INFO: task kworker/1:0H:26 blocked for more than 143 seconds. Not tainted 6.9.0-syzkaller-08414-g7ee332c9f12b #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0H state:D stack:25208 pid:26 tgid:26 ppid:2 flags:0x00004000 Workqueue: bcachefs_btree_io btree_node_write_work Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6838 six_lock_slowpath+0x660/0x16a0 fs/bcachefs/six.c:493 six_lock_ip_waiter+0x117/0x160 fs/bcachefs/six.c:550 __btree_node_lock_nopath fs/bcachefs/btree_locking.h:208 [inline] __bch2_btree_node_lock_write+0x11c/0x3c0 fs/bcachefs/btree_locking.c:429 __btree_node_lock_write fs/bcachefs/btree_locking.h:298 [inline] bch2_btree_node_lock_write_nofail+0x24c/0x440 fs/bcachefs/btree_locking.c:443 __bch2_btree_node_update_key fs/bcachefs/btree_update_interior.c:2390 [inline] bch2_btree_node_update_key+0x16ff/0x3260 fs/bcachefs/btree_update_interior.c:2450 bch2_btree_node_update_key_get_iter+0x87a/0xab0 fs/bcachefs/btree_update_interior.c:2494 btree_node_write_work+0x8a2/0xe10 fs/bcachefs/btree_io.c:1870 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task kworker/u9:0:53 blocked for more than 144 seconds. Not tainted 6.9.0-syzkaller-08414-g7ee332c9f12b #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u9:0 state:D stack:24088 pid:53 tgid:53 ppid:2 flags:0x00004000 Workqueue: bcachefs bch2_write_point_do_index_updates Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6838 six_lock_slowpath+0x660/0x16a0 fs/bcachefs/six.c:493 six_lock_ip_waiter+0x117/0x160 fs/bcachefs/six.c:550 __btree_node_lock_nopath fs/bcachefs/btree_locking.h:208 [inline] btree_node_lock_nopath+0xb6/0x160 fs/bcachefs/btree_locking.h:221 btree_node_lock fs/bcachefs/btree_locking.h:268 [inline] btree_path_lock_root fs/bcachefs/btree_iter.c:760 [inline] bch2_btree_path_traverse_one+0xc78/0x3250 fs/bcachefs/btree_iter.c:1178 bch2_extent_update+0x11b/0xbb0 fs/bcachefs/io_write.c:289 bch2_write_index_default fs/bcachefs/io_write.c:374 [inline] __bch2_write_index+0xee9/0x2190 fs/bcachefs/io_write.c:528 bch2_write_point_do_index_updates+0x32e/0x690 fs/bcachefs/io_write.c:637 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 4 locks held by kworker/1:0H/26: #0: ffff88805450d548 ((wq_completion)bcachefs_btree_io){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88805450d548 ((wq_completion)bcachefs_btree_io){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000a0fd00 ((work_completion)(&wb->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000a0fd00 ((work_completion)(&wb->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff888045e04250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline] #2: ffff888045e04250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline] #2: ffff888045e04250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x911/0xd30 fs/bcachefs/btree_iter.c:3069 #3: ffff888028951870 (&dev->mutex){....}-{3:3}, at: six_trylock_type fs/bcachefs/six.h:207 [inline] #3: ffff888028951870 (&dev->mutex){....}-{3:3}, at: btree_node_lock fs/bcachefs/btree_locking.h:266 [inline] #3: ffff888028951870 (&dev->mutex){....}-{3:3}, at: btree_path_lock_root fs/bcachefs/btree_iter.c:760 [inline] #3: ffff888028951870 (&dev->mutex){....}-{3:3}, at: bch2_btree_path_traverse_one+0xa85/0x3250 fs/bcachefs/btree_iter.c:1178 1 lock held by khungtaskd/30: #0: ffffffff8e3343a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e3343a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8e3343a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 5 locks held by kworker/u9:0/53: #0: ffff888043ec3948 ((wq_completion)bcachefs){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888043ec3948 ((wq_completion)bcachefs){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000bd7d00 ((work_completion)(&wp->index_update_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000bd7d00 ((work_completion)(&wp->index_update_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff888045e04250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline] #2: ffff888045e04250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline] #2: ffff888045e04250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x911/0xd30 fs/bcachefs/btree_iter.c:3069 #3: ffff88802133a870 (&dev->mutex){....}-{3:3}, at: six_trylock_type fs/bcachefs/six.h:207 [inline] #3: ffff88802133a870 (&dev->mutex){....}-{3:3}, at: btree_node_lock fs/bcachefs/btree_locking.h:266 [inline] #3: ffff88802133a870 (&dev->mutex){....}-{3:3}, at: btree_path_lock_root fs/bcachefs/btree_iter.c:760 [inline] #3: ffff88802133a870 (&dev->mutex){....}-{3:3}, at: bch2_btree_path_traverse_one+0xa85/0x3250 fs/bcachefs/btree_iter.c:1178 #4: ffff888028951870 (&dev->mutex){....}-{3:3}, at: bch2_trans_iter_init fs/bcachefs/btree_iter.h:487 [inline] #4: ffff888028951870 (&dev->mutex){....}-{3:3}, at: bch2_write_index_default fs/bcachefs/io_write.c:369 [inline] #4: ffff888028951870 (&dev->mutex){....}-{3:3}, at: __bch2_write_index+0xbc3/0x2190 fs/bcachefs/io_write.c:528 7 locks held by kworker/0:2/1142: #0: ffff88801ca8a548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801ca8a548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90004917d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90004917d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff888023c13190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff888023c13190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5150 drivers/usb/core/hub.c:5850 #3: ffff888064472190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #3: ffff888064472190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x103/0x950 drivers/usb/core/hub.c:2296 #4: ffff888075e45160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #4: ffff888075e45160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline] #4: ffff888075e45160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1290 #5: ffffffff8f09cf48 (input_mutex){+.+.}-{3:3}, at: __input_unregister_device+0x308/0x630 drivers/input/input.c:2219 #6: ffffffff8e339778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #6: ffffffff8e339778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:939 2 locks held by getty/4841: #0: ffff88802b4360a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201 1 lock held by syz-executor.4/11100: #0: ffffffff8e339778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] #0: ffffffff8e339778 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:939 4 locks held by syz-executor.1/13009: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.9.0-syzkaller-08414-g7ee332c9f12b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xfde/0x1020 kernel/hung_task.c:380 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5175 Comm: kworker/0:6 Not tainted 6.9.0-syzkaller-08414-g7ee332c9f12b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: events kfree_rcu_work RIP: 0010:__trace_hardirqs_on_caller kernel/locking/lockdep.c:4300 [inline] RIP: 0010:lockdep_hardirqs_on_prepare+0x398/0x780 kernel/locking/lockdep.c:4359 Code: a1 00 00 00 4c 89 e0 48 c1 e8 03 0f b6 04 10 84 c0 75 50 8b 43 20 a9 00 00 04 00 74 28 31 d2 a9 00 00 03 00 0f 94 c2 83 f2 07 <48> 8b 7c 24 10 48 89 de e8 db aa 00 00 48 ba 00 00 00 00 00 fc ff RSP: 0018:ffffc9000315f8a0 EFLAGS: 00000006 RAX: 0000000000040580 RBX: ffff888028a16508 RCX: ffffffff8172e9fa RDX: 0000000000000006 RSI: 0000000000000008 RDI: ffffffff92f9d598 RBP: ffffc9000315f958 R08: ffffffff92f9d59f R09: 1ffffffff25f3ab3 R10: dffffc0000000000 R11: fffffbfff25f3ab4 R12: ffff888028a16528 R13: 0000000000000001 R14: ffff888028a164d8 R15: 1ffff11005142c9b FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f034e57b038 CR3: 000000000e132000 CR4: 0000000000350ef0 Call Trace: trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61 kasan_quarantine_put+0xdc/0x230 mm/kasan/quarantine.c:234 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free_freelist_hook mm/slub.c:2150 [inline] slab_free_bulk mm/slub.c:4366 [inline] kmem_cache_free_bulk+0x1f8/0x370 mm/slub.c:4580 kfree_bulk include/linux/slab.h:545 [inline] kvfree_rcu_bulk+0x24b/0x4e0 kernel/rcu/tree.c:3371 kfree_rcu_work+0x44b/0x500 kernel/rcu/tree.c:3450 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244