The only difference is the test constant: 0x10 for a data segment load, 0x15 for a far call target.
The Sentry intercepts the untrusted code’s syscalls and handles them in user-space. It reimplements around 200 Linux syscalls in Go, which is enough to run most applications. When the Sentry actually needs to interact with the host to read a file, it makes its own highly restricted set of roughly 70 host syscalls. This is not just a smaller filter on the same surface; it is a completely different surface. The failure mode changes significantly. An attacker must first find a bug in gVisor’s Go implementation of a syscall to compromise the Sentry process, and then find a way to escape from the Sentry to the host using only those limited host syscalls.
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Медведев вышел в финал турнира в Дубае17:59
第四十七条 纳税人出口货物或者跨境销售服务、无形资产(以下统称出口业务),依照增值税法第三十三条的规定申报办理退(免)税的,按照国务院规定的出口退税率,通过免抵退税办法或者免退税办法计算退(免)税额,经税务机关审核通过后,办理退(免)税。
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