Please help: possible deadlock in kmem_alloc

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Hello,

I have a Fedora Core 3 system (kernel 2.6.9-1.667smp) with an XFS filesystem 
and  from time to time the system crashes with errors like this on the 
console (excerpts):

[<0213d396>] __alloc_pages+0x28b/0x298
[<0213d3bb>] __get_free_pages+0x18/0x24
[<0213fc88>] kmem_getpages+0x1c/0xbb
[<021407d9>] cache_grow+0xae/0x136
[<021409c6>] cache_alloc_refill+0x165/0x19d
[<02140d9d>] __kmalloc+0x76/0x88
[<82a3ee20>] kmem_alloc+0x50/0x9e [xfs]
[<82a22be6>] xfs_iread_extents+0x73/0xc4 [xfs]
[<82a0319a>] xfs_bmapi+0x2de/0x12bf [xfs]
[<02263fa6>] sk_reset_timer+0xc/0x16
[<0228ebee>] tcp_write_xmit+0x109/0x24c
[<022641b2>] release_sock+0xf/0x4f
[...]
possible deadlock in kmem_alloc (mode: 0xd0)
possible deadlock in kmem_alloc (mode: 0xd0)
possible deadlock in kmem_alloc (mode: 0xd0)
possible deadlock in kmem_alloc (mode: 0xd0)
Debug: sleeping function called from invalid context at mm/slab.c:2063

Ive been googling a lot about this errors but all I found were old threads 
about kernel 2.1 or 2.4.

Can somebody help me to figure out what is goig on? The system is in 
production (the XFS filesystem is an attached SCSI raid applicance) and I may 
not have the full freedom to try different kernels or distribution at will. 
At this point, I am interested to figure out what exactly the problem is.

Thank you,
  Radu Filip
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