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M701: add is_reboot_charging function, avoid to charging display error.
[firefly-linux-kernel-4.4.55.git]
/
fs
/
jbd2
/
journal.c
diff --git
a/fs/jbd2/journal.c
b/fs/jbd2/journal.c
index 0dfa5b598e68fa3f358f043c442eb39558bf6f52..40c5fb73e9c696cbede4bbb5b6a66c372bf3d125 100644
(file)
--- a/
fs/jbd2/journal.c
+++ b/
fs/jbd2/journal.c
@@
-1251,6
+1251,14
@@
static int journal_get_superblock(journal_t *journal)
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;
+ }
+
return 0;
out: