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| author | Ming Lei <ming.lei@redhat.com> | 2024-12-25 19:06:40 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-02 10:34:20 +0100 |
| commit | 7d680f2f76a3417fdfc3946da7471e81464f7b41 (patch) | |
| tree | b1ec11aeaa74eb56dfa95852db5279927e1c8a22 /drivers/android | |
| parent | ccdc8fd86fc7b34630bc1ce2da26537219f8b473 (diff) | |
| download | linux-7d680f2f76a3417fdfc3946da7471e81464f7b41.tar.gz linux-7d680f2f76a3417fdfc3946da7471e81464f7b41.tar.bz2 linux-7d680f2f76a3417fdfc3946da7471e81464f7b41.zip | |
ublk: detach gendisk from ublk device if add_disk() fails
[ Upstream commit 75cd4005da5492129917a4a4ee45e81660556104 ]
Inside ublk_abort_requests(), gendisk is grabbed for aborting all
inflight requests. And ublk_abort_requests() is called when exiting
the uring context or handling timeout.
If add_disk() fails, the gendisk may have been freed when calling
ublk_abort_requests(), so use-after-free can be caused when getting
disk's reference in ublk_abort_requests().
Fixes the bug by detaching gendisk from ublk device if add_disk() fails.
Fixes: bd23f6c2c2d0 ("ublk: quiesce request queue when aborting queue")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20241225110640.351531-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/android')
0 files changed, 0 insertions, 0 deletions