Segfault in RTS (apparently only MacOS) FFI related?
The RTS crashes in the middle of a long-running computation involving multiple FFI calls. I suspect this has something to do with the foreign call spawning multiple threads, but I'm not sure.
Specifically, the crash is in the middle of a long loop. Each iteration performs a lot of memory allocation, so GC collections happen fairly frequently. Also, each iteration involves calls to the (external) BLAS function DGER. On my machine (dual-processor Mac OS with vecLib), BLAS functions are often multi-threaded. When I comment out the call to DGER, the bug does not manifest.
Here is the site of the crash (as reported by gdb):
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0xc000162d
0x003154ce in StgReturn () at rts/StgCRun.c:137
137 __asm__ volatile (
Sometimes the crash is at:
rtsbug: internal error: ASSERTION FAILED: file rts/Schedule.c, line 536I'm attaching source files for the buggy program. Unfortunately, they require BLAS and LAPACK. If there's anything I can do to help, I would be glad to assist.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.12.3 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Runtime System |
| Test case | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
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