Details
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Bug
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Resolution: Out of scope
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P1: Critical
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None
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6.6
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None
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Linux/Wayland,
Description
Hi,
We have some people reporting crashing Qt apps in Fedora 40, where we have Qt compiled with GCC 14. This doesn't seem to occur on Fedora 39 with older GCC and it also seem to affect only a subset of users.
The backtrace look like:
Program received signal SIGILL, Illegal instruction. aeshash128 (p=p@entry=0x555555605ba0 "Q", len=20, seed=<optimized out>, seed2=3795334102978778646) at /usr/src/debug/qt6-qtbase-6.6.1-5.fc40.x86_64/src/corelib/tools/qhash.cpp:774 774 return aeshash128_16to32(state.state0, state.state1(), src, srcend); (gdb) bt #0 aeshash128 (p=p@entry=0x555555605ba0 "Q", len=20, seed=<optimized out>, seed2=3795334102978778646) at /usr/src/debug/qt6-qtbase-6.6.1-5.fc40.x86_64/src/corelib/tools/qhash.cpp:774 #1 0x00007ffff6f0ed0c in aeshash (seed2=<optimized out>, seed=<optimized out>, len=<optimized out>, p=0x555555605ba0 "Q") at /usr/src/debug/qt6-qtbase-6.6.1-5.fc40.x86_64/src/corelib/tools/qhash.cpp:788 #2 0x00007ffff6f0ed63 in qHash (key=..., seed=<optimized out>) at /usr/src/debug/qt6-qtbase-6.6.1-5.fc40.x86_64/src/corelib/tools/qhash.cpp:963 #3 0x00007ffff7b9121f in qHash (seed=<optimized out>, key=<optimized out>) at /usr/include/qt6/QtCore/qhashfunctions.h:155 #4 QHashPrivate::calculateHash<QString> (seed=<optimized out>, t=<optimized out>) at /usr/include/qt6/QtCore/qhash.h:57 #5 QHashPrivate::Data<QHashPrivate::Node<QString, void (*)()> >::findBucket (this=0x555555605530, key=<optimized out>) at /usr/include/qt6/QtCore/qhash.h:683 #6 0x00007ffff7b8aad5 in QHashPrivate::Data<QHashPrivate::Node<QString, void (*)()> >::findNode (key=..., this=0x555555605530) at /usr/include/qt6/QtCore/qhash.h:700 #7 QHash<QString, void (*)()>::contains (this=0x7ffff7dd9228 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS_metaTypeData> >::instance()::holder+168>, key=...) at /usr/include/qt6/QtCore/qhash.h:995 #8 QQmlMetaType::qmlInsertModuleRegistration (uri=..., registerFunction=registerFunction@entry=0x7ffff7c748a0 <qml_register_types_QtQml_Base()>) at /usr/src/debug/qt6-qtdeclarative-6.6.1-3.fc40.x86_64/src/qml/qml/qqmlmetatype.cpp:281 #9 0x00007ffff7ba7cbd in QQmlModuleRegistration::QQmlModuleRegistration (this=this@entry=0x7ffff7dd9658 <registration>, uri=uri@entry=0x7ffff7cecfa4 "QtQml.Base", registerFunction=registerFunction@entry=0x7ffff7c748a0 <qml_register_types_QtQml_Base()>) at /usr/src/debug/qt6-qtdeclarative-6.6.1-3.fc40.x86_64/src/qml/qml/qqmlmoduleregistration.cpp:18 #10 0x00007ffff78d440a in __static_initialization_and_destruction_0 () at /usr/src/debug/qt6-qtdeclarative-6.6.1-3.fc40.x86_64/redhat-linux-build/src/qml/qml_qmltyperegistrations.cpp:88 #11 _GLOBAL__sub_I_qml_qmltyperegistrations.cpp(void) () at /usr/src/debug/qt6-qtdeclarative-6.6.1-3.fc40.x86_64/redhat-linux-build/src/qml/qml_qmltyperegistrations.cpp:88 #12 0x00007ffff7fce277 in call_init (env=0x7fffffffe278, argv=0x7fffffffe268, argc=1, l=<optimized out>) at dl-init.c:74 #13 call_init (l=<optimized out>, argc=1, argv=0x7fffffffe268, env=0x7fffffffe278) at dl-init.c:26 #14 0x00007ffff7fce36d in _dl_init (main_map=0x7ffff7ffe2e0, argc=1, argv=0x7fffffffe268, env=0x7fffffffe278) at dl-init.c:121 #15 0x00007ffff7fe53d0 in _dl_start_user () at /lib64/ld-linux-x86-64.so.2 #16 0x0000000000000001 in ??? () #17 0x00007fffffffe51f in ??? () #18 0x0000000000000000 in ??? ()
Here is also output from /proc/cpuinfo from one of the users:
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 122 model name : Intel(R) Pentium(R) Silver N5000 CPU @ 1.10GHz stepping : 1 microcode : 0x3e cpu MHz : 1890.327 cache size : 4096 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 24 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch cpuid_fault cat_l2 pti cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust smep erms mpx rdt_a rdseed smap clflushopt intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts vnmi umip rdpid md_clear arch_capabilities vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs ept_mode_based_exec tsc_scaling bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass rfds bogomips : 2188.80 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 122 model name : Intel(R) Pentium(R) Silver N5000 CPU @ 1.10GHz stepping : 1 microcode : 0x3e cpu MHz : 1890.346 cache size : 4096 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 24 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch cpuid_fault cat_l2 pti cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust smep erms mpx rdt_a rdseed smap clflushopt intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts vnmi umip rdpid md_clear arch_capabilities vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs ept_mode_based_exec tsc_scaling bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass rfds bogomips : 2188.80 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 122 model name : Intel(R) Pentium(R) Silver N5000 CPU @ 1.10GHz stepping : 1 microcode : 0x3e cpu MHz : 1890.308 cache size : 4096 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 4 apicid : 4 initial apicid : 4 fpu : yes fpu_exception : yes cpuid level : 24 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch cpuid_fault cat_l2 pti cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust smep erms mpx rdt_a rdseed smap clflushopt intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts vnmi umip rdpid md_clear arch_capabilities vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs ept_mode_based_exec tsc_scaling bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass rfds bogomips : 2188.80 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 122 model name : Intel(R) Pentium(R) Silver N5000 CPU @ 1.10GHz stepping : 1 microcode : 0x3e cpu MHz : 1890.308 cache size : 4096 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 6 initial apicid : 6 fpu : yes fpu_exception : yes cpuid level : 24 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch cpuid_fault cat_l2 pti cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust smep erms mpx rdt_a rdseed smap clflushopt intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts vnmi umip rdpid md_clear arch_capabilities vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs ept_mode_based_exec tsc_scaling bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass rfds bogomips : 2188.80 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management:
I don't know if this is a possible issue in GCC 14 or issue in Qt, but there have been mentions of similar crashes in non-Qt binaries.