There is still something not optimal with the patch since it would disable
debuggin on the kmalloc stack. Ccheck name for NULL only if
slub_debug_slabs.
Subject: slub: Handle NULL parameter in kmem_cache_flags V2
V1->V2
- flags need to be applied regardless if !slub_debug_slabs
kmem_cache_flags may be called with NULL parameter during early boot.
Skip the test in that case.
Signed-off-by: Christoph Lameter <c...@linux.com>
Index: linux/mm/slub.c
===================================================================
--- linux.orig/mm/slub.c 2013-11-07 10:25:49.669706521 -0600
+++ linux/mm/slub.c 2013-11-07 10:27:49.130394661 -0600
@@ -1217,8 +1217,8 @@ static unsigned long kmem_cache_flags(un
/*
* Enable debugging if selected on the kernel commandline.
*/
- if (slub_debug && (!slub_debug_slabs ||
- !strncmp(slub_debug_slabs, name, strlen(slub_debug_slabs))))
+ if (slub_debug && (!slub_debug_slabs || (name &&
+ !strncmp(slub_debug_slabs, name, strlen(slub_debug_slabs)))))
flags |= slub_debug;
return flags;
--
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