netdev - Re: Possible bug in TCP retry logic/Kernel crash

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Message-ID: <0d553faa-b665-14cf-e977-d2b0ff3d763e@gmail.com>
Date:   Sun, 10 Nov 2019 15:47:59 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Avinash Patil <avinashapatil@...il.com>, netdev@...r.kernel.org
Subject: Re: Possible bug in TCP retry logic/Kernel crash



On 11/9/19 9:59 PM, Avinash Patil wrote:
> Hi everyone,
> 
> Kernel: Linux 4.19.35 kernel built from linux-stable
> 

This is quite an old version.

Please upgrade to the latest one.

$ git log --oneline v4.19.35..v4.19.82 -- net/ipv4/tcp*c
3fdcf6a88ded2bb5c3c0f0aabaff253dd3564013 tcp: better handle TCP_USER_TIMEOUT in SYN_SENT state
67fe3b94a833779caf4504ececa7097fba9b2627 tcp: fix tcp_ecn_withdraw_cwr() to clear TCP_ECN_QUEUE_CWR
5977bc19ce7f1ed25bf20d09d8e93e56873a9abb tcp: remove empty skb from write queue in error cases
6f3126379879bb2b9148174f0a4b6b65e04dede9 tcp: inherit timestamp on mtu probe
1b200acde418f4d6d87279d3f6f976ebf188f272 tcp: Reset bytes_acked and bytes_received when disconnecting
c60f57dfe995172c2f01e59266e3ffa3419c6cd9 tcp: fix tcp_set_congestion_control() use from bpf hook
6323c238bb4374d1477348cfbd5854f2bebe9a21 tcp: be more careful in tcp_fragment()
dad3a9314ac95dedc007bc7dacacb396ea10e376 tcp: refine memory limit test in tcp_fragment()
59222807fcc99951dc769cd50e132e319d73d699 tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()
7f9f8a37e563c67b24ccd57da1d541a95538e8d9 tcp: add tcp_min_snd_mss sysctl
ec83921899a571ad70d582934ee9e3e07f478848 tcp: tcp_fragment() should apply sane memory limits
c09be31461ed140976c60a87364415454a2c3d42 tcp: limit payload size of sacked skbs
6728c6174a47b8a04ceec89aca9e1195dee7ff6b tcp: tcp_grow_window() needs to respect tcp_space()