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Re: [Qemu-devel] [PATCH v4 0/2] char-socket: Fix race condition


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH v4 0/2] char-socket: Fix race condition
Date: Wed, 21 Aug 2019 10:18:42 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 12/08/19 17:58, Andrey Shinkevich wrote:
> This fixes a race condition in which the tcp_chr_read() ioc handler
> can close a connection that is being written to from another thread.
> 
> v4:
>     The functions qemu_idle_add() and tcp_chr_be_event_closed() were removed
>     because the callback is invoked after the call to 
> object_property_del_all()
>     so, the "chardev" object had been deleted and the segmentation fault 
> occurs.
>     Let's please apply the Alberto's simplified series to avoid the race 
> condition.
> 
> v3:
>     See the email thread with the Message ID
>     <address@hidden>
> 
> Alberto Garcia (2):
>   main-loop: Fix GSource leak in qio_task_thread_worker()
>   char-socket: Lock tcp_chr_disconnect()
> 
>  chardev/char-socket.c | 16 +++++++++++++---
>  io/task.c             |  1 +
>  2 files changed, 14 insertions(+), 3 deletions(-)
> 

Queued, thanks.

Paolo



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