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| author | David Sterba <dsterba@suse.com> | 2024-02-07 00:47:13 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2024-03-04 18:24:51 +0300 |
| commit | 3c6ee34c6f9cd12802326da26631232a61743501 (patch) | |
| tree | ffeadcb64cc581d13e46b5ed470caddf7a59c979 /fs/btrfs/send.c | |
| parent | 5d2288711ccc483feca73151c46ee835bda17839 (diff) | |
| download | linux-3c6ee34c6f9cd12802326da26631232a61743501.tar.xz | |
btrfs: send: handle path ref underflow in header iterate_inode_ref()
Change BUG_ON to proper error handling if building the path buffer
fails. The pointers are not printed so we don't accidentally leak kernel
addresses.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/send.c')
| -rw-r--r-- | fs/btrfs/send.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 3b3f38a76b00..5b7ec4f99aad 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -1074,7 +1074,15 @@ static int iterate_inode_ref(struct btrfs_root *root, struct btrfs_path *path, ret = PTR_ERR(start); goto out; } - BUG_ON(start < p->buf); + if (unlikely(start < p->buf)) { + btrfs_err(root->fs_info, + "send: path ref buffer underflow for key (%llu %u %llu)", + found_key->objectid, + found_key->type, + found_key->offset); + ret = -EINVAL; + goto out; + } } p->start = start; } else { |