------------[ cut here ]------------
WARNING: CPU: 1 PID: 6268 at ./include/linux/sched.h:2177 __clear_task_blocked_on include/linux/sched.h:2177 [inline]
WARNING: CPU: 1 PID: 6268 at ./include/linux/sched.h:2177 __ww_mutex_wound+0x23b/0x3e0 kernel/locking/ww_mutex.h:346
Modules linked in:
CPU: 1 UID: 0 PID: 6268 Comm: syz.0.125 Not tainted 6.16.0-syzkaller-06699-ge8d780dcd957 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__clear_task_blocked_on include/linux/sched.h:2177 [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:ffffc90004657858 EFLAGS: 00010083
RAX: ffff888105598050 RBX: ffff8881055904b8 RCX: ffff888025f44880
RDX: 1ffff11004be8a5f RSI: ffffffff8ddeda1f RDI: ffffffff8c160b80
RBP: ffff888025f452f8 R08: 0000000000000000 R09: ffffed1020ab2097
R10: ffff8881055904bf R11: 0000000000000001 R12: ffffc900041e7b60
R13: 0000000000000001 R14: 0000000000000007 R15: ffffc90004657950
FS:  00005555815fc500(0000) GS:ffff8880d681e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d65ffff CR3: 000000003203a000 CR4: 0000000000352ef0
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+0x1a3e/0x3110 kernel/locking/mutex.c:767
 ww_mutex_lock+0x37/0x160 kernel/locking/mutex.c:885
 modeset_lock+0x4a0/0x6e0 drivers/gpu/drm/drm_modeset_lock.c:314
 drm_modeset_lock drivers/gpu/drm/drm_modeset_lock.c:396 [inline]
 drm_modeset_lock drivers/gpu/drm/drm_modeset_lock.c:392 [inline]
 drm_modeset_lock_all_ctx+0x70/0x3f0 drivers/gpu/drm/drm_modeset_lock.c:457
 drm_mode_obj_get_properties_ioctl+0x326/0x650 drivers/gpu/drm/drm_mode_object.c:447
 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+0x18e/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: 0033:0x7ff036b8e9a9
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:00007ffe0ea841a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff036db5fa0 RCX: 00007ff036b8e9a9
RDX: 0000200000000dc0 RSI: 00000000c02064b9 RDI: 0000000000000003
RBP: 00007ff036c10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff036db5fa0 R14: 00007ff036db5fa0 R15: 0000000000000003
 </TASK>