Thorsten Leemhuis | 4ab5a5d | 2019-01-08 20:40:06 +0100 | [diff] [blame] | 1 | #! /bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0 |
| 3 | # |
| 4 | # Randy Dunlap <rdunlap@infradead.org>, 2018 |
| 5 | # Thorsten Leemhuis <linux@leemhuis.info>, 2018 |
| 6 | |
| 7 | usage() |
| 8 | { |
| 9 | cat <<EOF |
| 10 | usage: ${0##*/} |
| 11 | ${0##*/} <int> |
| 12 | |
| 13 | Call without parameters to decode /proc/sys/kernel/tainted. |
| 14 | |
| 15 | Call with a positive integer as parameter to decode a value you |
| 16 | retrieved from /proc/sys/kernel/tainted on another system. |
| 17 | |
| 18 | EOF |
| 19 | } |
| 20 | |
| 21 | if [ "$1"x != "x" ]; then |
| 22 | if [ "$1"x == "--helpx" ] || [ "$1"x == "-hx" ] ; then |
| 23 | usage |
| 24 | exit 1 |
| 25 | elif [ $1 -ge 0 ] 2>/dev/null ; then |
| 26 | taint=$1 |
| 27 | else |
Masanari Iida | 84de815 | 2021-04-02 16:05:14 +0900 | [diff] [blame] | 28 | echo "Error: Parameter '$1' not a positive integer. Aborting." >&2 |
Thorsten Leemhuis | 4ab5a5d | 2019-01-08 20:40:06 +0100 | [diff] [blame] | 29 | exit 1 |
| 30 | fi |
| 31 | else |
| 32 | TAINTFILE="/proc/sys/kernel/tainted" |
| 33 | if [ ! -r $TAINTFILE ]; then |
| 34 | echo "No file: $TAINTFILE" |
| 35 | exit |
| 36 | fi |
| 37 | |
| 38 | taint=`cat $TAINTFILE` |
| 39 | fi |
| 40 | |
| 41 | if [ $taint -eq 0 ]; then |
| 42 | echo "Kernel not Tainted" |
| 43 | exit |
| 44 | else |
| 45 | echo "Kernel is \"tainted\" for the following reasons:" |
| 46 | fi |
| 47 | |
| 48 | T=$taint |
| 49 | out= |
| 50 | |
| 51 | addout() { |
| 52 | out=$out$1 |
| 53 | } |
| 54 | |
| 55 | if [ `expr $T % 2` -eq 0 ]; then |
| 56 | addout "G" |
| 57 | else |
| 58 | addout "P" |
| 59 | echo " * proprietary module was loaded (#0)" |
| 60 | fi |
| 61 | |
| 62 | T=`expr $T / 2` |
| 63 | if [ `expr $T % 2` -eq 0 ]; then |
| 64 | addout " " |
| 65 | else |
| 66 | addout "F" |
| 67 | echo " * module was force loaded (#1)" |
| 68 | fi |
| 69 | |
| 70 | T=`expr $T / 2` |
| 71 | if [ `expr $T % 2` -eq 0 ]; then |
| 72 | addout " " |
| 73 | else |
| 74 | addout "S" |
Mathieu Chouquet-Stringer | 547f574 | 2020-12-02 16:32:43 +0100 | [diff] [blame] | 75 | echo " * kernel running on an out of specification system (#2)" |
Thorsten Leemhuis | 4ab5a5d | 2019-01-08 20:40:06 +0100 | [diff] [blame] | 76 | fi |
| 77 | |
| 78 | T=`expr $T / 2` |
| 79 | if [ `expr $T % 2` -eq 0 ]; then |
| 80 | addout " " |
| 81 | else |
| 82 | addout "R" |
| 83 | echo " * module was force unloaded (#3)" |
| 84 | fi |
| 85 | |
| 86 | T=`expr $T / 2` |
| 87 | if [ `expr $T % 2` -eq 0 ]; then |
| 88 | addout " " |
| 89 | else |
| 90 | addout "M" |
| 91 | echo " * processor reported a Machine Check Exception (MCE) (#4)" |
| 92 | fi |
| 93 | |
| 94 | T=`expr $T / 2` |
| 95 | if [ `expr $T % 2` -eq 0 ]; then |
| 96 | addout " " |
| 97 | else |
| 98 | addout "B" |
| 99 | echo " * bad page referenced or some unexpected page flags (#5)" |
| 100 | fi |
| 101 | |
| 102 | T=`expr $T / 2` |
| 103 | if [ `expr $T % 2` -eq 0 ]; then |
| 104 | addout " " |
| 105 | else |
| 106 | addout "U" |
| 107 | echo " * taint requested by userspace application (#6)" |
| 108 | fi |
| 109 | |
| 110 | T=`expr $T / 2` |
| 111 | if [ `expr $T % 2` -eq 0 ]; then |
| 112 | addout " " |
| 113 | else |
| 114 | addout "D" |
| 115 | echo " * kernel died recently, i.e. there was an OOPS or BUG (#7)" |
| 116 | fi |
| 117 | |
| 118 | T=`expr $T / 2` |
| 119 | if [ `expr $T % 2` -eq 0 ]; then |
| 120 | addout " " |
| 121 | else |
| 122 | addout "A" |
| 123 | echo " * an ACPI table was overridden by user (#8)" |
| 124 | fi |
| 125 | |
| 126 | T=`expr $T / 2` |
| 127 | if [ `expr $T % 2` -eq 0 ]; then |
| 128 | addout " " |
| 129 | else |
| 130 | addout "W" |
| 131 | echo " * kernel issued warning (#9)" |
| 132 | fi |
| 133 | |
| 134 | T=`expr $T / 2` |
| 135 | if [ `expr $T % 2` -eq 0 ]; then |
| 136 | addout " " |
| 137 | else |
| 138 | addout "C" |
| 139 | echo " * staging driver was loaded (#10)" |
| 140 | fi |
| 141 | |
| 142 | T=`expr $T / 2` |
| 143 | if [ `expr $T % 2` -eq 0 ]; then |
| 144 | addout " " |
| 145 | else |
| 146 | addout "I" |
| 147 | echo " * workaround for bug in platform firmware applied (#11)" |
| 148 | fi |
| 149 | |
| 150 | T=`expr $T / 2` |
| 151 | if [ `expr $T % 2` -eq 0 ]; then |
| 152 | addout " " |
| 153 | else |
| 154 | addout "O" |
| 155 | echo " * externally-built ('out-of-tree') module was loaded (#12)" |
| 156 | fi |
| 157 | |
| 158 | T=`expr $T / 2` |
| 159 | if [ `expr $T % 2` -eq 0 ]; then |
| 160 | addout " " |
| 161 | else |
| 162 | addout "E" |
| 163 | echo " * unsigned module was loaded (#13)" |
| 164 | fi |
| 165 | |
| 166 | T=`expr $T / 2` |
| 167 | if [ `expr $T % 2` -eq 0 ]; then |
| 168 | addout " " |
| 169 | else |
| 170 | addout "L" |
| 171 | echo " * soft lockup occurred (#14)" |
| 172 | fi |
| 173 | |
| 174 | T=`expr $T / 2` |
| 175 | if [ `expr $T % 2` -eq 0 ]; then |
| 176 | addout " " |
| 177 | else |
| 178 | addout "K" |
| 179 | echo " * kernel has been live patched (#15)" |
| 180 | fi |
| 181 | |
| 182 | T=`expr $T / 2` |
| 183 | if [ `expr $T % 2` -eq 0 ]; then |
| 184 | addout " " |
| 185 | else |
| 186 | addout "X" |
| 187 | echo " * auxiliary taint, defined for and used by distros (#16)" |
| 188 | |
| 189 | fi |
Joe Fradley | 2a2dfc8 | 2022-08-23 21:19:33 -0700 | [diff] [blame] | 190 | |
Thorsten Leemhuis | 4ab5a5d | 2019-01-08 20:40:06 +0100 | [diff] [blame] | 191 | T=`expr $T / 2` |
| 192 | if [ `expr $T % 2` -eq 0 ]; then |
| 193 | addout " " |
| 194 | else |
| 195 | addout "T" |
| 196 | echo " * kernel was built with the struct randomization plugin (#17)" |
| 197 | fi |
| 198 | |
Joe Fradley | 2a2dfc8 | 2022-08-23 21:19:33 -0700 | [diff] [blame] | 199 | T=`expr $T / 2` |
| 200 | if [ `expr $T % 2` -eq 0 ]; then |
| 201 | addout " " |
| 202 | else |
| 203 | addout "N" |
| 204 | echo " * an in-kernel test (such as a KUnit test) has been run (#18)" |
| 205 | fi |
| 206 | |
Thorsten Leemhuis | 4ab5a5d | 2019-01-08 20:40:06 +0100 | [diff] [blame] | 207 | echo "For a more detailed explanation of the various taint flags see" |
Colin Ian King | c098564 | 2021-06-13 21:20:59 +0100 | [diff] [blame] | 208 | echo " Documentation/admin-guide/tainted-kernels.rst in the Linux kernel sources" |
Thorsten Leemhuis | 4ab5a5d | 2019-01-08 20:40:06 +0100 | [diff] [blame] | 209 | echo " or https://kernel.org/doc/html/latest/admin-guide/tainted-kernels.html" |
| 210 | echo "Raw taint value as int/string: $taint/'$out'" |
| 211 | #EOF# |