------------[ cut here ]------------
!set->fb
WARNING: drivers/gpu/drm/drm_atomic.c:2031 at __drm_atomic_helper_set_config+0xa45/0xee0 drivers/gpu/drm/drm_atomic.c:2031, CPU#1: syz.3.207/6651
Modules linked in:
CPU: 1 UID: 0 PID: 6651 Comm: syz.3.207 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:__drm_atomic_helper_set_config+0xa45/0xee0 drivers/gpu/drm/drm_atomic.c:2031
Code: 84 c0 74 09 3c 03 7f 05 e8 28 6e b4 fc 45 89 75 38 e9 0e fb ff ff e8 6a 5b 41 fc 90 0f 0b 90 e9 9f f7 ff ff e8 5c 5b 41 fc 90 <0f> 0b 90 e9 47 f7 ff ff 8b 6c 24 28 e8 4a 5b 41 fc 49 8d 7c 24 08
RSP: 0000:ffffc90006a27970 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88807f269080 RCX: 0000000000000000
RDX: ffff88802e78a580 RSI: ffffffff85ca8bd4 RDI: ffff88802e78a580
RBP: ffff888073eccd00 R08: 0000000000000007 R09: fffffffffffff000
R10: ffff8880583ee400 R11: 0000000000000000 R12: ffff888035fa0000
R13: ffff8880583ee400 R14: ffff8880583ee000 R15: ffff8880792d1328
FS:  0000555590b0e500(0000) GS:ffff888123c64000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3e7342 CR3: 00000000749a2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 drm_client_modeset_commit_atomic+0x53d/0x7e0 drivers/gpu/drm/drm_client_modeset.c:1085
 drm_client_modeset_commit_locked+0x14d/0x580 drivers/gpu/drm/drm_client_modeset.c:1207
 drm_client_modeset_commit+0x4f/0x80 drivers/gpu/drm/drm_client_modeset.c:1233
 __drm_fb_helper_restore_fbdev_mode_unlocked.part.0+0x137/0x160 drivers/gpu/drm/drm_fb_helper.c:138
 __drm_fb_helper_restore_fbdev_mode_unlocked drivers/gpu/drm/drm_fb_helper.c:126 [inline]
 drm_fb_helper_restore_fbdev_mode_unlocked+0x93/0xc0 drivers/gpu/drm/drm_fb_helper.c:169
 drm_fbdev_client_restore+0x1b/0x30 drivers/gpu/drm/clients/drm_fbdev_client.c:45
 drm_client_dev_restore+0x205/0x2a0 drivers/gpu/drm/drm_client_event.c:118
 drm_lastclose drivers/gpu/drm/drm_file.c:408 [inline]
 drm_release+0x2c6/0x360 drivers/gpu/drm/drm_file.c:441
 __fput+0x3ff/0xb50 fs/file_table.c:512
 task_work_run+0x150/0x240 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x1d8/0x700 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x661/0x790 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0b2cb9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22ac4df8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffc22ac4ee0 RCX: 00007f0b2cb9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000000277c7 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b32220000 R11: 0000000000000246 R12: 00007ffc22ac4f20
R13: 00007f0b2ce25fac R14: 0000000000028576 R15: 00007f0b2ce25fa0
 </TASK>