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| author | Cheng Xu <chengyou@linux.alibaba.com> | 2022-07-14 04:30:47 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leonro@nvidia.com> | 2022-07-18 14:20:52 +0300 |
| commit | 3056fc6c32e613b760422b94c7617ac9a24a4721 (patch) | |
| tree | db6335cf38a7841a8cc275f87a46807b832280fc /tools/perf/scripts/python/stackcollapse.py | |
| parent | 2de949abd6a539fac4b2c89a560e4ae505b6fb52 (diff) | |
| download | linux-3056fc6c32e613b760422b94c7617ac9a24a4721.tar.xz | |
RDMA/siw: Fix duplicated reported IW_CM_EVENT_CONNECT_REPLY event
If siw_recv_mpa_rr returns -EAGAIN, it means that the MPA reply hasn't
been received completely, and should not report IW_CM_EVENT_CONNECT_REPLY
in this case. This may trigger a call trace in iw_cm. A simple way to
trigger this:
server: ib_send_lat
client: ib_send_lat -R <server_ip>
The call trace looks like this:
kernel BUG at drivers/infiniband/core/iwcm.c:894!
invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
<...>
Workqueue: iw_cm_wq cm_work_handler [iw_cm]
Call Trace:
<TASK>
cm_work_handler+0x1dd/0x370 [iw_cm]
process_one_work+0x1e2/0x3b0
worker_thread+0x49/0x2e0
? rescuer_thread+0x370/0x370
kthread+0xe5/0x110
? kthread_complete_and_exit+0x20/0x20
ret_from_fork+0x1f/0x30
</TASK>
Fixes: 6c52fdc244b5 ("rdma/siw: connection management")
Link: https://lore.kernel.org/r/dae34b5fd5c2ea2bd9744812c1d2653a34a94c67.1657706960.git.chengyou@linux.alibaba.com
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions