Messages in this thread | | | Date | Fri, 4 Apr 2008 22:15:43 +0300 (EEST) | From | "Ilpo Järvinen" <> | Subject | Re: Linux 2.6.25-rc6: WARNING: at net/ipv4/tcp_input.c:2510 |
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On Fri, 4 Apr 2008, Georgi Chorbadzhiyski wrote:
> Around 04/03/08 13:17, Ilpo Järvinen scribbled: > > On Thu, 27 Mar 2008, Georgi Chorbadzhiyski wrote: > > > >> A week ago I updated one of my servers to 2.6.25-rc6 and today looking > >> through logs I've found these: > >> > >> [380219.823434] ------------[ cut here ]------------ > >> [380219.823450] WARNING: at net/ipv4/tcp_input.c:2510 tcp_ack+0xc7e/0x177d() > > > > Is this reproducable for you? If yes, is it possible for you to run > > Not in the moment. > > I'm not getting such errors in the log since my last report. Today I'll > update to latest -git and will restart the server.
Yeah, the reason why these still happen is that they are quite hard to hit.
> The machine that gave me this error is a http and ftp server handling not > very busy distro mirror (if this can give you any clues). > > > processing expensive verification of TCP state (validates TCP write queue > > invariants multiple times per ACK by scanning through the write queue) on > > such machine? > > How to run such a thing, can you give me some pointers?
I sent the patch recently to netdev/lkml:
http://marc.info/?l=linux-netdev&m=120733529216457&w=2
But it's very expensive in processing wise so it might not be wise to put it in if performance is important for you.
-- i. | |