錯誤，如何調試？

我的應用程序突然中斷，甚至沒有顯示管理堆棧跟蹤。它在控制檯中顯示以下消息：錯誤，如何調試？

mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xac5ac2c0) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 
mono(6417,0xb0307000) malloc: *** mmap(size=16777216) failed (error code=12) 
*** error: can't allocate region 
*** set a breakpoint in malloc_error_break to debug 

Native stacktrace: 

    0 mono        0x000b6ea9 mono + 745129 
    1 mono        0x00006e23 mono + 24099 
    2 libsystem_c.dylib     0x9487c59b _sigtramp + 43 
    3 ???         0xffffffff 0x0 + 4294967295 
    4 libclh.dylib      0x9776bbbb libclh.dylib + 191419 
    5 libclh.dylib      0x97773564 libclh.dylib + 222564 
    6 libclh.dylib      0x977b0456 clhFenceCreate + 38 
    7 GeForceGLDriver      0x8f0dca23 glrCompExecuteKernel + 5034 
    8 OpenCL        0x9a691ff1 processExec + 506 
    9 OpenCL        0x9a696ec6 processWork + 214 
    10 libdispatch.dylib     0x9282f80b _dispatch_queue_drain + 224 
    11 libdispatch.dylib     0x9282f6b0 _dispatch_queue_invoke + 47 
    12 libdispatch.dylib     0x9282eeb8 _dispatch_worker_thread2 + 187 
    13 libsystem_c.dylib     0x94826b24 _pthread_wqthread + 346 
    14 libsystem_c.dylib     0x948286fe start_wqthread + 30 

Debug info from gdb: 

/tmp/mono-gdb-commands.DNbmkH:1: Error in sourced command file: 
unable to debug self 

================================================================= 
Got a SIGSEGV while executing native code. This usually indicates 
a fatal error in the mono runtime or one of the native libraries 
used by your application. 
=================================================================

看來問題在於OpenCL驅動程序。我如何追蹤和解決問題？

來源

2011-08-06 Lu4

有與互操作的內存泄漏問題，它造成suckout所有可用內存，當超出2GB墜毀去......所以謝謝大家，我的錯......

來源

2011-08-12 13:54:30 Lu4

它看起來更像是在OpenCL中發生的（注意'C'，這不是OpenGL，但與它有關係）。可能發生的情況是，你的程序試圖將一些GPU內存映射到它的地址空間，但是這會失敗，因爲沒有剩下的地址空間，這足夠大並且具有正確的對齊。而在低級代碼中，由mmap返回的指針不會被檢查，這會導致段錯誤。

這顯然是Mono或OpenCL/OpenGL驅動程序的錯誤，或者是它的綁定。將上面的跟蹤發送給任一開發人員，提出一個錯誤問題。

來源

2011-08-06 11:15:04 datenwolf

這很有趣，因爲該程序工作約10分鐘，然後崩潰。所有的內存分配都是在初始化過程中完成的，並且在處理過程中沒有內存分配，在計算過程中沒有分配GPU內存，真的很奇怪...... – Lu4

@ Lu4：是什麼讓你覺得沒有內存分配？ Mono/.net是垃圾收集系統。內存一直在後臺分配和丟棄。只要在Mono中發生這種情況，內存管理就可以處理髮生的地址空間碎片（垃圾收集器不時重新安排內存佈局）。然而，引入一些需要乾淨的地址空間，OpenGL，OpenCL等的系統，各種奇怪的交互即將發生。 – datenwolf

我已經在Windows上運行程序同樣的問題，但它給了我堆棧跟蹤，clEnqueueAcquireGLObjects的問題。這也很奇怪，因爲我稍後調用了適當的clEnqueueReleaseGLObjects，我開始新的線程 – Lu4

它SA重要的CALayer上下文中的大量內存分配，每次更改視圖時都需要釋放該層。它發生在我身上，我就是這樣解決它的，每次你改變頁面繪製特定的上下文時，你都需要釋放內存。

來源

2012-03-15 12:31:45

錯誤，如何調試？

回答

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