ASAN reports memory leak in libnvidia-glcore.so.515.57

Graphics / Linux Linux
1

A simple SDL2 program triggers a memory leak:

#include <SDL2/SDL.h>

#include <cstdio>
#include <memory>
#include <cstdlib>

int main() {
    if (std::atexit(SDL_Quit)) {
        printf("Registration failed\n");
        return 1;
    }

    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("SDL_Init error: %s", SDL_GetError());
        std::exit(1);
    }

    auto free_window = [](SDL_Window* w) { SDL_DestroyWindow(w); };
    std::unique_ptr<SDL_Window, decltype(free_window)> window{
        SDL_CreateWindow("test window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 400, 400,
                         0),
        std::move(free_window)};
    if (!window) {
        printf("SDL_CreateWindow error: %s", SDL_GetError());
        std::exit(1);
    }

    auto free_surface = [](SDL_Surface* s) { SDL_FreeSurface(s); };
    std::unique_ptr<SDL_Surface, decltype(free_surface)> surface{SDL_GetWindowSurface(window.get()),
                                                                 std::move(free_surface)};
    if (!surface) {
        printf("SDL_GetWindowSurface error: %s", SDL_GetError());
        std::exit(1);
    }

    SDL_memset(surface->pixels, 0, surface->h * surface->pitch);

    while (true) {
        SDL_Event event;
        while (SDL_PollEvent(&event)) {
            if (event.type == SDL_QUIT) {
                std::exit(0);
            }
        }

        auto* pixels = reinterpret_cast<unsigned*>(surface->pixels);
        for (int y = 0; y != 400; ++y) {
            for (int x = 0; x != 400; ++x) {
                pixels[y * 400 + x] = SDL_MapRGB(surface->format, 255, 255, 255);
            }
        }

        SDL_UpdateWindowSurface(window.get());
    }
}

Build:

g++ leak.cc -isystem /usr/include/SDL2 -fsanitize=address -o leak /usr/lib/libSDL2.so

ASAN output:


=================================================================
==46550==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 6280 byte(s) in 3 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd0858ba06f  (/usr/lib/libnvidia-glcore.so.515.57+0xeba06f)

Direct leak of 1024 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6be7ea in __interceptor_realloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:85
    #1 0x7fd0858b951a  (/usr/lib/libnvidia-glcore.so.515.57+0xeb951a)

Direct leak of 520 byte(s) in 13 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0c2876  (<unknown module>)

Direct leak of 368 byte(s) in 2 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0b11e0  (/usr/lib/libasan.so.8.0.0+0x7d11e0)

Direct leak of 112 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0be120  (<unknown module>)

Direct leak of 96 byte(s) in 3 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0beed5  (<unknown module>)

Direct leak of 40 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0bf348  (<unknown module>)

Direct leak of 24 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0c6b00  (<unknown module>)

Direct leak of 8 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6be7ea in __interceptor_realloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:85
    #1 0x7fd08a0b765a  (/usr/lib/libasan.so.8.0.0+0x7d765a)

Indirect leak of 144448 byte(s) in 453 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd0858ba06f  (/usr/lib/libnvidia-glcore.so.515.57+0xeba06f)

Indirect leak of 7989 byte(s) in 18 object(s) allocated from:
    #0 0x7fd08a6be7ea in __interceptor_realloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:85
    #1 0x7fd08a0befd5  (<unknown module>)

Indirect leak of 4930 byte(s) in 374 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd0858b9bdc  (/usr/lib/libnvidia-glcore.so.515.57+0xeb9bdc)

Indirect leak of 1596 byte(s) in 3 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0bf595  (<unknown module>)

Indirect leak of 920 byte(s) in 5 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0b11e0  (/usr/lib/libasan.so.8.0.0+0x7d11e0)

Indirect leak of 752 byte(s) in 6 object(s) allocated from:
    #0 0x7fd08a6be7ea in __interceptor_realloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:85
    #1 0x7fd0858b951a  (/usr/lib/libnvidia-glcore.so.515.57+0xeb951a)

Indirect leak of 288 byte(s) in 4 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a09bc12  (/usr/lib/libasan.so.8.0.0+0x7bbc12)

Indirect leak of 264 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0a18da  (/usr/lib/libasan.so.8.0.0+0x7c18da)

Indirect leak of 240 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0c889c  (<unknown module>)
    #2 0x7ffffffff  (<unknown module>)

Indirect leak of 232 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0bc8ee  (<unknown module>)

Indirect leak of 184 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0b11e0  (/usr/lib/libasan.so.8.0.0+0x7d11e0)
    #2 0xd00000004  (<unknown module>)

Indirect leak of 176 byte(s) in 2 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0b6b70  (/usr/lib/libasan.so.8.0.0+0x7d6b70)

Indirect leak of 160 byte(s) in 4 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0c2876  (<unknown module>)

Indirect leak of 152 byte(s) in 7 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0bfc08  (<unknown module>)

Indirect leak of 128 byte(s) in 2 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0b564d  (/usr/lib/libasan.so.8.0.0+0x7d564d)

Indirect leak of 112 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0be120  (<unknown module>)

Indirect leak of 96 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0a9055  (/usr/lib/libasan.so.8.0.0+0x7c9055)

Indirect leak of 96 byte(s) in 2 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0b6c57  (/usr/lib/libasan.so.8.0.0+0x7d6c57)

Indirect leak of 80 byte(s) in 2 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0bf348  (<unknown module>)

Indirect leak of 80 byte(s) in 2 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0b6bf2  (/usr/lib/libasan.so.8.0.0+0x7d6bf2)

Indirect leak of 64 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6be7ea in __interceptor_realloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:85
    #1 0x7fd08a0a9141  (/usr/lib/libasan.so.8.0.0+0x7c9141)

Indirect leak of 64 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0c3b80  (<unknown module>)

Indirect leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0a188a  (/usr/lib/libasan.so.8.0.0+0x7c188a)

Indirect leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0a18a1  (/usr/lib/libasan.so.8.0.0+0x7c18a1)

Indirect leak of 48 byte(s) in 2 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0c6b00  (<unknown module>)

Indirect leak of 38 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0c002e  (<unknown module>)

Indirect leak of 24 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0a1282  (/usr/lib/libasan.so.8.0.0+0x7c1282)

Indirect leak of 24 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bf411 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
    #1 0x7fd08a0a1b4a  (/usr/lib/libasan.so.8.0.0+0x7c1b4a)

Indirect leak of 24 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0b6a5c  (/usr/lib/libasan.so.8.0.0+0x7d6a5c)

Indirect leak of 16 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6be7ea in __interceptor_realloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:85
    #1 0x7fd08a0c3eb3  (<unknown module>)

Indirect leak of 7 byte(s) in 1 object(s) allocated from:
    #0 0x7fd08a6bfa89 in __interceptor_malloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:69
    #1 0x7fd08a0beed5  (<unknown module>)

SUMMARY: AddressSanitizer: 171800 byte(s) leaked in 928 allocation(s).
2

How did you solve this issue? I am also running into it. However not with SDL2 but with the new drivers via CUDA.

EDIT: To clarify I’m still talking about the 515 drivers and not the 520.
And furthermore I’m only seeing the “unknown-module” leaks. But these “leaks” have only occured after upgrading the drivers. After having read around a bit, im assuming the issue has to do with shared library loading / closing. But I am not really an expert on that matter

3

@amrits

4

How did you solve this issue?

I did not. Tried writing an empty-body dlclose, as the internet says. Tried many different writings of library names to blacklist the entries in LSAN. Didn’t work either. So I kinda gave up.

Also I’m not even sure how I can go around the <unknown module>. Even if blacklists in LSAN worked, I still don’t know the library name.

5

Oh well, good to know that its not just me who have no idea on how to solve it :) And yea, no matter what I try to put in the lsan_suppressions file it will not ignore the unknown modules.

6

this still happends with nvidia 525.60.11 , also happends when creating a simple vulkan and/or opengl instance.

7

I am able to reproduce issue on my local setup and filed a bug 3917145 internally for tracking purpose.
We will debug it now and keep you posted on the same.

8

This issue is mentioned as fixed in the beta driver - 535.43.02