------------[ cut here ]------------ WARNING: CPU: 0 PID: 27099 at kernel/locking/lockdep.c:894 look_up_lock_class+0x86/0x110 kernel/locking/lockdep.c:894 Modules linked in: CPU: 0 PID: 27099 Comm: syz-executor.3 Not tainted 5.10.221 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:look_up_lock_class+0x86/0x110 kernel/locking/lockdep.c:894 Code: 24 e8 ce 02 00 00 4d 85 e4 74 2c 49 39 5c 24 40 75 eb 48 8b 45 18 49 39 84 24 b0 00 00 00 74 1a 48 81 7d 00 00 22 15 86 74 10 <0f> 0b eb 0c e8 41 59 0a fe 85 c0 75 50 45 31 e4 48 83 c4 08 4c 89 RSP: 0018:ffff88805508f808 EFLAGS: 00010002 RAX: ffffffff84535860 RBX: ffffffff871b9521 RCX: 0000000000000000 RDX: 0000000000000046 RSI: 0000000000000001 RDI: ffff888054414760 RBP: ffff888054414760 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000246 R11: 0000000000000001 R12: ffffffff868b2fc0 R13: ffffffff86bf59e0 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f6860fa1700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cf22000 CR3: 00000000589b4000 CR4: 0000000000350ef0 Call Trace: register_lock_class+0xbb/0x17b0 kernel/locking/lockdep.c:1244 __lock_acquire+0x102/0x5b00 kernel/locking/lockdep.c:4834 lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 down_write_nested+0x96/0x160 kernel/locking/rwsem.c:1667 ext4_double_down_write_data_sem+0x63/0x70 fs/ext4/move_extent.c:58 swap_inode_boot_loader fs/ext4/ioctl.c:172 [inline] __ext4_ioctl+0x16e7/0x4190 fs/ext4/ioctl.c:1065 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f6863a2bb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6860fa1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6863b3ef60 RCX: 00007f6863a2bb19 RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000005 RBP: 00007f6863a85f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb2efed6f R14: 00007f6860fa1300 R15: 0000000000022000 irq event stamp: 341 hardirqs last enabled at (341): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (341): [] _raw_spin_unlock_irqrestore+0x38/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (340): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (340): [] _raw_spin_lock_irqsave+0x4f/0x60 kernel/locking/spinlock.c:159 softirqs last enabled at (196): [] fpu__clear+0xd6/0x200 arch/x86/kernel/fpu/core.c:364 softirqs last disabled at (194): [] fpu__clear+0x2a/0x200 arch/x86/kernel/fpu/core.c:349 ---[ end trace 92df2ab0717266af ]--- FAT-fs (loop6): bogus number of reserved sectors FAT-fs (loop6): Can't find a valid FAT filesystem