loop3: detected capacity change from 0 to 512
------------[ cut here ]------------
Looking for class "->lock" with key init_kmem_cache_cpus.__key, but found a different class "&c->lock" with the same key
WARNING: CPU: 0 PID: 6041 at kernel/locking/lockdep.c:941 look_up_lock_class+0xdc/0x170 kernel/locking/lockdep.c:938
Modules linked in:
CPU: 0 UID: 0 PID: 6041 Comm: syz.3.30 Not tainted 6.14.0-rc3-syzkaller-00060-g6537cfb395f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:look_up_lock_class+0xdc/0x170 kernel/locking/lockdep.c:938
Code: 01 0f 85 8a 00 00 00 c6 05 56 61 25 04 01 90 49 8b 16 49 8b 76 18 48 8b 8b b8 00 00 00 48 c7 c7 20 c6 2a 8c e8 25 07 81 f5 90 <0f> 0b 90 90 eb 61 90 e8 d8 62 e9 f8 e8 73 04 a1 f5 48 c7 c7 60 c5
RSP: 0018:ffffc900053af370 EFLAGS: 00010046
RAX: 2dd63823c63c2b00 RBX: ffffffff93e8b960 RCX: 0000000000080000
RDX: ffffc9000d1d9000 RSI: 0000000000009f80 RDI: 0000000000009f81
RBP: ffffc900053af480 R08: ffffffff81817d42 R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: ffffe8ffffc7b130
R13: ffffe8ffffc7b130 R14: ffffe8ffffc7b130 R15: ffffffff9a6742c0
FS:  00007f12a12696c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f932e95b000 CR3: 000000007ecd6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 register_lock_class+0x102/0x980 kernel/locking/lockdep.c:1292
 __lock_acquire+0xf3/0x2100 kernel/locking/lockdep.c:5103
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 local_lock_acquire+0x20/0x80 include/linux/local_lock_internal.h:29
 ___slab_alloc+0x119d/0x14a0 mm/slub.c:3875
 __slab_alloc+0x58/0xa0 mm/slub.c:3916
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 kmem_cache_alloc_noprof+0x268/0x380 mm/slub.c:4171
 ext4_mb_add_groupinfo+0x6bf/0xe70 fs/ext4/mballoc.c:3356
 ext4_mb_init_backend fs/ext4/mballoc.c:3435 [inline]
 ext4_mb_init+0x17f4/0x2870 fs/ext4/mballoc.c:3733
 __ext4_fill_super fs/ext4/super.c:5551 [inline]
 ext4_fill_super+0x57b9/0x6480 fs/ext4/super.c:5722
 get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3560
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12a038e58a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f12a1268e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f12a1268ef0 RCX: 00007f12a038e58a
RDX: 00004000000004c0 RSI: 0000400000000500 RDI: 00007f12a1268eb0
RBP: 00004000000004c0 R08: 00007f12a1268ef0 R09: 0000000000000008
R10: 0000000000000008 R11: 0000000000000246 R12: 0000400000000500
R13: 00007f12a1268eb0 R14: 0000000000000511 R15: 0000400000000080
 </TASK>