================================ WARNING: inconsistent lock state 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.1/5080 [HC1[1]:SC1[1]:HE0:SE0] takes: ffff888029e92948 (&timer->lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff888029e92948 (&timer->lock){?.+.}-{2:2}, at: class_spinlock_constructor include/linux/spinlock.h:561 [inline] ffff888029e92948 (&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: 456627 hardirqs last enabled at (456626): [] seqcount_lockdep_reader_access include/linux/seqlock.h:74 [inline] hardirqs last enabled at (456626): [] timekeeping_get_delta kernel/time/timekeeping.c:254 [inline] hardirqs last enabled at (456626): [] timekeeping_get_ns kernel/time/timekeeping.c:388 [inline] hardirqs last enabled at (456626): [] ktime_get_with_offset+0x3f0/0x530 kernel/time/timekeeping.c:891 hardirqs last disabled at (456627): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (454460): [] local_bh_enable include/linux/bottom_half.h:33 [inline] softirqs last enabled at (454460): [] fpregs_unlock arch/x86/include/asm/fpu/api.h:80 [inline] softirqs last enabled at (454460): [] fpu_clone+0x393/0xb60 arch/x86/kernel/fpu/core.c:634 softirqs last disabled at (456619): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (456619): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (456619): [] 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 syz-executor.1/5080: #0: ffff88802e028420 (sb_writers#5){.+.+}-{0:0}, at: do_unlinkat+0x1d3/0x750 fs/namei.c:4385 #1: ffff88805e5d2c00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:828 [inline] #1: ffff88805e5d2c00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x288/0x750 fs/namei.c:4389 #2: ffff88805e727200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:793 [inline] #2: ffff88805e727200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_unlink+0xd3/0x910 fs/namei.c:4327 #3: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #3: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #3: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb_list_internal+0x359/0xe30 net/core/dev.c:5758 #4: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #4: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #4: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: run_filter+0x35/0x2c0 net/packet/af_packet.c:2085 stack backtrace: CPU: 1 PID: 5080 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: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+0x43/0xb0 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:ffffc90000a08598 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff920001410b5 RCX: 00000000110053aa RDX: 0000000000000001 RSI: ffffffff8b0cba40 RDI: ffffffff8b6e88a0 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff27b4e30 R10: ffffffff93da7187 R11: 0000000000000004 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8d7b08e0 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:298 [inline] rcu_read_lock include/linux/rcupdate.h:750 [inline] run_filter+0x3b/0x2c0 net/packet/af_packet.c:2085 packet_rcv+0x356/0x1510 net/packet/af_packet.c:2161 deliver_skb net/core/dev.c:2188 [inline] deliver_ptype_list_skb net/core/dev.c:2203 [inline] __netif_receive_skb_core.constprop.0+0xe04/0x4030 net/core/dev.c:5489 __netif_receive_skb_list_core+0x357/0x950 net/core/dev.c:5614 __netif_receive_skb_list net/core/dev.c:5681 [inline] netif_receive_skb_list_internal+0x78d/0xe30 net/core/dev.c:5773 gro_normal_list include/net/gro.h:438 [inline] gro_normal_list include/net/gro.h:434 [inline] napi_complete_done+0x23f/0x9a0 net/core/dev.c:6113 virtqueue_napi_complete drivers/net/virtio_net.c:465 [inline] virtnet_poll+0xf8b/0x1840 drivers/net/virtio_net.c:2211 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6632 napi_poll net/core/dev.c:6701 [inline] net_rx_action+0x9ad/0xf10 net/core/dev.c:6813 __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 common_interrupt+0xb0/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5283 Code: a9 0a 00 00 44 8b 0d 37 d3 40 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 29 38 36 00 fb 65 48 8b 1d a0 03 a6 7e <48> 8d bb f0 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc9000377f850 EFLAGS: 00000206 RAX: 000000000006f7a9 RBX: ffff888021683c00 RCX: 1ffffffff27bc729 RDX: 0000000000000000 RSI: ffffffff8b0cb740 RDI: ffffffff8b6e88a0 RBP: ffffc9000377f898 R08: 0000000000000001 R09: fffffbfff27b4e43 R10: ffffffff93da721f R11: 0000000000000003 R12: ffff8880b953f3f8 R13: ffff88801b78bc00 R14: 0000000000000000 R15: ffff8880b953e680 context_switch kernel/sched/core.c:5412 [inline] __schedule+0xf1d/0x5c70 kernel/sched/core.c:6736 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7058 irqentry_exit+0x36/0x90 kernel/entry/common.c:348 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:ext4_fname_from_fscrypt_name+0xcf/0x220 fs/ext4/crypto.c:17 Code: 10 49 8d 7c 24 18 49 8b 44 24 08 48 89 53 10 48 89 fa 48 89 43 08 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 <74> 08 3c 03 0f 8e 01 01 00 00 48 8d 7b 18 45 8b 6c 24 18 48 b8 00 RSP: 0018:ffffc9000377fb10 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc9000377fca8 RCX: 0000000000000000 RDX: 1ffff920006eff6f RSI: 0000000000000000 RDI: ffffc9000377fb78 RBP: ffffc9000377fb28 R08: 0000000000000005 R09: 0000000000000000 R10: ffffc9000377fca8 R11: 0000000000000001 R12: ffffc9000377fb60 R13: ffff88805e454348 R14: ffffc9000377fb60 R15: dffffc0000000000 ext4_fname_setup_filename+0x112/0x260 fs/ext4/crypto.c:32 ext4_find_entry fs/ext4/namei.c:1744 [inline] __ext4_unlink+0xd5/0xcb0 fs/ext4/namei.c:3243 ext4_unlink+0x422/0x5b0 fs/ext4/namei.c:3321 vfs_unlink+0x2fb/0x910 fs/namei.c:4338 do_unlinkat+0x5c0/0x750 fs/namei.c:4402 __do_sys_unlink fs/namei.c:4450 [inline] __se_sys_unlink fs/namei.c:4448 [inline] __x64_sys_unlink+0xc7/0x110 fs/namei.c:4448 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: 0033:0x7fd15567d617 Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc3ecda628 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd15567d617 RDX: 00007ffc3ecda650 RSI: 00007ffc3ecda6e0 RDI: 00007ffc3ecda6e0 RBP: 00007ffc3ecda6e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffc3ecdb7a0 R13: 00007fd1556c93b9 R14: 000000000001a5f0 R15: 0000000000000001 ---------------- 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