BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 4166 Comm: kworker/u4:6 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: loop4 loop_workfn
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __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:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b30/0x651c kernel/locking/lockdep.c:5012
 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623
 local_lock_acquire+0x4c/0x19c include/linux/local_lock_internal.h:29
 activate_page mm/swap.c:334 [inline]
 mark_page_accessed+0x78c/0x1190 mm/swap.c:422
 shmem_file_read_iter+0x47c/0x6f8 mm/shmem.c:2610
 do_iter_readv_writev+0x3a0/0x4f8 fs/read_write.c:-1
 do_iter_read+0x1d4/0x698 fs/read_write.c:790
 vfs_iter_read+0x88/0xac fs/read_write.c:832
 lo_read_simple drivers/block/loop.c:392 [inline]
 do_req_filebacked drivers/block/loop.c:663 [inline]
 loop_handle_cmd drivers/block/loop.c:2235 [inline]
 loop_process_work+0x1648/0x20d0 drivers/block/loop.c:2275
 loop_workfn+0x50/0x64 drivers/block/loop.c:2299
 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310
 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457
 kthread+0x374/0x454 kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870