INFO: task syz.0.740:9901 blocked for more than 430 seconds.
      Not tainted 6.10.0-rc3-syzkaller-g83a7eefedc9b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.740       state:D stack:0     pid:9901  tgid:9900  ppid:9206   flags:0x00000004
Call Trace:
[<ffffffff85c949b2>] context_switch kernel/sched/core.c:5408 [inline]
[<ffffffff85c949b2>] __schedule+0xd5c/0x3486 kernel/sched/core.c:6745
[<ffffffff85c971a0>] __schedule_loop kernel/sched/core.c:6822 [inline]
[<ffffffff85c971a0>] schedule+0xc4/0x324 kernel/sched/core.c:6837
[<ffffffff85c97ff0>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6894
[<ffffffff85c9b346>] __mutex_lock_common kernel/locking/mutex.c:684 [inline]
[<ffffffff85c9b346>] __mutex_lock+0x86a/0x1022 kernel/locking/mutex.c:752
[<ffffffff85c9bb12>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:804
[<ffffffff84a5e51e>] rtnl_lock net/core/rtnetlink.c:79 [inline]
[<ffffffff84a5e51e>] rtnetlink_rcv_msg+0x3e2/0xdb2 net/core/rtnetlink.c:6632
[<ffffffff84d8f2f4>] netlink_rcv_skb+0x216/0x3dc net/netlink/af_netlink.c:2564
[<ffffffff84a505b6>] rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6653
[<ffffffff84d8d58e>] netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
[<ffffffff84d8d58e>] netlink_unicast+0x508/0x862 net/netlink/af_netlink.c:1361
[<ffffffff84d8e14c>] netlink_sendmsg+0x864/0xdc2 net/netlink/af_netlink.c:1905
[<ffffffff849533a4>] sock_sendmsg_nosec net/socket.c:730 [inline]
[<ffffffff849533a4>] __sock_sendmsg+0xcc/0x162 net/socket.c:745
[<ffffffff84953fb2>] ____sys_sendmsg+0x5ce/0x79e net/socket.c:2585
[<ffffffff8495b302>] ___sys_sendmsg+0x144/0x1e6 net/socket.c:2639
[<ffffffff8495bdda>] __sys_sendmsg+0x130/0x1f0 net/socket.c:2668
[<ffffffff8495bf0a>] __do_sys_sendmsg net/socket.c:2677 [inline]
[<ffffffff8495bf0a>] __se_sys_sendmsg net/socket.c:2675 [inline]
[<ffffffff8495bf0a>] __riscv_sys_sendmsg+0x70/0xa2 net/socket.c:2675
[<ffffffff8000e200>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85c8a3a8>] do_trap_ecall_u+0x14c/0x214 arch/riscv/kernel/traps.c:330
[<ffffffff85caccb0>] ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:112

Showing all locks held in the system:
1 lock held by khungtaskd/37:
 #0: ffffffff87bc3f00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6610
1 lock held by klogd/2855:
1 lock held by dhcpcd/2899:
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xdb2 net/core/rtnetlink.c:6632
2 locks held by getty/3006:
 #0: ff600000170a70a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ff20000000e032f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd6a/0x1288 drivers/tty/n_tty.c:2201
2 locks held by sshd/3029:
3 locks held by syz-executor/3031:
3 locks held by kworker/u8:0/9208:
 #0: ff60000016fb0948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x824/0x1d5c kernel/workqueue.c:3206
 #1: ff20000003983c90 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x850/0x1d5c kernel/workqueue.c:3206
 #2: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x22/0x2a net/core/rtnetlink.c:79
2 locks held by syz.1.739/9899:
1 lock held by syz.0.740/9901:
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xdb2 net/core/rtnetlink.c:6632
1 lock held by syz-executor/9904:
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xdb2 net/core/rtnetlink.c:6632
1 lock held by syz-executor/9906:
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff88e5d168 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xdb2 net/core/rtnetlink.c:6632

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