INFO: task syz.0.172:6942 blocked for more than 143 seconds. Not tainted 6.12.0-rc1-syzkaller-g2d8bce6e34be #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.172 state:D stack:0 pid:6942 tgid:6942 ppid:6872 flags:0x00000001 Call trace: __switch_to+0x428/0x860 arch/arm64/kernel/process.c:697 context_switch kernel/sched/core.c:5315 [inline] __schedule+0x14bc/0x2718 kernel/sched/core.c:6675 __schedule_loop kernel/sched/core.c:6752 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6767 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6824 __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 nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x888/0xbb0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2550 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x7a4/0xa8c net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg net/socket.c:744 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2602 ___sys_sendmsg net/socket.c:2656 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2685 __do_sys_sendmsg net/socket.c:2694 [inline] __se_sys_sendmsg net/socket.c:2692 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2692 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:732 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:750 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 3 locks held by kworker/u8:1/13: #0: ffff0000d1b8c148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff8000978c7c20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by khungtaskd/31: #0: ffff80008f9cf760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 4 locks held by kworker/u8:2/43: #0: ffff0000c1891948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff800097fa7c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff8000926f3850 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:580 #3: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/u8:3/44: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x628/0x1600 kernel/workqueue.c:3203 #1: ffff800097fb7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6bc/0x1600 kernel/workqueue.c:3203 #2: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by kworker/u8:9/2114: 2 locks held by getty/6184: #0: ffff0000ccd1d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b7fb2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz.1.171/6867: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.172/6942: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.173/7013: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.174/7014: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.175/7023: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.176/7024: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.177/7042: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.178/7101: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.179/7102: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.180/7107: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.181/7115: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.182/7129: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.183/7180: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.185/7187: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.184/7205: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.186/7206: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.187/7211: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.188/7239: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.189/7274: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.190/7283: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.191/7294: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.192/7295: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.193/7312: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.194/7327: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.195/7362: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.197/7374: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.196/7378: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.198/7392: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.199/7406: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.200/7437: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.201/7453: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.202/7458: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.203/7472: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.204/7486: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.205/7506: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.206/7554: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.207/7569: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.208/7574: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.210/7583: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.209/7584: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.211/7611: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.212/7642: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.213/7657: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.214/7663: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.215/7667: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.0.216/7681: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.4.217/7706: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.1.218/7727: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.2.219/7747: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 2 locks held by syz.3.220/7748: #0: ffff800092761110 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff80008fc93308 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x114/0x1544 fs/nfsd/nfsctl.c:1964 1 lock held by syz-executor/7753: #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6643 1 lock held by syz-executor/7764: #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6643 1 lock held by syz-executor/7774: #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000926ffd68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6643 =============================================