Issue title: SKMemoryStream.Dispose results in SIGSEGV
 Issue body: It's me again - hopefilly this time not with a false positive.
In our SVG port, we have a **SvgW3CTestSuite.Droid** project. This is based Xamarin.NUnittest and runs all W3C SVG specifications as a test (renders the svgs, compares them to the corresponding pngs, to make sure we render correctly)

Now the problem is that some of the SVGs contains bitmaps which get loaded like this:

`

        public virtual SKBitmap CreateFromStream(Stream stream)
        {
            using (var ms = new MemoryStream())
            {
                stream.CopyTo(ms);
                ms.Seek(0, SeekOrigin.Begin);

                using (var s = new SKMemoryStream(ms.ToArray()))
                {
                    var bm = SKBitmap.Decode(s);
                    return bm;
                }
            }
        }`

The first x times (like 10 or so, but this varies) this method works just fine, but after that, the test app crashes with the following stacktrace:

> starting test #18 'svg/animate-elem-08
08-03 10:01:44.015 E/mono-rt ( 5132): Stacktrace:
08-03 10:01:44.015 E/mono-rt ( 5132): 
08-03 10:01:44.015 E/mono-rt ( 5132):   at <unknown> <0xffffffff>
08-03 10:01:44.015 E/mono-rt ( 5132):   at (wrapper managed-to-native) SkiaSharp.SkiaApi.sk_memorystream_destroy (intptr) <0x00037>
08-03 10:01:44.015 E/mono-rt ( 5132):   at SkiaSharp.SKMemoryStream.Dispose (bool) <0x00037>
08-03 10:01:44.015 E/mono-rt ( 5132):   at SkiaSharp.SKObject.Dispose () <0x0001f>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SKFactoryBase.CreateImageFromStream (System.IO.Stream) <0x0010f>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgImage.GetImage (System.Uri) <0x00197>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgImage.Render (Svg.ISvgRenderer) <0x001b3>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgElement.RenderElement (Svg.ISvgRenderer) <0x00027>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgUse.Render (Svg.ISvgRenderer) <0x0015b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgElement.RenderChildren (Svg.ISvgRenderer) <0x0007b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgVisualElement.Render (Svg.ISvgRenderer,bool) <0x0053b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgVisualElement.Render (Svg.ISvgRenderer) <0x0001f>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgElement.RenderChildren (Svg.ISvgRenderer) <0x0007b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgVisualElement.Render (Svg.ISvgRenderer,bool) <0x0053b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgVisualElement.Render (Svg.ISvgRenderer) <0x0001f>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgElement.RenderChildren (Svg.ISvgRenderer) <0x0007b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgElement.Render (Svg.ISvgRenderer) <0x00033>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgFragment.Render (Svg.ISvgRenderer) <0x0032b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at Svg.SvgDocument.Draw (Svg.ISvgRenderer) <0x0004f>
08-03 10:01:44.015 E/mono-rt ( 5132):   at SvgW3CTestSuite.Droid.W3CTestFixture.RenderSvg (string,int,int) <0x000bf>
08-03 10:01:44.015 E/mono-rt ( 5132):   at SvgW3CTestSuite.Droid.W3CTestFixture/<>c__DisplayClass8_0.<W3CTestSuiteCompare>b__0 () <0x00047>
08-03 10:01:44.015 E/mono-rt ( 5132):   at SvgW3CTestSuite.Droid.W3CTestFixture/<>c__DisplayClass9_0.<RunTest>b__0 () <0x000a3>
08-03 10:01:44.015 E/mono-rt ( 5132):   at System.Threading.ThreadHelper.ThreadStart_Context (object) <0x0009b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) <0x001f7>
08-03 10:01:44.015 E/mono-rt ( 5132):   at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) <0x0002b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object) <0x0005b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at System.Threading.ThreadHelper.ThreadStart () <0x0002b>
08-03 10:01:44.015 E/mono-rt ( 5132):   at (wrapper runtime-invoke) object.runtime_invoke_void__this__ (object,intptr,intptr,intptr) <0x000c7>
08-03 10:01:44.015 E/mono-rt ( 5132): 
08-03 10:01:44.015 E/mono-rt ( 5132): Attempting native Android stacktrace:
08-03 10:01:44.015 E/mono-rt ( 5132): 
08-03 10:01:44.030 E/mono-rt ( 5132):   at ???+4536 [0x400cd1b8]
08-03 10:01:44.030 E/mono-rt ( 5132):   at ???+12396 [0x846e106c]
08-03 10:01:44.030 E/mono-rt ( 5132): 
08-03 10:01:44.030 E/mono-rt ( 5132): =================================================================
08-03 10:01:44.030 E/mono-rt ( 5132): Got a SIGSEGV while executing native code. This usually indicates
08-03 10:01:44.030 E/mono-rt ( 5132): a fatal error in the mono runtime or one of the native libraries 
08-03 10:01:44.030 E/mono-rt ( 5132): used by your application.
08-03 10:01:44.030 E/mono-rt ( 5132): =================================================================
08-03 10:01:44.030 E/mono-rt ( 5132): 
08-03 10:01:44.030 F/libc    ( 5132): Fatal signal 11 (SIGSEGV) at 0x400cd1b8 (code=2), thread 5226 (TestSuite.Droid)
08-03 10:01:44.130 I/DEBUG   ( 2410): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
08-03 10:01:44.130 I/DEBUG   ( 2410): Build fingerprint: 'Huawei/H60-L12/hwH60:4.4.2/HDH60-L12/CHNC00B317:user/ota-rel-keys,release-keys'
08-03 10:01:44.130 I/DEBUG   ( 2410): Revision: '0'
08-03 10:01:44.130 I/DEBUG   ( 2410): pid: 5132, tid: 5226, name: TestSuite.Droid  >>> SvgW3CTestSuite.Droid.SvgW3CTestSuite.Droid <<<
08-03 10:01:44.130 I/DEBUG   ( 2410): signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 400cd1b8
08-03 10:01:44.275 I/DEBUG   ( 2410):     r0 828fd748  r1 400cd1b8  r2 855b6128  r3 00000014
08-03 10:01:44.275 I/DEBUG   ( 2410):     r4 00000017  r5 85632010  r6 7d9cdd80  r7 828fd748
08-03 10:01:44.275 I/DEBUG   ( 2410):     r8 7fc9d470  r9 745f9f00  sl 84f15d6c  fp 84f15178
08-03 10:01:44.275 I/DEBUG   ( 2410):     ip 846e1068  sp 84f14bd0  lr 846e1070  pc 400cd1b8  cpsr a0010010
08-03 10:01:44.275 I/DEBUG   ( 2410):     d0  4c0201d00e44010a  d1  028c038b048a0550
08-03 10:01:44.275 I/DEBUG   ( 2410):     d2  ea0000001a00000c  d3  e59de004e59dc00d
08-03 10:01:44.275 I/DEBUG   ( 2410):     d4  e28dd0b4e58ec000  d5  e1a00007e8bd9f80
08-03 10:01:44.275 I/DEBUG   ( 2410):     d6  3f2882adc4c9c90c  d7  40113210385c67d9
08-03 10:01:44.275 I/DEBUG   ( 2410):     d8  0000000000000000  d9  0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d10 0000000000000000  d11 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d12 0000000000000000  d13 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d14 0000000000000000  d15 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d16 0000000000000001  d17 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d18 0000000000000000  d19 0000000000000001
08-03 10:01:44.275 I/DEBUG   ( 2410):     d20 0000000000000001  d21 0000000000000001
08-03 10:01:44.275 I/DEBUG   ( 2410):     d22 0000000000000000  d23 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d24 0000000100000000  d25 0000000100000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d26 0000000000000000  d27 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d28 0000000000000000  d29 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     d30 0000000000000000  d31 0000000000000000
08-03 10:01:44.275 I/DEBUG   ( 2410):     scr 80000010
08-03 10:01:44.275 I/DEBUG   ( 2410): 
08-03 10:01:44.275 I/DEBUG   ( 2410): backtrace:
08-03 10:01:44.275 I/DEBUG   ( 2410):     #00  pc 000011b8  <unknown>
08-03 10:01:44.275 I/DEBUG   ( 2410):     #01  pc 0000306c  <unknown>
08-03 10:01:44.275 I/DEBUG   ( 2410): 
08-03 10:01:44.275 I/DEBUG   ( 2410): stack:
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14b90  00000000  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14b94  766ada48  /data/app-lib/Mono.Android.DebugRuntime-1/libmonosgen-32bit-2.0.so
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14b98  02ff472b  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14b9c  84f14bb4  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14ba0  846e1030  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14ba4  7654e650  /data/app-lib/Mono.Android.DebugRuntime-1/libmonosgen-32bit-2.0.so
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14ba8  00000000  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bac  846e0fc0  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bb0  855b6128  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bb4  7654e714  /data/app-lib/Mono.Android.DebugRuntime-1/libmonosgen-32bit-2.0.so
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bb8  84f14bd0  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bbc  82ac9530  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bc0  84f14bd0  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bc4  766099c8  /data/app-lib/Mono.Android.DebugRuntime-1/libmonosgen-32bit-2.0.so
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bc8  e3a070ad  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bcc  ef9000ad  
08-03 10:01:44.275 I/DEBUG   ( 2410):     #00  84f14bd0  84b71cf0  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          ........  ........
08-03 10:01:44.275 I/DEBUG   ( 2410):     #01  84f14bd0  84b71cf0  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bd4  84b531d0  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bd8  82ac9530  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bdc  84f14bd0  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14be0  846e1068  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14be4  84f15178  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14be8  84b71cf0  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bec  84b531d0  [anon:libc_malloc]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bf0  00000000  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bf4  84f14cb8  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bf8  845de860  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14bfc  84f15178  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14c00  00000000  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14c04  84f14cc8  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14c08  846e07f8  
08-03 10:01:44.275 I/DEBUG   ( 2410):          84f14c0c  84f15178  [stack:5226]
08-03 10:01:44.275 I/DEBUG   ( 2410): 
08-03 10:01:44.275 I/DEBUG   ( 2410): memory near r0:
08-03 10:01:44.275 I/DEBUG   ( 2410):     828fd728 82aaa1d0 846e0e30 818f29a8 00000013  
08-03 10:01:44.275 I/DEBUG   ( 2410):     828fd738 7d515200 00180000 00000000 00000013  
08-03 10:01:44.275 I/DEBUG   ( 2410):     828fd748 ffe8e8e8 ffffffff 00000010 00000013  
08-03 10:01:44.275 I/DEBUG   ( 2410):     828fd758 7d513b78 00020000 00000001 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd768 82aaa3b8 846e0b90 804c6860 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd778 00000000 00180000 00000000 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd788 0000036e 82aaa4c8 00000000 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd798 828fd7a8 ffffffff 00000100 0000005b  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7a8 845036d0 00000001 41200000 42b40000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7b8 41f00000 42dc0000 82903628 82903728  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7c8 00000006 00000009 000000b2 828fd800  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7d8 00000006 00000004 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7e8 00000000 00000000 00010100 00040100  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7f8 00000000 00000023 3f3504f3 3f3504f3  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd808 3f3504f3 3f3504f3 00000100 82010000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd818 00000080 0000003b 84b79ad0 4006d000  
08-03 10:01:44.280 I/DEBUG   ( 2410): 
08-03 10:01:44.280 I/DEBUG   ( 2410): memory near r1:
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd198 4006c000 82b25ad8 855b7030 00200000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd1a8 000006df 02c087d8 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd1b8 400cd1b0 400cd1b0 400cd1b8 400cd1b8  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd1c8 84b9edd0 84b71c50 84b4ddf0 84613548  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd1d8 84b354e8 84b354e8 81915fb0 81915fb0  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd1e8 82b25b98 82b25b98 84afa250 84afa250  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd1f8 82a4fdf8 82a4fdf8 84a5a348 84a5a348  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd208 84afa8a0 84afa8a0 84a55bb0 84a55bb0  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd218 84b08958 84b08958 84b31ac8 84b31ac8  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd228 84613870 84613870 84afa878 84afa878  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd238 84b50b40 84b50b40 84aff598 84aff598  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd248 84b1d188 84b1d188 84b1d8c8 84b1d8c8  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd258 846d75c0 846d75c0 84b35460 84b35460  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd268 84a5a390 84a5a390 82903338 82903338  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd278 84b088f8 84b088f8 828fd6c8 828fd6c8  
08-03 10:01:44.280 I/DEBUG   ( 2410):     400cd288 82903728 82903728 84af9fe0 84af9fe0  
08-03 10:01:44.280 I/DEBUG   ( 2410): 
08-03 10:01:44.280 I/DEBUG   ( 2410): memory near r2:
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6108 7d525a10 7d525a28 7d525a40 845de840  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6118 7d525a70 7d525a88 7d525aa0 7d525ab8  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6128 82aa9f58 0000000a 745c5498 83899518  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6138 82aaa110 02000010 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6148 7d524000 7d524018 7d524030 7d524048  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6158 7d524060 846e0fc0 00000000 7d525908  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6168 7d525920 7d525938 7d525950 7d525968  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6178 7d525980 7d525998 7d5259b0 7d5259c8  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6188 7d5259e0 7d5259f8 7d525a10 7d525a28  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b6198 7d525a40 7d525a58 7d525a70 7d525a88  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b61a8 7d525aa0 7d525ab8 82aaa000 0000000a  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b61b8 745c5498 83899530 82aaa0d8 02000010  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b61c8 00000000 00000000 7d524000 7d524018  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b61d8 7d524030 7d524048 7d524060 7d524078  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b61e8 82899930 00000000 846e06e8 00000b8d  
08-03 10:01:44.280 I/DEBUG   ( 2410):     855b61f8 00000158 000a0002 00000000 00000002  
08-03 10:01:44.280 I/DEBUG   ( 2410): 
08-03 10:01:44.280 I/DEBUG   ( 2410): memory near r5:
08-03 10:01:44.280 I/DEBUG   ( 2410):     85631ff0 00000000 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632000 8562e000 00007280 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632010 7d507818 00000000 00003937 00610064  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632020 00610074 0069003a 0061006d 00650067  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632030 006a002f 00650070 003b0067 00610062  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632040 00650073 00340036 002f002c 006a0039  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632050 0034002f 00410041 00530051 005a006b  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632060 0052004a 00410067 00410042 00450067  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632070 00530041 00420041 00410049 00440041  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632080 0034002f 00580052 0052002b 00680058  
08-03 10:01:44.280 I/DEBUG   ( 2410):     85632090 005a0070 00410067 00530041 006b0055  
08-03 10:01:44.280 I/DEBUG   ( 2410):     856320a0 00410071 00670041 00410041 00410041  
08-03 10:01:44.280 I/DEBUG   ( 2410):     856320b0 0041004a 00380041 00410042 00410067  
08-03 10:01:44.280 I/DEBUG   ( 2410):     856320c0 00410047 00410041 00650041 00410067  
08-03 10:01:44.280 I/DEBUG   ( 2410):     856320d0 00410041 00410042 00410042 00410067  
08-03 10:01:44.280 I/DEBUG   ( 2410):     856320e0 00410058 00410041 00670041 00410041  
08-03 10:01:44.280 I/DEBUG   ( 2410): 
08-03 10:01:44.280 I/DEBUG   ( 2410): memory near r6:
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cdd60 006d0065 006e0065 003a0074 00690020  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cdd70 0061006d 00650067 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cdd80 838fc720 00000000 80885f98 849edfe8  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cdd90 7daeebe0 7d5a8120 7d9cdf18 7d9cde98  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cdda0 7d9cde68 00000000 00000000 7d9cdec0  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cddb0 7d9cde20 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cddc0 00000000 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cddd0 00000000 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cdde0 00000000 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cddf0 00000101 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cde00 00000000 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cde10 00000000 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cde20 828ace58 00000000 7dae5450 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cde30 00000000 00000002 828a2d28 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cde40 00000000 00000000 80890158 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7d9cde50 00000000 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410): 
08-03 10:01:44.280 I/DEBUG   ( 2410): memory near r7:
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd728 82aaa1d0 846e0e30 818f29a8 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd738 7d515200 00180000 00000000 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd748 ffe8e8e8 ffffffff 00000010 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd758 7d513b78 00020000 00000001 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd768 82aaa3b8 846e0b90 804c6860 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd778 00000000 00180000 00000000 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd788 0000036e 82aaa4c8 00000000 00000013  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd798 828fd7a8 ffffffff 00000100 0000005b  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7a8 845036d0 00000001 41200000 42b40000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7b8 41f00000 42dc0000 82903628 82903728  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7c8 00000006 00000009 000000b2 828fd800  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7d8 00000006 00000004 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7e8 00000000 00000000 00010100 00040100  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd7f8 00000000 00000023 3f3504f3 3f3504f3  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd808 3f3504f3 3f3504f3 00000100 82010000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     828fd818 00000080 0000003b 84b79ad0 4006d000  
08-03 10:01:44.280 I/DEBUG   ( 2410): 
08-03 10:01:44.280 I/DEBUG   ( 2410): memory near r8:
08-03 10:01:44.280 I/DEBUG   ( 2410):     7fc9d450 7d517d90 00000000 00000000 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7fc9d460 00010000 00000000 7fc9d470 00000000  
08-03 10:01:44.280 I/DEBUG   ( 2410):     7fc9d470 000005c6 06003310 7d517d90 7d520ab0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d480 7cf5268f 00000000 7fc9d498 ffff0001  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d490 01000000 7d515280 7d508a30 001c0000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d4a0 7fc9d4b0 ffff0001 00000000 7d515280  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d4b0 7d508a30 001c0000 0000000f 76628634  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d4c0 00000000 00000000 00000010 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d4d0 7d508a30 7fc9d4a0 7fc9d4e8 00000119  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d4e0 7fc9d518 7fc9d558 63695f5f 5f6c6c61  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d4f0 70617277 5f726570 6f6e6f6d 6a626f5f  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d500 5f746365 5f77656e 63657073 63696669  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d510 00000000 00000000 7fc9d530 00000025  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d520 80000011 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d530 0213f002 29000000 00000003 394b14f0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     7fc9d540 00000010 00f00cf0 00000004 00013925  
08-03 10:01:44.285 I/DEBUG   ( 2410): 
08-03 10:01:44.285 I/DEBUG   ( 2410): memory near r9:
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9ee0 1b000221 7fcbea58 00000000 00000013  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9ef0 7fcb9050 7fcb9050 7fddee58 000000d3  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f00 00000000 7d508348 00000000 7d508010  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f10 7d508068 7d5080c0 7fcc0e20 7d508118  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f20 7fdf67d8 7fca32f8 7d508170 7d508298  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f30 00000000 7d5082f0 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f40 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f50 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f60 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f70 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f80 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9f90 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9fa0 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9fb0 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9fc0 00000000 00000000 00000000 00000013  
08-03 10:01:44.285 I/DEBUG   ( 2410):     745f9fd0 7fcadc28 7fd0ccb0 00000000 0000001b  
08-03 10:01:44.285 I/DEBUG   ( 2410): 
08-03 10:01:44.285 I/DEBUG   ( 2410): memory near sl:
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15d4c 7d999028 00000000 76608844 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15d5c 7d3d839c 76763a60 84f15d90 84b7b840  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15d6c 00000000 82a983ec 84f15d94 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15d7c 84c5be30 766086ac 00000489 803226c4  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15d8c 766acc4c 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15d9c 84f15dd0 84b7b840 766acb9c 803226cc  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15dac 766acb9c 84e16000 4008b40c 803226cc  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15dbc 84b7b840 84f15dd0 00000002 00000078  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15dcc 4008b5a4 84f15dd0 84b7b840 00000002  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15ddc 00000000 00000000 02ff472b 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15dec 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15dfc 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15e0c 828fe908 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15e1c 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15e2c 00000000 00000000 00000000 84b531c8  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15e3c 84b531d0 84b531c8 82a981c0 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410): 
08-03 10:01:44.285 I/DEBUG   ( 2410): memory near fp:
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15158 7d9cdd80 7d9ce5c0 82899c88 7db0c110  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15168 84f15d6c 82899c88 84f15178 846e0788  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15178 7db0c0d0 7db0c110 82ba10c0 846e0630  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15188 00002ad8 85698001 80891140 7db0c0a0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15198 7463cb98 0000000a 80891140 7db0c0a0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f151a8 7db0c110 7d9ce5c0 82899c88 7db0c110  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f151b8 84f15d6c 82899c88 84f151c8 846df870  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f151c8 00000001 85698010 7d9cdf00 7db0c0a0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f151d8 00000000 80890158 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f151e8 7d9cdd80 7d9cdf18 00000000 82cda5f0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f151f8 00000000 80891140 855b5d58 7d9cdf18  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15208 7d9cdd80 82cda5f0 00000001 82945f94  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15218 82883c01 7fcc66f8 7d9cdd80 7d9ce5c0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15228 fffffffe 7fcc66f8 7db0c0a0 85698010  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15238 7d9cdd80 7d9cbee0 7d9cdd80 7d9cdd80  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f15248 7db053e8 82ba10c0 84f15258 846de1b4  
08-03 10:01:44.285 I/DEBUG   ( 2410): 
08-03 10:01:44.285 I/DEBUG   ( 2410): memory near ip:
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1048 e5810004 e590c000 e581c000 e5801000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1058 e581d00c e581b014 e1a0c00f e581c010  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1068 e1a00007 facec82c e30b089c e3470675  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1078 e5900000 e3500000 1a000007 eaffffff  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1088 e59dc000 e59de004 e58ec000 e28dd0b4  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1098 e8bd9f80 e1a00007 eb000008 eb000004  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e10a8 e1a01000 e1a07001 e3500000 1afffff8  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e10b8 eafffff2 e59fc000 e12fff1c 7d526efc  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e10c8 e59fc000 e12fff1c 7463ccb8 e59fc000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e10d8 e12fff1c 764b39b4 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e10e8 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e10f8 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1108 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1118 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1128 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     846e1138 00000000 00000000 00000000 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410): 
08-03 10:01:44.285 I/DEBUG   ( 2410): memory near sp:
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14bb0 855b6128 7654e714 84f14bd0 82ac9530  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14bc0 84f14bd0 766099c8 e3a070ad ef9000ad  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14bd0 84b71cf0 84b531d0 82ac9530 84f14bd0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14be0 846e1068 84f15178 84b71cf0 84b531d0  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14bf0 00000000 84f14cb8 845de860 84f15178  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c00 00000000 84f14cc8 846e07f8 84f15178  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c10 84f151c8 ffffffff 7fd19048 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c20 84f15178 ffffffff 846df870 ffffffff  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c30 84599cac ffffffff 0000003a 765c9074  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c40 00000000 84f14e80 7d3d839c 846e0787  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c50 00000000 745c5498 00000001 84b531c8  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c60 00000000 765c99f8 828fd748 00000000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c70 855b6128 7463cb78 00000017 85632010  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c80 7d9cdd80 7db0c110 7fc9d470 745f9f00  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14c90 84f15d6c 84f15178 84f14ca0 846e0ff8  
08-03 10:01:44.285 I/DEBUG   ( 2410):     84f14ca0 7fc9d401 745f9f00 84f15d6c 7db0c110  
08-03 10:01:44.285 I/DEBUG   ( 2410): 
08-03 10:01:44.285 I/DEBUG   ( 2410): code around pc:
08-03 10:01:44.285 I/DEBUG   ( 2410):     400cd198 4006c000 82b25ad8 855b7030 00200000  
08-03 10:01:44.285 I/DEBUG   ( 2410):     400cd1a8 000006df 02c087d8 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd1b8 400cd1b0 400cd1b0 400cd1b8 400cd1b8  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd1c8 84b9edd0 84b71c50 84b4ddf0 84613548  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd1d8 84b354e8 84b354e8 81915fb0 81915fb0  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd1e8 82b25b98 82b25b98 84afa250 84afa250  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd1f8 82a4fdf8 82a4fdf8 84a5a348 84a5a348  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd208 84afa8a0 84afa8a0 84a55bb0 84a55bb0  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd218 84b08958 84b08958 84b31ac8 84b31ac8  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd228 84613870 84613870 84afa878 84afa878  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd238 84b50b40 84b50b40 84aff598 84aff598  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd248 84b1d188 84b1d188 84b1d8c8 84b1d8c8  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd258 846d75c0 846d75c0 84b35460 84b35460  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd268 84a5a390 84a5a390 82903338 82903338  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd278 84b088f8 84b088f8 828fd6c8 828fd6c8  
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cd288 82903728 82903728 84af9fe0 84af9fe0  
08-03 10:01:44.290 I/DEBUG   ( 2410): 
08-03 10:01:44.290 I/DEBUG   ( 2410): code around lr:
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1050 e581c000 e5801000 e581d00c e581b014  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1060 e1a0c00f e581c010 e1a00007 facec82c  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1070 e30b089c e3470675 e5900000 e3500000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1080 1a000007 eaffffff e59dc000 e59de004  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1090 e58ec000 e28dd0b4 e8bd9f80 e1a00007  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e10a0 eb000008 eb000004 e1a01000 e1a07001  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e10b0 e3500000 1afffff8 eafffff2 e59fc000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e10c0 e12fff1c 7d526efc e59fc000 e12fff1c  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e10d0 7463ccb8 e59fc000 e12fff1c 764b39b4  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e10e0 00000000 00000000 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e10f0 00000000 00000000 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1100 00000000 00000000 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1110 00000000 00000000 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1120 00000000 00000000 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1130 00000000 00000000 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410):     846e1140 00000000 00000000 00000000 00000000  
08-03 10:01:44.290 I/DEBUG   ( 2410): 
08-03 10:01:44.290 I/DEBUG   ( 2410): memory map around fault addr 400cd1b8:
08-03 10:01:44.290 I/DEBUG   ( 2410):     400c9000-400cc000 rw- /system/lib/libc.so
08-03 10:01:44.290 I/DEBUG   ( 2410):     400cc000-400da000 rw- 
08-03 10:01:44.290 I/DEBUG   ( 2410):     400da000-400db000 r-x /system/lib/libstdc++.so
08-03 10:01:44.520 I/logserver( 2424): Object Path:/data/system/dropbox/, mask=0x00000080
08-03 10:01:44.520 I/logserver( 2424): event->len=48, mackenzie68@example.net
08-03 10:01:44.520 I/logserver( 2424): process_one_event, can not find this event(mackenzie68@example.net)
08-03 10:01:44.520 I/logserver( 2424): clean_cur_cache:962, system(rm -r /data/log/logcache/13072160/* > /dev/null 2>&1)


We are currently running SkiaSharp 1.53.0.

Any ideas are welcome!
 Comments: 
 Comment 0: Update:

I replaced the current implementation with the following 

`public virtual SKBitmap CreateImageFromStream(Stream stream)
        {
            using (var s = new SKManagedStream(stream))
            {
                var bm = SKBitmap.Decode(s);
                return bm;
            }
        }`

... which is much more elegant and works just fine.
Nevertheless, my first approach should not have caused a SIVSEGV, right?
 Comment 1: @mattleibow Could you post a quick update on the status of this feature? Thanks again for working on this!
 Comment 2: Hi @zone117x. Thanks for the interest. I have not had a look at this yet, especially since there was a "workaround". Are you having this issue too? If at all possible, can you attach a test/repro case so I can investigate.
 Comment 3: I am closing this as I can't reproduce this issue. It may have been fixed some time ago, indirectly. 

This issue can be re-opened if it occurs again.
 Comment 4: Makes sense! You're doing great work by the way! 👍 
{'source': 'GithubIssues', 'repo_name_with_owner': 'mono/SkiaSharp', 'issue_id': 169073779, 'repo_stars': 3117.0}