From: James Bottomley Date: Tue, 19 Apr 2011 21:29:36 +0000 (-0500) Subject: [PARISC] slub: fix panic with DISCONTIGMEM X-Git-Tag: v2.6.39-rc6~37^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4a5fa3590f09999f6db41bc386bce40848fa9f63;p=pandora-kernel.git [PARISC] slub: fix panic with DISCONTIGMEM Slub makes assumptions about page_to_nid() which are violated by DISCONTIGMEM and !NUMA. This violation results in a panic because page_to_nid() can be non-zero for pages in the discontiguous ranges and this leads to a null return by get_node(). The assertion by the maintainer is that DISCONTIGMEM should only be allowed when NUMA is also defined. However, at least six architectures: alpha, ia64, m32r, m68k, mips, parisc violate this. The panic is a regression against slab, so just mark slub broken in the problem configuration to prevent users reporting these panics. Cc: stable@kernel.org Acked-by: David Rientjes Acked-by: Pekka Enberg Signed-off-by: James Bottomley --- Reading git-diff-tree failed