================================
WARNING: inconsistent lock state
5.17.0-rc2-next-20220204-syzkaller #0 Not tainted
--------------------------------
inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
syz-executor198/3589 [HC1[1]:SC0[0]:HE0:SE1] takes:
ffffffff8c705bf8 (sync_timeline_list_lock){?.+.}-{2:2}, at: sync_timeline_debug_remove+0x25/0x190 drivers/dma-buf/sync_debug.c:31
{HARDIRQ-ON-W} state was registered at:
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4224 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare+0x135/0x400 kernel/locking/lockdep.c:4244
trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
_raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202
spin_unlock_irq include/linux/spinlock.h:404 [inline]
sync_print_obj drivers/dma-buf/sync_debug.c:118 [inline]
sync_info_debugfs_show+0xeb/0x200 drivers/dma-buf/sync_debug.c:153
seq_read_iter+0x4f5/0x1280 fs/seq_file.c:230
seq_read+0x3e8/0x5c0 fs/seq_file.c:162
vfs_read+0x1b5/0x600 fs/read_write.c:480
ksys_read+0x12d/0x250 fs/read_write.c:620
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
irq event stamp: 18472
hardirqs last enabled at (18471): [<ffffffff895a5b8f>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
hardirqs last enabled at (18471): [<ffffffff895a5b8f>] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202
hardirqs last disabled at (18472): [<ffffffff8957366b>] sysvec_irq_work+0xb/0xc0 arch/x86/kernel/irq_work.c:17
softirqs last enabled at (13962): [<ffffffff812c0cdd>] fpu_reset_fpregs arch/x86/kernel/fpu/core.c:695 [inline]
softirqs last enabled at (13962): [<ffffffff812c0cdd>] fpu_flush_thread+0x29d/0x3e0 arch/x86/kernel/fpu/core.c:741
softirqs last disabled at (13960): [<ffffffff812c0c5c>] fpstate_reset arch/x86/kernel/fpu/core.c:545 [inline]
softirqs last disabled at (13960): [<ffffffff812c0c5c>] fpu_flush_thread+0x21c/0x3e0 arch/x86/kernel/fpu/core.c:740
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-executor198/3589.
stack backtrace:
CPU: 0 PID: 3589 Comm: syz-executor198 Not tainted 5.17.0-rc2-next-20220204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_usage_bug kernel/locking/lockdep.c:203 [inline]
valid_state kernel/locking/lockdep.c:3945 [inline]
mark_lock_irq kernel/locking/lockdep.c:4148 [inline]
mark_lock.cold+0x61/0x8e kernel/locking/lockdep.c:4605
mark_usage kernel/locking/lockdep.c:4497 [inline]
__lock_acquire+0x149d/0x54d0 kernel/locking/lockdep.c:4981
lock_acquire kernel/locking/lockdep.c:5639 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
sync_timeline_debug_remove+0x25/0x190 drivers/dma-buf/sync_debug.c:31
sync_timeline_free drivers/dma-buf/sw_sync.c:104 [inline]
kref_put include/linux/kref.h:65 [inline]
sync_timeline_put drivers/dma-buf/sw_sync.c:116 [inline]
timeline_fence_release+0x263/0x340 drivers/dma-buf/sw_sync.c:144
dma_fence_release+0x2ee/0x590 drivers/dma-buf/dma-fence.c:549
kref_put include/linux/kref.h:65 [inline]
dma_fence_put include/linux/dma-fence.h:276 [inline]
dma_fence_array_release+0x1e4/0x2b0 drivers/dma-buf/dma-fence-array.c:120
dma_fence_release+0x2ee/0x590 drivers/dma-buf/dma-fence.c:549
kref_put include/linux/kref.h:65 [inline]
dma_fence_put include/linux/dma-fence.h:276 [inline]
irq_dma_fence_array_work+0xa5/0xd0 drivers/dma-buf/dma-fence-array.c:52
irq_work_single+0x120/0x270 kernel/irq_work.c:211
irq_work_run_list+0x91/0xc0 kernel/irq_work.c:242
irq_work_run+0x54/0xd0 kernel/irq_work.c:251
__sysvec_irq_work+0x95/0x3d0 arch/x86/kernel/irq_work.c:22
sysvec_irq_work+0x8e/0xc0 arch/x86/kernel/irq_work.c:17
</IRQ>
<TASK>
asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:664
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 de f9 02 f8 48 89 ef e8 86 6f 03 f8 e8 f1 92 24 f8 fb bf 01 00 00 00 <e8> e6 21 f6 f7 65 8b 05 1f 14 a8 76 85 c0 74 02 5d c3 e8 ab e9 a5
RSP: 0018:ffffc90001d1fd18 EFLAGS: 00000206
RAX: 0000000000004827 RBX: 00000000ffffffff RCX: 1ffffffff1b28f29
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff888014ba0450 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817eeeb8 R11: 0000000000000000 R12: ffff888014ba0400
R13: dffffc0000000000 R14: ffff888014ba0400 R15: ffff888014ba0450
spin_unlock_irq include/linux/spinlock.h:404 [inline]
sw_sync_debugfs_release+0x160/0x240 drivers/dma-buf/sw_sync.c:321
__fput+0x286/0x9f0 fs/file_table.c:311
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xafa/0x2aa0 kernel/exit.c:806
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
__do_sys_exit_group kernel/exit.c:946 [inline]
__se_sys_exit_group kernel/exit.c:944 [inline]
__x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7eff4155eee9
Code: Unable to access opcode bytes at RIP 0x7eff4155eebf.
RSP: 002b:00007ffec62a5ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007eff415d32b0 RCX: 00007eff4155eee9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007eff415d32b0
----------------
Code disassembly (best guess):
0: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
5: 55 push %rbp
6: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
b: 48 89 fd mov %rdi,%rbp
e: 48 83 c7 18 add $0x18,%rdi
12: e8 de f9 02 f8 callq 0xf802f9f5
17: 48 89 ef mov %rbp,%rdi
1a: e8 86 6f 03 f8 callq 0xf8036fa5
1f: e8 f1 92 24 f8 callq 0xf8249315
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 e6 21 f6 f7 callq 0xf7f62215 <-- trapping instruction
2f: 65 8b 05 1f 14 a8 76 mov %gs:0x76a8141f(%rip),%eax # 0x76a81455
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5d pop %rbp
3b: c3 retq
3c: e8 .byte 0xe8
3d: ab stos %eax,%es:(%rdi)
3e: e9 .byte 0xe9
3f: a5 movsl %ds:(%rsi),%es:(%rdi)