From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 3D8003840002; Fri, 16 Jul 2021 19:43:57 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3D8003840002 From: "franek.balcerak at o2 dot pl" To: gcc-bugs@gcc.gnu.org Subject: [Bug sanitizer/101476] New: AddressSanitizer check failed, points out a (potentially) non-existing stack error Date: Fri, 16 Jul 2021 19:43:56 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: sanitizer X-Bugzilla-Version: 11.1.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: franek.balcerak at o2 dot pl X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter cc target_milestone attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Jul 2021 19:43:57 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101476 Bug ID: 101476 Summary: AddressSanitizer check failed, points out a (potentially) non-existing stack error Product: gcc Version: 11.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: sanitizer Assignee: unassigned at gcc dot gnu.org Reporter: franek.balcerak at o2 dot pl CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxi= n at gcc dot gnu.org Target Milestone: --- Created attachment 51167 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51167&action=3Dedit the preprocessed file Is an issue with GCC 10.3 and GCC 11.1 C language x86_64-linux-gnu Ubuntu 11.1.0-1ubuntu1~21.04 Configured with: ../src/configure -v --with-pkgversion=3D'Ubuntu 11.1.0-1ubuntu1~21.04' --with-bugurl=3Dfile:///usr/share/doc/gcc-11/README.= Bugs --enable-languages=3Dc,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix= =3D/usr --with-gcc-major-version-only --program-suffix=3D-11 --program-prefix=3Dx86_64-linux-gnu- --enable-shared --enable-linker-build-= id --libexecdir=3D/usr/lib --without-included-gettext --enable-threads=3Dposix --libdir=3D/usr/lib --enable-nls --enable-bootstrap --enable-clocale=3Dgnu --enable-libstdcxx-debug --enable-libstdcxx-time=3Dyes --with-default-libstdcxx-abi=3Dnew --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-= zlib --enable-libphobos-checking=3Drelease --with-target-system-zlib=3Dauto --enable-objc-gc=3Dauto --enable-multiarch --disable-werror --enable-cet --with-arch-32=3Di686 --with-abi=3Dm64 --with-multilib-list=3Dm32,m64,mx32 --enable-multilib --with-tune=3Dgeneric --enable-offload-targets=3Dnvptx-none=3D/build/gcc-11-RPS7jb/gcc-11-11.1.0/= debian/tmp-nvptx/usr,amdgcn-amdhsa=3D/build/gcc-11-RPS7jb/gcc-11-11.1.0/deb= ian/tmp-gcn/usr --without-cuda-driver --enable-checking=3Drelease --build=3Dx86_64-linux-gnu --host=3Dx86_64-linux-gnu --target=3Dx86_64-linux-gnu --with-build-config=3Dbootstrap-lto-lean --enable-link-serialization=3D2 Command: gcc bug.i -o bug -fsanitize=3Daddress -pthread && ./bug Output: =3D=3D164550=3D=3DAddressSanitizer CHECK failed: ../../../../src/libsanitizer/asan/asan_thread.cpp:367 "((ptr[0] =3D=3D kCurrentStackFrameMagic)) !=3D (0)" (0x0, 0x0) #0 0x7f649a4fdd68 in AsanCheckFailed ../../../../src/libsanitizer/asan/asan_rtl.cpp:74 #1 0x7f649a51e69e in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) ../../../../src/libsanitizer/sanitizer_common/sanitizer_termination.cpp:78 #2 0x7f649a5034ec in __asan::AsanThread::GetStackFrameAccessByAddr(unsi= gned long, __asan::AsanThread::StackFrameAccess*) ../../../../src/libsanitizer/asan/asan_thread.cpp:367 #3 0x7f649a46deab in __asan::GetStackAddressInformation(unsigned long, unsigned long, __asan::StackAddressDescription*) ../../../../src/libsanitizer/asan/asan_descriptions.cpp:203 #4 0x7f649a46f2e8 in __asan::AddressDescription::AddressDescription(unsigned long, unsigned long, bool) ../../../../src/libsanitizer/asan/asan_descriptions.cpp:455 #5 0x7f649a46f2e8 in __asan::AddressDescription::AddressDescription(unsigned long, unsigned long, bool) ../../../../src/libsanitizer/asan/asan_descriptions.cpp:439 #6 0x7f649a471a94 in __asan::ErrorGeneric::ErrorGeneric(unsigned int, unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long) ../../../../src/libsanitizer/asan/asan_errors.cpp:389 #7 0x7f649a4fd385 in __asan::ReportGenericError(unsigned long, unsigned long, unsigned long, unsigned long, bool, unsigned long, unsigned int, bool) ../../../../src/libsanitizer/asan/asan_report.cpp:476 #8 0x7f649a494038 in __interceptor_sigaltstack ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors= .inc:9996 #9 0x7f649a512bfd in __sanitizer::UnsetAlternateSignalStack() ../../../../src/libsanitizer/sanitizer_common/sanitizer_posix_libcdep.cpp:1= 94 #10 0x7f649a5029ec in __asan::AsanThread::Destroy() ../../../../src/libsanitizer/asan/asan_thread.cpp:104 #11 0x7f649a426430 in __nptl_deallocate_tsd nptl/pthread_create.c:303 #12 0x7f649a427470 in __nptl_deallocate_tsd nptl/pthread_create.c:258 #13 0x7f649a427470 in start_thread nptl/pthread_create.c:484 #14 0x7f649a349d52 in clone (/lib/x86_64-linux-gnu/libc.so.6+0x117d52) .i file attached. Additional notes: does not trigger a segfault when not using a sanitizer. Removing the sanitizer and then adding the -fstack-protector-all flag does = not crash the program. That makes me think it might not be a problem with the c= ode.=