------------[ cut here ]------------
WARNING: CPU: 1 PID: 46 at drivers/gpu/drm/drm_atomic_helper.c:1682 drm_atomic_helper_wait_for_vblanks.part.0+0x264/0x26c drivers/gpu/drm/drm_atomic_helper.c:1682
[CRTC:34:crtc-0] vblank wait timed out
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 46 Comm: kworker/1:1 Not tainted 6.12.0-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: events output_poll_execute
Call trace: 
[<8199d478>] (dump_backtrace) from [<8199d574>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f44 r5:00000000 r4:8203df48
[<8199d55c>] (show_stack) from [<819bba40>] (__dump_stack lib/dump_stack.c:94 [inline])
[<8199d55c>] (show_stack) from [<819bba40>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819bb9ec>] (dump_stack_lvl) from [<819bba80>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82870d18
[<819bba68>] (dump_stack) from [<8199e0a0>] (panic+0x120/0x374 kernel/panic.c:354)
[<8199df80>] (panic) from [<802420d8>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<8199df80>] (panic) from [<802420d8>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:82026320 r0:8202dd88
 r7:80a5eca0
[<80242064>] (check_panic_on_warn) from [<8024223c>] (__warn+0x80/0x188 kernel/panic.c:748)
[<802421bc>] (__warn) from [<8024252c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:783)
 r8:00000009 r7:820b189c r6:df91dbdc r5:82eb6000 r4:00000000
[<80242348>] (warn_slowpath_fmt) from [<80a5eca0>] (drm_atomic_helper_wait_for_vblanks.part.0+0x264/0x26c drivers/gpu/drm/drm_atomic_helper.c:1682)
 r10:00000000 r9:00000001 r8:00000001 r7:00000000 r6:841c09c0 r5:83d62050
 r4:00000000
[<80a5ea3c>] (drm_atomic_helper_wait_for_vblanks.part.0) from [<80a600ec>] (drm_atomic_helper_wait_for_vblanks drivers/gpu/drm/drm_atomic_helper.c:1658 [inline])
[<80a5ea3c>] (drm_atomic_helper_wait_for_vblanks.part.0) from [<80a600ec>] (drm_atomic_helper_commit_tail+0x84/0x94 drivers/gpu/drm/drm_atomic_helper.c:1758)
 r10:841bc75c r9:00000000 r8:00000000 r7:00000001 r6:bca0eb50 r5:8408d400
 r4:841c09c0
[<80a60068>] (drm_atomic_helper_commit_tail) from [<80a616f0>] (commit_tail+0x178/0x1a0 drivers/gpu/drm/drm_atomic_helper.c:1835)
 r5:00000000 r4:841c09c0
[<80a61578>] (commit_tail) from [<80a61880>] (drm_atomic_helper_commit+0x150/0x174 drivers/gpu/drm/drm_atomic_helper.c:2073)
 r9:00000000 r8:841c09ec r7:00000000 r6:8408d400 r5:00000000 r4:841c09c0
[<80a61730>] (drm_atomic_helper_commit) from [<80a1b864>] (drm_atomic_commit+0xc4/0xf8 drivers/gpu/drm/drm_atomic.c:1516)
 r9:00000000 r8:83d62520 r7:00000001 r6:00000001 r5:8408d400 r4:841c09c0
[<80a1b7a0>] (drm_atomic_commit) from [<80a220e8>] (drm_client_modeset_commit_atomic+0x21c/0x25c drivers/gpu/drm/drm_client_modeset.c:1068)
 r5:8408d5ac r4:841c09c0
[<80a21ecc>] (drm_client_modeset_commit_atomic) from [<80a22200>] (drm_client_modeset_commit_locked+0x64/0x18c drivers/gpu/drm/drm_client_modeset.c:1171)
 r10:8408d5ec r9:00000000 r8:8408d498 r7:83f6e618 r6:83f6e600 r5:8408d400
 r4:8408d400
[<80a2219c>] (drm_client_modeset_commit_locked) from [<80a22354>] (drm_client_modeset_commit+0x2c/0x48 drivers/gpu/drm/drm_client_modeset.c:1197)
 r9:00000000 r8:8408d498 r7:820aad9c r6:83f6e6b8 r5:8408d400 r4:83f6e600
[<80a22328>] (drm_client_modeset_commit) from [<80a6dc24>] (__drm_fb_helper_restore_fbdev_mode_unlocked drivers/gpu/drm/drm_fb_helper.c:237 [inline])
[<80a22328>] (drm_client_modeset_commit) from [<80a6dc24>] (__drm_fb_helper_restore_fbdev_mode_unlocked+0x8c/0xc4 drivers/gpu/drm/drm_fb_helper.c:216)
 r5:83f6e600 r4:00000000
[<80a6db98>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from [<80a6db88>] (drm_fb_helper_set_par drivers/gpu/drm/drm_fb_helper.c:1345 [inline])
[<80a6db98>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from [<80a6db88>] (drm_fb_helper_hotplug_event+0xf8/0x108 drivers/gpu/drm/drm_fb_helper.c:1988)
 r7:820aad9c r6:8408d4ac r5:83f6e6b8 r4:83f6e600
[<80a6da90>] (drm_fb_helper_hotplug_event) from [<80a57888>] (drm_fbdev_dma_client_hotplug+0x24/0xc8 drivers/gpu/drm/drm_fbdev_dma.c:270)
 r5:8408d400 r4:83f6e600
[<80a57864>] (drm_fbdev_dma_client_hotplug) from [<80a21678>] (drm_client_dev_hotplug drivers/gpu/drm/drm_client.c:238 [inline])
[<80a57864>] (drm_fbdev_dma_client_hotplug) from [<80a21678>] (drm_client_dev_hotplug+0xbc/0x114 drivers/gpu/drm/drm_client.c:217)
 r7:820aad9c r6:8408d4ac r5:8408d400 r4:83f6e600
[<80a215bc>] (drm_client_dev_hotplug) from [<80a68ac8>] (drm_kms_helper_hotplug_event drivers/gpu/drm/drm_probe_helper.c:734 [inline])
[<80a215bc>] (drm_client_dev_hotplug) from [<80a68ac8>] (output_poll_execute+0x2ac/0x2c8 drivers/gpu/drm/drm_probe_helper.c:846)
 r9:00000000 r8:8408d4d8 r7:00000001 r6:8408d400 r5:00000001 r4:82ef1d80
[<80a6881c>] (output_poll_execute) from [<802660a0>] (process_one_work+0x1b4/0x4f4 kernel/workqueue.c:3229)
 r10:82c18205 r9:82eb6000 r8:01800000 r7:ddde40c0 r6:82c18200 r5:8408d5ec
 r4:82ef1d80
[<80265eec>] (process_one_work) from [<80266c84>] (process_scheduled_works kernel/workqueue.c:3310 [inline])
[<80265eec>] (process_one_work) from [<80266c84>] (worker_thread+0x1ec/0x3bc kernel/workqueue.c:3391)
 r10:82eb6000 r9:82ef1dac r8:61c88647 r7:ddde40e0 r6:82604d40 r5:ddde40c0
 r4:82ef1d80
[<80266a98>] (worker_thread) from [<8026fd00>] (kthread+0x104/0x134 kernel/kthread.c:389)
 r10:00000000 r9:df87de78 r8:82ef65c0 r7:82ef1d80 r6:80266a98 r5:82eb6000
 r4:82ef6500
[<8026fbfc>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdf91dfb0 to 0xdf91dff8)
dfa0:                                     00000000 00000000 00000000 00000000
dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026fbfc r4:82ef6500
Rebooting in 86400 seconds..