netdev - Re: [PATCH net] tcp: add sanity tests to TCP_QUEUE

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Date:   Mon, 01 Mar 2021 23:54:37 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        edumazet@...gle.com, xemul@...allels.com, ieatmuttonchuan@...il.com
Subject: Re: [PATCH net] tcp: add sanity tests to TCP_QUEUE_SEQ

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Mon,  1 Mar 2021 10:29:17 -0800 you wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> Qingyu Li reported a syzkaller bug where the repro
> changes RCV SEQ _after_ restoring data in the receive queue.
> 
> mprotect(0x4aa000, 12288, PROT_READ)    = 0
> mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
> mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
> mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
> socket(AF_INET6, SOCK_STREAM, IPPROTO_IP) = 3
> setsockopt(3, SOL_TCP, TCP_REPAIR, [1], 4) = 0
> connect(3, {sa_family=AF_INET6, sin6_port=htons(0), sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::1", &sin6_addr), sin6_scope_id=0}, 28) = 0
> setsockopt(3, SOL_TCP, TCP_REPAIR_QUEUE, [1], 4) = 0
> sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="0x0000000000000003\0\0", iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 20
> setsockopt(3, SOL_TCP, TCP_REPAIR, [0], 4) = 0
> setsockopt(3, SOL_TCP, TCP_QUEUE_SEQ, [128], 4) = 0
> recvfrom(3, NULL, 20, 0, NULL, NULL)    = -1 ECONNRESET (Connection reset by peer)
> 
> [...]

Here is the summary with links:
  - [net] tcp: add sanity tests to TCP_QUEUE_SEQ
    https://git.kernel.org/netdev/net/c/8811f4a9836e

You are awesome, thank you!
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