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authorChristian Krinitsin <mail@krinitsin.com>2025-07-08 13:28:15 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-08 13:28:28 +0200
commit5aa276efcbd67f4300ca1a7f809c6e00aadb03da (patch)
tree9b8f0e074014cda8d42f5a97a95bc25082d8b764 /results/classifier/zero-shot-user-mode/instruction/1528239
parent1a3c4faf4e0a25ed0b86e8739d5319a634cb9112 (diff)
downloademulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.tar.gz
emulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.zip
restructure results
Diffstat (limited to 'results/classifier/zero-shot-user-mode/instruction/1528239')
-rw-r--r--results/classifier/zero-shot-user-mode/instruction/152823951
1 files changed, 51 insertions, 0 deletions
diff --git a/results/classifier/zero-shot-user-mode/instruction/1528239 b/results/classifier/zero-shot-user-mode/instruction/1528239
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+++ b/results/classifier/zero-shot-user-mode/instruction/1528239
@@ -0,0 +1,51 @@
+instruction: 0.422
+runtime: 0.310
+syscall: 0.268
+
+
+
+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.
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