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| author |   Zijun Hu <quic_zijuhu@quicinc.com> | 2025-01-05 16:34:03 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-10 15:26:12 +0100 |
| commit | d1248436cbef1f924c04255367ff4845ccd9025e (patch) | |
| tree | 3093adb931376a03307d19d915d6428c02eeec85 /drivers/base/core.c | |
| parent | driver core: class: Fix wild pointer dereferences in API class_dev_iter_next() (diff) | |
| download | wireguard-linux-d1248436cbef1f924c04255367ff4845ccd9025e.tar.xz wireguard-linux-d1248436cbef1f924c04255367ff4845ccd9025e.zip | |
blk-cgroup: Fix class @block_class's subsystem refcount leakage
blkcg_fill_root_iostats() iterates over @block_class's devices by
class_dev_iter_(init|next)(), but does not end iterating with
class_dev_iter_exit(), so causes the class's subsystem refcount leakage.
Fix by ending the iterating with class_dev_iter_exit().
Fixes: ef45fe470e1e ("blk-cgroup: show global disk stats in root cgroup io.stat")
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20250105-class_fix-v6-2-3a2f1768d4d4@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/core.c')
0 files changed, 0 insertions, 0 deletions