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-rw-r--r--fs/jbd2/journal.c44
1 files changed, 26 insertions, 18 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f24df13adc4..0fa0123151d 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -491,7 +491,7 @@ int __jbd2_log_start_commit(journal_t *journal, tid_t target)
*/
journal->j_commit_request = target;
- jbd_debug(1, "JBD: requesting commit %d/%d\n",
+ jbd_debug(1, "JBD2: requesting commit %d/%d\n",
journal->j_commit_request,
journal->j_commit_sequence);
wake_up(&journal->j_wait_commit);
@@ -500,7 +500,7 @@ int __jbd2_log_start_commit(journal_t *journal, tid_t target)
/* This should never happen, but if it does, preserve
the evidence before kjournald goes into a loop and
increments j_commit_sequence beyond all recognition. */
- WARN_ONCE(1, "jbd: bad log_start_commit: %u %u %u %u\n",
+ WARN_ONCE(1, "JBD2: bad log_start_commit: %u %u %u %u\n",
journal->j_commit_request,
journal->j_commit_sequence,
target, journal->j_running_transaction ?
@@ -645,7 +645,7 @@ int jbd2_log_wait_commit(journal_t *journal, tid_t tid)
}
#endif
while (tid_gt(tid, journal->j_commit_sequence)) {
- jbd_debug(1, "JBD: want %d, j_commit_sequence=%d\n",
+ jbd_debug(1, "JBD2: want %d, j_commit_sequence=%d\n",
tid, journal->j_commit_sequence);
wake_up(&journal->j_wait_commit);
read_unlock(&journal->j_state_lock);
@@ -1093,7 +1093,7 @@ static int journal_reset(journal_t *journal)
first = be32_to_cpu(sb->s_first);
last = be32_to_cpu(sb->s_maxlen);
if (first + JBD2_MIN_JOURNAL_BLOCKS > last + 1) {
- printk(KERN_ERR "JBD: Journal too short (blocks %llu-%llu).\n",
+ printk(KERN_ERR "JBD2: Journal too short (blocks %llu-%llu).\n",
first, last);
journal_fail_superblock(journal);
return -EINVAL;
@@ -1139,7 +1139,7 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait)
*/
if (sb->s_start == 0 && journal->j_tail_sequence ==
journal->j_transaction_sequence) {
- jbd_debug(1,"JBD: Skipping superblock update on recovered sb "
+ jbd_debug(1, "JBD2: Skipping superblock update on recovered sb "
"(start %ld, seq %d, errno %d)\n",
journal->j_tail, journal->j_tail_sequence,
journal->j_errno);
@@ -1163,7 +1163,7 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait)
}
read_lock(&journal->j_state_lock);
- jbd_debug(1,"JBD: updating superblock (start %ld, seq %d, errno %d)\n",
+ jbd_debug(1, "JBD2: updating superblock (start %ld, seq %d, errno %d)\n",
journal->j_tail, journal->j_tail_sequence, journal->j_errno);
sb->s_sequence = cpu_to_be32(journal->j_tail_sequence);
@@ -1216,8 +1216,8 @@ static int journal_get_superblock(journal_t *journal)
ll_rw_block(READ, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
- printk (KERN_ERR
- "JBD: IO error reading journal superblock\n");
+ printk(KERN_ERR
+ "JBD2: IO error reading journal superblock\n");
goto out;
}
}
@@ -1228,7 +1228,7 @@ static int journal_get_superblock(journal_t *journal)
if (sb->s_header.h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER) ||
sb->s_blocksize != cpu_to_be32(journal->j_blocksize)) {
- printk(KERN_WARNING "JBD: no valid journal superblock found\n");
+ printk(KERN_WARNING "JBD2: no valid journal superblock found\n");
goto out;
}
@@ -1240,14 +1240,22 @@ static int journal_get_superblock(journal_t *journal)
journal->j_format_version = 2;
break;
default:
- printk(KERN_WARNING "JBD: unrecognised superblock format ID\n");
+ printk(KERN_WARNING "JBD2: unrecognised superblock format ID\n");
goto out;
}
if (be32_to_cpu(sb->s_maxlen) < journal->j_maxlen)
journal->j_maxlen = be32_to_cpu(sb->s_maxlen);
else if (be32_to_cpu(sb->s_maxlen) > journal->j_maxlen) {
- printk (KERN_WARNING "JBD: journal file too short\n");
+ printk(KERN_WARNING "JBD2: journal file too short\n");
+ goto out;
+ }
+
+ if (be32_to_cpu(sb->s_first) == 0 ||
+ be32_to_cpu(sb->s_first) >= journal->j_maxlen) {
+ printk(KERN_WARNING
+ "JBD2: Invalid start block of journal: %u\n",
+ be32_to_cpu(sb->s_first));
goto out;
}
@@ -1310,8 +1318,8 @@ int jbd2_journal_load(journal_t *journal)
~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) ||
(sb->s_feature_incompat &
~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) {
- printk (KERN_WARNING
- "JBD: Unrecognised features on journal\n");
+ printk(KERN_WARNING
+ "JBD2: Unrecognised features on journal\n");
return -EINVAL;
}
}
@@ -1346,7 +1354,7 @@ int jbd2_journal_load(journal_t *journal)
return 0;
recovery_error:
- printk (KERN_WARNING "JBD: recovery failed\n");
+ printk(KERN_WARNING "JBD2: recovery failed\n");
return -EIO;
}
@@ -1577,7 +1585,7 @@ static int journal_convert_superblock_v1(journal_t *journal,
struct buffer_head *bh;
printk(KERN_WARNING
- "JBD: Converting superblock from version 1 to 2.\n");
+ "JBD2: Converting superblock from version 1 to 2.\n");
/* Pre-initialise new fields to zero */
offset = ((char *) &(sb->s_feature_compat)) - ((char *) sb);
@@ -1694,7 +1702,7 @@ int jbd2_journal_wipe(journal_t *journal, int write)
if (!journal->j_tail)
goto no_recovery;
- printk (KERN_WARNING "JBD: %s recovery information on journal\n",
+ printk(KERN_WARNING "JBD2: %s recovery information on journal\n",
write ? "Clearing" : "Ignoring");
err = jbd2_journal_skip_recovery(journal);
@@ -2020,7 +2028,7 @@ static int journal_init_jbd2_journal_head_cache(void)
retval = 0;
if (!jbd2_journal_head_cache) {
retval = -ENOMEM;
- printk(KERN_EMERG "JBD: no memory for journal_head cache\n");
+ printk(KERN_EMERG "JBD2: no memory for journal_head cache\n");
}
return retval;
}
@@ -2383,7 +2391,7 @@ static void __exit journal_exit(void)
#ifdef CONFIG_JBD2_DEBUG
int n = atomic_read(&nr_journal_heads);
if (n)
- printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n);
+ printk(KERN_EMERG "JBD2: leaked %d journal_heads!\n", n);
#endif
jbd2_remove_debugfs_entry();
jbd2_remove_jbd_stats_proc_entry();
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-12 02:54:49 +0000