BUG: MAX_LOCK_DEPTH too low! turning off the locking correctness validator. depth: 48 max: 48! 48 locks held by syz.4.66/6862: #0: ffff0000c43f4420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:409 #1: ffff0000f01ab528 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline] #1: ffff0000f01ab528 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63 #2: ffff0000efa80ab8 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x134/0x274 fs/bcachefs/io_misc.c:290 #3: ffff0000efa842d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:115 #4: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #5: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #5: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #6: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #6: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #7: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #7: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #8: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #8: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #9: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #9: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #10: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #10: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #11: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #11: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #12: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #12: ffff0000c96c7070 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #13: ffff0000f0154de0 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #14: ffff0000f0154320 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #15: ffff0000f0154070 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #16: ffff0000f0154b30 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #17: ffff0000f01558a0 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #18: ffff0000f0154478 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #19: ffff0000f0155498 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #20: ffff0000f0155340 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #21: ffff0000c9031070 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #22: ffff0000c9032870 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #23: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #24: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #25: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #26: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #27: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #28: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: six_trylock_type+0x1c/0x4c fs/bcachefs/six.h:206 #29: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #30: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #30: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #31: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #31: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #32: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #32: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #33: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #33: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #34: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #34: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #35: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: btree_node_lock_increment fs/bcachefs/btree_locking.h:248 [inline] #35: ffff0000c9206870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_node_relock+0x6a0/0xa94 fs/bcachefs/btree_locking.c:509 #36: ffff0000c9201870 (&dev->mutex){....}-{3:3}, at: six_relock_type+0x24/0x5c fs/bcachefs/six.h:288 #37: ffff0000efaa6750 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x590/0x15a0 fs/bcachefs/btree_update_interior.c:1195 #38: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline] #38: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline] #38: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_path_make_mut+0x1b8/0x508 fs/bcachefs/btree_iter.c:1249 #39: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline] #39: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline] #39: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_path_make_mut+0x1b8/0x508 fs/bcachefs/btree_iter.c:1249 #40: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: btree_path_copy fs/bcachefs/btree_iter.c:1228 [inline] #40: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: btree_path_clone fs/bcachefs/btree_iter.c:1236 [inline] #40: ffff0000c9033870 (&dev->mutex){....}-{3:3}, at: __bch2_btree_path_make_mut+0x1b8/0x508 fs/bcachefs/btree_iter.c:1249 #41: ffff0000f00cf340 (&dev->mutex){....}-{3:3}, at: six_trylock_intent+0x18/0x48 fs/bcachefs/six.h:366 #42: ffff0000c9200870 (&dev->mutex){....}-{3:3}, at: btree_node_lock_nopath_nofail+0x28/0x164 fs/bcachefs/btree_locking.h:227 #43: ffff0000c9200870 (&dev->mutex){....}-{3:3}, at: btree_split+0x1618/0x4c84 fs/bcachefs/btree_update_interior.c:1674 #44: ffff80008f4b7be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:328 #45: ffff0001b3d34bb8 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x854/0x12ac #46: ffff0000cb7da7f8 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline] #46: ffff0000cb7da7f8 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb0/0xf2c kernel/sched/core.c:4262 #47: ffff0001b3d35018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:559 [inline] #47: ffff0001b3d35018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1406 [inline] #47: ffff0001b3d35018 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1702 [inline] #47: ffff0001b3d35018 (&rq->__lock){-.-.}-{2:2}, at: ttwu_queue kernel/sched/core.c:4055 [inline] #47: ffff0001b3d35018 (&rq->__lock){-.-.}-{2:2}, at: try_to_wake_up+0x4e4/0xf2c kernel/sched/core.c:4378 INFO: lockdep is turned off. CPU: 0 PID: 6862 Comm: syz.4.66 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 __lock_acquire+0x1d5c/0x763c kernel/locking/lockdep.c:5159 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5754 _raw_spin_lock_nested+0x50/0x6c kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested kernel/sched/core.c:559 [inline] raw_spin_rq_lock kernel/sched/sched.h:1406 [inline] rq_lock kernel/sched/sched.h:1702 [inline] ttwu_queue kernel/sched/core.c:4055 [inline] try_to_wake_up+0x4e4/0xf2c kernel/sched/core.c:4378 wake_up_process+0x18/0x24 kernel/sched/core.c:4510 kick_pool+0x3f0/0x59c kernel/workqueue.c:1280 __queue_work+0xdcc/0x12ac kernel/workqueue.c:2361 queue_work_on+0xe0/0x1a0 kernel/workqueue.c:2411 queue_work include/linux/workqueue.h:621 [inline] __bch2_btree_node_write+0x27e8/0x34a8 fs/bcachefs/btree_io.c:2232 bch2_btree_node_write+0x6c/0x1a0 fs/bcachefs/btree_io.c:2307 btree_split+0x36c8/0x4c84 fs/bcachefs/btree_update_interior.c:1706 bch2_btree_split_leaf+0x148/0x734 fs/bcachefs/btree_update_interior.c:1857 bch2_trans_commit_error+0x2a4/0x1068 fs/bcachefs/btree_trans_commit.c:918 __bch2_trans_commit+0x35e4/0x592c fs/bcachefs/btree_trans_commit.c:1138 bch2_trans_commit fs/bcachefs/btree_update.h:170 [inline] bch2_extent_update+0x3d0/0x9b4 fs/bcachefs/io_write.c:326 bch2_fpunch_at+0x640/0xd98 fs/bcachefs/io_misc.c:184 __bch2_resume_logged_op_truncate+0x404/0x620 fs/bcachefs/io_misc.c:260 bch2_truncate+0x198/0x274 fs/bcachefs/io_misc.c:291 bchfs_truncate+0x668/0xa74 fs/bcachefs/fs-io.c:476 bch2_setattr+0x198/0x230 fs/bcachefs/fs.c:926 notify_change+0x9d4/0xc84 fs/attr.c:497 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3355 [inline] do_open fs/namei.c:3705 [inline] path_openat+0x2428/0x2ae8 fs/namei.c:3860 do_filp_open+0x1bc/0x3cc fs/namei.c:3887 do_sys_openat2+0x124/0x1b8 fs/open.c:1413 do_sys_open fs/open.c:1428 [inline] __do_sys_openat fs/open.c:1444 [inline] __se_sys_openat fs/open.c:1439 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1439 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598