On 25.08.2014 10:56, Paolo Bonzini wrote:
Il 24/08/2014 21:31, Peter Lieven ha scritto:
Am 24.08.2014 um 18:30 schrieb Paolo Bonzini:
Il 22/08/2014 10:42, Kevin Wolf ha scritto:
Unfortunately, I missed that one. The zeroblock is typicalls 512 Byte or 4K 
depending
on the blocksize.
I don't remember the details, but I think when I went through all
drivers, I couldn't convince myself that a reasonable block size is
enforced somewhere. So I just went ahead and converted the call to be on
the safe side. It can never hurt anyway.
Yeah, a malicious iSCSI target could have unreasonable block sizes.
Maybe we should just allow 512b or 4kb blocksize and refuse
all other?
At least CDs and DVDs use 2kb blocksize. :)

power of 2 && <= 4096 ?


Paolo



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