Date: Tue, 29 Aug 2017 20:06:31 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 221919] ixl: TX queue hang when using TSO and having a high and mixed network load Message-ID: <bug-221919-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221919 Bug ID: 221919 Summary: ixl: TX queue hang when using TSO and having a high and mixed network load Product: Base System Version: 11.1-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: nikita@elyzion.net In my scenario, when having an hundred of iscsi sessions that are doing a l= oad of around 10Gib (but it happen with a smaller load less often too) of mixed RX/TX, my XL710-DA2 cards start to flap with the following output in dmesg: ``` ... kernel: ixl0: WARNING: queue 4 appears to be hung! kernel: ixl0: WARNING: Resetting! kernel: ixl0: Malicious Driver Detection event 2 on TX queue 0, pf=20 number 0 kernel: ixl0: MDD TX event is for this function!=20 ... kernel: ixl0: Interface stopped DISTRIBUTING, possible flapping ... ``` (and then a lot iscsi session drop due to the flap) It happens, during the network load, something like every 5min. It seems to me to be related to TSO because when I have disabled it, the bug was gone and I was unable to reproduce it anymore. Reenabling TSO make the = bug appearing again. My FW : dev.ixl.0.fw_version: fw 5.0.40043 api 1.5 nvm 5.05 etid 800028a6 o= em 1.262.0 But I also reproduced it with fw 4.33.31377 api 1.2 nvm 4.42 --=20 You are receiving this mail because: You are the assignee for the bug.=
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