EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE ------------[ 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: 6303 at kernel/locking/lockdep.c:935 look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:932 Modules linked in: CPU: 1 PID: 6303 Comm: syz-executor215 Not tainted 6.7.0-rc4-syzkaller-gd46efae31672 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:932 lr : look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:932 sp : ffff8000972671e0 x29: ffff8000972671e0 x28: dfff800000000000 x27: ffff700012e4cec0 x26: ffff800092a38740 x25: ffff800092a38000 x24: 0000000000000000 x23: ffff700012e4ce78 x22: 0000000000000000 x21: ffff800092b6c8e1 x20: ffff0000ded83e88 x19: ffff80009166cc90 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80008a82b29c x15: 0000000000000001 x14: 1fffe0003682a63a x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000002 x10: 0000000000ff0100 x9 : 7f574dcec93d5a00 x8 : 7f574dcec93d5a00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800097266ad8 x4 : ffff80008e5d1ea0 x3 : ffff8000805af654 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:932 register_lock_class+0x8c/0x6ac kernel/locking/lockdep.c:1284 __lock_acquire+0x184/0x763c kernel/locking/lockdep.c:5014 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754 down_write_nested+0x58/0xcc kernel/locking/rwsem.c:1695 ext4_double_down_write_data_sem+0x3c/0x4c swap_inode_boot_loader fs/ext4/ioctl.c:432 [inline] __ext4_ioctl fs/ext4/ioctl.c:1437 [inline] ext4_ioctl+0x49b4/0x6220 fs/ext4/ioctl.c:1627 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 6559 hardirqs last enabled at (6559): [] seqcount_lockdep_reader_access+0x80/0x104 include/linux/seqlock.h:104 hardirqs last disabled at (6558): [] seqcount_lockdep_reader_access+0x3c/0x104 include/linux/seqlock.h:101 softirqs last enabled at (6406): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (6406): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (6295): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]---