fix divison-by-zero in cpu statistics Resolves: #501210

This commit is contained in:
Jan Šafránek 2009-05-18 10:21:21 +00:00
parent e7fa779a51
commit 111aa30899
3 changed files with 34 additions and 32 deletions

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@ -1,7 +1,7 @@
diff -up net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.c.backup_patch_7 net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.c
--- net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.c.backup_patch_7 2007-05-18 20:08:01.000000000 +0200
+++ net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.c 2008-07-25 12:53:28.000000000 +0200
@@ -911,7 +911,7 @@ Get_FSIndex(char *dev)
diff -up net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.c.file_offset net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.c
--- net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.c.file_offset 2004-06-19 15:34:11.000000000 +0200
+++ net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.c 2009-01-22 14:42:26.000000000 +0100
@@ -783,7 +783,7 @@ Get_FSIndex(char *dev)
return 0;
}
@ -10,9 +10,9 @@ diff -up net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.c.backup_patch_7 net-snmp
Get_FSSize(char *dev)
{
struct HRFS_statfs statfs_buf;
diff -up net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.h.backup_patch_7 net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.h
--- net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.h.backup_patch_7 2002-07-04 14:58:04.000000000 +0200
+++ net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.h 2008-07-25 12:53:28.000000000 +0200
diff -up net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.h.file_offset net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.h
--- net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.h.file_offset 2002-07-04 14:56:35.000000000 +0200
+++ net-snmp-5.1.2/agent/mibgroup/host/hr_filesys.h 2009-01-22 14:42:26.000000000 +0100
@@ -12,7 +12,7 @@ extern int Get_Next_HR_FileSys(void
extern int Check_HR_FileSys_NFS(void);
@ -22,27 +22,3 @@ diff -up net-snmp-5.4.1/agent/mibgroup/host/hr_filesys.h.backup_patch_7 net-snmp
#endif /* _MIBGROUP_HRFSYS_H */
diff -up net-snmp-5.4.1/agent/snmp_vars.c.backup_patch_7 net-snmp-5.4.1/agent/snmp_vars.c
--- net-snmp-5.4.1/agent/snmp_vars.c.backup_patch_7 2006-09-15 02:48:50.000000000 +0200
+++ net-snmp-5.4.1/agent/snmp_vars.c 2008-07-25 12:53:28.000000000 +0200
@@ -224,7 +224,7 @@ extern netsnmp_subtree *subtrees;
* int name_len IN - number of sub-ids in the name
*/
-long long_return;
+fsblkcnt_t long_return;
#ifndef ibm032
u_char return_buf[258];
#else
diff -up net-snmp-5.4.1/include/net-snmp/agent/snmp_vars.h.backup_patch_7 net-snmp-5.4.1/include/net-snmp/agent/snmp_vars.h
--- net-snmp-5.4.1/include/net-snmp/agent/snmp_vars.h.backup_patch_7 2005-06-21 23:33:55.000000000 +0200
+++ net-snmp-5.4.1/include/net-snmp/agent/snmp_vars.h 2008-07-25 12:53:28.000000000 +0200
@@ -73,7 +73,7 @@ PERFORMANCE OF THIS SOFTWARE.
struct nlist;
- extern long long_return;
+ extern fsblkcnt_t long_return;
extern u_char return_buf[];
extern oid nullOid[];

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@ -0,0 +1,21 @@
501210: net-snmp SIGFPE 0x00002aaaab37744a in var_hrproc (vp=0x7fffffffbf50)
Author: Jan Safranek <jsafrane@redhat.com>
Upstream as SVN rev. 17616.
Index: net-snmp/agent/mibgroup/host/hr_proc.c
===================================================================
--- net-snmp/agent/mibgroup/host/hr_proc.c (revision 17615)
+++ net-snmp/agent/mibgroup/host/hr_proc.c (working copy)
@@ -182,7 +182,10 @@
return NULL;
long_return = (cpu->idle_ticks - cpu->history[0].idle_hist)*100;
- long_return /= (cpu->total_ticks - cpu->history[0].total_hist);
+ if (cpu->total_ticks > cpu->history[0].total_hist) /* avoid div. by 0 */
+ long_return /= (cpu->total_ticks - cpu->history[0].total_hist);
+ else
+ long_return = 0;
long_return = 100 - long_return;
if (long_return < 0)
long_return = 0;

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@ -8,7 +8,7 @@
Summary: A collection of SNMP protocol tools and libraries
Name: net-snmp
Version: %{major_ver}
Release: 10%{?dist}
Release: 11%{?dist}
Epoch: 1
License: BSD and MIT
@ -35,6 +35,7 @@ Patch10: net-snmp-5.4.1-shared-ip.patch
Patch11: net-snmp-5.4.1-sensors3.patch
Patch12: net-snmp-5.4.1-xen-crash.patch
Patch13: net-snmp-5.4.1-libwrap.patch
Patch14: net-snmp-5.4.2.1-proc-div0.patch
Requires(pre): chkconfig
Requires(post): chkconfig
@ -173,6 +174,7 @@ Net-SNMP toolkit library.
%patch11 -p1 -b .sensors
%patch12 -p1 -b .xen-crash
%patch13 -p1 -b .libwrap
%patch14 -p1 -b .proc-div0
# Do this patch with a perl hack...
perl -pi -e "s|'\\\$install_libdir'|'%{_libdir}'|" ltmain.sh
@ -421,6 +423,9 @@ rm -rf ${RPM_BUILD_ROOT}
%{_datadir}/snmp/mibs
%changelog
* Mon May 18 2009 Jan Safranek <jsafranek@redhat.com> 5.4.2.1-11
- fix divison-by-zero in cpu statistics (#501210)
* Fri Mar 06 2009 Jesse Keating <jkeating@redhat.com> - 5.4.2.1-10
- Rebuild for new rpm