e2fsck: on read error, don't rewrite blocks past the end of the fs

[tools/e2fsprogs.git] / misc / e2fuzz.sh

diff --git a/misc/e2fuzz.sh b/misc/e2fuzz.sh
index 4cb7b61..d8d9a82 100755 (executable)
--- a/misc/e2fuzz.sh
+++ b/misc/e2fuzz.sh
@@ -219,6 +219,7 @@ seq 1 "${PASSES}" | while read pass; do
        fi
        if [ "${RUN_FSCK}" -gt 0 ]; then
                cp "${PASS_IMG}" "${FSCK_IMG}"
+               pass_img_sz="$(stat -c '%s' "${PASS_IMG}")"
 
                seq 1 "${MAX_FSCK}" | while read fsck_pass; do
                        echo "++ fsck pass ${fsck_pass}: $(which e2fsck) -fy ${FSCK_IMG} ${EXTENDED_FSCK_OPTS}"
@@ -250,6 +251,12 @@ seq 1 "${PASSES}" | while read pass; do
                                        exit 2
                                fi
                        fi
+
+                       fsck_img_sz="$(stat -c '%s' "${FSCK_IMG}")"
+                       if [ "${fsck_img_sz}" -ne "${pass_img_sz}" ]; then
+                               echo "++ fsck image size changed"
+                               exit 3
+                       fi
                done
                fsck_loop_ret=$?
                if [ "${fsck_loop_ret}" -gt 0 ]; then