Re: [Qemu-devel] [Qemu-block] [PATCH v2 0/3] linux-aio: fix "Co-routine re-entered recursively" error

[Stefan Hajnoczi]

On Tue, Sep 27, 2016 at 04:18:33PM +0100, Stefan Hajnoczi wrote:
> v2:
>  * Add missing backtrace in Patch 3
> 
> It's possible to hit the "Co-routine re-entered recursively" error with -drive
> format=qcow2,aio=native.  This is a regression introduced by a linux-aio.c
> optimization.  See Patch 3 for details.
> 
> Patches 1 & 2 add a new coroutine API called qemu_coroutine_entered() for
> checking whether a coroutine is currently "entered".  This makes it possible 
> to
> avoid re-entering coroutines recursively.
> 
> Stefan Hajnoczi (3):
>   coroutine: add qemu_coroutine_entered() function
>   test-coroutine: test qemu_coroutine_entered()
>   linux-aio: fix re-entrant completion processing
> 
>  block/linux-aio.c        |  9 ++++++---
>  include/qemu/coroutine.h | 13 +++++++++++++
>  tests/test-coroutine.c   | 42 ++++++++++++++++++++++++++++++++++++++++++
>  util/qemu-coroutine.c    |  5 +++++
>  4 files changed, 66 insertions(+), 3 deletions(-)
> 
> -- 
> 2.7.4
> 
> 

Thanks, applied to my block tree:
https://github.com/stefanha/qemu/commits/block

Stefan

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