loop0: detected capacity change from 0 to 512 ext4 filesystem being mounted at /root/syzkaller-testdir1943682455/syzkaller.VLfbd4/32/bus supports timestamps until 2038-01-19 (0x7fffffff) ------------[ cut here ]------------ Looking for class "&ei->i_data_sem" with key __key.0, but found a different class "&ei->i_data_sem" with the same key WARNING: CPU: 0 PID: 5806 at kernel/locking/lockdep.c:938 look_up_lock_class+0xac/0x130 kernel/locking/lockdep.c:938 Modules linked in: CPU: 0 PID: 5806 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 RIP: 0010:look_up_lock_class+0xac/0x130 kernel/locking/lockdep.c:938 Code: 39 48 8b 55 00 48 81 fa 20 f8 14 90 74 2c 80 3d 48 5b 55 04 00 75 23 48 c7 c7 a0 5c 4c 8a c6 05 38 5b 55 04 01 e8 64 e8 3c f7 <0f> 0b eb 0c e8 3b d5 00 fa 85 c0 75 48 45 31 e4 48 83 c4 08 4c 89 RSP: 0018:ffffc90005bbf578 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffffffff91efa6e1 RCX: 0000000000000000 RDX: ffff888021221dc0 RSI: ffffffff814c03c7 RDI: 0000000000000001 RBP: ffff888073e9f088 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff915859e0 R13: 0000000000000001 R14: ffff888073e9f088 R15: 0000000000000001 FS: 00007f0f20a71700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000e000 CR3: 0000000024595000 CR4: 0000000000350ef0 Call Trace: register_lock_class+0xbe/0x1120 kernel/locking/lockdep.c:1290 __lock_acquire+0x10d/0x5f30 kernel/locking/lockdep.c:4965 lock_acquire kernel/locking/lockdep.c:5705 [inline] lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670 down_write_nested+0x96/0x200 kernel/locking/rwsem.c:1689 ext4_double_down_write_data_sem fs/ext4/move_extent.c:58 [inline] ext4_move_extents+0x970/0x37f0 fs/ext4/move_extent.c:621 __ext4_ioctl+0x3dae/0x4b00 fs/ext4/ioctl.c:1352 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0f1fc8c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0f20a71168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0f1fdabf80 RCX: 00007f0f1fc8c389 RDX: 00000000200000c0 RSI: 00000000c028660f RDI: 0000000000000004 RBP: 00007f0f1fcd7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd1ed27c2f R14: 00007f0f20a71300 R15: 0000000000022000