BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 25729 Comm: kworker/u4:34 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: loop2 loop_rootcg_workfn
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
 lookup_chain_cache_add kernel/locking/lockdep.c:3736 [inline]
 validate_chain+0x7e8/0x8240 kernel/locking/lockdep.c:3757
 __lock_acquire+0x1382/0x2b00 kernel/locking/lockdep.c:5015
 lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5625
 seqcount_lockdep_reader_access+0x147/0x230 include/linux/seqlock.h:104
 ktime_get_coarse_real_ts64+0x45/0x140 kernel/time/timekeeping.c:2241
 current_time+0x86/0x2f0 fs/inode.c:2317
 atime_needs_update+0x269/0x590 fs/inode.c:1825
 touch_atime+0xe4/0x650 fs/inode.c:1842
 file_accessed include/linux/fs.h:2504 [inline]
 shmem_file_read_iter+0x962/0xc30 mm/shmem.c:2614
 do_iter_readv_writev+0x54f/0x740
 do_iter_read+0x206/0x780 fs/read_write.c:790
 lo_read_simple drivers/block/loop.c:404 [inline]
 do_req_filebacked drivers/block/loop.c:675 [inline]
 loop_handle_cmd drivers/block/loop.c:2201 [inline]
 loop_process_work+0x1bc8/0x2d40 drivers/block/loop.c:2241
 process_one_work+0x853/0x1140 kernel/workqueue.c:2297
 worker_thread+0xac1/0x1320 kernel/workqueue.c:2444
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30