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Subject: Re: [PATCH] net/rds: Fix UBSAN: array-index-out-of-bounds in
 rds_cmsg_recv
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <170592302423.23374.3289939463686065448.git-patchwork-notify@kernel.org>
Date: Mon, 22 Jan 2024 11:30:24 +0000
References: <1705715319-19199-1-git-send-email-sharath.srinivasan@oracle.com>
In-Reply-To: <1705715319-19199-1-git-send-email-sharath.srinivasan@oracle.com>
To: Sharath Srinivasan <sharath.srinivasan@oracle.com>
Cc: santosh.shilimkar@oracle.com, netdev@vger.kernel.org,
 linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com,
 linux-kernel@vger.kernel.org, davem@davemloft.net, edumazet@google.com,
 kuba@kernel.org, pabeni@redhat.com, syzkaller@googlegroups.com,
 chenyuan0y@gmail.com, zzjas98@gmail.com, gerd.rausch@oracle.com,
 allison.henderson@oracle.com, aron.silverton@oracle.com

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Fri, 19 Jan 2024 17:48:39 -0800 you wrote:
> Syzcaller UBSAN crash occurs in rds_cmsg_recv(),
> which reads inc->i_rx_lat_trace[j + 1] with index 4 (3 + 1),
> but with array size of 4 (RDS_RX_MAX_TRACES).
> Here 'j' is assigned from rs->rs_rx_trace[i] and in-turn from
> trace.rx_trace_pos[i] in rds_recv_track_latency(),
> with both arrays sized 3 (RDS_MSG_RX_DGRAM_TRACE_MAX). So fix the
> off-by-one bounds check in rds_recv_track_latency() to prevent
> a potential crash in rds_cmsg_recv().
> 
> [...]

Here is the summary with links:
  - net/rds: Fix UBSAN: array-index-out-of-bounds in rds_cmsg_recv
    https://git.kernel.org/netdev/net/c/13e788deb734

You are awesome, thank you!
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