!80 pmap: increase memory allocation failure judgment

From: @hd-zhoujie 
Reviewed-by: @SuperSix173 
Signed-off-by: @SuperSix173

backport-pmap-Increase-memory-allocation-failure-judgment.patch

@@ -0,0 +1,41 @@
+From b51ef773ad5cbd3eb9e348df4f70eb03307ce044 Mon Sep 17 00:00:00 2001
+From: EulerOSWander <314264452@qq.com>
+Date: Mon, 12 Jun 2023 14:19:30 +0800
+Subject: [PATCH] pmap: Increase memory allocation failure judgment
+
+Call trace:
+  #0 __vsnprintf_internal
+  #1 0x00007f967aedd656 in __GI___snprintf
+  #2 0x00005612da28c707 in snprintf
+  #3 config_read (rc_filename=<optimized out>) at pmap.c:885
+  #4 0x00005612da28b8c0 int main at pmap.c:1144
+
+The above stack is caused by calling a null pointer
+after the memory allocation fails. Increase the null
+pointer judgment.
+
+signed-off-by: zhoujie <zhoujie133@huawei.com>
+---
+ src/pmap.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/pmap.c b/src/pmap.c
+index 658b2501..74d57dab 100644
+--- a/src/pmap.c
++++ b/src/pmap.c
+@@ -881,7 +881,11 @@ static int config_read (char *rc_filename)
+ 					}
+ 
+ 					/* add the field in the list */
+-					cnf_listnode = calloc(1, sizeof *cnf_listnode);
++					if (!(cnf_listnode = calloc(1, sizeof *cnf_listnode))) {
++						xwarnx(_("memory allocation failed"));
++						fclose(f);
++						return 0;
++					}
+ 					snprintf(cnf_listnode -> description, sizeof(cnf_listnode -> description), "%s", token);
+ 					cnf_listnode -> next = cnf_listhead;
+ 					cnf_listhead = cnf_listnode;
+-- 
+2.33.0
+

procps-ng.spec

@@ -1,6 +1,6 @@
 Name: 		procps-ng
 Version: 	4.0.2
-Release:	4
+Release:	5
 Summary: 	Utilities that provide system information.
 License: 	GPL+ and GPLv2 and GPLv2+ and GPLv3+ and LGPLv2+
 URL: 		https://sourceforge.net/projects/procps-ng/
@@ -16,6 +16,7 @@ Patch4:		backport-top-address-the-missing-guest-tics-for-summary-area.patch
 Patch5:		backport-0001-ps-address-missing-or-corrupted-fields-with-m-option.patch
 Patch6:		backport-0002-ps-trade-previous-fix-for-final-solution-to-m-option.patch
 Patch7:		backport-top-lessen-summary-cpu-distortions-with-first-displa.patch
+Patch8:		backport-pmap-Increase-memory-allocation-failure-judgment.patch
 
 BuildRequires: 	ncurses-devel libtool autoconf automake gcc gettext-devel systemd-devel
 
@@ -98,6 +99,9 @@ ln -s %{_bindir}/pidof %{buildroot}%{_sbindir}/pidof
 %{_mandir}/man*
 
 %changelog
+* Mon Jun 26 2023 zhoujie <zhoujie133@huawei.com> - 4.0.2-5
+- pamp: increase memory allocation failure judgment 
+
 * Tue Jun 13 2023 zhoujie <zhoujie133@huawei.com> - 4.0.2-4
 - top: first time display delay