INFO: task syz-executor.2:22244 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller-16455-ga41a877bc12d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid:22244 ppid: 3235 flags:0x00000009 Call trace: __switch_to+0x180/0x28c arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x570 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 request_wait_answer+0x1c0/0x388 fs/fuse/dev.c:407 __fuse_request_send+0x1f8/0x254 fs/fuse/dev.c:426 fuse_simple_request+0x354/0x3fc fs/fuse/dev.c:511 fuse_send_ioctl fs/fuse/ioctl.c:14 [inline] fuse_do_ioctl+0x614/0xba4 fs/fuse/ioctl.c:273 fuse_ioctl_common+0x80/0xb0 fs/fuse/ioctl.c:356 fuse_dir_ioctl+0x74/0x88 fs/fuse/dir.c:1485 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xd0/0x140 fs/ioctl.c:856 __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+0x48/0x154 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:624 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/10: #0: ffff80000d4a3568 (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/11: #0: ffff80000d4a3bb8 (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/26: #0: ffff80000d4a3440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 1 lock held by dhcpcd/2613: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 2 locks held by getty/2713: #0: ffff0000c7299898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f67e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x88c drivers/tty/n_tty.c:2177 3 locks held by kworker/0:3/3112: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800013813d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by kworker/0:6/3115: #0: ffff0000c7113b38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80001386bd80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by kworker/1:5/3117: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff80001387bd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d3b9230 (umhelper_sem){++++}-{3:3}, at: usermodehelper_read_lock_wait+0x68/0x154 kernel/umh.c:249 3 locks held by kworker/1:6/3118: #0: ffff0000c7113b38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff8000128abd80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 4 locks held by kworker/u4:6/3160: 5 locks held by kworker/0:0/11865: #0: ffff0000c0c14138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800015fbbd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff0000c64b0990 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff0000c64b0990 (&dev->mutex){....}-{3:3}, at: hub_event+0x8c/0x624 drivers/usb/core/hub.c:5681 #3: ffff0000f56a9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff0000f56a9190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xa4/0x3e0 drivers/usb/core/hub.c:2226 #4: ffff000129b8c918 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff000129b8c918 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1038 [inline] #4: ffff000129b8c918 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x74/0x3a8 drivers/base/dd.c:1232 4 locks held by kworker/u4:7/14444: #0: ffff0000c0174938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800013d83d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d858a98 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x68/0x628 net/core/net_namespace.c:557 #3: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by kworker/u4:14/14506: #0: ffff0000c0015138 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800013e8bd80 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 3 locks held by kworker/1:17/17927: #0: ffff0000c0010738 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x270/0x504 kernel/workqueue.c:2262 #1: ffff800013fdbd80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x29c/0x504 kernel/workqueue.c:2264 #2: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74 1 lock held by syz-executor.4/25890: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 1 lock held by syz-executor.4/25897: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 1 lock held by syz-executor.1/25893: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 1 lock held by syz-executor.1/25901: #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffff80000d85a9a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x458/0x82c net/core/rtnetlink.c:6087 =============================================