diff options
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/other/1346769')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/other/1346769 | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/other/1346769 b/results/classifier/deepseek-2-tmp/output/other/1346769 deleted file mode 100644 index 5d808292..00000000 --- a/results/classifier/deepseek-2-tmp/output/other/1346769 +++ /dev/null @@ -1,37 +0,0 @@ - -/proc/self/maps content returned to 32-bits guest under 64-bits qemu - -Reading /proc/self/maps a user doesn't get a stack record. Not all programs relies on the maps file but some do. - -The bug found by running 32-bits binaries with address sanitizer (Asan) instrumentations under 64-bit qemu. - -$ echo "int main() { return 0; }" > /tmp/test.c -$ gcc -m32 -fsanitize=address -fno-common -Wall -g -fPIC -o /tmp/test /tmp/test.c -$ qemu-i386-static /tmp/test -==4092==AddressSanitizer CHECK failed: /home/michail/Downloads/gcc-4.9.0/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc:63 "(((uptr)&rl >= start && (uptr)&rl < end)) != (0)" (0x0, 0x0) - #0 0xf632ff01 (/home/michail/build/lib32/libasan.so.1+0x53f01) - #1 0xf6333f49 (/home/michail/build/lib32/libasan.so.1+0x57f49) - #2 0xf6338785 (/home/michail/build/lib32/libasan.so.1+0x5c785) - #3 0xf6338bd1 (/home/michail/build/lib32/libasan.so.1+0x5cbd1) - #4 0xf6331baf (/home/michail/build/lib32/libasan.so.1+0x55baf) - #5 0xf6331dca (/home/michail/build/lib32/libasan.so.1+0x55dca) - #6 0xf6331f5a (/home/michail/build/lib32/libasan.so.1+0x55f5a) - #7 0xf6330bd4 (/home/michail/build/lib32/libasan.so.1+0x54bd4) - #8 0xf67ebeec (/lib/ld-linux.so.2+0xeeec) - #9 0xf67de10e (/lib/ld-linux.so.2+0x110e) - -This happened because during initialization Asan can't find stack boundaries. - -For some reasons Qemu wants to report stack boundaries just for several arch targets skipping other ones. This is from linux-user/syscall.c open_self_maps() - -#if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32) - dprintf(fd, "%08llx-%08llx rw-p %08llx 00:00 0 [stack]\n", - (unsigned long long)ts->info->stack_limit, - (unsigned long long)(ts->info->start_stack + - (TARGET_PAGE_SIZE - 1)) & TARGET_PAGE_MASK, - (unsigned long long)0); -#endif - -Not very clear why the case covers just specific targets. - -This bug continues the previously reported issue with not hiden system map http://lists.nongnu.org/archive/html/qemu-devel/2014-07/msg02793.html. \ No newline at end of file |