================================
WARNING: inconsistent lock state
6.10.0-rc1-syzkaller-00013-g2bfcfd584ff5 #0 Not tainted
--------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
syz-executor.3/8570 [HC0[0]:SC0[0]:HE0:SE1] takes:
ffffffff8ecc8038 (sync_timeline_list_lock){?...}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
ffffffff8ecc8038 (sync_timeline_list_lock){?...}-{2:2}, at: sync_info_debugfs_show+0x99/0x4d0 drivers/dma-buf/sync_debug.c:147
{IN-HARDIRQ-W} state was registered at:
  lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
  __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
  _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
  sync_timeline_debug_remove+0x2c/0x150 drivers/dma-buf/sync_debug.c:31
  sync_timeline_free drivers/dma-buf/sw_sync.c:125 [inline]
  kref_put include/linux/kref.h:65 [inline]
  sync_timeline_put drivers/dma-buf/sw_sync.c:137 [inline]
  timeline_fence_release+0x204/0x250 drivers/dma-buf/sw_sync.c:165
  kref_put include/linux/kref.h:65 [inline]
  dma_fence_put include/linux/dma-fence.h:297 [inline]
  dma_fence_array_release+0x13e/0x240 drivers/dma-buf/dma-fence-array.c:120
  irq_work_single+0xe2/0x240 kernel/irq_work.c:221
  irq_work_run_list kernel/irq_work.c:252 [inline]
  irq_work_run+0x18b/0x350 kernel/irq_work.c:261
  __sysvec_irq_work+0xb8/0x430 arch/x86/kernel/irq_work.c:22
  instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
  sysvec_irq_work+0x9e/0xc0 arch/x86/kernel/irq_work.c:17
  asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
  __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
  _raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
  spin_unlock_irq include/linux/spinlock.h:401 [inline]
  sw_sync_debugfs_release+0x14b/0x1d0 drivers/dma-buf/sw_sync.c:359
  __fput+0x406/0x8b0 fs/file_table.c:422
  task_work_run+0x24f/0x310 kernel/task_work.c:180
  resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
  exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
  exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
  __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
  syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
  __do_fast_syscall_32+0xc4/0x120 arch/x86/entry/common.c:389
  do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
  entry_SYSENTER_compat_after_hwframe+0x84/0x8e
irq event stamp: 248
hardirqs last  enabled at (247): [<ffffffff8b9112bf>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (247): [<ffffffff8b9112bf>] _raw_spin_unlock_irqrestore+0x8f/0x140 kernel/locking/spinlock.c:194
hardirqs last disabled at (248): [<ffffffff8b9110ed>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
hardirqs last disabled at (248): [<ffffffff8b9110ed>] _raw_spin_lock_irq+0xad/0x120 kernel/locking/spinlock.c:170
softirqs last  enabled at (0): [<ffffffff81576de3>] rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
softirqs last  enabled at (0): [<ffffffff81576de3>] rcu_read_lock include/linux/rcupdate.h:781 [inline]
softirqs last  enabled at (0): [<ffffffff81576de3>] copy_process+0xa03/0x3dc0 kernel/fork.c:2259
softirqs last disabled at (0): [<0000000000000000>] 0x0

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(sync_timeline_list_lock);
  <Interrupt>
    lock(sync_timeline_list_lock);

 *** DEADLOCK ***

3 locks held by syz-executor.3/8570:
 #0: ffff88806396cfc8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
 #1: ffff88801e742d58 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xb7/0xd60 fs/seq_file.c:182
 #2: ffffffff8ecc8038 (sync_timeline_list_lock){?...}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
 #2: ffffffff8ecc8038 (sync_timeline_list_lock){?...}-{2:2}, at: sync_info_debugfs_show+0x99/0x4d0 drivers/dma-buf/sync_debug.c:147

stack backtrace:
CPU: 0 PID: 8570 Comm: syz-executor.3 Not tainted 6.10.0-rc1-syzkaller-00013-g2bfcfd584ff5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 valid_state+0x13a/0x1c0 kernel/locking/lockdep.c:4013
 mark_lock_irq+0xbb/0xc20 kernel/locking/lockdep.c:4216
 mark_lock+0x223/0x350 kernel/locking/lockdep.c:4678
 mark_held_locks kernel/locking/lockdep.c:4274 [inline]
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline]
 lockdep_hardirqs_on_prepare+0x282/0x780 kernel/locking/lockdep.c:4359
 trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
 _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 sync_print_obj drivers/dma-buf/sync_debug.c:118 [inline]
 sync_info_debugfs_show+0x15d/0x4d0 drivers/dma-buf/sync_debug.c:153
 seq_read_iter+0x445/0xd60 fs/seq_file.c:230
 seq_read+0x3a4/0x4f0 fs/seq_file.c:162
 vfs_read+0x204/0xbd0 fs/read_write.c:474
 ksys_read+0x1a0/0x2c0 fs/read_write.c:619
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf73db579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5e645ac EFLAGS: 00000206 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000a00
RDX: 0000000000002020 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop