linux-ext4 - [PATCH 1/2] tests: dumpe2fs against an image with bad os

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Message-Id: <20170718192919.32406-2-abuchbinder@google.com>
Date:   Tue, 18 Jul 2017 12:29:18 -0700
From:   Adam Buchbinder <abuchbinder@...gle.com>
To:     linux-ext4@...r.kernel.org
Cc:     Adam Buchbinder <abuchbinder@...gle.com>
Subject: [PATCH 1/2] tests: dumpe2fs against an image with bad os_type.

The os_type here is large enough to be negative when interpreted as a
signed integer.

This test case was generated by american fuzzy lop, starting from a
base filesystem image from files.fuzzing-project.org.

Signed-off-by: Adam Buchbinder <abuchbinder@...gle.com>
---
 tests/d_bad_ostype/expect   |   1 +
 tests/d_bad_ostype/image.gz | Bin 0 -> 272 bytes
 tests/d_bad_ostype/name     |   1 +
 tests/d_bad_ostype/script   |  19 +++++++++++++++++++
 4 files changed, 21 insertions(+)
 create mode 100644 tests/d_bad_ostype/expect
 create mode 100644 tests/d_bad_ostype/image.gz
 create mode 100644 tests/d_bad_ostype/name
 create mode 100644 tests/d_bad_ostype/script

diff --git a/tests/d_bad_ostype/expect b/tests/d_bad_ostype/expect
new file mode 100644
index 00000000..b00318c4
--- /dev/null
+++ b/tests/d_bad_ostype/expect
@@ -0,0 +1 @@
+Filesystem OS type:       (unknown os)
diff --git a/tests/d_bad_ostype/image.gz b/tests/d_bad_ostype/image.gz
new file mode 100644
index 0000000000000000000000000000000000000000..06805e1093c1ce9d2dc172aa89fb57eaedfa5505
GIT binary patch
literal 272
zcmV+r0q_1FiwFpQOm0~K18HqxXJr6mU>F6XU=)m0AOOS;K+Fup8bHhh#Ei%a6d)L+
z?&+16q1uYMkqiv~{|CQk1gnGa!Jq-Aj~m1RVhgBwAhY*~Zq>5lb9}siN7?zgx^kZA
z?$FQ8E731WEiR$5|B%5FZu@...o#cl{h8X~OW!;Lxt9kjw+`qxTG+{mLtK~^mW_f@
zKq3I;O%@<#WdP-WCLo_>fL$~SM!_hc7x@...z-?#9|fae6pTDzKhO>s1*2dT3>1L1
z13>-wb@2W@...sC25<-DIneI+Pz;e_0goMk0ElL%r=v!}hye|aK*E591(fz-7$U<6
WPk-bB5lS6L2LJ#sc=EFV7ytl<z;*Tj

literal 0
HcmV?d00001

diff --git a/tests/d_bad_ostype/name b/tests/d_bad_ostype/name
new file mode 100644
index 00000000..3da887a8
--- /dev/null
+++ b/tests/d_bad_ostype/name
@@ -0,0 +1 @@
+handle bad (negative) os_type
diff --git a/tests/d_bad_ostype/script b/tests/d_bad_ostype/script
new file mode 100644
index 00000000..94f356a6
--- /dev/null
+++ b/tests/d_bad_ostype/script
@@ -0,0 +1,19 @@
+gzip -dc < $test_dir/image.gz > $TMPFILE
+
+OUT=$test_name.log
+EXP=$test_dir/expect
+$DUMPE2FS $TMPFILE 2>&1 | sed -f $cmd_dir/filter.sed | grep 'Filesystem OS type:' > $OUT
+
+rm -f $TMPFILE
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+        echo "$test_name: $test_description: ok"
+        touch $test_name.ok
+else
+        echo "$test_name: $test_description: failed"
+        diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+        rm -f $test_name.tmp
+fi
+unset OUT EXP
-- 
2.14.0.rc0.284.gd933b75aa4-goog