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[tsan] Increase size of shadow mappings for C/C++ on linux/x86_64 #70517

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Merged
merged 3 commits into from
Nov 2, 2023
Merged

[tsan] Increase size of shadow mappings for C/C++ on linux/x86_64 #70517

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0535a5d
[tsan] Increase size of shadow mappings for C/C++ on linux/x86_64
thurstond Oct 27, 2023
7464677
Increase size of low app mem region even more (to 4TB)
thurstond Oct 28, 2023
f908cc3
Redistribute memory regions from 4/5/4TB (low/mid/high) to 2/5/6TB.
thurstond Oct 28, 2023
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43 changes: 21 additions & 22 deletions compiler-rt/lib/tsan/rtl/tsan_platform.h
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Original file line number Diff line number Diff line change
Expand Up @@ -46,17 +46,16 @@ enum {

/*
C/C++ on linux/x86_64 and freebsd/x86_64
0000 0000 1000 - 0080 0000 0000: main binary and/or MAP_32BIT mappings (512GB)
0040 0000 0000 - 0100 0000 0000: -
0100 0000 0000 - 1000 0000 0000: shadow
1000 0000 0000 - 3000 0000 0000: -
3000 0000 0000 - 3400 0000 0000: metainfo (memory blocks and sync objects)
3400 0000 0000 - 5500 0000 0000: -
5500 0000 0000 - 5680 0000 0000: pie binaries without ASLR or on 4.1+ kernels
5680 0000 0000 - 7d00 0000 0000: -
7b00 0000 0000 - 7c00 0000 0000: heap
7c00 0000 0000 - 7e80 0000 0000: -
7e80 0000 0000 - 8000 0000 0000: modules and main thread stack
0000 0000 1000 - 0200 0000 0000: main binary and/or MAP_32BIT mappings (2TB)
0200 0000 0000 - 1000 0000 0000: -
1000 0000 0000 - 3000 0000 0000: shadow (32TB)
3000 0000 0000 - 3800 0000 0000: metainfo (memory blocks and sync objects; 8TB)
3800 0000 0000 - 5500 0000 0000: -
5500 0000 0000 - 5a00 0000 0000: pie binaries without ASLR or on 4.1+ kernels
5a00 0000 0000 - 7200 0000 0000: -
7200 0000 0000 - 7300 0000 0000: heap (1TB)
7300 0000 0000 - 7a00 0000 0000: -
7a00 0000 0000 - 8000 0000 0000: modules and main thread stack (6TB)

C/C++ on netbsd/amd64 can reuse the same mapping:
* The address space starts from 0x1000 (option with 0x0) and ends with
Expand All @@ -72,20 +71,20 @@ C/C++ on netbsd/amd64 can reuse the same mapping:
*/
struct Mapping48AddressSpace {
static const uptr kMetaShadowBeg = 0x300000000000ull;
static const uptr kMetaShadowEnd = 0x340000000000ull;
static const uptr kShadowBeg = 0x010000000000ull;
static const uptr kShadowEnd = 0x100000000000ull;
static const uptr kHeapMemBeg = 0x7b0000000000ull;
static const uptr kHeapMemEnd = 0x7c0000000000ull;
static const uptr kMetaShadowEnd = 0x380000000000ull;
static const uptr kShadowBeg = 0x100000000000ull;
static const uptr kShadowEnd = 0x300000000000ull;
static const uptr kHeapMemBeg = 0x720000000000ull;
static const uptr kHeapMemEnd = 0x730000000000ull;
static const uptr kLoAppMemBeg = 0x000000001000ull;
static const uptr kLoAppMemEnd = 0x008000000000ull;
static const uptr kLoAppMemEnd = 0x020000000000ull;
static const uptr kMidAppMemBeg = 0x550000000000ull;
static const uptr kMidAppMemEnd = 0x568000000000ull;
static const uptr kHiAppMemBeg = 0x7e8000000000ull;
static const uptr kMidAppMemEnd = 0x5a0000000000ull;
static const uptr kHiAppMemBeg = 0x7a0000000000ull;
static const uptr kHiAppMemEnd = 0x800000000000ull;
static const uptr kShadowMsk = 0x780000000000ull;
static const uptr kShadowXor = 0x040000000000ull;
static const uptr kShadowAdd = 0x000000000000ull;
static const uptr kShadowMsk = 0x700000000000ull;
static const uptr kShadowXor = 0x000000000000ull;
static const uptr kShadowAdd = 0x100000000000ull;
static const uptr kVdsoBeg = 0xf000000000000000ull;
};

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