On Mon, Aug 23, 2010 at 04:18:05PM -0500, Cliff Wickman wrote: > > A customer has seen the kexec command exhaust its buffer for the ELF headers > from /proc/kcore. It found 147 program headers, which requires a buffer of > over 8k. > (This overflow was on an SGI UV with an extremely large memory, hence > many ram ranges.) > The default buffer size of 4k is configured in KCORE_ELF_HEADERS_SIZE. > > The easy solution would probably be to increase the buffer to 16k. > That is room for 291 entries, on x86_64. > > You might want to make the command dynamically enlarge the buffer when > it is found to be too small, but I don't think this command's use of a > little more memory is of concern. So there is probably no reason to > change the program logic in this area. Thanks Cliff, applied.
