/usr/share/logwatch/scripts/services/kernel is in logwatch 7.4.1-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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##########################################################################
# $Id: kernel 229 2014-09-09 12:12:49Z stefjakobs $
##########################################################################
# $Log: kernel,v $
# Revision 1.35 2008/03/24 23:31:26 kirk
# added copyright/license notice to each script
#
# Revision 1.34 2008/02/14 19:01:51 mike
# Patch for OOM from Orion Poplawski -mgt
#
# Revision 1.33 2006/01/16 18:40:31 kirk
# fixed name to Logwatch (how I like it now)
#
# Revision 1.32 2005/11/30 05:35:11 bjorn
# Replaced compStr, by Markus Lude.
#
# Revision 1.31 2005/11/08 20:34:49 bjorn
# Fixed reporting of RAID errors and added 'use strict'. Adds support for
# reporting various execution/memory access errors. These are errors on
# 2.6.5-7 kernels, x86_64 and IA64 architectures, SuSE 9 distro.
# All these changes by David Baldwin.
#
# Revision 1.30 2005/07/25 22:17:31 bjorn
# Moved iptables (and ipchains, ipfwadm) code to its own service (iptables).
#
# Revision 1.29 2005/06/07 18:14:50 bjorn
# Filtering out audit statements, since we now have an "audit" service.
##########################################################################
# Kernel script for Logwatch
#
# Visit the Logwatch website at
# http://www.logwatch.org
##########################################################################
#####################################################
## Copyright (c) 2008 Kirk Bauer
## Covered under the included MIT/X-Consortium License:
## http://www.opensource.org/licenses/mit-license.php
## All modifications and contributions by other persons to
## this script are assumed to have been donated to the
## Logwatch project and thus assume the above copyright
## and licensing terms. If you want to make contributions
## under your own copyright or a different license this
## must be explicitly stated in the contribution an the
## Logwatch project reserves the right to not accept such
## contributions. If you have made significant
## contributions to this script and want to claim
## copyright please contact logwatch-devel@lists.sourceforge.net.
#########################################################
use strict;
use Logwatch ':ip';
my $Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'} || 0;
my $Ignore_faults = $ENV{'ignore_faults'};
my $Ignore_rpcsec_expired = $ENV{'ignore_rpcsec_expired'} || 0;
my %SYNflood = ();
my %RAIDErrors = ();
my %DRBDErrors = ();
my %SegFaults = ();
my %GPFaults = ();
my %TrapInt3s = ();
my %UnalignedErrors = ();
my %FPAssists = ();
my %OOM = ();
my %Errors = ();
my %Kernel = ();
my %EDACs = ();
while (defined(my $ThisLine = <STDIN>)) {
chomp($ThisLine);
next if ($ThisLine eq '');
# Remove timestamp if present
$ThisLine =~ s/^\[\s*\d+\.\d+\]\s*//;
if (
# filter out audit messages - these should be parsed by the audit
# service
($ThisLine =~ /^\s*(type=\d+\s+)?audit\(/)
# following now in iptables service
or ($ThisLine =~ /^Packet log: .*PROTO=/)
or ($ThisLine =~ /IN=.*OUT=.*SRC=.*DST=.*PROTO=/)
) { # ignore the above strings
} elsif ( my ($from,$on) = ( $ThisLine =~ /^Warning: possible SYN flood from ([^ ]+) on ([^ ]+):.+ Sending cookies/ ) ) {
my $Fullfrom = LookupIP($from);
my $Fullon = LookupIP($on);
$SYNflood{$Fullon}{$Fullfrom}++;
} elsif ($ThisLine =~ /continuing in degraded mode/) {
$RAIDErrors{$ThisLine}++;
} elsif ($ThisLine =~ /([^(]*)\[\d+\]: segfault at/) {
$SegFaults{$1}++;
} elsif ($ThisLine =~ /([^(]*)\[\d+\] general protection/) {
$GPFaults{$1}++;
} elsif ($ThisLine =~ /([^(]*)\[\d+\] trap int3 /) {
$TrapInt3s{$1}++;
} elsif ($ThisLine =~ /([^(]*)\(\d+\): unaligned access to/) {
$UnalignedErrors{$1}++;
} elsif ($ThisLine =~ /([^(]*)\(\d+\): floating-point assist fault at ip/) {
$FPAssists{$1}++;
} elsif ($ThisLine =~ /Out of memory: (?:Killed|kill) process \d+ \((.*)\)/) {
$OOM{$1}++;
} elsif ($ThisLine =~ /(EDAC (MC|PCI)\d:.*)/) {
# Standard boot messages
next if $ThisLine =~ /Giving out device to /;
$EDACs{$1}++;
} elsif ($ThisLine =~ /(block drbd\d+): Online verify found (\d+) \d+k block out of sync/) {
$DRBDErrors{$1}{"$2 block(s) out of sync"} = 1;
} elsif ($ThisLine =~ /(block drbd\d+): \[.*\] sock_sendmsg time expired/) {
$DRBDErrors{$1}{"sock_sendmsg time expired"}++;
} elsif ($ThisLine =~ /(block drbd\d+): Began resync as (SyncSource|SyncTarget)/) {
$DRBDErrors{$1}{"Began resync as $2"}++;
} elsif ( ( my $errormsg ) = ( $ThisLine =~ /(.*?error.{0,17})/i ) ) {
# filter out smb open/read errors cased by insufficient permissions
my $SkipError = 0;
$SkipError = 1 if $ThisLine =~ /smb_readpage_sync: .*open failed, error=-13/;
$SkipError = 1 if $ThisLine =~ /smb_open: .* open failed, result=-13/;
$SkipError = 1 if $ThisLine =~ /smb_open: .* open failed, error=-13/;
# filter out error_exit in stack traces caused by OOM conditions
$SkipError = 1 if $ThisLine =~ /\[<[\da-f]+>\] error_exit\+0x/;
# These are informative, not errors
$SkipError = 1 if $ThisLine =~ /ACPI _OSC request failed \(AE_ERROR\), returned control mask: 0x1d/;
$SkipError = 1 if $ThisLine =~ /ERST: Error Record Serialization Table \(ERST\) support is initialized/;
$SkipError = 1 if $ThisLine =~ /GHES: Generic hardware error source: \d+ notified via .* is not supported/;
$SkipError = 1 if $ThisLine =~ /PCIe errors handled by (?:BIOS|OS)/;
# These happen when kerberos tickets expire, which can be normal
$SkipError = 1 if $ThisLine =~ /Error: state manager encountered RPCSEC_GSS session expired against NFSv4 server/ && $Ignore_rpcsec_expired;
# filter out mount options
$SkipError = 1 if $ThisLine =~ /errors=(?:continue|remount-ro|panic)/;
$Errors{$errormsg}++ if ( (! $SkipError) || ($Detail > 8));
} elsif ( ( my $errormsg ) = ( $ThisLine =~ /((BUG|WARNING|INFO):.{0,40})/ ) ) {
$Errors{$errormsg}++;
# OTHER
} else {
# XXX For now, going to ignore all other kernel messages as there
# XXX are practically an infinite number and most of them are obviously
# XXX not parsed here at this time.
# filter out smb open/read errors cased by insufficient permissions
my $SkipError = 0;
$SkipError = 1 if $ThisLine =~ /smb_readpage_sync: .*open failed, error=-13/;
$SkipError = 1 if $ThisLine =~ /smb_open: .* open failed, result=-13/;
$SkipError = 1 if $ThisLine =~ /smb_open: .* open failed, error=-13/;
$SkipError = 1 if $ThisLine =~ /block drbd\d+: Out of sync: start=\d+/;
$SkipError = 1 if $ThisLine =~ /block drbd\d+: updated( sync)? UUIDs?/i;
$SkipError = 1 if $ThisLine =~ /block drbd\d+: Resync done/;
$SkipError = 1 if $ThisLine =~ /block drbd\d+: cs:(?:Ahead|Behind) rs_left/;
$SkipError = 1 if $ThisLine =~ /block drbd\d+: \d+ % had equal checksums, eliminated:/;
$Kernel{$ThisLine}++ if ( (! $SkipError) || ($Detail > 8)) ;
}
}
if (keys %SYNflood) {
print "\nWarning: SYN flood on:\n";
foreach my $ThisOne (sort {$a cmp $b} keys %SYNflood) {
print " " . $ThisOne . " from:\n";
foreach my $Next (sort {$a cmp $b} keys %{$SYNflood{$ThisOne}}) {
print " " . $Next . ": $SYNflood{$ThisOne}{$Next} Time(s)\n";
}
}
}
if (keys %RAIDErrors) {
print "\nWARNING: RAID Errors Present\n";
foreach my $Thisone ( sort {$a cmp $b} keys %RAIDErrors ) {
print " $Thisone ...: $RAIDErrors{$Thisone} Time(s)\n";
}
}
if (keys %DRBDErrors) {
print "\nWARNING: DRBD Errors Present\n";
foreach my $Thisone ( sort {$a cmp $b} keys %DRBDErrors ) {
foreach my $Msg (sort {$a cmp $b} keys %{$DRBDErrors{$Thisone}}) {
print " $Thisone: $Msg";
print " : $DRBDErrors{$Thisone}{$Msg} Time(s)" if $DRBDErrors{$Thisone}{$Msg} > 1;
print "\n";
}
}
}
if (keys %SegFaults) {
my $header_printed=0;
foreach my $Thisone ( sort {$a cmp $b} keys %SegFaults ) {
if ($Ignore_faults =~ /\b\Q$Thisone\E\b/i) { next; }
if (!$header_printed) {
print "\nWARNING: Segmentation Faults in these executables\n";
$header_printed=1;
}
print " $Thisone : $SegFaults{$Thisone} Time(s)\n";
}
}
if (keys %GPFaults) {
my $header_printed=0;
foreach my $Thisone ( sort {$a cmp $b} keys %GPFaults ) {
if ($Ignore_faults =~ /\b\Q$Thisone\E\b/i) { next; }
if (!$header_printed) {
print "\nWARNING: General Protection Faults in these executables\n";
$header_printed=1;
}
print " $Thisone : $GPFaults{$Thisone} Time(s)\n";
}
}
if (keys %TrapInt3s) {
my $header_printed=0;
foreach my $Thisone ( sort {$a cmp $b} keys %TrapInt3s ) {
if ($Ignore_faults =~ /\b\Q$Thisone\E\b/i) { next; }
if (!$header_printed) {
print "\nWARNING: Trap int3 in these executables\n";
$header_printed=1;
}
print " $Thisone : $TrapInt3s{$Thisone} Time(s)\n";
}
}
if (keys %UnalignedErrors) {
print "\nWARNING: Unaligned Errors in these executables\n";
foreach my $Thisone ( sort {$a cmp $b} keys %UnalignedErrors ) {
print " $Thisone : $UnalignedErrors{$Thisone} Time(s)\n";
}
}
if (keys %FPAssists) {
print "\nWARNING: Floating-Point Assists in these executables\n";
foreach my $Thisone ( sort {$a cmp $b} keys %FPAssists ) {
print " $Thisone : $FPAssists{$Thisone} Time(s)\n";
}
}
if (keys %OOM) {
print "\nWARNING: Out of memory killer killed these executables\n";
foreach my $Thisone ( sort {$a cmp $b} keys %OOM ) {
print " $Thisone : $OOM{$Thisone} Time(s)\n";
}
}
if (keys %Errors) {
print "\nWARNING: Kernel Errors Present\n";
foreach my $Thisone ( sort {$a cmp $b} keys %Errors ) {
print " $Thisone ...: $Errors{$Thisone} Time(s)\n";
}
}
if (keys %EDACs) {
print "\nWARNING: Kernel EDAC Messages\n";
foreach my $Thisone ( sort {$a cmp $b} keys %EDACs ) {
print " $Thisone ...: $EDACs{$Thisone} Time(s)\n";
}
}
# OTHER
if ( ($Detail >= 5) and (keys %Kernel) ) {
print "\n";
foreach my $ThisOne (sort {$a cmp $b} keys %Kernel) {
print $Kernel{$ThisOne} . " Time(s): " . $ThisOne . "\n";
}
}
exit(0);
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