diff options
| author | Tony Dinh <[email protected]> | 2025-06-02 21:50:22 -0700 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-06-25 13:41:35 -0600 |
| commit | 29cb98d515f96c2330455af4b8cace0220abd00c (patch) | |
| tree | 9221b73eaf2f278e9b18c5acfd966f60c831c35c | |
| parent | b40d7b8f72f181d539b03c807d2dcaf864af552e (diff) | |
fs: ext4fs: Fix: Data abort in ext4fs_log_gdt()
Return ENOMEM in ext4fs_log_gdt when number of blocks per gdt is more than
number of allocated journal entries.
Signed-off-by: Tony Dinh <[email protected]>
| -rw-r--r-- | fs/ext4/ext4_journal.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/ext4_journal.c b/fs/ext4/ext4_journal.c index 02c4ac2cb93..868a2c1804a 100644 --- a/fs/ext4/ext4_journal.c +++ b/fs/ext4/ext4_journal.c @@ -131,6 +131,13 @@ int ext4fs_log_gdt(char *gd_table) struct ext_filesystem *fs = get_fs(); short i; long int var = fs->gdtable_blkno; + + /* Make sure there is enough journal entries */ + if (fs->no_blk_pergdt > MAX_JOURNAL_ENTRIES) { + log_err("*** Not enough journal entries allocated\n"); + return -ENOMEM; + } + for (i = 0; i < fs->no_blk_pergdt; i++) { journal_ptr[gindex]->buf = zalloc(fs->blksz); if (!journal_ptr[gindex]->buf) |