mm/slab: ppc: ubi: kmalloc_slab WARNING / PPC + UBI driver

Aaro Koskinen aaro.koskinen at iki.fi
Thu Aug 1 03:34:34 EST 2013


Hi,

On Wed, Jul 31, 2013 at 01:42:31PM +0200, Wladislav Wiebe wrote:
> DEBUG: xxx kmalloc_slab, requested 'size' = 8388608, KMALLOC_MAX_SIZE = 4194304
[...]
> [ccd3be60] [c0099fd4] kmalloc_slab+0x48/0xe8 (unreliable)
> [ccd3be70] [c00ae650] __kmalloc+0x20/0x1b4
> [ccd3be90] [c00d46f4] seq_read+0x2a4/0x540
> [ccd3bee0] [c00fe09c] proc_reg_read+0x5c/0x90
> [ccd3bef0] [c00b4e1c] vfs_read+0xa4/0x150
> [ccd3bf10] [c00b500c] SyS_read+0x4c/0x84
> [ccd3bf40] [c000be80] ret_from_syscall+0x0/0x3c

It seems some procfs file is trying to dump 8 MB at a single go. You
need to fix that to return data in smaller chunks. What file is it?

A.


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