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A netbuff shouldn't be too huge. It's bounded by MTU and TCP segment reassembly. If we are asked to create one that is unreasonably big, refuse. This is a hardening measure: if we hit this code, there's a bug somewhere else that we should catch and fix. This commit: - stops the bug propagating any further. - provides a spot to instrument in e.g. fuzzing to try to catch these bugs. I have put instrumentation (e.g. __builtin_trap() to force a crash) here and have not been able to find any more crashes. Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. See the file MAINTAINERS for information about the GRUB maintainers, etc. If you found a security vulnerability in the GRUB please check the SECURITY file to get more information how to properly report this kind of bugs to the maintainers. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'