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<TITLE> [Mono-bugs] [Bug 623653] New: [verifier] SIGSEGV in concat_two_strings_with_zero on a bad assembly
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<H1>[Mono-bugs] [Bug 623653] New: [verifier] SIGSEGV in concat_two_strings_with_zero on a bad assembly</H1>
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<B>bugzilla_noreply at novell.com</B>
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<A HREF="mailto:mono-bugs%40lists.ximian.com?Subject=%5BMono-bugs%5D%20%5BBug%20623653%5D%20New%3A%20%5Bverifier%5D%20SIGSEGV%20in%0A%20concat_two_strings_with_zero%20on%20a%20bad%20assembly&In-Reply-To="
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TITLE="[Mono-bugs] [Bug 623653] New: [verifier] SIGSEGV in concat_two_strings_with_zero on a bad assembly">bugzilla_noreply at novell.com
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<I>Mon Jul 19 16:27:04 EDT 2010</I>
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<PRE><A HREF="http://bugzilla.novell.com/show_bug.cgi?id=623653">http://bugzilla.novell.com/show_bug.cgi?id=623653</A>
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<A HREF="http://bugzilla.novell.com/show_bug.cgi?id=623653#c0">http://bugzilla.novell.com/show_bug.cgi?id=623653#c0</A>
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Summary: [verifier] SIGSEGV in concat_two_strings_with_zero on
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a bad assembly
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Classification: Mono
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Product: Mono: Runtime
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Version: SVN
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Platform: x86
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OS/Version: openSUSE 11.3
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Status: NEW
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Severity: Normal
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Priority: P5 - None
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Component: verifier
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AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">rkumpera at novell.com</A>
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ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">spouliot at novell.com</A>
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QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
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Found By: ---
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Blocker: ---
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Created an attachment (id=376957)
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--> (<A HREF="http://bugzilla.novell.com/attachment.cgi?id=376957">http://bugzilla.novell.com/attachment.cgi?id=376957</A>)
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assembly causing the crash
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gdb --args mono --security=core-clr --compile-all bin/System.sigabrt.65023.dll
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Program received signal SIGSEGV, Segmentation fault.
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[Switching to Thread 0xb73deb70 (LWP 14324)]
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0xb7e784a3 in strlen () from /lib/libc.so.6
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(gdb) bt
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#0 0xb7e784a3 in strlen () from /lib/libc.so.6
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#1 0x081fa2ee in concat_two_strings_with_zero (image=0x83b9cc8, s1=0x0, s2=
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0x8525818 "System, Version=2.0.5.0, Culture=neutral,
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PublicKeyToken=7cec85d7bea7798e") at class.c:4374
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#2 0x081fa3d1 in set_failure_from_loader_error (class="System.Net.IWebProxy",
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error=0x85100a0) at class.c:4391
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#3 0x081fafca in mono_class_init (class="System.Net.IWebProxy") at
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class.c:4712
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#4 0x0816f142 in mono_type_is_valid_in_context (ctx=0xb73ddcbc, type={class,
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"System.Net.IWebProxy"}) at verify.c:784
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#5 0x0817dc7a in mono_method_verify
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(method="System.Net.WebRequest:set_DefaultWebProxy ()", level=48) at
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verify.c:4558
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#6 0x081833ed in mono_method_verify_with_current_settings
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(method="System.Net.WebRequest:set_DefaultWebProxy ()", skip_visibility=0) at
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verify.c:5672
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#7 0x0805ba77 in mini_method_verify (cfg=0x84e95d0,
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method="System.Net.WebRequest:set_DefaultWebProxy ()") at mini.c:1289
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#8 0x0805bc92 in mono_compile_is_broken (cfg=0x84e95d0) at mini.c:1338
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#9 0x0806169d in mini_method_compile
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(method="System.Net.WebRequest:set_DefaultWebProxy ()", opts=59861503,
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domain=0x34e70, run_cctors=0, compile_aot=0,
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parts=0) at mini.c:4015
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#10 0x080e22a0 in compile_all_methods_thread_main (args=0xbfffee44) at
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driver.c:878
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#11 0x081e3fa2 in start_wrapper (data=0x8421aa0) at threads.c:747
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#12 0x0826029f in thread_start_routine (args=0x840a7b4) at wthreads.c:285
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#13 0x0828a401 in GC_start_routine (arg=0x5efc0) at pthread_support.c:1390
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#14 0xb7f73b25 in start_thread () from /lib/libpthread.so.0
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#15 0xb7ed546e in clone () from /lib/libc.so.6
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(gdb) up 2
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#2 0x081fa3d1 in set_failure_from_loader_error (class="System.Net.IWebProxy",
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error=0x85100a0) at class.c:4391
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warning: Source file is more recent than executable.
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4391 exception_data = concat_two_strings_with_zero (class->image,
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error->class_name, error->assembly_name);
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(gdb) p error
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$1 = (MonoLoaderError *) 0x85100a0
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(gdb) p *error
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$2 = {exception_type = 7 '\a', class_name = 0x0, assembly_name = 0x8525818
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"System, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e",
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klass = 0x0, member_name = 0x0, ref_only = 0, msg = 0x0}
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no class name is provided, so strlen is called on a NULL value and crash
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--
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Configure bugmail: <A HREF="http://bugzilla.novell.com/userprefs.cgi?tab=email">http://bugzilla.novell.com/userprefs.cgi?tab=email</A>
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------- You are receiving this mail because: -------
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You are the QA contact for the bug.
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</PRE>
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