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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-21 21:21:26 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-21 21:21:26 +0200 |
| commit | 4b927bc37359dec23f67d3427fc982945f24f404 (patch) | |
| tree | 245449ef9146942dc7fffd0235b48b7e70a00bf2 /gitlab/issues/target_sparc/host_missing/accel_missing/1394.toml | |
| parent | aa8bd79cec7bf6790ddb01d156c2ef2201abbaab (diff) | |
| download | emulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.tar.gz emulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.zip | |
add gitlab issues in toml format
Diffstat (limited to 'gitlab/issues/target_sparc/host_missing/accel_missing/1394.toml')
| -rw-r--r-- | gitlab/issues/target_sparc/host_missing/accel_missing/1394.toml | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/gitlab/issues/target_sparc/host_missing/accel_missing/1394.toml b/gitlab/issues/target_sparc/host_missing/accel_missing/1394.toml new file mode 100644 index 00000000..c0ef72f4 --- /dev/null +++ b/gitlab/issues/target_sparc/host_missing/accel_missing/1394.toml @@ -0,0 +1,69 @@ +id = 1394 +title = "Byte-swapping issue in getresuid on qemu-user-sparc64" +state = "closed" +created_at = "2022-12-25T13:24:39.830Z" +closed_at = "2023-03-31T11:59:20.559Z" +labels = ["TestCase", "linux-user", "target: sparc"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/1394" +host-os = "Debian bookworm/sid" +host-arch = "x86_64" +qemu-version = "qemu-sparc64 version 7.1.0 (Debian 1:7.1+dfsg-2+b3)" +guest-os = "Debian sid" +guest-arch = "sparc64" +description = """When calling getresuid() in the big-endian sparc64 guest, the uid_t values are written with their 16-bit halves reversed. + +For example, the UID 0x000003e8 (1000) becomes 0x03e80000.""" +reproduce = """A minimal test case looks like this: +```c +#define _GNU_SOURCE +#include <stdio.h> +#include <sys/types.h> +#include <pwd.h> +#include <unistd.h> + +int main(int argc, char **argv) { +\tstruct passwd *pw = getpwuid(geteuid()); +\tif (pw == NULL) { +\t\tperror("getpwuid failure"); +\t\treturn 1; +\t} +\tprintf("getpwuid()->pw_uid=0x%08x\\n", pw->pw_uid); + +\tuid_t ruid = 0, euid = 0, suid = 0; +\tif (getresuid(&ruid, &euid, &suid) != 0) { +\t\tperror("getresuid failure"); +\t\treturn 1; +\t} +\tprintf("getresuid()->suid=0x%08x\\n", suid); + +\treturn 0; +} +``` + +Compile and run with: +``` +$ sparc64-linux-gnu-gcc -Wall -O0 -g -o sid-sparc64/test test.c +$ sudo chroot sid-sparc64 +[chroot] $ qemu-sparc64-static ./test +``` + +Alternatively, static compilation without a chroot is also possible (despite a warning about `getpwuid()`): +``` +$ sparc64-linux-gnu-gcc -static -Wall -O0 -g -o test test.c +$ qemu-sparc64-static ./test +``` + +Expected output: +``` +$ ./test +getpwuid()->pw_uid=0x000003e8 +getresuid()->suid=0x000003e8 +``` + +Actual output: +``` +$ ./test +getpwuid()->pw_uid=0x000003e8 +getresuid()->suid=0x03e80000 +```""" +additional = """I'm not sure if this is a glibc, qemu or kernel issue, but it doesn't occur outside qemu.""" |