Hello Mikhail, Please file a bug report so we can properly track this issue.
http://bugzilla.xamarin.com Miguel On Thu, Jun 16, 2016 at 5:04 AM, Mikhail Filippov <mikh...@filippov.me> wrote: > I found problem in Mono in named mutex I have repro program: > using System; > using System.Threading; > > namespace Crasher > { > internal class Program > { > public static void Main (string[] args) > { > var a = ""; > for (var i = 0; i < 100; i++) > { > new Thread(Crasher).Start(); > } > Console.WriteLine(a); > Console.ReadLine(); > } > > private static void Crasher(){ > var rnd = new Random(); > while (true) > { > Thread.Sleep(rnd.Next(100, 10000)); > using (var mutex = new Mutex(false, > "Global\\TEST")) > { > var owner = false; > try > { > owner = > mutex.WaitOne(TimeSpan.FromMinutes(1)); > } > finally > { > if (owner) > { > > mutex.ReleaseMutex(); > } > } > Console.WriteLine ("PING"); > } > Thread.Sleep(rnd.Next(100, 10000)); > } > } > } > } > > It program crached mono after few seconds. > I see namedmutex_create and namedmutex_release use different locks. > First time I found it problem when run Nuget client on mono. > I verify repro on mono 4.2, 4.4, and master. > Anybody can help me resolve this issue? > On 4.4.0 native crash: > namedmutex_create: error creating mutex handle > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > _wapi_handle_unref_full: Attempting to unref unused handle 0x4e0 > PING > PING > namedmutex_create: error creating mutex handle > PING > PING > PING > PING > PING > PING > _wapi_handle_ref: Attempting to ref unused handle 0x4e3 > * Assertion at ../../mono/utils/mono-os-mutex.h:135, condition `res != > EINVAL' not met > > Stacktrace: > > at <unknown> <0xffffffff> > at (wrapper managed-to-native) > System.Threading.WaitHandle.WaitOne_internal > (System.Threading.WaitHandle,intptr,int,bool) <0x00073> > at System.Threading.WaitHandle.WaitOne (System.TimeSpan,bool) <0x0009b> > at System.Threading.WaitHandle.WaitOne (System.TimeSpan) <0x0001d> > at Crasher.Program.Crasher () <0x000f0> > at System.Threading.ThreadHelper.ThreadStart_Context (object) <0x0009a> > at System.Threading.ExecutionContext.RunInternal > (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) > <0x001c6> > at System.Threading.ExecutionContext.Run > (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) > <0x00020> > at System.Threading.ExecutionContext.Run > (System.Threading.ExecutionContext,System.Threading.ContextCallback,object) > <0x00059> > at System.Threading.ThreadHelper.ThreadStart () <0x0002e> > at (wrapper runtime-invoke) object.runtime_invoke_void__this__ > (object,intptr,intptr,intptr) <0x000e0> > > Native stacktrace: > > 0 mono 0x0000000103f9b0ca > mono_handle_native_sigsegv + 271 > 1 libsystem_platform.dylib 0x00007fff854c252a > _sigtramp + 26 > 2 mono 0x00000001042036a4 tmp_dir > + 5316 > 3 libsystem_c.dylib 0x00007fff935536e7 abort + > 129 > 4 mono 0x000000010410d1f0 > monoeg_g_log + 0 > 5 mono 0x000000010410d175 > monoeg_g_logv + 83 > 6 mono 0x000000010410d31a > monoeg_assertion_message + 143 > 7 mono 0x00000001040e453d > _wapi_handle_timedwait_signal_handle + 1153 > 8 mono 0x00000001040f4aec > wapi_WaitForSingleObjectEx + 606 > 9 mono 0x000000010406c01c > mono_wait_uninterrupted + 130 > 10 mono 0x000000010406c1ff > ves_icall_System_Threading_WaitHandle_WaitOne_internal + 73 > 11 ??? 0x0000000108130b54 0x0 + > 4430433108 > 12 mscorlib.dll.dylib 0x00000001062ed7ae > System_Threading_WaitHandle_WaitOne_System_TimeSpan + 30 > 13 mscorlib.dll.dylib 0x0000000106140e5b > System_Threading_ThreadHelper_ThreadStart_Context_object + 155 > 14 mscorlib.dll.dylib 0x000000010613f331 > System_Threading_ExecutionContext_Run_System_Threading_ExecutionContext_System_Threading_ContextCallback_object_bool > + 33 > 15 mono 0x0000000103f04876 > mono_jit_runtime_invoke + 1578 > 16 mono 0x0000000104090c23 > mono_runtime_invoke + 130 > 17 mono 0x0000000104070409 > start_wrapper + 424 > 18 mono 0x0000000104106cb1 > inner_start_thread + 305 > 19 libsystem_pthread.dylib 0x00007fff989c399d > _pthread_body + 131 > 20 libsystem_pthread.dylib 0x00007fff989c391a > _pthread_body + 0 > 21 libsystem_pthread.dylib 0x00007fff989c1351 > thread_start + 13 > > > > On master UnhandlerException: > namedmutex_create: error creating mutex handle > PING > PING > PING > PING > PING > _wapi_handle_unref_full: Attempting to unref unused handle 0x4eb > PING > PING > PING > _wapi_handle_unref_full: Attempting to unref unused handle 0x4ec > PING > PING > PING > PING > PING > PING > PING > PING > _wapi_handle_unref_full: Attempting to unref unused handle 0x4ee > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > PING > _wapi_handle_unref_full: Attempting to unref unused handle 0x4f1 > PING > PING > PING > PING > PING > PING > PING > > Unhandled Exception: > System.ApplicationException: Mutex is not owned > at System.Threading.Mutex.ReleaseMutex () <0x10e769ef0 + 0x00043> in > <filename unknown>:0 > at (wrapper remoting-invoke-with-check) > System.Threading.Mutex:ReleaseMutex () > at Crasher.Program.Crasher () <0x10cfdfc80 + 0x00129> in <filename > unknown>:0 > at System.Threading.ThreadHelper.ThreadStart_Context (System.Object > state) <0x10e5fb710 + 0x00096> in <filename unknown>:0 > at System.Threading.ExecutionContext.RunInternal > (System.Threading.ExecutionContext executionContext, > System.Threading.ContextCallback callback, System.Object state, > System.Boolean preserveSyncCtx) <0x10e5f93b0 + 0x001c6> in <filename > unknown>:0 > at System.Threading.ExecutionContext.Run > (System.Threading.ExecutionContext executionContext, > System.Threading.ContextCallback callback, System.Object state, > System.Boolean preserveSyncCtx) <0x10e5f9380 + 0x00020> in <filename > unknown>:0 > at System.Threading.ExecutionContext.Run > (System.Threading.ExecutionContext executionContext, > System.Threading.ContextCallback callback, System.Object state) > <0x10e5f92d0 + 0x00059> in <filename unknown>:0 > at System.Threading.ThreadHelper.ThreadStart () <0x10e5fb8c0 + 0x0002e> > in <filename unknown>:0 > _wapi_handle_unref_full: Attempting to unref unused handle 0x4f1 > [ERROR] FATAL UNHANDLED EXCEPTION: Nested exception trying to figure out > what went wrong > _______________________________________________ > Mono-devel-list mailing list > Mono-devel-list@lists.ximian.com > http://lists.ximian.com/mailman/listinfo/mono-devel-list >
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