loop1: detected capacity change from 0 to 2048
------------[ 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: 1 PID: 7386 at kernel/locking/lockdep.c:939 look_up_lock_class+0xec/0x160 kernel/locking/lockdep.c:936
Modules linked in:
CPU: 1 UID: 0 PID: 7386 Comm: syz.1.233 Tainted: G        W          6.13.0-rc6-syzkaller-g577490b6abb9 #0
Tainted: [W]=WARN
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/0x160 kernel/locking/lockdep.c:936
lr : look_up_lock_class+0xec/0x160 kernel/locking/lockdep.c:936
sp : ffff8000a1866e80
x29: ffff8000a1866e80 x28: dfff800000000000 x27: 0000000000000000
x26: ffff8000974ce900 x25: ffff8000974ce000 x24: 0000000000000001
x23: 0000000000000000 x22: 1ffff00011f320ca x21: ffff80009752f700
x20: fffffdffbf70d300 x19: ffff800092fa1528 x18: 0000000000000008
x17: 202c79656b5f5f2e x16: ffff8000832776d4 x15: 0000000000000001
x14: 1fffe000367012ea x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000000def9 x9 : 11c6e8d2dd3fa300
x8 : 11c6e8d2dd3fa300 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000a18665b8 x4 : ffff80008fa80460 x3 : ffff80008073e590
x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000
Call trace:
 look_up_lock_class+0xec/0x160 kernel/locking/lockdep.c:936 (P)
 register_lock_class+0x8c/0x6b4 kernel/locking/lockdep.c:1290
 __lock_acquire+0x18c/0x7904 kernel/locking/lockdep.c:5101
 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849
 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:29
 ___slab_alloc+0xcd0/0xf4c mm/slub.c:3879
 __slab_alloc+0x74/0xd0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 kmem_cache_alloc_noprof+0x300/0x410 mm/slub.c:4175
 ext4_mb_add_groupinfo+0x5d8/0xdf4 fs/ext4/mballoc.c:3356
 ext4_mb_init_backend fs/ext4/mballoc.c:3435 [inline]
 ext4_mb_init+0x107c/0x2014 fs/ext4/mballoc.c:3733
 __ext4_fill_super fs/ext4/super.c:5559 [inline]
 ext4_fill_super+0x4b50/0x57d0 fs/ext4/super.c:5733
 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:5765
 vfs_get_tree+0x90/0x28c fs/super.c:1814
 do_new_mount+0x278/0x900 fs/namespace.c:3507
 path_mount+0x590/0xe04 fs/namespace.c:3834
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount fs/namespace.c:4034 [inline]
 __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034
 __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: 4804
hardirqs last  enabled at (4803): [<ffff800080b32f14>] seqcount_lockdep_reader_access+0x6c/0xd4 include/linux/seqlock.h:74
hardirqs last disabled at (4804): [<ffff800080b522d0>] ___slab_alloc+0xca4/0xf4c mm/slub.c:3879
softirqs last  enabled at (4114): [<ffff800080129934>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (4112): [<ffff800080129900>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.