runtime: an application using DLL crashes on windows

[tryor]

windows platform ,syscall dll, After a period of time, the following error occurred:

Go version of this problem: 1.3.3, 1.4.1,
Go version does not have this problem:1.1, 1.2.2

---

unexpected fault address 0x12000000
fatal error: fault
[signal 0xc0000005 code=0x0 addr=0x12000000 pc=0x4519ea]

goroutine 1 [running, locked to thread]:
runtime.gothrow(0x636f78, 0x5)
c:/go/src/runtime/panic.go:503 +0x67 fp=0x124c7728 sp=0x124c771c
runtime.sigpanic()
c:/go/src/runtime/os_windows.go:45 +0xdc fp=0x124c7738 sp=0x124c7728
runtime.mallocgc(0x10, 0x60ea40, 0x1, 0x0)
c:/go/src/runtime/malloc.go:183 +0x6da fp=0x124c7790 sp=0x124c7738
runtime.newobject(0x60ea40, 0x5652ac)
c:/go/src/runtime/malloc.go:353 +0x48 fp=0x124c77a4 sp=0x124c7790

OR: 2.
fatal error: unexpected signal during runtime execution
[signal 0xc0000005 code=0x1 addr=0x92b99fff pc=0x461957]

runtime stack:
runtime.MSpan_Sweep(0x1752c0, 0x0, 0x3d)
c:/go/src/runtime/mgc0.c:960 +0x107

goroutine 3 [running]:
runtime.switchtoM()
c:/go/src/runtime/asm_386.s:208 fp=0x12a6cfd4 sp=0x12a6cfd0
runtime.gosweepone(0x0)
c:/go/src/runtime/mgc0.c:1165 +0x18 fp=0x12a6cfe0 sp=0x12a6cfd4
runtime.bgsweep()
c:/go/src/runtime/mgc0.go:85 +0x2d fp=0x12a6cff0 sp=0x12a6cfe0
runtime.goexit()
c:/go/src/runtime/asm_386.s:2287 +0x1 fp=0x12a6cff4 sp=0x12a6cff0
created by gc
c:/go/src/runtime/mgc0.c:1383

[minux]

Could you please show a minimal standalone test case for this issue?

[jessfraz]

we might also be hitting this on the docker windows client we will try to find a minimal reproducing case

[rsc]

If you can send a reproduction case then we can try to fix for Go 1.5.

[jessfraz]

Hi,

Sorry for the noise, we ended up hopefully fixing with some buffer
changes. What we were seeing was very hard to reproduce
programatically. Thanks.

On Thu, Apr 9, 2015 at 9:59 PM, Russ Cox notifications@github.com wrote:

If you can send a reproduction case then we can try to fix for Go 1.5.

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Reply to this email directly or view it on GitHub.

Jessie Frazelle
4096R / D4C4 DD60 0D66 F65A 8EFC 511E 18F3 685C 0022 BFF3
pgp.mit.edu

[jessfraz]

I don't know if this should be closed necessarily, but as a person who also
closes issues on an open sources project and has seen people freak out, I
will just say we will let you know if we reproduce again in an easy way
to debug. Otherwise, seems fine to close it as it's hard to reproduce and
therefore hard to fix :)

On Friday, April 10, 2015, Ian Lance Taylor notifications@github.com
wrote:

Closed #9885 #9885.

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Reply to this email directly or view it on GitHub
#9885 (comment).

Jessie Frazelle
4096R / D4C4 DD60 0D66 F65A 8EFC 511E 18F3 685C 0022 BFF3
pgp.mit.edu http://pgp.mit.edu/pks/lookup?op=get&search=0x18F3685C0022BFF3