The data byte count(DBC) read from the description information is defined for bits 21:00. Bits 30:22 are reserved and bit 31 is the Interrupt on Completion (I) flag. Completion interrupts are triggered after every transaction instead of on I-flag in QEMU. tbl_entry_size is a signed integer and improperly reading the DBC leads to a negative offset that causes sglist allocation to fail. Signed-off-by: Reza Jelveh <reza.jelveh@tuhh.de> Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org - QEMU team
Description
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