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+id = 579
+title = "chown() fails when it should succeed in QEMU user mode on Linux/sparc64"
+state = "opened"
+created_at = "2021-08-29T15:13:31.203Z"
+closed_at = "n/a"
+labels = ["linux-user"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/579"
+host-os = "Ubuntu 20.04"
+host-arch = "x86_64"
+qemu-version = "6.1.0"
+guest-os = "Linux"
+guest-arch = "sparc64"
+description = """The `chown()` function fails, instead of succeeding, in a particular situation."""
+reproduce = """[foo.c](/uploads/630d9b83671a071f4ded4da43b6c1b9b/foo.c)
+
+1.
+```
+# apt install g++-10-sparc64-linux-gnu
+# mkdir -p /usr/sparc64-linux-gnu/etc
+# touch /usr/sparc64-linux-gnu/etc/ld.so.cache
+```
+2.
+```
+$ sparc64-linux-gnu-gcc-10 -Wall -static foo.c
+```
+[a.out](/uploads/bbab43a1b78e6d16ee13e0eff5e963a5/a.out)
+
+3. Transfer the a.out file to a Linux/sparc64 machine; execute these commands there:
+```
+$ id
+```
+Verify that you are in 2 or more groups.
+```
+$ touch file
+$ ln -s file link
+$ ln -s link link2
+$ ./a.out; echo $?
+```
+It prints `0`.
+
+4.
+```
+$ id
+```
+Verify that you are in 2 or more groups.
+```
+$ touch file
+$ ln -s file link
+$ ln -s link link2
+$ QEMU_LD_PREFIX=/usr/sparc64-linux-gnu ~/inst-qemu/6.1.0/bin/qemu-sparc64 ./a.out; echo $?
+```
+Expected: `0`
+Actual:
+```
+chown: Operation not permitted
+1
+```"""
+additional = """"""