Messages in this thread Patch in this message | | | Date | Tue, 15 Apr 2008 09:41:59 +0300 | From | "Pekka Enberg" <> | Subject | Re: [bug] SLUB + mm/slab.c boot crash in -rc9 |
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On Tue, Apr 15, 2008 at 9:25 AM, Ingo Molnar <mingo@elte.hu> wrote: > so it's probably the first few page allocations (setup_cpu_cache()) > going wrong already - suggesting a some fundamental borkage in SLAB?
I think it's still pointing to the page allocator and/or setting up the zonelists...
> note, when i change SLAB to SLUB (and keep the config unchanged > otherwise), i get a similar early crash:
...especially considering you have similar crash with SLUB as well.
Now this:
[ 0.000999] ------------[ cut here ]------------ [ 0.000999] WARNING: at mm/slab.c:1685 cache_alloc_refill+0x2a6/0x4a3() [ 0.000999] Pid: 0, comm: swapper Not tainted 2.6.25-rc9 #924 [ 0.000999] [<c0121b6f>] warn_on_slowpath+0x3c/0x4c [ 0.000999] [<c0781873>] ? _spin_unlock_irqrestore+0xf/0x13 [ 0.000999] [<c02941ad>] ? delay_tsc+0x2e/0x4e [ 0.000999] [<c029414d>] ? __delay+0x9/0xb [ 0.000999] [<c0353db3>] ? serial8250_console_putchar+0x80/0x86 [ 0.000999] [<c0148822>] ? get_page_from_freelist+0x230/0x345 [ 0.000999] [<c0121eb1>] ? __call_console_drivers+0x56/0x63 [ 0.000999] [<c01489bb>] ? __alloc_pages+0x6e/0x2be [ 0.000999] [<c015bd2e>] cache_alloc_refill+0x2a6/0x4a3 [ 0.000999] [<c015ba3f>] kmem_cache_alloc+0x5b/0xa4
Says that alloc_pages_node() returned NULL early on in the boot. However, GFP_THISNODE is ruled out as this:
Index: linux/mm/page_alloc.c =================================================================== --- linux.orig/mm/page_alloc.c +++ linux/mm/page_alloc.c @@ -1485,6 +1485,7 @@ restart: * Happens if we have an empty zonelist as a result of * GFP_THISNODE being used on a memoryless node */ + WARN_ON(1); return NULL; }
does not trigger. Hmm...
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