826acb3f5 ("drm/nouveau/disp: Set drm_mode_config_funcs.atomic_(check|commit)") +Reported-by: John Ogness +Closes: https://lore.kernel.org/lkml/87ldhf1prw.fsf@jogness.linutronix.de +Signed-off-by: John Ogness +Tested-by: Daniel Palmer +Link: https://patch.msgid.link/20260130113230.2311221-1-john.ogness@linutronix.de +Signed-off-by: Danilo Krummrich +Signed-off-by: Greg Kroah-Hartman +--- + drivers/gpu/drm/nouveau/nouveau_display.c | 2 -- + 1 file changed, 2 deletions(-) + +--- a/drivers/gpu/drm/nouveau/nouveau_display.c ++++ b/drivers/gpu/drm/nouveau/nouveau_display.c +@@ -391,8 +391,6 @@ nouveau_user_framebuffer_create(struct d + + static const struct drm_mode_config_funcs nouveau_mode_config_funcs = { + .fb_create = nouveau_user_framebuffer_create, +- .atomic_commit = drm_atomic_helper_commit, +- .atomic_check = drm_atomic_helper_check, + }; + + diff --git a/queue-6.12/series b/queue-6.12/series index 19979d86b2..23c1fc69c3 100644 --- a/queue-6.12/series +++ b/queue-6.12/series @@ -72,3 +72,4 @@ ksmbd-smbd-fix-dma_unmap_sg-nents.patch libbpf-fix-wdiscarded-qualifiers-under-c23.patch mm-kfence-randomize-the-freelist-on-initialization.patch wifi-ath11k-add-srng-lock-for-ath11k_hal_srng_-in-monitor-mode.patch +revert-drm-nouveau-disp-set-drm_mode_config_funcs.atomic_-check-commit.patch -- 2.47.3