Am 04.01.2013 21:25, schrieb Lennert Buytenhek:
On Fri, Jan 04, 2013 at 03:07:02PM +0100, Lubomir Rintel wrote:
From: Lubomir Rintel <lubo.rin...@gooddata.com>
=================================
[ INFO: inconsistent lock state ]
3.7.0-6.luboskovo.fc19.armv5tel.kirkwood #1 Tainted: G W
---------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
NetworkManager/337 [HC0[0]:SC0[0]:HE1:SE1] takes:
(_xmit_ETHER#2){+.?...}, at: [<bf07adfc>] txq_reclaim+0x54/0x264 [mv643xx_eth]
I get the same annoying warning when the MTU gets changed (through dhcp).
Maybe I'm not reading it right, but I doubt that this is an actual
deadlock or that the patch is needed.
txq_reclaim() indeed doesn't disable BHs, but that's because it's
always called in BH context. Almost always -- the only exception is
txq_deinit(), called from ->ndo_stop(), but by that time we've
already napi_disable()'d and netif_carrier_off()'d and free_irq()'d.
Agreed. I've just read me through that too and don't think a deadlock is
possible.
How to explain that to lockdep, though, I don't know.
The patch helps with that. ;)
Regards,
Alexander
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