So it seems to have changed a bit. At the moment, it crashes for me with SIGSYS 0x0000000000000040 (=[sendfile](https://filippo.io/linux-syscall-table/)).
Bug 1619585 Comment 65 Edit History
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So it seems to have changed a bit. At the moment, it crashes for me with SIGSYS 0x0000000000000040 ~~(=[sendfile](https://filippo.io/linux-syscall-table/)).~~