INFO: task syz-executor.2:14743 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid:14743 ppid: 3068 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 request_wait_answer+0x1c0/0x3a8 fs/fuse/dev.c:407 __fuse_request_send+0x1f8/0x264 fs/fuse/dev.c:426 fuse_simple_request+0x354/0x40c fs/fuse/dev.c:511 fuse_send_open fs/fuse/file.c:48 [inline] fuse_file_open+0x1a8/0x2b8 fs/fuse/file.c:145 fuse_do_open fs/fuse/file.c:172 [inline] fuse_open_common+0x120/0x230 fs/fuse/file.c:251 fuse_open+0x2c/0x3c fs/fuse/file.c:340 do_dentry_open+0x330/0x6d0 fs/open.c:880 vfs_open+0x38/0x48 fs/open.c:1016 do_open fs/namei.c:3557 [inline] path_openat+0xe34/0x11c4 fs/namei.c:3691 do_filp_open+0xdc/0x1b8 fs/namei.c:3718 do_sys_openat2+0xb8/0x22c fs/open.c:1313 do_sys_open fs/open.c:1329 [inline] __do_sys_openat fs/open.c:1345 [inline] __se_sys_openat fs/open.c:1340 [inline] __arm64_sys_openat+0xb0/0xe0 fs/open.c:1340 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d433568 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d433bb8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d433440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 3 locks held by kworker/u4:3/977: 2 locks held by kworker/u4:5/1065: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80001406bd80 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 2 locks held by getty/2712: #0: ffff0000c7ccf898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 2 locks held by kworker/0:12/3505: 2 locks held by kworker/u4:6/4170: 2 locks held by kworker/u4:7/4180: #0: ffff0000c0014938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800013febd80 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 3 locks held by syz-executor.3/22110: #0: ffff80000d7e8a98 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x1d4/0x3e0 net/core/net_namespace.c:468 #1: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 #2: ffff80000d4349f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #2: ffff80000d4349f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x210/0x47c kernel/rcu/tree_exp.h:940 1 lock held by syz-executor.4/22167: #0: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 1 lock held by syz-executor.1/22165: #0: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 1 lock held by syz-executor.5/22170: #0: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 1 lock held by syz-executor.0/22172: #0: ffff00010c2fc658 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff00010c2fc658 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0xa0/0x1d0 mm/util.c:550 2 locks held by syz-executor.0/22173: #0: ffff80000d7e8a98 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x1d4/0x3e0 net/core/net_namespace.c:468 #1: ffff80000d7eaa28 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by syz-executor.0/22174: =============================================