2.6.27.59-stable review patch. If anyone has any objections, please let us know.
------------------ From: Kamal Mostafa <[email protected]> commit 77eed821accf5dd962b1f13bed0680e217e49112 upstream. Avoid removing all of memory and panicing when "mem={invalid}" is specified, e.g. mem=blahblah, mem=0, or mem=nopentium (on platforms other than x86_32). Signed-off-by: Kamal Mostafa <[email protected]> BugLink: http://bugs.launchpad.net/bugs/553464 Cc: Yinghai Lu <[email protected]> Cc: Len Brown <[email protected]> Cc: Rafael J. Wysocki <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/x86/kernel/e820.c | 3 +++ 1 file changed, 3 insertions(+) Index: longterm-2.6.27/arch/x86/kernel/e820.c =================================================================== --- longterm-2.6.27.orig/arch/x86/kernel/e820.c 2011-01-23 10:52:13.265064331 +0100 +++ longterm-2.6.27/arch/x86/kernel/e820.c 2011-04-25 15:37:16.046278520 +0200 @@ -1189,6 +1189,9 @@ userdef = 1; mem_size = memparse(p, &p); + /* don't remove all of memory when handling "mem={invalid}" param */ + if (mem_size == 0) + return -EINVAL; e820_remove_range(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1); return 0; _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
