Adds Patch2013 backporting linux-6.12.y stable commit 591f1ac21742
("af_unix: Set gc_in_progress to true in unix_gc()."), the 6.12 backport
of mainline d82ba05263c6 by Kuniyuki Iwashima.
unix_schedule_gc()/wait_for_unix_gc() only set gc_in_progress before
queueing the GC work, so a second schedule racing an in-flight unix_gc()
could leave gc_in_progress false while GC is still running. unix_peek_fpl()
relies on that flag to avoid confusing GC via MSG_PEEK. The fix sets
gc_in_progress inside __unix_gc() itself.
Verified with --fuzz=0 against both the CentOS Stream 10
kernel-6.12.0-211.el10 tag and the extracted 6.12.0-211.34.1.el10_2 tree:
single hunk in net/unix/garbage.c, no fuzz (offset only), and the WRITE_ONCE
is not already present in __unix_gc(). No overlap with the other patches in
this config, which touch arch/x86/kvm, drivers/scsi, drivers/message/fusion,
drivers/net/ethernet/google and fs/btrfs packaging only.
Drops the previous Patch2013 (CVE-2026-64561, KVM: x86: check for
invalid/obsolete root after making MMU pages available), which was sourced
from the still-Draft CentOS Stream 10 MR 3068; the 2013 slot is reused.
Andrew Lukoshko
520e159f6e