The command uname returns "unknown" on Fedora 38,39 and probably 40. There is a similar very old bug here which has not been fixed https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34905
F38: [root@vm~]# uname -a Linux vmcom 6.8.4-100.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Apr 4 20:40:57 UTC 2024 x86_64 GNU/Linux [root@vm~]# uname -i unknown Here is the strace output on F38 # strace uname -pi execve("/usr/bin/uname", ["uname", "-pi"], 0x7ffff4989c48 /* 32 vars */) = 0 brk(NULL) = 0x55fae2442000 arch_prctl(0x3001 /* ARCH_??? */, 0x7ffd9202bd60) = -1 EINVAL (Invalid argument) access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=18475, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 18475, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491b8f000 close(3) = 0 openat(AT_FDCWD, "/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`}\2\0\0\0\0\0"..., 832) = 832 pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784 newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=2448096, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6491b8d000 pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784 mmap(NULL, 1957168, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f64919af000 mmap(0x7f64919d5000, 1429504, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7f64919d5000 mmap(0x7f6491b32000, 315392, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x183000) = 0x7f6491b32000 mmap(0x7f6491b7f000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1d0000) = 0x7f6491b7f000 mmap(0x7f6491b85000, 32048, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f6491b85000 close(3) = 0 mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f64919ac000 arch_prctl(ARCH_SET_FS, 0x7f64919ac740) = 0 set_tid_address(0x7f64919aca10) = 1320 set_robust_list(0x7f64919aca20, 24) = 0 rseq(0x7f64919ad060, 0x20, 0, 0x53053053) = 0 mprotect(0x7f6491b7f000, 16384, PROT_READ) = 0 mprotect(0x55fae0ff3000, 4096, PROT_READ) = 0 mprotect(0x7f6491bc6000, 8192, PROT_READ) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 munmap(0x7f6491b8f000, 18475) = 0 getrandom("\x1b\x52\xa1\xbf\xb0\x7e\x23\x6b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55fae2442000 brk(0x55fae2463000) = 0x55fae2463000 openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=2998, ...}, AT_EMPTY_PATH) = 0 read(3, "# Locale name alias data base.\n#"..., 4096) = 2998 read(3, "", 4096) = 0 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_IDENTIFICATION", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_IDENTIFICATION", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=369, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 369, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491b93000 close(3) = 0 openat(AT_FDCWD, "/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=27012, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 27012, PROT_READ, MAP_SHARED, 3, 0) = 0x7f64919a5000 close(3) = 0 futex(0x7f6491b84a6c, FUTEX_WAKE_PRIVATE, 2147483647) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_MEASUREMENT", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_MEASUREMENT", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=23, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 23, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491b92000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_TELEPHONE", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_TELEPHONE", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=59, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 59, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491b91000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_ADDRESS", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_ADDRESS", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=167, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 167, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491b90000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_NAME", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_NAME", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=77, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 77, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491b8f000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_PAPER", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_PAPER", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=34, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 34, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f64919a4000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_MESSAGES", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_MESSAGES", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=4096, ...}, AT_EMPTY_PATH) = 0 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_MESSAGES/SYS_LC_MESSAGES", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=57, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 57, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f64919a3000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_MONETARY", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_MONETARY", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=286, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 286, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f64919a2000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_COLLATE", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_COLLATE", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=2586930, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 2586930, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491600000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_TIME", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_TIME", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=3284, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 3284, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f64919a1000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_NUMERIC", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_NUMERIC", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=54, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 54, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f64919a0000 close(3) = 0 openat(AT_FDCWD, "/usr/lib/locale/en_US.UTF-8/LC_CTYPE", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/usr/lib/locale/en_US.utf8/LC_CTYPE", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=357584, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 357584, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f6491948000 close(3) = 0 newfstatat(1, "", {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0), ...}, AT_EMPTY_PATH) = 0 write(1, "unknown unknown\n", 16unknown unknown ) = 16 close(1) = 0 close(2) = 0 exit_group(0) = ? +++ exited with 0 +++ Is this a bug in uname? Thank you.