Launchpad has imported 4 comments from the remote bug at https://bugzilla.kernel.org/show_bug.cgi?id=194569.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2017-02-12T22:39:08+00:00 caravena wrote: Open bug in launchpad.net https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664072 "dmesg: [ 7578.057461] TCP: wlp1s0: Driver has suspect GRO implementation, TCP performance may be compromised." Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664072/comments/2 ------------------------------------------------------------------------ On 2018-06-05T12:03:22+00:00 pedretti.fabio wrote: This harmless warning should be fixed backporting [0] to 4.9 series. [0] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0b9aefea860063bb39e36bd7fe6c7087fed0ba87 Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664072/comments/5 ------------------------------------------------------------------------ On 2018-06-08T15:15:25+00:00 marcelo.leitner wrote: I went over iwlwifi commits since then and I couldn't find any issue regarding TCP/GSO. That said, I agree that it seems to be harmless in that setup and that backporting 0b9aefea860063bb39e36bd7fe6c7087fed0ba87 should help on identifying if it's a false-positive or not. Someone needs to send an email to netdev@ asking for it, though. kernel bugzilla is not how it's done for networking subsystem. More info in ./Documentation/networking/netdev-FAQ.txt . Thanks. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664072/comments/6 ------------------------------------------------------------------------ On 2018-06-08T15:40:05+00:00 pedretti.fabio wrote: BTW, I had this same warning with vmxnet3 driver with 4.9. I tried a newer kernel and the message didn't appear. I posted my findings here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864642#95 - for reference: === It looks like the warning appeared with this first commit: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dcb17d22e1c2cd72e72190c736349a675362b3bc but was later corrected with this second one: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0b9aefea860063bb39e36bd7fe6c7087fed0ba87 The first commit was merged in the 4.9 tree, but not the second one (at least not up to 4.9.106), and was only merged in 4.11. So I would conclude the warning may be harmless, unless you got it on a >= 4.11 kernel. And I also verified I don't get it on such a newer kernel. I would close this bug, but it may eventually be nice to backport the second commit in 4.9 to avoid the harmless warning. === Searching on the net, there are other reports with the same issue and with various other drivers. I added in CC: here the net/ipv4 maintainers I found in MAINTAINERS file: NETWORKING [IPv4/IPv6] M: "David S. Miller" <da...@davemloft.net> M: Alexey Kuznetsov <kuz...@ms2.inr.ac.ru> M: Hideaki YOSHIFUJI <yoshf...@linux-ipv6.org> L: net...@vger.kernel.org T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git S: Maintained F: net/ipv4/ F: net/ipv6/ F: include/net/ip* F: arch/x86/net/* Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1664072/comments/7 ** Changed in: linux Status: Unknown => Confirmed ** Changed in: linux Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1664072 Title: TCP: wlp1s0: Driver has suspect GRO implementation, TCP performance may be compromised. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1664072/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
