diff options
| author | Chris Mason <mason@kernel.org> | 2026-10-28 10:41:43 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-10-29 07:23:20 -0600 |
| commit | 08ebf69c78a02afb39b7728f3358c09bc4cf067d (patch) | |
| tree | 5b6deadc6cc4a6f765899b0a1d78f461d5ad6c5a /tools/lib/python | |
| parent | 4912dab88baa5f7034dc9e38807804d470ae5438 (diff) | |
rnbd-srv: publish the sess_dev at the end of OPEN
rnbd_sess_dev_alloc() stores the empty sess_dev in the XArray as its
first step. An IO message with the new ID from another connection can
find it before bdev_file is set, or hold a reference while a failing
OPEN frees it after a mere RCU grace period. Both are reachable from any
host that can open a device.
Reserve the ID with a NULL entry and store the sess_dev once nothing can
fail anymore. The error path still erases the ID, and no longer needs
synchronize_rcu().
Fixes: 2de6c8de192b ("block/rnbd: server: main functionality")
Cc: "Md. Haris Iqbal" <haris.iqbal@ionos.com>
Cc: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Chris Mason <mason@kernel.org>
Link: https://patch.msgid.link/20261028164415.1262013-41-axboe@kernel.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions