Kernel panic due to a memory double-free in security_inode_init_security()

Solution Verified - Updated -

Issue

The kernel panics with either of the following symbols recorded in the panic call trace:

  • selinux_sb_show_options() and kfree() (more often)
  • selinux_sb_show_options() and strchr() or strncmp() (less often)

Environment

  • Red Hat Enterprise Linux 7

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