Hi, My linux box with kernel version 4.14.30 gets hung at tty_ldisc_lock while executing reboot command. The terminal freezes from where I have executed reboot, however other terminals are still accessible via ssh. Following is the stack trace of tty_ldisc_lock. Can any one help me in fixing this? /root # cat /proc/2725/stack [<ffffffffb533318d>] tty_ldisc_lock+0xd/0x30 [<ffffffffb5333568>] tty_ldisc_hangup+0xa8/0x1d0 [<ffffffffb532b950>] __tty_hangup+0x130/0x290 [<ffffffffb5335486>] disassociate_ctty.part.3+0x36/0x230 [<ffffffffb504d225>] do_exit+0x6f5/0xa60 [<ffffffffb504e17e>] do_group_exit+0x2e/0xa0 [<ffffffffb504e1fb>] SyS_exit_group+0xb/0x10 [<ffffffffb5001797>] do_syscall_64+0x57/0x240 [<ffffffffb5600071>] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [<ffffffffffffffff>] 0xffffffffffffffff Thanks, Ravi
