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Re: [Qemu-devel] [PATCH 1/3] coroutine: Fix use after free with qemu_cor

From: Kevin Wolf
Subject: Re: [Qemu-devel] [PATCH 1/3] coroutine: Fix use after free with qemu_coroutine_yield()
Date: Fri, 20 Feb 2015 16:05:01 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

Am 10.02.2015 um 11:41 hat Kevin Wolf geschrieben:
> Instead of using the same function for entering and exiting coroutines,
> and hoping that it doesn't add any functionality that hurts with the
> parameters used for exiting, we can just directly call into the real
> task switch in qemu_coroutine_switch().
> This fixes a use-after-free scenario where reentering a coroutine that
> has yielded still accesses the old parent coroutine (which may have
> meanwhile terminated) in the part of coroutine_swap() that follows
> qemu_coroutine_switch().
> Signed-off-by: Kevin Wolf <address@hidden>

Cc: address@hidden

Thanks to Peter for noticing that I forgot this.


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