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| author | Mingzhe Zou <mingzhe.zou@easystack.cn> | 2026-04-03 12:21:35 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-04-03 05:11:08 -0600 |
| commit | 20a8e451ec1c7e99060b1bbaaad03ce88c39ddb8 (patch) | |
| tree | 77449720793ecf3fe3a978aea76250e6ae110ca7 /rust/kernel/interop/git@git.tavy.me:linux-stable.git | |
| parent | fec114a98b8735ee89c75216c45a78e28be0f128 (diff) | |
bcache: fix uninitialized closure object
In the previous patch ("bcache: fix cached_dev.sb_bio use-after-free and
crash"), we adopted a simple modification suggestion from AI to fix the
use-after-free.
But in actual testing, we found an extreme case where the device is
stopped before calling bch_write_bdev_super().
At this point, struct closure sb_write has not been initialized yet.
For this patch, we ensure that sb_bio has been completed via
sb_write_mutex.
Signed-off-by: Mingzhe Zou <mingzhe.zou@easystack.cn>
Signed-off-by: Coly Li <colyli@fnnas.com>
Link: https://patch.msgid.link/20260403042135.2221247-1-colyli@fnnas.com
Fixes: fec114a98b87 ("bcache: fix cached_dev.sb_bio use-after-free and crash")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'rust/kernel/interop/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions