netdev - Re: [PATCH net] team: better TEAM_OPTION_TYPE

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Message-Id: 
 <173946543582.1295234.1199639571668692011.git-patchwork-notify@kernel.org>
Date: Thu, 13 Feb 2025 16:50:35 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Eric Dumazet <edumazet@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 netdev@...r.kernel.org, horms@...nel.org, eric.dumazet@...il.com,
 syzbot+1fcd957a82e3a1baa94d@...kaller.appspotmail.com, jiri@...dia.com
Subject: Re: [PATCH net] team: better TEAM_OPTION_TYPE_STRING validation

Hello:

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

On Wed, 12 Feb 2025 13:49:28 +0000 you wrote:
> syzbot reported following splat [1]
> 
> Make sure user-provided data contains one nul byte.
> 
> [1]
>  BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:633 [inline]
>  BUG: KMSAN: uninit-value in string+0x3ec/0x5f0 lib/vsprintf.c:714
>   string_nocheck lib/vsprintf.c:633 [inline]
>   string+0x3ec/0x5f0 lib/vsprintf.c:714
>   vsnprintf+0xa5d/0x1960 lib/vsprintf.c:2843
>   __request_module+0x252/0x9f0 kernel/module/kmod.c:149
>   team_mode_get drivers/net/team/team_core.c:480 [inline]
>   team_change_mode drivers/net/team/team_core.c:607 [inline]
>   team_mode_option_set+0x437/0x970 drivers/net/team/team_core.c:1401
>   team_option_set drivers/net/team/team_core.c:375 [inline]
>   team_nl_options_set_doit+0x1339/0x1f90 drivers/net/team/team_core.c:2662
>   genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
>   genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
>   genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210
>   netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2543
>   genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219
>   netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
>   netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1348
>   netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1892
>   sock_sendmsg_nosec net/socket.c:718 [inline]
>   __sock_sendmsg+0x30f/0x380 net/socket.c:733
>   ____sys_sendmsg+0x877/0xb60 net/socket.c:2573
>   ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2627
>   __sys_sendmsg net/socket.c:2659 [inline]
>   __do_sys_sendmsg net/socket.c:2664 [inline]
>   __se_sys_sendmsg net/socket.c:2662 [inline]
>   __x64_sys_sendmsg+0x212/0x3c0 net/socket.c:2662
>   x64_sys_call+0x2ed6/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:47
>   do_syscall_x64 arch/x86/entry/common.c:52 [inline]
>   do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
>  entry_SYSCALL_64_after_hwframe+0x77/0x7f
> 
> [...]

Here is the summary with links:
  - [net] team: better TEAM_OPTION_TYPE_STRING validation
    https://git.kernel.org/netdev/net/c/5bef3ac184b5

You are awesome, thank you!
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