Hi,
I didn't find a kernel requirement in latest util-linux 2.39 release
notes and because a fallback is mentioned I gave it a try on a system
running latest LTS kernel 5.10.180.
After updating to util=linux 2.39 system immediately failed when trying
to use mount command.
I.e.
mount --make-slave /proc
failed with:
mount: /proc: mount(2) system call failed: Function not implemented.
dmesg(1) may have more information after failed mount system call.
Nothing in dmesg about it.
strace shows
mount_setattr(3, "", AT_EMPTY_PATH, {attr_set=0, attr_clr=0, propagation=MS_SLAVE, userns_fd=0}, 32) = -1 ENOSYS (Function not implemented)
Configure output shows
checking for syscall mount_setattr... SYS_mount_setattr
But this is coming from Linux headers (I have most recent Linux headers
from kernel 6.3 installed).
Not sure if this is the problem but using most recent Linux headers with
older kernel shouldn't be a problem in general according to
https://sourceware.org/glibc/wiki/FAQ#What_version_of_the_Linux_kernel_headers_should_be_used.3F
Booting a newer kernel (I tried 5.15.112) helped (I guess because the
system call was added in 5.12).
Thanks!
--
Regards,
Thomas
