On Wed, Aug 24, 2022 at 10:43:59AM -0500, Shiraz Saleem wrote:
> SW generated completions for outstanding WRs posted on SQ
> after QP is in error target the wrong CQ. This causes the
> ib_drain_sq to hang with no completion.
>
> Fix this to generate completions on the right CQ.
>
> [ 863.969340] INFO: task kworker/u52:2:671 blocked for more than 122 seconds.
> [ 863.979224] Not tainted 5.14.0-130.el9.x86_64 #1
> [ 863.986588] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> [ 863.996997] task:kworker/u52:2 state:D stack: 0 pid: 671 ppid: 2 flags:0x00004000
> [ 864.007272] Workqueue: xprtiod xprt_autoclose [sunrpc]
> [ 864.014056] Call Trace:
> [ 864.017575] __schedule+0x206/0x580
> [ 864.022296] schedule+0x43/0xa0
> [ 864.026736] schedule_timeout+0x115/0x150
> [ 864.032185] __wait_for_common+0x93/0x1d0
> [ 864.037717] ? usleep_range_state+0x90/0x90
> [ 864.043368] __ib_drain_sq+0xf6/0x170 [ib_core]
> [ 864.049371] ? __rdma_block_iter_next+0x80/0x80 [ib_core]
> [ 864.056240] ib_drain_sq+0x66/0x70 [ib_core]
> [ 864.062003] rpcrdma_xprt_disconnect+0x82/0x3b0 [rpcrdma]
> [ 864.069365] ? xprt_prepare_transmit+0x5d/0xc0 [sunrpc]
> [ 864.076386] xprt_rdma_close+0xe/0x30 [rpcrdma]
> [ 864.082593] xprt_autoclose+0x52/0x100 [sunrpc]
> [ 864.088718] process_one_work+0x1e8/0x3c0
> [ 864.094170] worker_thread+0x50/0x3b0
> [ 864.099109] ? rescuer_thread+0x370/0x370
> [ 864.104473] kthread+0x149/0x170
> [ 864.109022] ? set_kthread_struct+0x40/0x40
> [ 864.114713] ret_from_fork+0x22/0x30
>
> Fixes: 81091d7696ae ("RDMA/irdma: Add SW mechanism to generate completions on error")
> Reported-by: Kamal Heib <kamalheib1@xxxxxxxxx>
> Signed-off-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
> ---
> drivers/infiniband/hw/irdma/utils.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
Thanks, applied.
