UNAME26 is a mechanism to report Linux's version as 2.6.x, for compatibility with old/broken software. Because of the way it is implemented, it needs to be adjusted to handle version 5.0.
Signed-off-by: Jonathan Neuschäfer <j.neuschae...@gmx.net> --- kernel/sys.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/sys.c b/kernel/sys.c index a48cbf1414b8..479f4ecdb405 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1208,6 +1208,7 @@ DECLARE_RWSEM(uts_sem); * Work around broken programs that cannot handle "Linux 3.0". * Instead we map 3.x to 2.6.40+x, so e.g. 3.0 would be 2.6.40 * And we map 4.x to 2.6.60+x, so 4.0 would be 2.6.60. + * We map 5.x to 2.6.81+x, so 5.0 would be 2.6.81. */ static int override_release(char __user *release, size_t len) { @@ -1227,7 +1228,7 @@ static int override_release(char __user *release, size_t len) break; rest++; } - v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 60; + v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 81; copy = clamp_t(size_t, len, 1, sizeof(buf)); copy = scnprintf(buf, copy, "2.6.%u%s", v, rest); ret = copy_to_user(release, buf, copy + 1); -- 2.20.1