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Re: [Qemu-devel] [PATCH v3] linux-user: allocate heap memory for execve
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From: |
Eric Blake |
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Subject: |
Re: [Qemu-devel] [PATCH v3] linux-user: allocate heap memory for execve arguments |
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Date: |
Tue, 7 Mar 2017 08:12:10 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 |
On 03/07/2017 01:21 AM, P J P wrote:
> From: Prasad J Pandit <address@hidden>
>
> Arguments passed to execve(2) call from user program could
> be large, allocating stack memory for them via alloca(3) call
> would lead to bad behaviour. Use 'g_new0' to allocate memory
> for such arguments.
>
> Reported-by: Jann Horn <address@hidden>
> Signed-off-by: Prasad J Pandit <address@hidden>
> ---
> linux-user/syscall.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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