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D51037.id.diff
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diff --git a/usr.sbin/makefs/ffs.c b/usr.sbin/makefs/ffs.c
--- a/usr.sbin/makefs/ffs.c
+++ b/usr.sbin/makefs/ffs.c
@@ -1056,7 +1056,7 @@
reclen = DIRSIZ_SWAP(0, &de, needswap);
de.d_reclen = ufs_rw16(reclen, needswap);
- dp = (struct direct *)(dbuf->buf + dbuf->cur);
+ dp = dbuf->buf == NULL ? NULL : (struct direct *)(dbuf->buf + dbuf->cur);
llen = 0;
if (dp != NULL)
llen = DIRSIZ_SWAP(0, dp, needswap);
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D51037.id.diff (421 B)
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D51037: makefs: Fix undefined behaviour in ffs.c
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