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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-10-02 01:21:48 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-10-18 17:37:13 +0300 |
| commit | af8c53c8bc087459b1aadd4c94805d8272358d79 (patch) | |
| tree | fc3cf9709f023badf83b48cf536dab748d749dc2 /fs/ext4/extents.c | |
| parent | addd752cff27774258f593c68d283725398689c4 (diff) | |
| download | linux-af8c53c8bc087459b1aadd4c94805d8272358d79.tar.xz | |
ext4: limit entries returned when counting fsmap records
If userspace asked fsmap to try to count the number of entries, we cannot
return more than UINT_MAX entries because fmh_entries is u32.
Therefore, stop counting if we hit this limit or else we will waste time
to return truncated results.
Fixes: 0c9ec4beecac ("ext4: support GETFSMAP ioctls")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Link: https://lore.kernel.org/r/20201001222148.GA49520@magnolia
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/extents.c')
0 files changed, 0 insertions, 0 deletions