INFO: task syz.3.241:7158 blocked for more than 143 seconds. Not tainted 6.11.0-rc7-syzkaller-00093-gfdf042df0463 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.241 state:D stack:27128 pid:7158 tgid:7128 ppid:6703 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:800 [inline] finish_preallocate_blocks fs/f2fs/file.c:561 [inline] f2fs_file_open+0x11b/0x3a0 fs/f2fs/file.c:614 do_dentry_open+0x970/0x1440 fs/open.c:959 vfs_open+0x3e/0x330 fs/open.c:1089 do_open fs/namei.c:3727 [inline] path_openat+0x2b3e/0x3470 fs/namei.c:3886 do_filp_open+0x235/0x490 fs/namei.c:3913 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416 do_sys_open fs/open.c:1431 [inline] __do_sys_openat fs/open.c:1447 [inline] __se_sys_openat fs/open.c:1442 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1442 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f589637def9 RSP: 002b:00007f5895dde038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f5896536130 RCX: 00007f589637def9 RDX: 0000000000000000 RSI: 0000000020004280 RDI: ffffffffffffff9c RBP: 00007f58963f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f5896536130 R15: 00007fffd09c69f8 INFO: task syz.3.241:7161 blocked for more than 145 seconds. Not tainted 6.11.0-rc7-syzkaller-00093-gfdf042df0463 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.241 state:D stack:27392 pid:7161 tgid:7128 ppid:6703 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580 inode_lock include/linux/fs.h:800 [inline] do_lock_mount+0x112/0x3a0 fs/namespace.c:2580 lock_mount fs/namespace.c:2622 [inline] do_new_mount_fc fs/namespace.c:3409 [inline] do_new_mount+0x43d/0xb40 fs/namespace.c:3474 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f589637def9 RSP: 002b:00007f5895dbd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5896536208 RCX: 00007f589637def9 RDX: 0000000020000000 RSI: 0000000020000980 RDI: 0000000000000000 RBP: 00007f58963f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f5896536208 R15: 00007fffd09c69f8 Showing all locks held in the system: 1 lock held by pool_workqueue_/3: #0: ffff8880b883e998 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 3 locks held by kworker/0:0/8: #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900000d7d00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc900000d7d00 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline] #2: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958 4 locks held by kworker/u8:1/12: #0: ffff8880206f9948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff8880206f9948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000117d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000117d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562 #3: ffff88801ff6d2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2175 [inline] #3: ffff88801ff6d2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x5b0/0x7a0 fs/f2fs/segment.c:440 1 lock held by khungtaskd/30: #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626 2 locks held by kworker/u8:4/62: 2 locks held by getty/4981: #0: ffff8880303a20a0 (&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+0x6ac/0x1e00 drivers/tty/n_tty.c:2211 3 locks held by kworker/0:7/5282: #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc9000406fd00 ((work_completion)(&data->fib_event_work) ){+.+.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989 #2: ffffffff9a375098 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] #2: ffffffff9a375098 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_check_no_obj_freed+0x234/0x580 lib/debugobjects.c:1020 5 locks held by syz.3.241/7157: 1 lock held by syz.3.241/7158: #0: ffff88805e3bb5f8 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #0: ffff88805e3bb5f8 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: finish_preallocate_blocks fs/f2fs/file.c:561 [inline] #0: ffff88805e3bb5f8 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: f2fs_file_open+0x11b/0x3a0 fs/f2fs/file.c:614 1 lock held by syz.3.241/7161: #0: ffff88805e3bb5f8 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline] #0: ffff88805e3bb5f8 (&sb->s_type->i_mutex_key#29){+.+.}-{3:3}, at: do_lock_mount+0x112/0x3a0 fs/namespace.c:2580 2 locks held by syz.0.283/7515: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.0.283/7516: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.0.283/7517: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.0.283/7519: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.0.283/7520: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.0.283/7521: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.0.283/7526: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.3.259/7680: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7712: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7714: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7717: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7718: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7723: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7724: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7727: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 2 locks held by syz.1.260/7732: #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880762ec0e0 (&type->s_umount_key#95){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120 #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline] #1: ffff888025c7e7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790 3 locks held by syz-executor/8355: #0: ffff88802e1d0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline] #0: ffff88802e1d0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698 #1: ffff88802e1d0078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5183 #2: ffffffff8fbe5a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1972 [inline] #2: ffffffff8fbe5a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2592 3 locks held by syz-executor/8358: #0: ffff88805f5f4d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline] #0: ffff88805f5f4d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698 #1: ffff88805f5f4078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5183 #2: ffffffff8fbe5a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1972 [inline] #2: ffffffff8fbe5a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2592 3 locks held by syz.2.350/8548: #0: ffff88804a408d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline] #0: ffff88804a408d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698 #1: ffff88804a408078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5183 #2: ffffffff8fbe5a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1972 [inline] #2: ffffffff8fbe5a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2592 1 lock held by syz.0.334/8558: #0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline] #0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958 1 lock held by dhcpcd-run-hook/8601: #0: ffff8880b893e998 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 1 lock held by rm/8613: ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00093-gfdf042df0463 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 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:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7157 Comm: syz.3.241 Not tainted 6.11.0-rc7-syzkaller-00093-gfdf042df0463 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:124 [inline] RIP: 0010:lock_is_held_type+0x6e/0x190 kernel/locking/lockdep.c:5827 Code: 2c 25 c0 d6 03 00 41 83 bd dc 0a 00 00 00 0f 85 da 00 00 00 41 89 f6 49 89 ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 24 24 48 c7 c7 40 e2 ea 8b e8 55 1b 00 00 65 ff 05 9e 6c 51 74 41 83 RSP: 0018:ffffc90003f1e418 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffff8880286e3c00 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8e738380 RBP: ffffc90003f1e578 R08: ffffffff81ca67c9 R09: 1ffffffff1fee945 R10: dffffc0000000000 R11: fffffbfff1fee946 R12: 0000000000000246 R13: ffff8880286e3c00 R14: 00000000ffffffff R15: ffffffff8e738380 FS: 00007f5895dff6c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b8cce4b131 CR3: 0000000067ce4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:249 [inline] __might_resched+0xa5/0x780 kernel/sched/core.c:8425 folio_lock+0x29/0x1a0 include/linux/pagemap.h:1048 __filemap_get_folio+0xb7/0xc10 mm/filemap.c:1898 pagecache_get_page+0x2c/0x200 mm/folio-compat.c:81 find_get_page_flags include/linux/pagemap.h:732 [inline] f2fs_grab_cache_page+0x2b/0x320 fs/f2fs/f2fs.h:2756 f2fs_ra_meta_pages+0x753/0xb10 fs/f2fs/checkpoint.c:303 gc_data_segment fs/f2fs/gc.c:1535 [inline] do_garbage_collect+0x233f/0x7d80 fs/f2fs/gc.c:1774 f2fs_gc+0xf04/0x2fa0 fs/f2fs/gc.c:1877 f2fs_balance_fs+0x5f8/0x7a0 fs/f2fs/segment.c:442 f2fs_map_blocks+0x3dc5/0x4850 fs/f2fs/data.c:1781 f2fs_expand_inode_data+0x622/0xbb0 fs/f2fs/file.c:1806 f2fs_fallocate+0x448/0x960 fs/f2fs/file.c:1903 vfs_fallocate+0x553/0x6c0 fs/open.c:334 do_vfs_ioctl+0x2592/0x2e50 fs/ioctl.c:886 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f589637def9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5895dff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f5896536058 RCX: 00007f589637def9 RDX: 0000000020000200 RSI: 0000000040305828 RDI: 0000000000000004 RBP: 00007f58963f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f5896536058 R15: 00007fffd09c69f8