Messages in this thread |  | | | Subject | Re: NULL pointer in kmem_cache_alloc with 2.6.25-rc1 | | From | "Zhang, Yanmin" <> | | Date | Tue, 19 Feb 2008 15:03:14 +0800 |
On Fri, 2008-02-15 at 08:42 -0800, Christoph Lameter wrote: > On Fri, 15 Feb 2008, Zhang, Yanmin wrote: > > > On my 16-core tigerton, kernel panic when I ran hackbench process testing. See > > below log. > > > > > Kernel panic at line 1637 in file mm/slub.c because object=c->freelist=NULL. > > Hmmmm. freelist should never be NULL. Could you rerun the test and boot with > slub_debug to make sure that there is no memory corruption? 1) Without slub_debug option, sometime I could trigger it, sometimes not. 2) With slub_debug option, or just enable debug for slab skbuff_fclone_cache and skbuff_head_cache, I couldn't trigger it.
I will do more testing and investigation, as the bug also exists in 2.6.25-rc2.
-yanmin
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