INFO: task syz-executor:19818 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21024 pid:19818 tgid:19818 ppid:19798  task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5830 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c4/0x15a0 kernel/locking/mutex.c:821
 rtnl_net_lock include/linux/rtnetlink.h:134 [inline]
 inet_rtm_newaddr+0x470/0x19f0 net/ipv4/devinet.c:968
 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7169
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2585
 netlink_unicast_kernel net/netlink/af_netlink.c:1336 [inline]
 netlink_unicast+0x8ef/0xa80 net/netlink/af_netlink.c:1362
 netlink_sendmsg+0x7f0/0xb20 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec+0x14e/0x190 net/socket.c:800
 __sock_sendmsg net/socket.c:818 [inline]
 __sys_sendto+0x408/0x5a0 net/socket.c:2283
 __do_sys_sendto net/socket.c:2290 [inline]
 __se_sys_sendto net/socket.c:2286 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2286
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8b6436034e
RSP: 002b:00007fff8ff4ba08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055558c3fb500 RCX: 00007f8b6436034e
RDX: 0000000000000028 RSI: 00007f8b65154670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007fff8ff4ba84 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f8b65154670 R15: 0000000000000000
 </TASK>
INFO: task syz.8.10797:20331 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.10797     state:D stack:27408 pid:20331 tgid:20328 ppid:18059  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5830 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7531
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c4/0x15a0 kernel/locking/mutex.c:821
 __tun_chr_ioctl+0x3da/0x1e70 drivers/net/tun.c:3250
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cc159fb19
RSP: 002b:00007f7cc2393028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7cc1826090 RCX: 00007f7cc159fb19
RDX: 0000000000000001 RSI: 00000000400454c9 RDI: 0000000000000004
RBP: 00007f7cc1637b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7cc1826128 R14: 00007f7cc1826090 R15: 00007fff21aeaed8
 </TASK>
INFO: task syz.8.10797:20332 blocked for more than 143 seconds.