INFO: task syz-executor:6448 blocked for more than 143 seconds. Not tainted 6.12.0-rc6-syzkaller-gca3a5c08a5ef #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6448 tgid:6448 ppid:1 flags:0x00000009 Call trace: __switch_to+0x418/0x7a4 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 bch2_fs_read_only+0x87c/0xf00 fs/bcachefs/super.c:347 __bch2_fs_stop+0x104/0x570 fs/bcachefs/super.c:620 bch2_put_super+0x40/0x50 fs/bcachefs/fs.c:2050 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 bch2_kill_sb+0x40/0x58 fs/bcachefs/fs.c:2278 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task kworker/0:6:6508 blocked for more than 143 seconds. Not tainted 6.12.0-rc6-syzkaller-gca3a5c08a5ef #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:6 state:D stack:0 pid:6508 tgid:6508 ppid:2 flags:0x00000008 Workqueue: bcachefs_write_ref bch2_delete_dead_snapshots_work (bcachefs-delete-dead-snapshots/) Call trace: __switch_to+0x418/0x7a4 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0x1cc/0x33c kernel/time/timer.c:2615 __closure_sync_timeout+0x29c/0x3e4 lib/closure.c:217 closure_sync_timeout include/linux/closure.h:206 [inline] __bch2_wait_on_allocator+0x110/0x23c fs/bcachefs/alloc_foreground.c:1812 bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:239 [inline] bch2_btree_update_start+0x11a8/0x15ac fs/bcachefs/btree_update_interior.c:1274 bch2_btree_split_leaf+0x118/0x7b0 fs/bcachefs/btree_update_interior.c:1850 bch2_trans_commit_error+0x2a8/0x1150 fs/bcachefs/btree_trans_commit.c:942 __bch2_trans_commit+0x2a80/0x6604 fs/bcachefs/btree_trans_commit.c:1140 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline] bch2_delete_dead_snapshots+0xcac/0x2d18 fs/bcachefs/snapshot.c:1643 bch2_delete_dead_snapshots_work+0x34/0x4c fs/bcachefs/snapshot.c:1718 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task bch-reclaim/loo:6734 blocked for more than 143 seconds. Not tainted 6.12.0-rc6-syzkaller-gca3a5c08a5ef #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:bch-reclaim/loo state:D stack:0 pid:6734 tgid:6734 ppid:2 flags:0x00000008 Call trace: __switch_to+0x418/0x7a4 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0x1cc/0x33c kernel/time/timer.c:2615 __closure_sync_timeout+0x29c/0x3e4 lib/closure.c:217 closure_sync_timeout include/linux/closure.h:206 [inline] __bch2_wait_on_allocator+0x110/0x23c fs/bcachefs/alloc_foreground.c:1812 bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:239 [inline] bch2_btree_update_start+0x11a8/0x15ac fs/bcachefs/btree_update_interior.c:1274 bch2_btree_split_leaf+0x118/0x7b0 fs/bcachefs/btree_update_interior.c:1850 bch2_trans_commit_error+0x2a8/0x1150 fs/bcachefs/btree_trans_commit.c:942 __bch2_trans_commit+0x2a80/0x6604 fs/bcachefs/btree_trans_commit.c:1140 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline] bch2_btree_write_buffer_flush_locked+0x24cc/0x2c98 fs/bcachefs/btree_write_buffer.c:429 btree_write_buffer_flush_seq+0xff8/0x1130 fs/bcachefs/btree_write_buffer.c:510 bch2_btree_write_buffer_journal_flush+0x58/0x94 fs/bcachefs/btree_write_buffer.c:525 journal_flush_pins+0x524/0xa10 fs/bcachefs/journal_reclaim.c:565 __bch2_journal_reclaim+0x72c/0xfcc fs/bcachefs/journal_reclaim.c:698 bch2_journal_reclaim_thread+0x154/0x4b8 fs/bcachefs/journal_reclaim.c:740 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 INFO: task bch-copygc/loop:6737 blocked for more than 143 seconds. Not tainted 6.12.0-rc6-syzkaller-gca3a5c08a5ef #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:bch-copygc/loop state:D stack:0 pid:6737 tgid:6737 ppid:2 flags:0x00000008 Call trace: __switch_to+0x418/0x7a4 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5328 [inline] __schedule+0x16e0/0x27d0 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6782 schedule_timeout+0x1cc/0x33c kernel/time/timer.c:2615 __closure_sync_timeout+0x29c/0x3e4 lib/closure.c:217 closure_sync_timeout include/linux/closure.h:206 [inline] __bch2_wait_on_allocator+0x110/0x23c fs/bcachefs/alloc_foreground.c:1812 bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:239 [inline] __bch2_write+0x4264/0x486c fs/bcachefs/io_write.c:1504 bch2_write+0x908/0x15c8 fs/bcachefs/io_write.c:1634 closure_queue include/linux/closure.h:270 [inline] closure_call include/linux/closure.h:432 [inline] bch2_data_update_read_done+0x14c/0x1e0 fs/bcachefs/data_update.c:426 move_write fs/bcachefs/move.c:133 [inline] bch2_moving_ctxt_do_pending_writes+0x330/0x80c fs/bcachefs/move.c:164 bch2_move_ratelimit+0x5e0/0xbd8 fs/bcachefs/move.c:492 bch2_evacuate_bucket+0x1870/0x2298 fs/bcachefs/move.c:702 bch2_copygc+0x2d3c/0x3500 fs/bcachefs/movinggc.c:240 bch2_copygc_thread+0x65c/0xbdc fs/bcachefs/movinggc.c:381 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008f9efda0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 2 locks held by getty/6187: #0: ffff0000d230a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b84b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 1 lock held by syz-executor/6427: #0: ffff0000d06ae0e0 (&type->s_umount_key#57){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000d06ae0e0 (&type->s_umount_key#57){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000d06ae0e0 (&type->s_umount_key#57){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 1 lock held by syz-executor/6445: #0: ffff80008f9f52f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #0: ffff80008f9f52f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x324/0x674 kernel/rcu/tree_exp.h:976 2 locks held by syz-executor/6448: #0: ffff0000cee160e0 (&type->s_umount_key#71){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000cee160e0 (&type->s_umount_key#71){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000cee160e0 (&type->s_umount_key#71){+.+.}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff0000f3a00278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xfc/0x570 fs/bcachefs/super.c:619 4 locks held by kworker/0:6/6508: #0: ffff0000d5c7e948 ((wq_completion)bcachefs_write_ref){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff80009d647c20 ((work_completion)(&c->snapshot_delete_work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff0000f3a04398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:150 #3: ffff0000f3a266d0 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x588/0x15ac fs/bcachefs/btree_update_interior.c:1202 2 locks held by kworker/u8:10/6651: 4 locks held by bch-reclaim/loo/6734: #0: ffff0000f3a4b0a8 (&j->reclaim_lock){+.+.}-{3:3}, at: bch2_journal_reclaim_thread+0x144/0x4b8 fs/bcachefs/journal_reclaim.c:739 #1: ffff0000f3a04398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:150 #2: ffff0000f3a04740 (&wb->flushing.lock){+.+.}-{3:3}, at: btree_write_buffer_flush_seq+0xff0/0x1130 fs/bcachefs/btree_write_buffer.c:509 #3: ffff0000f3a266d0 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x588/0x15ac fs/bcachefs/btree_update_interior.c:1202 2 locks held by syz.7.722/9796: =============================================