================================ WARNING: inconsistent lock state 5.19.0-syzkaller-02972-g200e340f2196 #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor243/3609 [HC1[1]:SC0[0]:HE0:SE1] takes: ffffffff8c94cb58 (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:4252 [inline] lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4319 [inline] lockdep_hardirqs_on_prepare+0x135/0x400 kernel/locking/lockdep.c:4271 trace_hardirqs_on+0x2d/0x120 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:399 [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+0x2c7/0x420 fs/seq_file.c:162 vfs_read+0x1ef/0x5d0 fs/read_write.c:469 ksys_read+0x127/0x250 fs/read_write.c:609 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+0x63/0xcd irq event stamp: 9828 hardirqs last enabled at (9827): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (9827): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (9828): [] sysvec_irq_work+0xb/0xc0 arch/x86/kernel/irq_work.c:17 softirqs last enabled at (9282): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (9282): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (9255): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (9255): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(sync_timeline_list_lock); lock(sync_timeline_list_lock); *** DEADLOCK *** no locks held by syz-executor243/3609. stack backtrace: CPU: 0 PID: 3609 Comm: syz-executor243 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __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:3961 [inline] valid_state kernel/locking/lockdep.c:3973 [inline] mark_lock_irq kernel/locking/lockdep.c:4176 [inline] mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4524 [inline] __lock_acquire+0x14ad/0x5660 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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+0x1f6/0x2d0 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+0x120/0x250 kernel/irq_work.c:211 irq_work_run_list kernel/irq_work.c:242 [inline] irq_work_run_list+0x91/0xc0 kernel/irq_work.c:225 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 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:675 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 be ed e2 f7 48 89 ef e8 56 6f e3 f7 e8 41 84 05 f8 fb bf 01 00 00 00 46 71 d6 f7 65 8b 05 af 98 87 76 85 c0 74 02 5d c3 e8 fb 6e 85 RSP: 0018:ffffc900030d7d18 EFLAGS: 00000206 RAX: 0000000000002663 RBX: 00000000ffffffff RCX: 1ffffffff1b76681 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff888017021f50 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed1002e043ea R11: 0000000000000001 R12: ffff888017021f00 R13: dffffc0000000000 R14: ffff888017021f00 R15: ffff888017021f50 spin_unlock_irq include/linux/spinlock.h:399 [inline] sw_sync_debugfs_release+0x160/0x240 drivers/dma-buf/sw_sync.c:321 __fput+0x277/0x9d0 fs/file_table.c:319 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xade/0x29d0 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 __do_sys_exit_group kernel/exit.c:936 [inline] __se_sys_exit_group kernel/exit.c:934 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:934 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+0x63/0xcd RIP: 0033:0x7f6248b83969 Code: Unable to access opcode bytes at RIP 0x7f6248b8393f. RSP: 002b:00007fff6c63ca88 ---------------- 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 be ed e2 f7 callq 0xf7e2edd5 17: 48 89 ef mov %rbp,%rdi 1a: e8 56 6f e3 f7 callq 0xf7e36f75 1f: e8 41 84 05 f8 callq 0xf8058465 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 46 71 d6 f7 callq 0xf7d67175 <-- trapping instruction 2f: 65 8b 05 af 98 87 76 mov %gs:0x768798af(%rip),%eax # 0x768798e5 36: 85 c0 test %eax,%eax 38: 74 02 je 0x3c 3a: 5d pop %rbp 3b: c3 retq 3c: e8 .byte 0xe8 3d: fb sti 3e: 6e outsb %ds:(%rsi),(%dx) 3f: 85 .byte 0x85