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Date: Wed, 22 Dec 2010 17:54:09 +0100 From: Eric Dumazet <eric.dumazet@...il.com> To: Alexey Vlasov <renton@...ton.name> Cc: linux-kernel@...r.kernel.org Subject: Re: 2.6.36.2 - loop on read /proc/net/tcp Le mercredi 22 décembre 2010 à 16:43 +0300, Alexey Vlasov a écrit : > Hi. > > Has anyone seen such a bug at 2.6.36.2? > # netstat -ntl > Active Internet connections (only servers) > Proto Recv-Q Send-Q Local Address Foreign Address State > tcp 0 0 81.176.228.2:60608 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:8099 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:8099 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.7:8099 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:8100 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:8100 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:8101 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:8101 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:20037 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:8102 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:8102 0.0.0.0:* LISTEN > tcp 0 0 127.0.0.1:3399 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:20040 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:38985 0.0.0.0:* LISTEN > tcp 0 0 0.0.0.0:873 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:20041 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:20042 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:3306 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.3:3306 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.2:3306 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:9099 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:9099 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:20043 0.0.0.0:* LISTEN > tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:9100 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:9100 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:20044 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.5:33549 0.0.0.0:* LISTEN > ... > First 30 lines are ok > > but then go lines repeating in "eternal" loop: > tcp 0 0 81.176.228.2:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.3:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.7:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.2:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.3:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.7:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.2:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.3:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.4:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.7:80 0.0.0.0:* LISTEN > tcp 0 0 81.176.228.2:80 0.0.0.0:* LISTEN > > # cat /proc/net/tcp > ... > It can hang an hour or so. but not always actually. Ouch... Hmm, yes, I think I can do something about it, thanks for the report -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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