Idan Horowitz a49b7e92eb Kernel: Shrink instead of expand sigaltstack range to page boundaries ...

Since the POSIX sigaltstack manpage suggests allocating the stack
region using malloc(), and many heap implementations (including ours)
store heap chunk metadata in memory just before the vended pointer,
we would end up zeroing the metadata, leading to various crashes.

2023-12-24 16:11:35 +01:00

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