BTRFS info (device loop1): auto enabling async discard BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 PID: 9192 Comm: syz-executor.1 Not tainted 6.6.0-rc4-syzkaller-g19af4a4ed414 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 lookup_chain_cache_add kernel/locking/lockdep.c:3815 [inline] validate_chain kernel/locking/lockdep.c:3836 [inline] __lock_acquire+0x1c60/0x75e8 kernel/locking/lockdep.c:5136 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753 do_write_seqcount_begin_nested include/linux/seqlock.h:515 [inline] do_write_seqcount_begin include/linux/seqlock.h:541 [inline] psi_account_irqtime+0x298/0x768 kernel/sched/psi.c:1024 update_rq_clock_task kernel/sched/core.c:725 [inline] update_rq_clock+0x1b8/0x634 kernel/sched/core.c:769 ttwu_queue kernel/sched/core.c:4028 [inline] try_to_wake_up+0x4e4/0xe80 kernel/sched/core.c:4346 wake_up_process+0x18/0x24 kernel/sched/core.c:4478 kick_pool+0x29c/0x36c kernel/workqueue.c:1142 __queue_work+0xcfc/0x1338 kernel/workqueue.c:1800 __queue_delayed_work kernel/workqueue.c:1950 [inline] mod_delayed_work_on+0x22c/0x360 kernel/workqueue.c:2024 kblockd_mod_delayed_work_on+0x3c/0x54 block/blk-core.c:1038 blk_mq_delay_run_hw_queue+0x3fc/0x4e4 block/blk-mq.c:2219 blk_mq_run_hw_queue+0x648/0x97c block/blk-mq.c:2260 blk_mq_flush_plug_list+0x1410/0x17e8 block/blk-mq.c:2817 __blk_flush_plug+0x388/0x408 block/blk-core.c:1142 blk_flush_plug include/linux/blkdev.h:995 [inline] sched_submit_work kernel/sched/core.c:6751 [inline] schedule+0xa4/0x170 kernel/sched/core.c:6768 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6830 rwsem_down_write_slowpath+0xcfc/0x1aa0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write_nested+0xc0/0xcc kernel/locking/rwsem.c:1690 __btrfs_tree_lock+0x44/0x3ac fs/btrfs/locking.c:198 btrfs_tree_lock+0x24/0x34 fs/btrfs/locking.c:205 lock_extent_buffer_for_io+0x54/0x3dc fs/btrfs/extent_io.c:1483 submit_eb_page fs/btrfs/extent_io.c:1851 [inline] btree_write_cache_pages+0xc08/0x10c4 fs/btrfs/extent_io.c:1911 btree_writepages+0x6c/0x190 fs/btrfs/disk-io.c:492 do_writepages+0x2e8/0x570 mm/page-writeback.c:2553 filemap_fdatawrite_wbc+0x124/0x174 mm/filemap.c:390 __filemap_fdatawrite_range mm/filemap.c:423 [inline] filemap_fdatawrite_range+0x150/0x1c0 mm/filemap.c:441 btrfs_write_marked_extents+0x228/0x3b4 fs/btrfs/transaction.c:1111 btrfs_write_and_wait_transaction+0xf0/0x200 fs/btrfs/transaction.c:1222 btrfs_commit_transaction+0x1a9c/0x2dd4 fs/btrfs/transaction.c:2509 btrfs_sync_file+0xbe0/0x10c8 fs/btrfs/file.c:2001 vfs_fsync_range+0x168/0x188 fs/sync.c:188 generic_write_sync include/linux/fs.h:2584 [inline] btrfs_do_write_iter+0x938/0xd40 fs/btrfs/file.c:1690 btrfs_file_write_iter+0x2c/0x3c fs/btrfs/file.c:1700 do_iter_write+0x65c/0xaa8 fs/read_write.c:860 vfs_iter_write+0x88/0xac fs/read_write.c:901 iter_file_splice_write+0x628/0xc58 fs/splice.c:736 do_splice_from fs/splice.c:933 [inline] direct_splice_actor+0xe4/0x1c0 fs/splice.c:1142 splice_direct_to_actor+0x2a0/0x7e4 fs/splice.c:1088 do_splice_direct+0x20c/0x348 fs/splice.c:1194 do_sendfile+0x4b8/0xcc4 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __arm64_sys_sendfile64+0x160/0x3b4 fs/read_write.c:1308 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595