================================ WARNING: inconsistent lock state 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. sed/6412 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff88802940d948 (&timer->lock){+.?.}-{2:2}, at: class_spinlock_irqsave_constructor include/linux/spinlock.h:574 [inline] ffff88802940d948 (&timer->lock){+.?.}-{2:2}, at: snd_timer_interrupt.part.0+0x31/0xd80 sound/core/timer.c:818 {SOFTIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] class_spinlock_constructor include/linux/spinlock.h:561 [inline] snd_timer_close_locked+0x65/0xbd0 sound/core/timer.c:412 snd_timer_close+0x8b/0xf0 sound/core/timer.c:464 snd_seq_timer_close+0xa4/0x100 sound/core/seq/seq_timer.c:302 queue_delete+0x49/0xa0 sound/core/seq/seq_queue.c:126 snd_seq_queue_delete+0x45/0x60 sound/core/seq/seq_queue.c:188 snd_seq_kernel_client_ctl+0x107/0x1c0 sound/core/seq/seq_clientmgr.c:2526 delete_seq_queue.isra.0+0xc8/0x150 sound/core/seq/oss/seq_oss_init.c:371 odev_release+0x52/0x80 sound/core/seq/oss/seq_oss.c:144 __fput+0x270/0xb80 fs/file_table.c:422 __fput_sync+0x47/0x50 fs/file_table.c:507 __do_sys_close fs/open.c:1556 [inline] __se_sys_close fs/open.c:1541 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1541 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 irq event stamp: 5459 hardirqs last enabled at (5458): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (5458): [] _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 hardirqs last disabled at (5459): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (5459): [] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162 softirqs last enabled at (5186): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (5186): [] __do_softirq+0x596/0x8de kernel/softirq.c:583 softirqs last disabled at (5339): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (5339): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (5339): [] irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&timer->lock); lock(&timer->lock); *** DEADLOCK *** 5 locks held by sed/6412: #0: ffff8880574160a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline] #0: ffff8880574160a0 (&mm->mmap_lock){++++}-{3:3}, at: do_mprotect_pkey+0x23f/0xd70 mm/mprotect.c:711 #1: ffff88807e2a74d0 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: i_mmap_lock_write include/linux/fs.h:503 [inline] #1: ffff88807e2a74d0 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: vma_prepare+0x157/0x6a0 mm/mmap.c:472 #2: ffff88802dd7dd38 (&anon_vma->rwsem){++++}-{3:3}, at: anon_vma_lock_write include/linux/rmap.h:121 [inline] #2: ffff88802dd7dd38 (&anon_vma->rwsem){++++}-{3:3}, at: vma_prepare+0x299/0x6a0 mm/mmap.c:486 #3: ffffffff8e235500 (fill_pool_map-wait-type-override){+.+.}-{3:3}, at: debug_objects_fill_pool lib/debugobjects.c:614 [inline] #3: ffffffff8e235500 (fill_pool_map-wait-type-override){+.+.}-{3:3}, at: debug_object_activate+0x13e/0x540 lib/debugobjects.c:704 #4: ffffc90000a08cb0 ((&priv->tlist)){+.-.}-{0:0}, at: call_timer_fn+0x11a/0x5b0 kernel/time/timer.c:1789 stack backtrace: CPU: 1 PID: 6412 Comm: sed Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __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:4567 [inline] __lock_acquire+0x13d4/0x3b30 kernel/locking/lockdep.c:5091 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 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 class_spinlock_irqsave_constructor include/linux/spinlock.h:574 [inline] snd_timer_interrupt.part.0+0x31/0xd80 sound/core/timer.c:818 snd_timer_interrupt sound/core/timer.c:1107 [inline] snd_timer_s_function+0x14f/0x200 sound/core/timer.c:1107 call_timer_fn+0x1a0/0x5b0 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers+0x74b/0xab0 kernel/time/timer.c:2408 __run_timer_base kernel/time/timer.c:2419 [inline] __run_timer_base kernel/time/timer.c:2412 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2428 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2438 __do_softirq+0x218/0x8de kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:633 [inline] irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x1f2/0x540 kernel/locking/lockdep.c:5722 Code: c1 05 ea 37 97 7e 83 f8 01 0f 85 c8 02 00 00 9c 58 f6 c4 02 0f 85 b3 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc90003d47490 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff920007a8e94 RCX: 00000000da9d9c8a RDX: 0000000000000001 RSI: ffffffff8b0cba40 RDI: ffffffff8b6e88a0 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff27b4e30 R10: ffffffff93da7187 R11: 0000000000000003 R12: 0000000000000001 R13: 0000000000000001 R14: ffffffff8e235500 R15: 0000000000000000 debug_objects_fill_pool lib/debugobjects.c:614 [inline] debug_object_activate+0x14c/0x540 lib/debugobjects.c:704 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline] __call_rcu_common.constprop.0+0x2c/0x790 kernel/rcu/tree.c:2719 mas_free lib/maple_tree.c:1304 [inline] mas_replace_node lib/maple_tree.c:1741 [inline] mas_wr_node_store+0xe50/0x1770 lib/maple_tree.c:3958 mas_wr_modify lib/maple_tree.c:4191 [inline] mas_wr_store_entry.isra.0+0x663/0x1630 lib/maple_tree.c:4231 mas_store_prealloc+0xb6/0x2a0 lib/maple_tree.c:5487 vma_complete+0x8ff/0xdf0 mm/mmap.c:532 __split_vma+0xe3e/0x1190 mm/mmap.c:2389 split_vma mm/mmap.c:2415 [inline] vma_modify+0x32a/0x460 mm/mmap.c:2457 vma_modify_flags include/linux/mm.h:3283 [inline] mprotect_fixup+0x228/0xc90 mm/mprotect.c:635 do_mprotect_pkey+0x859/0xd70 mm/mprotect.c:809 __do_sys_mprotect mm/mprotect.c:830 [inline] __se_sys_mprotect mm/mprotect.c:827 [inline] __x64_sys_mprotect+0x78/0xc0 mm/mprotect.c:827 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f2bcaef0bb7 Code: 00 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d b9 46 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 99 46 01 00 f7 d8 89 01 48 83 RSP: 002b:00007ffcbe8f9078 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 00007f2bcaf052a0 RCX: 00007f2bcaef0bb7 RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00005595313a1000 RBP: 00007ffcbe8f9190 R08: 00007ffcbe8f9008 R09: 00007f2bcaecd0c0 R10: 000055953139e488 R11: 0000000000000206 R12: 00007f2bcaf052a0 R13: 00007f2bcaef8eda R14: 00005595313a1fd0 R15: 00005595313a1f40 ---------------- Code disassembly (best guess): 0: c1 05 ea 37 97 7e 83 roll $0x83,0x7e9737ea(%rip) # 0x7e9737f1 7: f8 clc 8: 01 0f add %ecx,(%rdi) a: 85 c8 test %ecx,%eax c: 02 00 add (%rax),%al e: 00 9c 58 f6 c4 02 0f add %bl,0xf02c4f6(%rax,%rbx,2) 15: 85 b3 02 00 00 48 test %esi,0x48000002(%rbx) 1b: 85 ed test %ebp,%ebp 1d: 74 01 je 0x20 1f: fb sti 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction 2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 3b: 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 84 .byte 0x84 3f: 24 .byte 0x24