------------[ cut here ]------------
Looking for class "c->lock" with key init_kmem_cache_cpus.__key, but found a different class "&c->lock" with the same key
WARNING: CPU: 0 PID: 7107 at kernel/locking/lockdep.c:941 look_up_lock_class+0xec/0x160 kernel/locking/lockdep.c:938
Modules linked in:
CPU: 0 UID: 0 PID: 7107 Comm: syz.0.131 Not tainted 6.14.0-rc1-syzkaller-g2014c95afece #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : look_up_lock_class+0xec/0x160 kernel/locking/lockdep.c:938
lr : look_up_lock_class+0xec/0x160 kernel/locking/lockdep.c:938
sp : ffff80009ea46ec0
x29: ffff80009ea46ec0 x28: dfff800000000000 x27: 0000000000000000
x26: ffff800097786900 x25: ffff800097786000 x24: 0000000000000001
x23: 0000000000000000 x22: 1ffff00011f7a0cb x21: ffff8000977e76e0
x20: fffffdffbf6e2540 x19: ffff800093259528 x18: 0000000000000008
x17: 2c79656b5f5f2e73 x16: ffff8000832d977c x15: 0000000000000001
x14: 1fffe000366f1cf2 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000000c960 x9 : 1f2b1a6daec9aa00
x8 : 1f2b1a6daec9aa00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009ea46678 x4 : ffff80008fcbefc0 x3 : ffff800080743078
x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000
Call trace:
 look_up_lock_class+0xec/0x160 kernel/locking/lockdep.c:938 (P)
 register_lock_class+0x8c/0x6b4 kernel/locking/lockdep.c:1292
 __lock_acquire+0x18c/0x7904 kernel/locking/lockdep.c:5103
 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851
 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:29
 ___slab_alloc+0xcd0/0xf4c mm/slub.c:3875
 __slab_alloc+0x74/0xd0 mm/slub.c:3916
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 kmem_cache_alloc_noprof+0x300/0x410 mm/slub.c:4171
 ext4_mb_add_groupinfo+0x5d8/0xd00 fs/ext4/mballoc.c:3356
 ext4_mb_init_backend fs/ext4/mballoc.c:3435 [inline]
 ext4_mb_init+0xfa8/0x1e38 fs/ext4/mballoc.c:3733
 __ext4_fill_super fs/ext4/super.c:5551 [inline]
 ext4_fill_super+0x4608/0x5260 fs/ext4/super.c:5722
 get_tree_bdev_flags+0x38c/0x494 fs/super.c:1636
 get_tree_bdev+0x2c/0x3c fs/super.c:1659
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5754
 vfs_get_tree+0x90/0x28c fs/super.c:1814
 do_new_mount+0x278/0x900 fs/namespace.c:3560
 path_mount+0x590/0xe04 fs/namespace.c:3887
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount fs/namespace.c:4088 [inline]
 __arm64_sys_mount+0x4d8/0x5ac fs/namespace.c:4088
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 3448
hardirqs last  enabled at (3447): [<ffff800080b3ce60>] seqcount_lockdep_reader_access+0x6c/0xd4 include/linux/seqlock.h:74
hardirqs last disabled at (3448): [<ffff800080b5b30c>] ___slab_alloc+0xca4/0xf4c mm/slub.c:3875
softirqs last  enabled at (3394): [<ffff8000803133e0>] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last  enabled at (3394): [<ffff8000803133e0>] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589
softirqs last disabled at (3267): [<ffff800080020db4>] __do_softirq+0x14/0x20 kernel/softirq.c:595
---[ end trace 0000000000000000 ]---
EXT4-fs (loop0): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none.