================================ WARNING: inconsistent lock state 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.1/5695 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff88802980e148 (&timer->lock){+.?.}-{2:2}, at: class_spinlock_irqsave_constructor include/linux/spinlock.h:574 [inline] ffff88802980e148 (&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_timer_user_release+0x91/0x260 sound/core/timer.c:1468 __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: 4169 hardirqs last enabled at (4168): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (4168): [] _raw_spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 hardirqs last disabled at (4169): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (4169): [] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162 softirqs last enabled at (3830): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (3830): [] remove_user_radios drivers/net/wireless/virtual/mac80211_hwsim.c:6353 [inline] softirqs last enabled at (3830): [] mac80211_hwsim_netlink_notify+0x22f/0x8e0 drivers/net/wireless/virtual/mac80211_hwsim.c:6371 softirqs last disabled at (4165): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (4165): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (4165): [] 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 *** 4 locks held by syz-executor.1/5695: #0: ffff88802bdc01a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:146 [inline] #0: ffff88802bdc01a0 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x107/0xb60 mm/mmap.c:3271 #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: __pte_offset_map+0x42/0x540 mm/pgtable-generic.c:285 #2: ffff88807c1e2078 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #2: ffff88807c1e2078 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0xf1/0x300 mm/pgtable-generic.c:373 #3: ffffc90000007cb0 ((&priv->tlist)){+.-.}-{0:0}, at: call_timer_fn+0x11a/0x5b0 kernel/time/timer.c:1789 stack backtrace: CPU: 0 PID: 5695 Comm: syz-executor.1 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:__page_table_check_pte_clear+0x28/0x570 mm/page_table_check.c:153 Code: 90 90 f3 0f 1e fa 41 56 41 55 41 54 49 bc 00 00 00 00 00 fc ff df 55 48 89 fd 53 48 83 ec 60 48 89 e3 48 c7 04 24 b3 8a b5 41 <48> c7 44 24 08 bd 91 12 8d 48 c1 eb 03 48 c7 44 24 10 10 1f f2 81 RSP: 0018:ffffc90003d5f850 EFLAGS: 00000286 RAX: 0000000000000000 RBX: ffffc90003d5f850 RCX: ffffffff81d0d2ea RDX: ffff888020050000 RSI: 800000006c12a007 RDI: ffff88802bdc0000 RBP: ffff88802bdc0000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000003 R12: dffffc0000000000 R13: ffffea0001b04a80 R14: dffffc0000000000 R15: 800000006c12a007 page_table_check_pte_clear include/linux/page_table_check.h:49 [inline] ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1302 [inline] zap_pte_range mm/memory.c:1452 [inline] zap_pmd_range mm/memory.c:1597 [inline] zap_pud_range mm/memory.c:1626 [inline] zap_p4d_range mm/memory.c:1647 [inline] unmap_page_range+0x17ff/0x2af0 mm/memory.c:1668 unmap_single_vma+0x194/0x2b0 mm/memory.c:1714 unmap_vmas+0x22f/0x490 mm/memory.c:1758 exit_mmap+0x1c1/0xb60 mm/mmap.c:3287 __mmput+0x12a/0x4d0 kernel/fork.c:1345 mmput+0x62/0x70 kernel/fork.c:1367 exit_mm kernel/exit.c:569 [inline] do_exit+0x999/0x2be0 kernel/exit.c:865 do_group_exit+0xd3/0x2a0 kernel/exit.c:1027 __do_sys_exit_group kernel/exit.c:1038 [inline] __se_sys_exit_group kernel/exit.c:1036 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036 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: 0033:0x7ff067c7de69 Code: Unable to access opcode bytes at 0x7ff067c7de3f. RSP: 002b:00007ffc14692c98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007ff067c7de69 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: 00000000000006a5 R09: 0000000000000000 R10: 0000001b31020000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: f3 0f 1e fa endbr64 6: 41 56 push %r14 8: 41 55 push %r13 a: 41 54 push %r12 c: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 13: fc ff df 16: 55 push %rbp 17: 48 89 fd mov %rdi,%rbp 1a: 53 push %rbx 1b: 48 83 ec 60 sub $0x60,%rsp 1f: 48 89 e3 mov %rsp,%rbx 22: 48 c7 04 24 b3 8a b5 movq $0x41b58ab3,(%rsp) 29: 41 * 2a: 48 c7 44 24 08 bd 91 movq $0xffffffff8d1291bd,0x8(%rsp) <-- trapping instruction 31: 12 8d 33: 48 c1 eb 03 shr $0x3,%rbx 37: 48 c7 44 24 10 10 1f movq $0xffffffff81f21f10,0x10(%rsp) 3e: f2 81