Memory Leakage

[gongwg2017]

Version: 2023.0.0

// TODO: Add your control notification handler code here
tbb::task_group tg; // let TBB spin up
tg.wait();

I detected a significant amount of memory leakage even when running only the simple code above.

Could you please take a look?

The memory leak report shows entries similar to the following:

{897} normal block at 0x00000240697AD7F0, 191 bytes long.
Data: < zi@ > F0 D7 7A 69 40 02 00 00 ED ED ED ED ED ED ED ED
{896} normal block at 0x00000240698184E0, 399 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{895} normal block at 0x0000024069818320, 383 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{894} normal block at 0x00000240698175E0, 8 bytes long.
Data: < # i@ > 80 23 81 69 40 02 00 00
{893} normal block at 0x00000240698139B0, 175 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{892} normal block at 0x0000024069812330, 167 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{889} normal block at 0x00000240698159E0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{886} normal block at 0x00000240698153C0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{883} normal block at 0x0000024069814F60, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{880} normal block at 0x0000024069815AC0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{877} normal block at 0x00000240698162A0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{874} normal block at 0x0000024069815E40, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{871} normal block at 0x00000240698160E0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{868} normal block at 0x0000024069815C80, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{867} normal block at 0x0000024069816E40, 1167 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{864} normal block at 0x0000024069816C40, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{861} normal block at 0x0000024069816460, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{858} normal block at 0x0000024069815580, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{855} normal block at 0x0000024069816A80, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{852} normal block at 0x0000024069816D20, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{849} normal block at 0x0000024069815820, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{846} normal block at 0x00000240698167E0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{843} normal block at 0x00000240698168C0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{842} normal block at 0x00000240698046E0, 1167 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{839} normal block at 0x00000240697AFA20, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{836} normal block at 0x00000240697AF860, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{833} normal block at 0x00000240697AF780, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{830} normal block at 0x00000240697AF6A0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{827} normal block at 0x00000240697B04A0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{824} normal block at 0x00000240697AFF60, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{821} normal block at 0x00000240697AFDA0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{818} normal block at 0x00000240697B02E0, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{817} normal block at 0x0000024069804210, 1167 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{816} normal block at 0x00000240697E5BC0, 128 bytes long.
Data: < yi@ yi@ > A0 F5 79 69 40 02 00 00 A0 F5 79 69 40 02 00 00
{815} normal block at 0x00000240697F1950, 16 bytes long.
Data: < L i@ > E8 4C 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{814} normal block at 0x00000240697F1630, 16 bytes long.
Data: < L i@ > D0 4C 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{813} normal block at 0x000002406979F5A0, 32 bytes long.
Data: < yi@ yi@ > A0 F5 79 69 40 02 00 00 A0 F5 79 69 40 02 00 00
{812} normal block at 0x00000240697E6280, 128 bytes long.
Data: < {i@ {i@ > D0 F3 7B 69 40 02 00 00 D0 F3 7B 69 40 02 00 00
{811} normal block at 0x00000240697F1540, 16 bytes long.
Data: < K i@ > E8 4B 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{810} normal block at 0x00000240697F18B0, 16 bytes long.
Data: < K i@ > D0 4B 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{809} normal block at 0x00000240697BF3D0, 32 bytes long.
Data: < {i@ {i@ > D0 F3 7B 69 40 02 00 00 D0 F3 7B 69 40 02 00 00
{808} normal block at 0x00000240697E5F80, 128 bytes long.
Data: < {i@ {i@ > 10 F3 7B 69 40 02 00 00 10 F3 7B 69 40 02 00 00
{807} normal block at 0x00000240697F14F0, 16 bytes long.
Data: < J i@ > E8 4A 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{806} normal block at 0x00000240697F14A0, 16 bytes long.
Data: < J i@ > D0 4A 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{805} normal block at 0x00000240697BF310, 32 bytes long.
Data: < {i@ {i@ > 10 F3 7B 69 40 02 00 00 10 F3 7B 69 40 02 00 00
{804} normal block at 0x00000240697E6100, 128 bytes long.
Data: < {i@ {i@ > 90 FA 7B 69 40 02 00 00 90 FA 7B 69 40 02 00 00
{803} normal block at 0x00000240697F13B0, 16 bytes long.
Data: < I i@ > E8 49 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{802} normal block at 0x00000240697F1720, 16 bytes long.
Data: < I i@ > D0 49 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{801} normal block at 0x00000240697BFA90, 32 bytes long.
Data: < {i@ {i@ > 90 FA 7B 69 40 02 00 00 90 FA 7B 69 40 02 00 00
{800} normal block at 0x00000240697E5800, 128 bytes long.
Data: < {i@ {i@ > B0 F2 7B 69 40 02 00 00 B0 F2 7B 69 40 02 00 00
{799} normal block at 0x00000240697F1360, 16 bytes long.
Data: < H i@ > E8 48 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{798} normal block at 0x00000240697F12C0, 16 bytes long.
Data: < H i@ > D0 48 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{797} normal block at 0x00000240697BF2B0, 32 bytes long.
Data: < {i@ {i@ > B0 F2 7B 69 40 02 00 00 B0 F2 7B 69 40 02 00 00
{796} normal block at 0x00000240697E5980, 128 bytes long.
Data: < {i@ {i@ > B0 FE 7B 69 40 02 00 00 B0 FE 7B 69 40 02 00 00
{795} normal block at 0x00000240697F11D0, 16 bytes long.
Data: < G i@ > E8 47 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{794} normal block at 0x00000240697F1810, 16 bytes long.
Data: < G i@ > D0 47 81 69 40 02 00 00 00 00 00 00 00 00 00 00
{793} normal block at 0x00000240697BFEB0, 32 bytes long.
Data: < {i@ {i@ > B0 FE 7B 69 40 02 00 00 B0 FE 7B 69 40 02 00 00
{792} normal block at 0x00000240698040C0, 271 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{791} normal block at 0x0000024069803F30, 335 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{788} normal block at 0x0000024069813C60, 4495 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{787} normal block at 0x00000240697F5710, 199 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{784} normal block at 0x0000024069813410, 175 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{779} normal block at 0x00000240697F5600, 207 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{778} normal block at 0x0000024069809B80, 32911 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{775} normal block at 0x00000240697F6C50, 207 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{772} normal block at 0x00000240697DB590, 295 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{771} normal block at 0x00000240697F1180, 16 bytes long.
Data: <pK i@ > 70 4B 7F 69 40 02 00 00 00 00 00 00 00 00 00 00
{770} normal block at 0x00000240697F10E0, 16 bytes long.
Data: <PK i@ > 50 4B 7F 69 40 02 00 00 00 00 00 00 00 00 00 00
{769} normal block at 0x00000240697F1310, 16 bytes long.
Data: <0K i@ > 30 4B 7F 69 40 02 00 00 00 00 00 00 00 00 00 00
{766} normal block at 0x00000240697F4AE0, 287 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{765} normal block at 0x00000240697ADAF0, 183 bytes long.
Data: < zi@ > F0 DA 7A 69 40 02 00 00 ED ED ED ED ED ED ED ED
{764} normal block at 0x00000240697AFE80, 159 bytes long.
Data: < > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
Object dump complete.
The program '[25532] TestMem.exe' has exited with code 2 (0x2).

[dnmokhov]

Thank you for the question, @gongwg2017.

I believe that the memory blocks you are seeing are TBB scheduler initialization: allocated lazily, intentionally retained for process lifetime, released during DLL teardown.