netdev - Re: [PATCH net v2] net: avoid race between device unregistration and ethnl ops

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Message-Id: 
 <173725203448.2534672.1226229383765943394.git-patchwork-notify@kernel.org>
Date: Sun, 19 Jan 2025 02:00:34 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Antoine Tenart <atenart@...nel.org>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 edumazet@...gle.com, ecree.xilinx@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net v2] net: avoid race between device unregistration and
 ethnl ops

Hello:

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

On Thu, 16 Jan 2025 10:21:57 +0100 you wrote:
> The following trace can be seen if a device is being unregistered while
> its number of channels are being modified.
> 
>   DEBUG_LOCKS_WARN_ON(lock->magic != lock)
>   WARNING: CPU: 3 PID: 3754 at kernel/locking/mutex.c:564 __mutex_lock+0xc8a/0x1120
>   CPU: 3 UID: 0 PID: 3754 Comm: ethtool Not tainted 6.13.0-rc6+ #771
>   RIP: 0010:__mutex_lock+0xc8a/0x1120
>   Call Trace:
>    <TASK>
>    ethtool_check_max_channel+0x1ea/0x880
>    ethnl_set_channels+0x3c3/0xb10
>    ethnl_default_set_doit+0x306/0x650
>    genl_family_rcv_msg_doit+0x1e3/0x2c0
>    genl_rcv_msg+0x432/0x6f0
>    netlink_rcv_skb+0x13d/0x3b0
>    genl_rcv+0x28/0x40
>    netlink_unicast+0x42e/0x720
>    netlink_sendmsg+0x765/0xc20
>    __sys_sendto+0x3ac/0x420
>    __x64_sys_sendto+0xe0/0x1c0
>    do_syscall_64+0x95/0x180
>    entry_SYSCALL_64_after_hwframe+0x76/0x7e
> 
> [...]

Here is the summary with links:
  - [net,v2] net: avoid race between device unregistration and ethnl ops
    https://git.kernel.org/netdev/net/c/12e070eb6964

You are awesome, thank you!
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