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Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/permissions/1779955')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/permissions/1779955 | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/permissions/1779955 b/results/classifier/deepseek-2-tmp/output/permissions/1779955 deleted file mode 100644 index bc711e54b..000000000 --- a/results/classifier/deepseek-2-tmp/output/permissions/1779955 +++ /dev/null @@ -1,31 +0,0 @@ - -qemu linux-user requires read permissions on memory passed to syscalls that should only need write access - -When read() function takes an mmap'ed address as output buffer, it returns EFAULT. The expected behavior is it should just work. - -The following code works for qemu-system-arm, but not for qemu-arm-static. - - - -Steps to reproduce (please substitute /path/to/qemu-arm-static with the path of the binary, and /tmp/a.cpp with the example source code attached): - -# First register binfmt_misc -[hidden]$ docker run --rm --privileged multiarch/qemu-user-static:register --reset - -# Compile the code and run -[hidden]$ docker run --rm -it -v /tmp/a.cpp:/tmp/a.cpp -v /path/to/qemu-arm-static:/usr/bin/qemu-arm-static arm32v7/ubuntu:18.04 bash -c '{ apt update -y && apt install -y g++; } >& /dev/null && g++ -std=c++14 /tmp/a.cpp -o /tmp/a.out && echo hehe > /tmp/haha.txt && /tmp/a.out' -ofd=3 -ftruncate=0 -mmap=0xff3f5000 -fd=4 -0xff3f5023 -1 14 - - - -The expected result in qemu-system-arm as well as natively on x86_64 host: -hidden$ ./a.out -ofd=3 -ftruncate=0 -mmap=0xb6fb7000 -fd=4 -0xb6fb7023 5 0 \ No newline at end of file |