INFO: task syz-executor.2:8122 blocked for more than 143 seconds. Tainted: G W 6.10.0-rc2-syzkaller-g8867bbd4a056 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:8122 tgid:8121 ppid:6654 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14b8/0x24e8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 netlink_dump+0x48c/0xbf0 net/netlink/af_netlink.c:2336 __netlink_dump_start+0x4d4/0x71c net/netlink/af_netlink.c:2454 netlink_dump_start include/linux/netlink.h:340 [inline] rtnetlink_rcv_msg+0xa2c/0xdbc net/core/rtnetlink.c:6551 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2564 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6613 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x7a0/0xa84 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_write_iter+0x2d8/0x448 net/socket.c:1160 new_sync_write fs/read_write.c:497 [inline] vfs_write+0x828/0xc78 fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.3:8140 blocked for more than 143 seconds. Tainted: G W 6.10.0-rc2-syzkaller-g8867bbd4a056 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:8140 tgid:8139 ppid:6282 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14b8/0x24e8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6894 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 rtnl_lock net/core/rtnetlink.c:79 [inline] rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2564 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6613 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x7a0/0xa84 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2585 ___sys_sendmsg net/socket.c:2639 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2668 __do_sys_sendmsg net/socket.c:2677 [inline] __se_sys_sendmsg net/socket.c:2675 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2675 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008f1c76a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 3 locks held by kworker/u8:3/43: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x62c/0x15e8 kernel/workqueue.c:3205 #1: ffff800093ff7c20 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x15e8 kernel/workqueue.c:3205 #2: ffff800091da56a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:4/164: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x62c/0x15e8 kernel/workqueue.c:3205 #1: ffff800097c67c20 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x15e8 kernel/workqueue.c:3205 #2: ffff800091da56a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:6/272: #0: ffff0000d1c9a148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x62c/0x15e8 kernel/workqueue.c:3205 #1: ffff800098297c20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x15e8 kernel/workqueue.c:3205 #2: ffff800091da56a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by getty/6010: #0: ffff0000d24950a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800097d7b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3},