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Merge pull request #281 from practicalswift/x86_16-segfault

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Crash case: Invalid read of size 8 in tb_flush_x86_64. See #280
This commit is contained in:
Nguyen Anh Quynh 2015-11-30 15:36:32 +07:00
parent 5210423fe4 75a325e8c6
commit d4214150c2
3 changed files with 24 additions and 0 deletions
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1
.gitignore vendored
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@ -113,6 +113,7 @@ eflags_noset
mem_map_large
invalid_read_in_cpu_tb_exec
invalid_write_in_cpu_tb_exec_x86_64
x86_16_segfault
#################

1
tests/regress/Makefile
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@ -18,6 +18,7 @@ TESTS += eflags_noset
TESTS += mem_map_large
TESTS += invalid_read_in_cpu_tb_exec
TESTS += invalid_write_in_cpu_tb_exec_x86_64
TESTS += x86_16_segfault
all: $(TESTS)

22
tests/regress/x86_16_segfault.c Normal file
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@ -0,0 +1,22 @@
#include <unicorn/unicorn.h>
#define BINARY "\x90"
#define MEMORY_SIZE 4 * 1024
#define STARTING_ADDRESS 100 * 1024
int main(int argc, char **argv, char **envp) {
uc_engine *uc;
if (uc_open(UC_ARCH_X86, UC_MODE_16, &uc)) {
printf("uc_open(…) failed\n");
return 1;
}
uc_mem_map(uc, STARTING_ADDRESS, MEMORY_SIZE, UC_PROT_ALL);
if (uc_mem_write(uc, STARTING_ADDRESS, BINARY, sizeof(BINARY) - 1)) {
printf("uc_mem_write(…) failed\n");
return 1;
}
printf("uc_emu_start(…)\n");
uc_emu_start(uc, STARTING_ADDRESS, STARTING_ADDRESS + sizeof(BINARY) - 1, 0, 20);
printf("done\n");
return 0;
}