BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 6506 Comm: syz.1.358 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 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+0xf8/0x160 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+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 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]
 __find_get_block_slow fs/buffer.c:206 [inline]
 __find_get_block+0x294/0xdfc fs/buffer.c:1307
 __getblk_gfp+0x48/0x7fc fs/buffer.c:1329
 sb_getblk include/linux/buffer_head.h:356 [inline]
 ext4_getblk+0x1f8/0x654 fs/ext4/inode.c:900
 ext4_bread+0x3c/0x1b0 fs/ext4/inode.c:946
 ext4_quota_write+0x228/0x51c fs/ext4/super.c:7203
 qtree_write_dquot+0x1e0/0x4c8 fs/quota/quota_tree.c:462
 v2_write_dquot+0xf0/0x180 fs/quota/quota_v2.c:361
 dquot_commit+0x128/0x1c4 fs/quota/dquot.c:514
 ext4_write_dquot+0x1b4/0x31c fs/ext4/super.c:6792
 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6869
 mark_dquot_dirty fs/quota/dquot.c:372 [inline]
 do_set_dqblk fs/quota/dquot.c:2822 [inline]
 dquot_set_dqblk+0xaf0/0xe50 fs/quota/dquot.c:2838
 quota_setquota+0x400/0x490 fs/quota/quota.c:310
 do_quotactl+0x65c/0x738 fs/quota/quota.c:802
 __do_sys_quotactl fs/quota/quota.c:960 [inline]
 __se_sys_quotactl fs/quota/quota.c:916 [inline]
 __arm64_sys_quotactl+0x2ac/0x730 fs/quota/quota.c:916
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 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