------------[ cut here ]------------
WARNING: CPU: 1 PID: 10396 at ./include/linux/sched.h:2185 __clear_task_blocked_on include/linux/sched.h:2185 [inline]
WARNING: CPU: 1 PID: 10396 at ./include/linux/sched.h:2185 __ww_mutex_wound+0x23b/0x3e0 kernel/locking/ww_mutex.h:346
Modules linked in:
CPU: 1 UID: 0 PID: 10396 Comm: syz.2.1189 Not tainted 6.16.0-syzkaller-12256-g561c80369df0 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__clear_task_blocked_on include/linux/sched.h:2185 [inline]
RIP: 0010:__ww_mutex_wound+0x23b/0x3e0 kernel/locking/ww_mutex.h:346
Code: 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 85 01 00 00 48 8b 81 78 0a 00 00 48 85 c0 74 09 48 39 c3 74 04 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c
RSP: 0018:ffffc9000540f848 EFLAGS: 00010012
RAX: ffff888025c34048 RBX: ffff888141384050 RCX: ffff8880322e0000
RDX: 1ffff1100645c14f RSI: ffffffff8de29c30 RDI: ffffffff8c162500
RBP: ffff8880322e0a78 R08: 0000000000000000 R09: ffffed102827080a
R10: ffff888141384057 R11: 0000000000000000 R12: ffffc90005947b60
R13: 0000000000000001 R14: 0000000000000007 R15: ffffc9000540f940
FS:  00007f3df336b6c0(0000) GS:ffff8881247bd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3df336af98 CR3: 0000000050bdc000 CR4: 00000000003526f0
DR0: 0000000000000007 DR1: 7fffffffffffffff DR2: 0000000000000fb3
DR3: 0000000000000101 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ww_mutex_add_waiter kernel/locking/ww_mutex.h:574 [inline]
 __mutex_lock_common kernel/locking/mutex.c:638 [inline]
 __ww_mutex_lock.constprop.0+0x1a69/0x32c0 kernel/locking/mutex.c:767
 ww_mutex_lock_interruptible+0x37/0x160 kernel/locking/mutex.c:900
 modeset_lock+0x1e2/0x6e0 drivers/gpu/drm/drm_modeset_lock.c:311
 drm_modeset_lock drivers/gpu/drm/drm_modeset_lock.c:398 [inline]
 drm_modeset_lock+0x59/0x90 drivers/gpu/drm/drm_modeset_lock.c:394
 drm_mode_page_flip_ioctl+0x5ad/0x1460 drivers/gpu/drm/drm_plane.c:1461
 drm_ioctl_kernel+0x1f4/0x3e0 drivers/gpu/drm/drm_ioctl.c:796
 drm_ioctl+0x5c9/0xc30 drivers/gpu/drm/drm_ioctl.c:893
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3df258ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3df336b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3df27b6090 RCX: 00007f3df258ebe9
RDX: 0000200000000240 RSI: 00000000c01864b0 RDI: 0000000000000004
RBP: 00007f3df2611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3df27b6128 R14: 00007f3df27b6090 R15: 00007ffe6c2afd18
 </TASK>