================================
WARNING: inconsistent lock state
6.9.0-syzkaller-08284-gea5f6ad9ad96 #0 Not tainted
--------------------------------
inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
syz-executor.2/9257 [HC1[1]:SC0[0]:HE0:SE1] takes:
ffffffff8ea373b8 (sync_timeline_list_lock){?.+.}-{2:2}, at: sync_timeline_debug_remove+0x29/0x1a0 drivers/dma-buf/sync_debug.c:31
{HARDIRQ-ON-W} state was registered at:
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare+0x137/0x420 kernel/locking/lockdep.c:4359
trace_hardirqs_on+0x36/0x40 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+0xf4/0x210 drivers/dma-buf/sync_debug.c:153
seq_read_iter+0x4fa/0x12c0 fs/seq_file.c:230
seq_read+0x390/0x4d0 fs/seq_file.c:162
vfs_read+0x1d4/0xb80 fs/read_write.c:474
ksys_read+0x12f/0x260 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
irq event stamp: 144
hardirqs last enabled at (143): [<ffffffff8ae94d33>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
hardirqs last enabled at (143): [<ffffffff8ae94d33>] _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202
hardirqs last disabled at (144): [<ffffffff8ae57dee>] sysvec_irq_work+0xe/0xb0 arch/x86/kernel/irq_work.c:17
softirqs last enabled at (122): [<ffffffff8151e3ae>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last enabled at (122): [<ffffffff8151e3ae>] handle_softirqs+0x5be/0x8f0 kernel/softirq.c:582
softirqs last disabled at (85): [<ffffffff8151f17b>] __do_softirq kernel/softirq.c:588 [inline]
softirqs last disabled at (85): [<ffffffff8151f17b>] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last disabled at (85): [<ffffffff8151f17b>] __irq_exit_rcu kernel/softirq.c:637 [inline]
softirqs last disabled at (85): [<ffffffff8151f17b>] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
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 ***
no locks held by syz-executor.2/9257.
stack backtrace:
CPU: 1 PID: 9257 Comm: syz-executor.2 Not tainted 6.9.0-syzkaller-08284-gea5f6ad9ad96 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
print_usage_bug kernel/locking/lockdep.c:3971 [inline]
valid_state kernel/locking/lockdep.c:4013 [inline]
mark_lock_irq kernel/locking/lockdep.c:4216 [inline]
mark_lock+0x923/0xc60 kernel/locking/lockdep.c:4678
mark_usage kernel/locking/lockdep.c:4564 [inline]
__lock_acquire+0x1359/0x3b30 kernel/locking/lockdep.c:5091
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
sync_timeline_debug_remove+0x29/0x1a0 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+0x262/0x340 drivers/dma-buf/sw_sync.c:165
dma_fence_release+0x308/0x560 drivers/dma-buf/dma-fence.c:560
kref_put include/linux/kref.h:65 [inline]
dma_fence_put include/linux/dma-fence.h:297 [inline]
dma_fence_put include/linux/dma-fence.h:294 [inline]
dma_fence_array_release+0x1fa/0x2e0 drivers/dma-buf/dma-fence-array.c:120
dma_fence_release+0x308/0x560 drivers/dma-buf/dma-fence.c:560
kref_put include/linux/kref.h:65 [inline]
dma_fence_put include/linux/dma-fence.h:297 [inline]
dma_fence_put include/linux/dma-fence.h:294 [inline]
irq_dma_fence_array_work+0xa9/0xd0 drivers/dma-buf/dma-fence-array.c:52
irq_work_single+0x1bc/0x260 kernel/irq_work.c:221
irq_work_run_list+0x92/0xc0 kernel/irq_work.c:252
irq_work_run+0x58/0xd0 kernel/irq_work.c:261
__sysvec_irq_work+0x8c/0x410 arch/x86/kernel/irq_work.c:22
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0x90/0xb0 arch/x86/kernel/irq_work.c:17
</IRQ>
<TASK>
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 0a 76 82 f6 48 89 df e8 f2 f2 82 f6 e8 6d b4 ab f6 fb bf 01 00 00 00 <e8> a2 33 74 f6 65 8b 05 43 8a 1a 75 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc9000387fda8 EFLAGS: 00000202
RAX: 000000000000008f RBX: ffff88801af31950 RCX: 1ffffffff1fc7391
RDX: 0000000000000000 RSI: ffffffff8b2ca9a0 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8fe3df17 R11: 0000000000000001 R12: ffff88801af31900
R13: dffffc0000000000 R14: ffff88801af31900 R15: ffff88801af31950
spin_unlock_irq include/linux/spinlock.h:401 [inline]
sw_sync_debugfs_release+0x164/0x240 drivers/dma-buf/sw_sync.c:359
__fput+0x270/0xb80 fs/file_table.c:422
task_work_run+0x14e/0x250 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+0x278/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8615e7cee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8616c0e0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f8615fac050 RCX: 00007f8615e7cee9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f8615ec949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8615fac050 R15: 00007ffe4ff49e98
</TASK>
----------------
Code disassembly (best guess):
0: 90 nop
1: f3 0f 1e fa endbr64
5: 53 push %rbx
6: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
b: 48 89 fb mov %rdi,%rbx
e: 48 83 c7 18 add $0x18,%rdi
12: e8 0a 76 82 f6 call 0xf6827621
17: 48 89 df mov %rbx,%rdi
1a: e8 f2 f2 82 f6 call 0xf682f311
1f: e8 6d b4 ab f6 call 0xf6abb491
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 a2 33 74 f6 call 0xf67433d1 <-- trapping instruction
2f: 65 8b 05 43 8a 1a 75 mov %gs:0x751a8a43(%rip),%eax # 0x751a8a79
36: 85 c0 test %eax,%eax
38: 74 06 je 0x40
3a: 5b pop %rbx
3b: c3 ret
3c: cc int3
3d: cc int3
3e: cc int3
3f: cc int3