proc: Add /proc/sys/kernel/randomize_va_space#12864
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Expose randomize_va_space in procfs with a static value of 2 (full randomization), matching gVisor's actual ASLR behavior. gVisor always applies full ASLR for user memory mappings, so we report the value 2 to match the actual behavior. This fixes programs(e.g. https://github.com/psf/pyperf) that read this file to collect ASLR metadata and fail with ENOENT when the file is missing. Signed-off-by: Tan Yifeng <yiftan@tencent.com>
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proc: Add /proc/sys/kernel/randomize_va_space
Expose randomize_va_space in procfs with a static value of 2 (full randomization), matching gVisor's actual ASLR behavior.
gVisor always applies full ASLR for user memory mappings, so we report the value 2 to match the actual behavior.
This fixes programs(e.g. https://github.com/psf/pyperf) that read this file to collect ASLR metadata and fail with ENOENT when the file is missing.
FUTURE_COPYBARA_INTEGRATE_REVIEW=#12814 from tanyifeng:proc-randomize-va-space d29516d