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SubjectRe: mm kernel oops with r8169 & named, PREEMPT
Danny <> :
> This is with the network driver r8169 and linux-2.6.9-rc4-mm1. Same
> thing happened with linux-2.6.9-rc3-mm3 (but also locked up).
> linux- didn't seem to have this problem. This is very
> repeatable, if this is an unknown issue let me know (CC please, not on
> the list) and I will jump through the hoops to get a useful oops.

Try the patch below (courtesy of Jon Mason, whitespaces may be wrong) and
see 1) if things perform better 2) if "timeout" messages appear in the
kernel log.

Oops as well as Cc: are welcome.

--- linux-2.6.9-rc4-mm1/drivers/net/r8169.c 2004-10-12 13:59:57.000000000 -0500
+++ linux-2.6.9-rc4-mm1/drivers/net/r8169.c 2004-10-12 10:51:21.000000000 -0500
@@ -1680,6 +1680,7 @@ static void rtl8169_unmap_tx_skb(struct

pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
desc->opts2 = 0x00;
+ desc->opts1 = 0x00;
desc->addr = 0x00;
tx_skb->len = 0;

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