================================ WARNING: inconsistent lock state 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. modprobe/5550 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff888029f15148 (&timer->lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff888029f15148 (&timer->lock){?.+.}-{2:2}, at: class_spinlock_constructor include/linux/spinlock.h:561 [inline] ffff888029f15148 (&timer->lock){?.+.}-{2:2}, at: snd_hrtimer_callback+0x4d/0x420 sound/core/hrtimer.c:38 {HARDIRQ-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: 4412 hardirqs last enabled at (4411): [] percpu_counter_add_batch+0x112/0x1f0 lib/percpu_counter.c:102 hardirqs last disabled at (4412): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (4164): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (4164): [] __do_softirq+0x596/0x8de kernel/softirq.c:583 softirqs last disabled at (4031): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (4031): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (4031): [] 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 *** 2 locks held by modprobe/5550: #0: ffff8880699981a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:124 [inline] #0: ffff8880699981a0 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x3c0 mm/util.c:571 #1: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #1: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #1: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: mt_validate+0xd5/0x4390 lib/maple_tree.c:7578 stack backtrace: CPU: 1 PID: 5550 Comm: modprobe 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:4564 [inline] __lock_acquire+0x1359/0x3b30 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 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_hrtimer_callback+0x4d/0x420 sound/core/hrtimer.c:38 __run_hrtimer kernel/time/hrtimer.c:1692 [inline] __hrtimer_run_queues+0x20c/0xc20 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x10f/0x410 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:mas_validate_limits lib/maple_tree.c:7471 [inline] RIP: 0010:mt_validate+0xd3d/0x4390 lib/maple_tree.c:7595 Code: 82 cc f6 49 83 ff 03 0f 87 f1 30 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 4c 24 20 48 89 c8 83 e1 07 48 c1 e8 03 0f b6 04 10 <38> c8 7f 08 84 c0 0f 85 b9 30 00 00 45 0f b6 af e0 60 5b 8c 89 de RSP: 0018:ffffc900044676d0 EFLAGS: 00000a02 RAX: 0000000000000004 RBX: 0000000000000002 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8ac075f6 RDI: 0000000000000006 RBP: 0000000000000001 R08: 0000000000000006 R09: 00007f8e50e00fff R10: 00007f8e50fc6fff R11: 0000000000000001 R12: 00007f8e50e00fff R13: 00007f8e50fc6fff R14: ffff88802f7f1c10 R15: 0000000000000001 validate_mm+0x9c/0x4b0 mm/mmap.c:288 do_vmi_align_munmap+0x1553/0x1ad0 mm/mmap.c:2640 do_vmi_munmap+0x20b/0x450 mm/mmap.c:2703 mmap_region+0x17e/0x2aa0 mm/mmap.c:2754 do_mmap+0x8ae/0xf10 mm/mmap.c:1387 vm_mmap_pgoff+0x1ab/0x3c0 mm/util.c:573 ksys_mmap_pgoff+0x425/0x5b0 mm/mmap.c:1433 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79 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: 0033:0x7f8e510adb74 Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f RSP: 002b:00007ffdd0fd5878 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007ffdd0fd5928 RCX: 00007f8e510adb74 RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007f8e50ddd000 RBP: 00007ffdd0fd5c10 R08: 0000000000000000 R09: 0000000000052000 R10: 0000000000000812 R11: 0000000000000246 R12: 00007f8e5108b570 R13: 00007ffdd0fd5c98 R14: 0000000000052120 R15: 0000000000000000 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 49 83 ff 03 cmp $0x3,%r15 4: 0f 87 f1 30 00 00 ja 0x30fb a: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 11: fc ff df 14: 48 8b 4c 24 20 mov 0x20(%rsp),%rcx 19: 48 89 c8 mov %rcx,%rax 1c: 83 e1 07 and $0x7,%ecx 1f: 48 c1 e8 03 shr $0x3,%rax 23: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax * 27: 38 c8 cmp %cl,%al <-- trapping instruction 29: 7f 08 jg 0x33 2b: 84 c0 test %al,%al 2d: 0f 85 b9 30 00 00 jne 0x30ec 33: 45 0f b6 af e0 60 5b movzbl -0x73a49f20(%r15),%r13d 3a: 8c 3b: 89 de mov %ebx,%esi