------------[ 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: 6909 at kernel/locking/lockdep.c:935 look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:932 Modules linked in: CPU: 1 PID: 6909 Comm: syz-executor.1 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 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 : ffff8000a9cb6fe0 x29: ffff8000a9cb6fe0 x28: dfff800000000000 x27: ffff700015396e80 x26: ffff8000936d9580 x25: ffff8000936d9000 x24: 0000000000000000 x23: ffff700015396e38 x22: 0000000000000000 x21: ffff800093738df0 x20: fffffdffbf764ad0 x19: ffff8000922cf400 x18: 0000000000000008 x17: 202c79656b5f5f2e x16: ffff80008ae89e3c x15: 0000000000000001 x14: 1fffe000367bd202 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 00000000000114f7 x9 : bc0875f33782dc00 x8 : bc0875f33782dc00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a9cb6758 x4 : ffff80008ef95100 x3 : ffff8000805e61b0 x2 : 0000000000000001 x1 : 0000000100000001 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+0x248/0x73c kernel/locking/lockdep.c:5754 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:29 ___slab_alloc+0xbdc/0xeb0 mm/slub.c:3569 __slab_alloc mm/slub.c:3610 [inline] __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] kmem_cache_alloc+0x2d4/0x3c0 mm/slub.c:3852 kmem_cache_zalloc include/linux/slab.h:739 [inline] ext4_mb_add_groupinfo+0x5b8/0xdc4 fs/ext4/mballoc.c:3343 ext4_mb_init_backend fs/ext4/mballoc.c:3422 [inline] ext4_mb_init+0xf18/0x1d20 fs/ext4/mballoc.c:3719 __ext4_fill_super fs/ext4/super.c:5522 [inline] ext4_fill_super+0x4ba4/0x5854 fs/ext4/super.c:5699 get_tree_bdev+0x320/0x470 fs/super.c:1614 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5731 vfs_get_tree+0x90/0x288 fs/super.c:1779 do_new_mount+0x278/0x900 fs/namespace.c:3352 path_mount+0x590/0xe04 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 2724 hardirqs last enabled at (2723): [] seqcount_lockdep_reader_access+0x6c/0xd4 include/linux/seqlock.h:74 hardirqs last disabled at (2724): [] ___slab_alloc+0xbb0/0xeb0 mm/slub.c:3569 softirqs last enabled at (2008): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (2006): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- EXT4-fs (loop1): Cannot turn on journaled quota: type 0: error -2 EXT4-fs (loop1): Cannot turn on journaled quota: type 1: error -2 EXT4-fs (loop1): 1 truncate cleaned up EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop1: detected capacity change from 0 to 32768 BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz-executor.1 (6909) BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf BTRFS info (device loop1): using crc32c (crc32c-generic) checksum algorithm BTRFS info (device loop1): using free-space-tree