netdev - Re: [PATCH v3 net] net: Fix load-tearing on sk->sk_stamp in sock_recv

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: 
 <168368942178.11333.808708812633442353.git-patchwork-notify@kernel.org>
Date: Wed, 10 May 2023 03:30:21 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Kuniyuki Iwashima <kuniyu@...zon.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, kuni1840@...il.com, netdev@...r.kernel.org,
 syzkaller@...glegroups.com
Subject: Re: [PATCH v3 net] net: Fix load-tearing on sk->sk_stamp in
 sock_recv_cmsgs().

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Mon, 8 May 2023 10:55:43 -0700 you wrote:
> KCSAN found a data race in sock_recv_cmsgs() where the read access
> to sk->sk_stamp needs READ_ONCE().
> 
> BUG: KCSAN: data-race in packet_recvmsg / packet_recvmsg
> 
> write (marked) to 0xffff88803c81f258 of 8 bytes by task 19171 on cpu 0:
>  sock_write_timestamp include/net/sock.h:2670 [inline]
>  sock_recv_cmsgs include/net/sock.h:2722 [inline]
>  packet_recvmsg+0xb97/0xd00 net/packet/af_packet.c:3489
>  sock_recvmsg_nosec net/socket.c:1019 [inline]
>  sock_recvmsg+0x11a/0x130 net/socket.c:1040
>  sock_read_iter+0x176/0x220 net/socket.c:1118
>  call_read_iter include/linux/fs.h:1845 [inline]
>  new_sync_read fs/read_write.c:389 [inline]
>  vfs_read+0x5e0/0x630 fs/read_write.c:470
>  ksys_read+0x163/0x1a0 fs/read_write.c:613
>  __do_sys_read fs/read_write.c:623 [inline]
>  __se_sys_read fs/read_write.c:621 [inline]
>  __x64_sys_read+0x41/0x50 fs/read_write.c:621
>  do_syscall_x64 arch/x86/entry/common.c:50 [inline]
>  do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
>  entry_SYSCALL_64_after_hwframe+0x72/0xdc
> 
> [...]

Here is the summary with links:
  - [v3,net] net: Fix load-tearing on sk->sk_stamp in sock_recv_cmsgs().
    https://git.kernel.org/netdev/net/c/dfd9248c071a

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html