EXT4-fs (loop7): VFS: Can't find ext4 filesystem
------------[ cut here ]------------
WARNING: CPU: 0 PID: 40317 at kernel/events/core.c:1978 perf_group_attach+0x396/0x450 kernel/events/core.c:1978
Modules linked in:
CPU: 0 PID: 40317 Comm: syz-executor.3 Not tainted 5.10.60 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:perf_group_attach+0x396/0x450 kernel/events/core.c:1978
Code: 48 c1 e8 03 42 80 3c 20 00 75 5f 48 8b 5b 10 48 83 eb 10 48 39 dd 75 d4 5b 5d 41 5c 41 5d 41 5e e9 0f fd f2 ff e8 0a fd f2 ff <0f> 0b e9 b1 fd ff ff 48 c7 c7 3c 3b 47 85 e8 d7 ec 1d 00 e9 b9 fc
RSP: 0018:ffff88806ce09ef0 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff8880463c9000 RCX: ffffffff814c5edf
RDX: ffff8880545fe500 RSI: ffffffff814c61a6 RDI: ffff8880463c9220
RBP: ffff8880096a6000 R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888043908400
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88806ce37748
FS:  0000000002146400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa1c10f0ae0 CR3: 0000000050484000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 add_event_to_ctx kernel/events/core.c:2673 [inline]
 __perf_install_in_context+0x246/0x2d0 kernel/events/core.c:2824
 remote_function kernel/events/core.c:88 [inline]
 remote_function+0x126/0x1b0 kernel/events/core.c:68
 flush_smp_call_function_queue+0x1b8/0x5e0 kernel/smp.c:395
 __sysvec_call_function_single+0x92/0x370 arch/x86/kernel/smp.c:248
 asm_call_irq_on_stack+0x12/0x20
 </IRQ>
 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline]
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline]
 sysvec_call_function_single+0x7f/0xa0 arch/x86/kernel/smp.c:243
 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:643
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:79 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:120 [inline]
RIP: 0010:lock_is_held_type+0x51/0x100 kernel/locking/lockdep.c:5595
Code: 41 55 41 54 55 53 65 4c 8b 24 25 80 ef 01 00 48 83 ec 08 41 8b 94 24 ac 08 00 00 85 d2 0f 85 86 00 00 00 48 89 fd 41 89 f6 9c <8f> 04 24 fa 41 8b 84 24 a8 08 00 00 4d 8d ac 24 b0 08 00 00 31 db
RSP: 0018:ffff88804cb7fe98 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880545fe500 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff888052783558
RBP: ffff888052783558 R08: 0000000000000001 R09: 0000000000000003
R10: ffffed100996ffce R11: 0000000000000001 R12: ffff8880545fe500
R13: ffff888009991680 R14: 00000000ffffffff R15: 0000000000000000
 lock_is_held include/linux/lockdep.h:271 [inline]
 pick_file+0x56/0x1e0 fs/file.c:646
 __close_fd+0x17/0x50 fs/file.c:667
 __do_sys_close fs/open.c:1307 [inline]
 __se_sys_close fs/open.c:1305 [inline]
 __x64_sys_close+0x68/0x100 fs/open.c:1305
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4193eb
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffedfd4ff70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00000000004193eb
RDX: ffffffffffffffbc RSI: 0000000000000081 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000970000 R11: 0000000000000293 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffedfd50060
irq event stamp: 3490
hardirqs last  enabled at (3489): [<ffffffff83d84ccd>] syscall_enter_from_user_mode+0x1d/0x50 kernel/entry/common.c:98
hardirqs last disabled at (3490): [<ffffffff83d83beb>] sysvec_call_function_single+0xb/0xa0 arch/x86/kernel/smp.c:243
softirqs last  enabled at (3220): [<ffffffff83e00f92>] asm_call_irq_on_stack+0x12/0x20
softirqs last disabled at (3209): [<ffffffff83e00f92>] asm_call_irq_on_stack+0x12/0x20
---[ end trace 4644042c81dbba6b ]---

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