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authorChristian Krinitsin <mail@krinitsin.com>2025-06-16 16:59:00 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-16 16:59:33 +0000
commit9aba81d8eb048db908c94a3c40c25a5fde0caee6 (patch)
treeb765e7fb5e9a3c2143c68b0414e0055adb70e785 /results/classifier/118/virtual/22219210
parentb89a938452613061c0f1f23e710281cf5c83cb29 (diff)
downloadqemu-analysis-9aba81d8eb048db908c94a3c40c25a5fde0caee6.tar.gz
qemu-analysis-9aba81d8eb048db908c94a3c40c25a5fde0caee6.zip
add 18th iteration of classifier
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+virtual: 0.877
+x86: 0.860
+architecture: 0.818
+graphic: 0.701
+performance: 0.498
+hypervisor: 0.491
+device: 0.489
+mistranslation: 0.472
+semantic: 0.387
+VMM: 0.364
+network: 0.323
+ppc: 0.297
+TCG: 0.285
+user-level: 0.273
+socket: 0.244
+debug: 0.225
+PID: 0.214
+vnc: 0.204
+files: 0.202
+peripherals: 0.201
+kernel: 0.166
+register: 0.150
+permissions: 0.141
+risc-v: 0.123
+i386: 0.120
+KVM: 0.099
+arm: 0.093
+assembly: 0.078
+boot: 0.070
+
+[BUG][CPU hot-plug]CPU hot-plugs cause the qemu process to coredump
+
+Hello,Recently, when I was developing CPU hot-plugs under the loongarch
+architecture,
+I found that there was a problem with qemu cpu hot-plugs under x86
+architecture,
+which caused the qemu process coredump when repeatedly inserting and
+unplugging
+the CPU when the TCG was accelerated.
+
+
+The specific operation process is as follows:
+
+1.Use the following command to start the virtual machine
+
+qemu-system-x86_64 \
+-machine q35  \
+-cpu Broadwell-IBRS \
+-smp 1,maxcpus=4,sockets=4,cores=1,threads=1 \
+-m 4G \
+-drive file=~/anolis-8.8.qcow2  \
+-serial stdio   \
+-monitor telnet:localhost:4498,server,nowait
+
+
+2.Enter QEMU Monitor via telnet for repeated CPU insertion and unplugging
+
+telnet 127.0.0.1 4498
+(qemu) device_add
+Broadwell-IBRS-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=cpu1
+(qemu) device_del cpu1
+(qemu) device_add
+Broadwell-IBRS-x86_64-cpu,socket-id=1,core-id=0,thread-id=0,id=cpu1
+3.You will notice that the QEMU process has a coredump
+
+# malloc(): unsorted double linked list corrupted
+Aborted (core dumped)
+