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| author |   Jia-Ju Bai <baijiaju1990@gmail.com> | 2019-07-30 11:28:20 -0700 |
|---|---|---|
| committer |   Darrick J. Wong <darrick.wong@oracle.com> | 2019-07-30 11:28:20 -0700 |
| commit | afa1d96d1430c2138c545fb76e6dcb21222098d4 (patch) | |
| tree | dd6f7213cff728deae942e9fc7a46d9bfd0d35b5 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | xfs: fix stack contents leakage in the v1 inumber ioctls (diff) | |
| download | wireguard-linux-afa1d96d1430c2138c545fb76e6dcb21222098d4.tar.xz wireguard-linux-afa1d96d1430c2138c545fb76e6dcb21222098d4.zip | |
xfs: Fix possible null-pointer dereferences in xchk_da_btree_block_check_sibling()
In xchk_da_btree_block_check_sibling(), there is an if statement on
line 274 to check whether ds->state->altpath.blk[level].bp is NULL:
if (ds->state->altpath.blk[level].bp)
When ds->state->altpath.blk[level].bp is NULL, it is used on line 281:
xfs_trans_brelse(..., ds->state->altpath.blk[level].bp);
struct xfs_buf_log_item *bip = bp->b_log_item;
ASSERT(bp->b_transp == tp);
Thus, possible null-pointer dereferences may occur.
To fix these bugs, ds->state->altpath.blk[level].bp is checked before
being used.
These bugs are found by a static analysis tool STCheck written by us.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions