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a12ce28224
It was possible for `arg6` to be passed as an operand relative to esp. In that case, the `push` at the top clobbered esp and hence made the reference to arg6 invalid. This was manifesting in this branch as broken stack traces on x86-linux due to an `mmap2` syscall accidentally passing the page offset as non-zero! This commit fixes a bug introduced in cb0e6d8aa.