Re: Slab panic on 2.6.19-rc3-git5 (-git4 was OK)

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Hi,

On 10/29/06, Martin J. Bligh <[email protected]> wrote:
-git4 was fine. -git5 is broken (on PPC64 blade)

As -rc2-mm2 seemed fine on this box, I'm guessing it's something
that didn't go via Andrew ;-( Looks like it might be something
JFS or slab specific. Bigger PPC64 box with different config
was OK though.

Full log is here: http://test.kernel.org/abat/59046/debug/console.log
Good -git4 run: http://test.kernel.org/abat/58997/debug/console.log

kernel BUG in cache_grow at mm/slab.c:2705!
cpu 0x1: Vector: 700 (Program Check) at [c0000000fffb7710]
     pc: c0000000000c8ad4: .cache_grow+0x64/0x4f0
     lr: c0000000000c91a8: .cache_alloc_refill+0x248/0x2cc
     sp: c0000000fffb7990
    msr: 8000000000021032
   current = 0xc0000000fffab800
   paca    = 0xc00000000047e780
     pid   = 1, comm = swapper
kernel BUG in cache_grow at mm/slab.c:2705!
enter ? for help
[c0000000fffb7a60] c0000000000c91a8 .cache_alloc_refill+0x248/0x2cc
[c0000000fffb7b20] c0000000000c9708 .kmem_cache_alloc_node+0xd0/0x10c
[c0000000fffb7bc0] c0000000000b69cc .__get_vm_area_node+0xcc/0x230
[c0000000fffb7c70] c0000000000b7640 .__vmalloc_node+0x60/0xc0
[c0000000fffb7d10] c0000000001ad4c8 .txInit+0x2a0/0x3a8
[c0000000fffb7e20] c00000000044c1ec .init_jfs_fs+0x78/0x27c
[c0000000fffb7ec0] c0000000000094c0 .init+0x1f4/0x3e4
[c0000000fffb7f90] c000000000027270 .kernel_thread+0x4c/0x68

I only skimmed through this briefly but it looks like due to
52fd24ca1db3a741f144bbc229beefe044202cac __get_vm_area_node is passing
GFP_HIGHMEM to kmem_cache_alloc_node which is a no-no.
-
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