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| author | Yu Kuai <[email protected]> | 2023-01-30 01:41:36 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2023-01-30 01:57:01 +0000 |
| commit | b600de2d7d3a16f9007fad1bdae82a3951a26af2 (patch) | |
| tree | 4a676a3d482d0f4e89c2468d341b28895d62d26e /tools/perf/scripts/python/check-perf-trace.py | |
| parent | Merge tag 'nvme-6.2-2023-01-26' of git://git.infradead.org/nvme into block-6.2 (diff) | |
| download | kernel-b600de2d7d3a16f9007fad1bdae82a3951a26af2.tar.gz kernel-b600de2d7d3a16f9007fad1bdae82a3951a26af2.zip | |
block, bfq: fix uaf for bfqq in bic_set_bfqq()
After commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'"),
bic->bfqq will be accessed in bic_set_bfqq(), however, in some context
bic->bfqq will be freed, and bic_set_bfqq() is called with the freed
bic->bfqq.
Fix the problem by always freeing bfqq after bic_set_bfqq().
Fixes: 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'")
Reported-and-tested-by: Shinichiro Kawasaki <[email protected]>
Signed-off-by: Yu Kuai <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions