RDMA: Protect RDMA memory regions #1602
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Use Linux syscall mmap/munmap to manage a RDMA memory region, then we have a guard page protected VMA like (cat /proc/PID/maps): 785018afe000-785018aff000 ---p 00000000 00:00 0 -> top guard page 785018aff000-785018bff000 rw-p 00000000 00:00 0 -> RDMA memory region 785018bff000-785018c00000 ---p 00000000 00:00 0 -> bottom guard page Once any code accesses memory unexpectedly, segment fault occurs. Signed-off-by: zhenwei pi <[email protected]> Signed-off-by: zhenwei pi <[email protected]>
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## unstable #1602 +/- ##
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+ Coverage 70.80% 70.99% +0.18%
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Files 121 121
Lines 65132 65132
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+ Hits 46118 46238 +120
+ Misses 19014 18894 -120
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Use Linux syscall mmap/munmap to manage a RDMA memory region, then we have a guard page protected VMA like (cat /proc/PID/maps):
785018afe000-785018aff000 ---p 00000000 00:00 0 -> top guard page
785018aff000-785018bff000 rw-p 00000000 00:00 0 -> RDMA memory region
785018bff000-785018c00000 ---p 00000000 00:00 0 -> bottom guard page
Once any code accesses memory unexpectedly, segment fault occurs.