------------[ cut here ]------------
WARNING: ./include/linux/sched.h:2173 at __clear_task_blocked_on include/linux/sched.h:2173 [inline], CPU#1: syz.0.1331/10181
WARNING: ./include/linux/sched.h:2173 at __ww_mutex_wound+0x21a/0x2b0 kernel/locking/ww_mutex.h:346, CPU#1: syz.0.1331/10181
Modules linked in:
CPU: 1 UID: 0 PID: 10181 Comm: syz.0.1331 Not tainted 6.16.0-rc6-next-20250718-syzkaller #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:2173 [inline]
RIP: 0010:__ww_mutex_wound+0x21a/0x2b0 kernel/locking/ww_mutex.h:346
Code: 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 e9 89 fe ff ff 90 0f 0b 90 e9 39 ff ff ff 90 0f 0b 90 4d 85 ff 0f 85 67 ff ff ff eb 95 90 <0f> 0b 90 eb 8f 48 c7 c1 70 00 e4 8f 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc9000bff7720 EFLAGS: 00010046
RAX: ffff888024dac400 RBX: dffffc0000000000 RCX: 5b25136eebb50300
RDX: 0000000000000407 RSI: ffffffff8de5b067 RDI: ffffffff8c04d400
RBP: 0000000000000001 R08: ffff888024d7a04f R09: 1ffff110049af409
R10: dffffc0000000000 R11: ffffed10049af40a R12: ffff88801efa4678
R13: ffffc9000bff7ae8 R14: ffff88801efa3c00 R15: ffff888024d7a048
FS:  00007ffbe21366c0(0000) GS:ffff8881258ab000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffbe2115d58 CR3: 000000007658c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __ww_mutex_add_waiter kernel/locking/ww_mutex.h:574 [inline]
 __mutex_lock_common kernel/locking/mutex.c:642 [inline]
 __ww_mutex_lock+0xba3/0x2930 kernel/locking/mutex.c:771
 ww_mutex_lock_interruptible+0x3f/0x1c0 kernel/locking/mutex.c:904
 modeset_lock+0x21a/0x650 drivers/gpu/drm/drm_modeset_lock.c:-1
 drm_modeset_lock drivers/gpu/drm/drm_modeset_lock.c:398 [inline]
 drm_modeset_lock_all_ctx+0x1b4/0x300 drivers/gpu/drm/drm_modeset_lock.c:470
 setplane_internal drivers/gpu/drm/drm_plane.c:1118 [inline]
 drm_mode_setplane+0x577/0xba0 drivers/gpu/drm/drm_plane.c:1175
 drm_ioctl_kernel+0x2cc/0x390 drivers/gpu/drm/drm_ioctl.c:796
 drm_ioctl+0x67f/0xb10 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+0xf9/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffbe138e9a9
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:00007ffbe2136038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffbe15b5fa0 RCX: 00007ffbe138e9a9
RDX: 0000200000000080 RSI: 00000000c03064b7 RDI: 0000000000000003
RBP: 00007ffbe1410d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffbe15b5fa0 R15: 00007ffd3509af08
 </TASK>