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kernel-chktaint: add reporting for tainted modules

Check all loaded modules and report any that have their 'taint' flags set. The tainted module output format is: * <module_name> (<taint_flags>) Example output: Kernel is "tainted" for the following reasons: * externally-built ('out-of-tree') module was loaded (#12) * unsigned module was loaded (#13) Raw taint value as int/string: 12288/'G OE ' Tainted modules: * dump_test (OE)

Randy Dunlap committed 10 months ago

Commit 08e8f1e1 parent 89802ca1 file · +17 −1Browse files

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tools/debugging/kernel-chktaint+17−1
@@ -211,9 +211,25 @@ else · 210 unmodified lines
211211 addout "J"
212212 echo " * fwctl's mutating debug interface was used (#19)"
213213 fi
214+echo "Raw taint value as int/string: $taint/'$out'"
215+
216+# report on any tainted loadable modules
217+[ "$1" = "" ] && [ -r /sys/module/ ] && \
218+ cnt=`grep [A-Z] /sys/module/*/taint | wc -l` || cnt=0
214219
220+if [ $cnt -ne 0 ]; then
221+ echo
222+ echo "Tainted modules:"
223+ for dir in `ls /sys/module` ; do
224+ if [ -r /sys/module/$dir/taint ]; then
225+ modtnt=`cat /sys/module/$dir/taint`
226+ [ "$modtnt" = "" ] || echo " * $dir ($modtnt)"
227+ fi
228+ done
229+fi
230+
231+echo
215232 echo "For a more detailed explanation of the various taint flags see"
216233 echo " Documentation/admin-guide/tainted-kernels.rst in the Linux kernel sources"
217234 echo " or https://kernel.org/doc/html/latest/admin-guide/tainted-kernels.html"
218−echo "Raw taint value as int/string: $taint/'$out'"
219235 #EOF#