On Wed, Jun 2, 2021 at 1:48 PM Arnd Bergmann arnd@kernel.org wrote:
From: Michael Weiser michael.weiser@gmx.de
commit 1962682d2b2fbe6cfa995a85c53c069fadda473e upstream.
Stop printing a (ratelimited) kernel message for each instance of an unimplemented syscall being called. Userland making an unimplemented syscall is not necessarily misbehaviour and to be expected with a current userland running on an older kernel. Also, the current message looks scary to users but does not actually indicate a real problem nor help them narrow down the cause. Just rely on sys_ni_syscall() to return -ENOSYS.
Nevermind, I forgot the 4.1.y line had ended. The 4.4 version is still needed though, and also applies to 4.9.
Arnd