INFO: task syz.0.452:4950 blocked for more than 435 seconds. Not tainted 6.16.0-rc1-syzkaller-gfda589c28604 #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.452 state:D stack:0 pid:4950 tgid:4949 ppid:3173 task_flags:0x40054c flags:0x00000004 Call Trace: [] context_switch kernel/sched/core.c:5396 [inline] [] __schedule+0x1022/0x4094 kernel/sched/core.c:6785 [] __schedule_loop kernel/sched/core.c:6863 [inline] [] schedule+0xc4/0x35e kernel/sched/core.c:6878 [] schedule_timeout+0x1c6/0x2ae kernel/time/sleep_timeout.c:75 [] do_wait_for_common kernel/sched/completion.c:95 [inline] [] __wait_for_common+0x1d2/0x3e8 kernel/sched/completion.c:116 [] wait_for_common kernel/sched/completion.c:127 [inline] [] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:148 [] rcu_barrier+0x2dc/0x6cc kernel/rcu/tree.c:3850 [] netdev_run_todo+0x294/0x10b4 net/core/dev.c:11376 [] rtnl_unlock+0x14/0x1c net/core/rtnetlink.c:157 [] tun_detach drivers/net/tun.c:639 [inline] [] tun_chr_close+0xde/0x230 drivers/net/tun.c:3396 [] __fput+0x382/0xa8c fs/file_table.c:465