erofs (device loop2): failed to decompress -26 in[46, 0] out[9000] BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 6524 Comm: kworker/u9:3 Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: erofs_worker z_erofs_decompressqueue_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:501 (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:3858 [inline] validate_chain kernel/locking/lockdep.c:3879 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5240 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 down_trylock+0x28/0xd8 kernel/locking/semaphore.c:176 __down_trylock_console_sem+0x58/0xf8 kernel/printk/printk.c:326 console_trylock kernel/printk/printk.c:2868 [inline] console_trylock_spinning+0xc8/0x3b0 kernel/printk/printk.c:2009 vprintk_emit+0x27c/0x430 kernel/printk/printk.c:2449 vprintk_default+0x54/0x80 kernel/printk/printk.c:2465 vprintk+0x90/0x128 kernel/printk/printk_safe.c:82 _printk+0xd0/0x118 kernel/printk/printk.c:2475 _erofs_printk+0x2ec/0x398 fs/erofs/super.c:33 z_erofs_lz4_decompress_mem fs/erofs/decompressor.c:231 [inline] z_erofs_lz4_decompress+0x1160/0x1684 fs/erofs/decompressor.c:280 z_erofs_decompress_pcluster fs/erofs/zdata.c:1308 [inline] z_erofs_decompress_queue+0x11b4/0x2428 fs/erofs/zdata.c:1409 z_erofs_decompressqueue_work+0x84/0xd4 fs/erofs/zdata.c:1421 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847