INFO: task syz-execu INFO: task syz-executor:6537 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6537 tgid:6537 ppid:1 task_flags:0x400140 flags:0x00000011 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5357 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7058 __bch2_fs_stop+0x5f8/0x800 fs/bcachefs/super.c:696 bch2_put_super+0x40/0x50 fs/bcachefs/fs.c:2365 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 bch2_kill_sb+0x40/0x58 fs/bcachefs/fs.c:2618 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1375 __cleanup_mnt+0x20/0x30 fs/namespace.c:1382 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xfc/0x168 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 4 locks held by kworker/u8:1/15: #0: ffff0000c184a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3210 #1: ffff800097ca7be0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3210 #2: ffff800092a7e5b0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x6c0 net/core/net_namespace.c:658 #3: ffff80008f9df000 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x58/0x528 kernel/rcu/tree.c:3815 1 lock held by khungtaskd/32: #0: ffff80008f9d9660 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 2 locks held by pr/ttyAMA-1/43: 3 locks held by kworker/u8:4/716: 2 locks held by getty/6312: #0: ffff0000d337f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800099e8e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 3 locks held by syz-executor/6536: 1 lock held by syz-executor/6537: #0: ffff0000cb7f60e0 (&type->s_umount_key#64){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000cb7f60e0 (&type->s_umount_key#64){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000cb7f60e0 (&type->s_umount_key#64){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 3 locks held by kworker/0:3/6590: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3210 #1: ffff80009ff97be0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3210 #2: ffff00010004e240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1cc/0x25b8 drivers/net/netdevsim/fib.c:1490 3 locks held by kworker/1:7/8154: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3210 #1: ffff80009c957be0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3210 #2: ffff0000d4da8240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1cc/0x25b8 drivers/net/netdevsim/fib.c:1490 1 lock held by syz-executor/10882: #0: ffff800092a8b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 5 locks held by syz-executor/10928: #0: ffff800092af01f0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff800092af0008 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff800092af0008 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff800092af0008 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0xf4/0x624 net/netlink/genetlink.c:1209 #2: ffff800092a8b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000fa9114e8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_set_device+0x158/0x1a2c drivers/net/wireguard/netlink.c:515 #4: ffff0000fa910d38 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2761 [inline] #4: ffff0000fa910d38 (&dev->lock){+.+.}-{4:4}, at: netif_napi_add_weight include/linux/netdevice.h:2793 [inline] #4: ffff0000fa910d38 (&dev->lock){+.+.}-{4:4}, at: netif_napi_add include/linux/netdevice.h:2811 [inline] #4: ffff0000fa910d38 (&dev->lock){+.+.}-{4:4}, at: wg_peer_create+0x470/0x77c drivers/net/wireguard/peer.c:57 2 locks held by syz-executor/10956: #0: ffff80009189fa20 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:160 #1: ffff800092a8b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #1: ffff800092a8b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #1: ffff800092a8b428 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4056 1 lock held by syz-executor/11013: =============================================