Kernel panics in presence of "rcon" module

Solution Verified - Updated -

Issue

  • The kernel crashes with the panic message: kernel BUG at lib/list_debug.c:65!, preceded by the list_del corruption. prev->next should be XXXXXXXX, but was YYYYYYYY printout.
  • The kernel crashes in the n_tty_write() function, called by the rcon_ioctl() → iostring() sequence from the rcon module.

Environment

  • Red Hat Enterprise Linux 5.3 (seen on 2.6.18-128.1.16.el5PAE)
  • Red Hat Enterprise Linux 7.5 (seen on 3.10.0-862.9.1.el7.x86_64)

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