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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
commitd0c85e36e4de67af628d54e9ab577cc3fad7796a (patch)
treef8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/permissions/1779955
parent7f4364274750eb8cb39a3e7493132fca1c01232e (diff)
downloadqemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz
qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip
add deepseek and gemma results
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+
+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
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