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WARNING: CPU: 0 PID: 5943 at drivers/gpu/drm/drm_prime.c:223 drm_prime_destroy_file_private+0x4b/0x60
Modules linked in:
CPU: 0 UID: 0 PID: 5943 Comm: syz.2.9 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:drm_prime_destroy_file_private+0x4b/0x60
Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 cd c4 f1 fc 48 83 3b 00 75 0c e8 02 c4 8b fc 5b e9 cc 0f 16 06 cc e8 f6 c3 8b fc 90 <0f> 0b 90 5b e9 bc 0f 16 06 cc 66 66 2e 0f 1f 84 00 00 00 00 00 90
RSP: 0018:ffffc90005d4fc60 EFLAGS: 00010293
RAX: ffffffff8534555a RBX: ffff88816e3c1410 RCX: ffff8881bc91ba00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88816e3c1380
RBP: ffff88816e3c12c8 R08: ffffc90005d4fbe7 R09: 1ffff92000ba9f7c
R10: dffffc0000000000 R11: fffff52000ba9f7d R12: dffffc0000000000
R13: dead000000000100 R14: 0000000000000000 R15: ffff88816e3c12d8
FS:  0000555563189500(0000) GS:ffff88818eb36000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c41bded CR3: 0000000172008000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 drm_file_free+0x7f2/0xa00
 drm_release+0x2de/0x3f0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xe9/0x130
 do_syscall_64+0x2bd/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc1bcd8f749
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:00007ffe23beb818 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000000ef08 RCX: 00007fc1bcd8f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc1bcfe7da0 R08: 0000000000000001 R09: 0000000c23bebb0f
R10: 0000001b2f720000 R11: 0000000000000246 R12: 00007fc1bcfe5fac
R13: 00007fc1bcfe5fa0 R14: ffffffffffffffff R15: 00007ffe23beb930
 </TASK>
