BTRFS info (device loop0): enabling ssd optimizations
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 11102 Comm: syz.0.865 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1810/0x6610 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 btrfs_update_root_times+0xa0/0x258 fs/btrfs/root-tree.c:475
 btrfs_update_inode+0x124/0x2b0 fs/btrfs/inode.c:4272
 btrfs_dirty_inode+0xe4/0x1b8 fs/btrfs/inode.c:6291
 btrfs_update_time+0x170/0x18c fs/btrfs/inode.c:6329
 inode_update_time fs/inode.c:1958 [inline]
 __file_update_time+0xc4/0x220 fs/inode.c:2147
 file_modified_flags+0x2d8/0x38c fs/inode.c:2220
 file_modified+0x24/0x34 fs/inode.c:2236
 btrfs_fallocate+0x4a4/0x174c fs/btrfs/file.c:3112
 vfs_fallocate+0x4a4/0x5fc fs/open.c:323
 ksys_fallocate fs/open.c:346 [inline]
 __do_sys_fallocate fs/open.c:354 [inline]
 __se_sys_fallocate fs/open.c:352 [inline]
 __arm64_sys_fallocate+0xc4/0x114 fs/open.c:352
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585