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| author |   Max Kellermann <max.kellermann@ionos.com> | 2024-11-18 23:28:28 +0100 |
|---|---|---|
| committer |   Ilya Dryomov <idryomov@gmail.com> | 2024-12-16 23:25:43 +0100 |
| commit | 550f7ca98ee028a606aa75705a7e77b1bd11720f (patch) | |
| tree | 799a9f9ea0e58110a85832644cf81a6ec023bdba /tools/perf/scripts/python/gecko.py | |
| parent | ceph: fix memory leaks in __ceph_sync_read() (diff) | |
| download | linux-rng-550f7ca98ee028a606aa75705a7e77b1bd11720f.tar.xz linux-rng-550f7ca98ee028a606aa75705a7e77b1bd11720f.zip | |
ceph: give up on paths longer than PATH_MAX
If the full path to be built by ceph_mdsc_build_path() happens to be
longer than PATH_MAX, then this function will enter an endless (retry)
loop, effectively blocking the whole task. Most of the machine
becomes unusable, making this a very simple and effective DoS
vulnerability.
I cannot imagine why this retry was ever implemented, but it seems
rather useless and harmful to me. Let's remove it and fail with
ENAMETOOLONG instead.
Cc: stable@vger.kernel.org
Reported-by: Dario Weißer <dario@cure53.de>
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Reviewed-by: Alex Markuze <amarkuze@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/gecko.py')
0 files changed, 0 insertions, 0 deletions