BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 8845 Comm: syz.3.335 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 stack_depot_save_flags+0x1f4/0x6dc lib/stackdepot.c:690 kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x54/0x78 mm/kasan/common.c:77 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:573 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4978 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_noprof+0x338/0x648 mm/slub.c:5295 alloc_extent_state+0x38/0x374 fs/btrfs/extent-io-tree.c:154 btrfs_convert_extent_bit+0x1a0/0x159c fs/btrfs/extent-io-tree.c:1344 btrfs_write_marked_extents+0x130/0x28c fs/btrfs/transaction.c:1136 btrfs_write_and_wait_transaction+0xdc/0x1e8 fs/btrfs/transaction.c:1264 btrfs_commit_transaction+0x19fc/0x2ce4 fs/btrfs/transaction.c:2533 btrfs_commit_current_transaction+0xac/0xdc fs/btrfs/transaction.c:2010 try_flush_qgroup+0x154/0x330 fs/btrfs/qgroup.c:4191 btrfs_qgroup_reserve_data+0x7c/0xd8 fs/btrfs/qgroup.c:4273 btrfs_check_data_free_space+0x244/0x38c fs/btrfs/delalloc-space.c:164 btrfs_truncate_block+0x2e4/0x139c fs/btrfs/inode.c:4948 btrfs_cont_expand+0x104/0xb20 fs/btrfs/inode.c:5153 btrfs_write_check+0x218/0x2ec fs/btrfs/file.c:1086 btrfs_buffered_write+0x15c/0x122c fs/btrfs/file.c:1382 btrfs_do_write_iter+0x1d0/0x5dc fs/btrfs/file.c:1462 btrfs_file_write_iter+0x2c/0x3c fs/btrfs/file.c:1479 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_pwrite64 fs/read_write.c:793 [inline] __do_sys_pwrite64 fs/read_write.c:801 [inline] __se_sys_pwrite64 fs/read_write.c:798 [inline] __arm64_sys_pwrite64+0x170/0x208 fs/read_write.c:798 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596