1 files changed, 66 insertions, 0 deletions
diff --git a/results/classifier/105/semantic/1528239 b/results/classifier/105/semantic/1528239
new file mode 100644
index 00000000..1bffe90b
--- /dev/null
+++ b/results/classifier/105/semantic/1528239
@@ -0,0 +1,66 @@
+semantic: 0.668
+device: 0.490
+instruction: 0.488
+mistranslation: 0.478
+socket: 0.473
+graphic: 0.465
+network: 0.443
+vnc: 0.425
+assembly: 0.420
+KVM: 0.375
+boot: 0.300
+other: 0.226
+
+Unable to debug PIE binaries with QEMU gdb stub.
+
+The issue occurs on current trunk:
+
+max@max:~/build/qemu$ cat test.c
+#include <stdio.h>
+
+int main() {
+  printf("Hello, world!\n");
+  return 0;
+}
+
+max@max:~/build/qemu$ gcc test.c -fPIC -pie -o bad.x
+max@max:~/build/qemu$ ./x86_64-linux-user/qemu-x86_64 -g 1234 bad.x 
+.............................
+
+
+max@max:~/build/qemu$ gdb
+GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
+........................................................................................
+(gdb) file bad.x
+Reading symbols from bad.x...(no debugging symbols found)...done.
+(gdb) b main
+Breakpoint 1 at 0x779
+(gdb) target remote localhost:1234
+Remote debugging using localhost:1234
+Reading symbols from /lib64/ld-linux-x86-64.so.2...warning: the debug information found in "/lib64/ld-2.19.so" does not match "/lib64/ld-linux-x86-64.so.2" (CRC mismatch).
+
+Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/ld-2.19.so...done.
+done.
+Loaded symbols for /lib64/ld-linux-x86-64.so.2
+Error in re-setting breakpoint 1: Cannot access memory at address 0x775
+Error in re-setting breakpoint 1: Cannot access memory at address 0x775
+0x0000004000a042d0 in _start () from /lib64/ld-linux-x86-64.so.2
+(gdb) c
+Continuing.
+[Inferior 1 (Remote target) exited normally]
+(gdb) 
+
+
+max@max:~/build/qemu$ cat config.log
+# Configured with: '/home/max/src/qemu/configure' '--prefix=/home/max/install/qemu' '--target-list=arm-linux-user,aarch64-linux-user,x86_64-linux-user' '--static'
+
+
+W/O QEMU or -pie flag breakpoint on main works fine.
+
+GDB server itself actually supports PIE binaries.
+
+This patch https://<email address hidden>/ fixes the issue.
+
+Patch has been included in QEMU v4.2:
+https://git.qemu.org/?p=qemu.git;a=commitdiff;h=dc12567a53c88d7a91b9
+