Hi Naresh, On 09/10/2023 22:43, Naresh Kamboju wrote: > On Mon, 9 Oct 2023 at 18:46, Greg Kroah-Hartman > <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: >> >> This is the start of the stable review cycle for the 6.1.57 release. >> There are 162 patches in this series, all will be posted as a response >> to this one. If anyone has any issues with these being applied, please >> let me know. >> >> Responses should be made by Wed, 11 Oct 2023 13:00:55 +0000. >> Anything received after that time might be too late. >> >> The whole patch series can be found in one patch at: >> https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.57-rc1.gz >> or in the git tree and branch at: >> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y >> and the diffstat can be found below. >> >> thanks, >> >> greg k-h > > > The following kernel warnings were noticed several times on arm x15 devices > running stable-rc 6.1.57-rc1 while running selftests: net: mptcp_connect.sh > and netfilter: nft_fib.sh. > > The possible unsafe locking scenario detected. > > FYI, > Stable-rc/ linux.6.1.y kernel running stable/ linux.6.5.y selftest in this case. > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > kselftest: Running tests in net/mptcp Thank you for having reported the issue and having added MPTCP ML in Cc! Just to avoid confusions: the "WARNING" you shared when running 'mptcp_connect.sh' selftest appeared before creating the first MPTCP connection. It looks like there is no reference to MPTCP in the calltraces. Also, because you have the same issue with nft_fib.sh, I would say that this issue is not linked to MPTCP but rather to a recent modification in the IPv6 stack. By chance, did you start a "git bisect" to identify the commit causing this issue? Cheers, Matt -- Tessares | Belgium | Hybrid Access Solutions www.tessares.net