N'ime mmejuputa futex (ngwa ngwa userspace mutex) oku sistemu, kpochie ojiji ebe nchekwa mgbe achọpụtara ma kpochapụ ya n'efu. Nke a, n'aka nke ya, kwere ka onye na-awakpo ahụ mebie koodu ya na ọnọdụ nke kernel, na ihe niile na-esote site na nche. Ihe ọghọm dị na koodu njikwa njehie.
Ndozi Ihe ọghọm a pụtara na Linux mainline na Jenụwarị 28 na ụbọchị gara aga ụnyaahụ ọ banyere kernels 5.10.12, 5.4.94, 4.19.172, 4.14.218.
N'oge mkparịta ụka nke ndozi a, a tụrụ aro na adịghị ike a dị na kernels niile kemgbe 2008:
https://www.openwall.com/lists/oss-security/2021/01/29/3
FWIW, nkwa a nwere:
Ndozi: 1b7558e457ed ("futexes: idozi mmejọ njikwa na futex_lock_pi")
na ndị ọzọ na-eme bụ site na 2008. Ya mere eleghị anya niile ugbu a
A na-emetụta Linux distros na ntinye ọrụ, belụsọ ihe
ọzọ wepụrụ okwu a na ụfọdụ ụdị kernel.
isi: linux.org.ru