debugfs: fix logdump on file systems with block sizes > 8192

Addresses-Coverity-Bug: 1472879
Addresses-Coverity-Bug: 1472880
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/debugfs/logdump.c b/debugfs/logdump.c
index 5d3f3d9..6826b25 100644 (file)
--- a/debugfs/logdump.c
+++ b/debugfs/logdump.c
@@ -350,7 +350,7 @@ static void dump_journal(char *cmdname, FILE *out_file,
 {
        struct ext2_super_block *sb;
        char                    jsb_buffer[1024];
-       char                    buf[8192];
+       char                    buf[EXT2_MAX_BLOCK_SIZE];
        journal_superblock_t    *jsb;
        unsigned int            blocksize = 1024;
        int                     retval;
@@ -409,7 +409,7 @@ static void dump_journal(char *cmdname, FILE *out_file,
        blocksize = be32_to_cpu(jsb->s_blocksize);
        if ((current_fs && (blocksize != current_fs->blocksize)) ||
            (!current_fs && (!blocksize || (blocksize & (blocksize - 1)) ||
-                            (blocksize > 65536)))) {
+                            (blocksize > EXT2_MAX_BLOCK_SIZE)))) {
                fprintf(out_file,
                        "Journal block size invalid: %u (%u)\n",
                        be32_to_cpu(jsb->s_blocksize), blocksize);