Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413

[Eric Dumazet <eric.dumazet@gmail.com>]

Le lundi 21 novembre 2011 A  16:36 +0100, Markus Trippelsdorf a A(C)crit :
> On 2011.11.21 at 15:16 +0100, Eric Dumazet wrote:
> > Le lundi 21 novembre 2011 A  14:15 +0100, Markus Trippelsdorf a A(C)crit :
> > 
> > > I've enabled CONFIG_SLUB_DEBUG_ON and this is what happend:
> > > 
> > 
> > Thanks
> > 
> > Please continue to provide more samples.
> > 
> > There is something wrong somewhere, but where exactly, its hard to say.
> 
> New sample. This one points to lib/idr.c:
> 
> [drm] Initialized drm 1.1.0 20060810
> [drm] radeon defaulting to kernel modesetting.
> [drm] radeon kernel modesetting enabled.
> radeon 0000:01:05.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
> radeon 0000:01:05.0: setting latency timer to 64
> [drm] initializing kernel modesetting (RS780 0x1002:0x9614 0x1043:0x834D).
> [drm] register mmio base: 0xFBEE0000
> [drm] register mmio size: 65536
> ATOM BIOS: 113
> radeon 0000:01:05.0: VRAM: 128M 0x00000000C0000000 - 0x00000000C7FFFFFF (128M used)
> radeon 0000:01:05.0: GTT: 512M 0x00000000A0000000 - 0x00000000BFFFFFFF
> [drm] Detected VRAM RAM=128M, BAR=128M
> [drm] RAM width 32bits DDR
> [TTM] Zone  kernel: Available graphics memory: 4083428 kiB.
> [TTM] Zone   dma32: Available graphics memory: 2097152 kiB.
> [TTM] Initializing pool allocator.
> [drm] radeon: 128M of VRAM memory ready
> [drm] radeon: 512M of GTT memory ready.
> [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
> [drm] Driver supports precise vblank timestamp query.
> [drm] radeon: irq initialized.
> [drm] GART: num cpu pages 131072, num gpu pages 131072
> [drm] Loading RS780 Microcode
> [drm] PCIE GART of 512M enabled (table at 0x00000000C0040000).
> radeon 0000:01:05.0: WB enabled
> [drm] ring test succeeded in 1 usecs
> [drm] radeon: ib pool ready.
> [drm] ib test succeeded in 0 usecs
> =============================================================================
> BUG idr_layer_cache: Poison overwritten
> -----------------------------------------------------------------------------

Thanks, could you now add "CONFIG_DEBUG_PAGEALLOC=y" in your config as
well ?



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