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| author |   Chandan Rajendra <chandan@linux.vnet.ibm.com> | 2016-11-14 21:26:26 -0500 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2016-11-14 21:26:26 -0500 |
| commit | 30a9d7afe70ed6bd9191d3000e2ef1a34fb58493 (patch) | |
| tree | 9c8c589c6c34e4846d06b2967a5392f32a479831 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | ext4: fix mballoc breakage with 64k block size (diff) | |
| download | linux-dev-30a9d7afe70ed6bd9191d3000e2ef1a34fb58493.tar.xz linux-dev-30a9d7afe70ed6bd9191d3000e2ef1a34fb58493.zip | |
ext4: fix stack memory corruption with 64k block size
The number of 'counters' elements needed in 'struct sg' is
super_block->s_blocksize_bits + 2. Presently we have 16 'counters'
elements in the array. This is insufficient for block sizes >= 32k. In
such cases the memcpy operation performed in ext4_mb_seq_groups_show()
would cause stack memory corruption.
Fixes: c9de560ded61f
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions