------------[ cut here ]------------
Looking for class "&ei->i_data_sem" with key init_once.__key.781, but found a different class "&ei->i_data_sem" with the same key
WARNING: CPU: 1 PID: 5779 at kernel/locking/lockdep.c:933 look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:930
Modules linked in:
CPU: 1 PID: 5779 Comm: syz.0.409 Not tainted 6.1.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:930
lr : look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:930
sp : ffff800021fb7200
x29: ffff800021fb7200 x28: dfff800000000000 x27: ffff800008eb2b98
x26: ffff80001cb727e0 x25: ffff80001cb72000 x24: 0000000000000000
x23: 0000000000000000 x22: 0000000000000000 x21: ffff80001cd07621
x20: ffff0000e1b466d8 x19: ffff8000186c0700 x18: 1fffe000367a3376
x17: 0000000000000000 x16: ffff800012290d3c x15: 0000000000000002
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000040000
x11: 0000000000008865 x10: ffff80002209a000 x9 : 30666770f7fcae00
x8 : 30666770f7fcae00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800021fb6af8 x4 : ffff800015ab3880 x3 : ffff80000858aa54
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:930
 register_lock_class+0x90/0x6a8 kernel/locking/lockdep.c:1282
 __lock_acquire+0x184/0x7680 kernel/locking/lockdep.c:4928
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662
 down_write_nested+0x64/0x94 kernel/locking/rwsem.c:1689
 ext4_double_down_write_data_sem+0x3c/0x4c
 swap_inode_boot_loader fs/ext4/ioctl.c:426 [inline]
 __ext4_ioctl fs/ext4/ioctl.c:1424 [inline]
 ext4_ioctl+0x4e78/0x6afc fs/ext4/ioctl.c:1614
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 4815
hardirqs last  enabled at (4815): [<ffff80001237265c>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (4815): [<ffff80001237265c>] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
hardirqs last disabled at (4814): [<ffff800012372478>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (4814): [<ffff800012372478>] _raw_spin_lock_irqsave+0xa4/0xb4 kernel/locking/spinlock.c:162
softirqs last  enabled at (4658): [<ffff800008032978>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (4656): [<ffff800008032944>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---