diff options
| author | Cheng Xu <chengyou@linux.alibaba.com> | 2026-07-30 20:43:54 +0800 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2026-08-05 11:00:28 -0400 |
| commit | a52eeff32024f190b3bdc99088c7becccd4fa60b (patch) | |
| tree | 300aae8d7beb5cc96113fa898b1165bda1fd0e25 /tools/perf/scripts/python/syscall-counts.py | |
| parent | 98df2aee1459ee1c62c70cbe9b370d2a532aea36 (diff) | |
RDMA/erdma: Hold QP references for AE and CM processing
AE QP fatal events and iWARP CM paths load QPs from dev->qp_xa
and then use or reference them outside the xarray lock.
erdma_destroy_qp() can drop the destroy-path reference and free QP
resources while such a lookup is in flight.
Add erdma_qp_get_by_qpn() to acquire a kref under the xarray
lock with kref_get_unless_zero(). Remove the QP from the xarray
before dropping the destroy-path reference so no new lookup can acquire
it while destruction waits for existing users.
Fixes: 155055771704 ("RDMA/erdma: Add verbs implementation")
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Link: https://patch.msgid.link/20260730124357.12976-2-chengyou@linux.alibaba.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions