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bfca3dd3d0added new struct ctl_table uts_kern_table[], but not new enum uts_proc value. It broke the notification mechanism between the sethostname syscall and the pollers of /proc/sys/kernel/hostname. The table uts_kern_table is addressed within uts_proc_notify by the enum value, that's why new enum value is needed. Fixes:bfca3dd3d0("kernel/utsname_sysctl.c: print kernel arch") Reported-by: Torsten Hilbrich <torsten.hilbrich@secunet.com> Signed-off-by: Petr Vorel <pvorel@suse.cz> Link: https://lore.kernel.org/r/20221020150645.11719-1-pvorel@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>