top: fix sort-by-memory when beg_task is reset

Resolves: RHEL-176043

procps-ng.spec

@@ -4,7 +4,7 @@
 Summary: System and process monitoring utilities
 Name: procps-ng
 Version: 4.0.4
-Release: 12%{?dist}
+Release: 13%{?dist}
 License: GPL-2.0-or-later AND LGPL-2.0-or-later AND LGPL-2.1-or-later
 URL: https://sourceforge.net/projects/procps-ng/
 
@@ -17,6 +17,7 @@ Patch4: sysctl-succ-on-fail.patch
 Patch5: ps-etime-overflow.patch
 Patch6: uptime-w-user-sessions-only.patch
 Patch7: uptime-bad-rounding.patch
+Patch8: top-sort-by-mem-begtask-reset.patch
 
 BuildRequires: make
 BuildRequires: ncurses-devel
@@ -153,6 +154,10 @@ ln -s %{_bindir}/pidof %{buildroot}%{_sbindir}/pidof
 %files i18n -f %{name}.lang
 
 %changelog
+* Tue May 12 2026 Jan Rybar <jrybar@redhat.com> - 4.0.4-13
+- top: fix sort-by-memory when beg_task is reset
+- Resolves: RHEL-176043
+
 * Thu Apr 30 2026 Jan Rybar <jrybar@redhat.com> - 4.0.4-12
 - uptime: bad time rounding when using -p
 - Resolves: RHEL-60825

top-sort-by-mem-begtask-reset.patch

@@ -0,0 +1,28 @@
+diff --git a/src/top/top.c b/src/top/top.c
+index 8bf5727..a2bc500 100644
+--- a/src/top/top.c
++++ b/src/top/top.c
+@@ -5892,6 +5892,7 @@ static void keys_task (int ch) {
+ #endif
+                if (p >= w->procflgs) {
+                   w->rc.sortindx = *p;
++                  w->begtask = 0;
+ #ifndef TREE_NORESET
+                   OFFw(w, Show_FOREST);
+ #endif
+@@ -5913,6 +5914,7 @@ static void keys_task (int ch) {
+ #endif
+                if (p < w->procflgs + w->maxpflgs) {
+                   w->rc.sortindx = *p;
++                  w->begtask = 0;
+ #ifndef TREE_NORESET
+                   OFFw(w, Show_FOREST);
+ #endif
+@@ -6235,6 +6237,7 @@ static void keys_xtra (int ch) {
+       default:                    // keep gcc happy
+          break;
+    }
++   w->begtask = 0;
+ // some have objected to this message, so we'll just keep silent...
+ // show_msg(fmtmk("%s sort compatibility key honored", xmsg));
+ } // end: keys_xtra