netdev - Re: [PATCH bpf-next] bpf: sockmap calling sleepable function in teardown path

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Date:   Tue, 28 Jun 2022 07:40:13 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     John Fastabend <john.fastabend@...il.com>
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        jakub@...udflare.com, bpf@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH bpf-next] bpf: sockmap calling sleepable function in teardown
 path

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@...earbox.net>:

On Mon, 27 Jun 2022 20:58:03 -0700 you wrote:
> syzbot reproduced the BUG,
> 
>  BUG: sleeping function called from invalid context at kernel/workqueue.c:3010
> 
> with the following stack trace fragment
> 
>  start_flush_work kernel/workqueue.c:3010 [inline]
>  __flush_work+0x109/0xb10 kernel/workqueue.c:3074
>  __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3162
>  sk_psock_stop+0x4cb/0x630 net/core/skmsg.c:802
>  sock_map_destroy+0x333/0x760 net/core/sock_map.c:1581
>  inet_csk_destroy_sock+0x196/0x440 net/ipv4/inet_connection_sock.c:1130
>  __tcp_close+0xd5b/0x12b0 net/ipv4/tcp.c:2897
>  tcp_close+0x29/0xc0 net/ipv4/tcp.c:2909
> 
> [...]

Here is the summary with links:
  - [bpf-next] bpf: sockmap calling sleepable function in teardown path
    https://git.kernel.org/bpf/bpf-next/c/697fb80a5364

You are awesome, thank you!
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