INFO: task syz-executor.0:2039 blocked for more than 430 seconds. Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid: 2039 ppid: 2036 flags:0x00000000 Call Trace: [] schedule+0x74/0x14c kernel/sched/core.c:6369 [] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6428 [] __mutex_lock_common kernel/locking/mutex.c:673 [inline] [] __mutex_lock+0x522/0xade kernel/locking/mutex.c:733 [] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:785 [] rtnl_lock net/core/rtnetlink.c:72 [inline] [] rtnetlink_rcv_msg+0x2fe/0x9a0 net/core/rtnetlink.c:5589 [] netlink_rcv_skb+0xf8/0x2be net/netlink/af_netlink.c:2494 [] rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:5610 [] netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] [] netlink_unicast+0x40e/0x5fe net/netlink/af_netlink.c:1343 [] netlink_sendmsg+0x4e0/0x994 net/netlink/af_netlink.c:1919 [] sock_sendmsg_nosec net/socket.c:705 [inline] [] sock_sendmsg+0xa0/0xc4 net/socket.c:725 [] __sys_sendto+0x1f2/0x2e0 net/socket.c:2040 [] __do_sys_sendto net/socket.c:2052 [inline] [] sys_sendto+0x3e/0x52 net/socket.c:2048 [] ret_from_syscall+0x0/0x2 Showing all locks held in the system: 2 locks held by kworker/1:0/20: 1 lock held by khungtaskd/27: #0: ffffffff84b73e00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x3c/0x20e kernel/locking/lockdep.c:6462 1 lock held by hwrng/669: #0: ffffffff84e5d528 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0xd8/0x23c drivers/char/hw_random/core.c:435 2 locks held by getty/1990: #0: ffffaf800bf8b098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340 #1: ffff8f8010b082e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xa52/0xbac drivers/tty/n_tty.c:2077 2 locks held by syz-fuzzer/2019: 2 locks held by kworker/u4:0/2029: #0: ffffaf8007229138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:630 [inline] #0: ffffaf8007229138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #0: ffffaf8007229138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x524/0xffe kernel/workqueue.c:2278 #1: ffffaf8009d33cf0 ((kfence_timer).work){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:630 [inline] #1: ffffaf8009d33cf0 ((kfence_timer).work){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline] #1: ffffaf8009d33cf0 ((kfence_timer).work){+.+.}-{0:0}, at: process_one_work+0x524/0xffe kernel/workqueue.c:2278 1 lock held by syz-executor.0/2039: #0: ffffffff855cf108 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff855cf108 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x2fe/0x9a0 net/core/rtnetlink.c:5589 1 lock held by syz-executor.1/2040: =============================================