netdev - Re: [PATCH v2] net: ntb_netdev: Move ntb_netdev_rx_handler() to call netif_rx() from __netif

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Date: Wed, 03 Jul 2024 02:00:34 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Dave Jiang <dave.jiang@...el.com>
Cc: ntb@...ts.linux.dev, netdev@...r.kernel.org, jdmason@...zu.us,
 allenbh@...il.com, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 abeni@...hat.com, jerry.dai@...el.com
Subject: Re: [PATCH v2] net: ntb_netdev: Move ntb_netdev_rx_handler() to call
 netif_rx() from __netif_rx()

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Mon,  1 Jul 2024 11:15:38 -0700 you wrote:
> The following is emitted when using idxd (DSA) dmanegine as the data
> mover for ntb_transport that ntb_netdev uses.
> 
> [74412.546922] BUG: using smp_processor_id() in preemptible [00000000] code: irq/52-idxd-por/14526
> [74412.556784] caller is netif_rx_internal+0x42/0x130
> [74412.562282] CPU: 6 PID: 14526 Comm: irq/52-idxd-por Not tainted 6.9.5 #5
> [74412.569870] Hardware name: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.E9I.1752.P05.2402080856 02/08/2024
> [74412.581699] Call Trace:
> [74412.584514]  <TASK>
> [74412.586933]  dump_stack_lvl+0x55/0x70
> [74412.591129]  check_preemption_disabled+0xc8/0xf0
> [74412.596374]  netif_rx_internal+0x42/0x130
> [74412.600957]  __netif_rx+0x20/0xd0
> [74412.604743]  ntb_netdev_rx_handler+0x66/0x150 [ntb_netdev]
> [74412.610985]  ntb_complete_rxc+0xed/0x140 [ntb_transport]
> [74412.617010]  ntb_rx_copy_callback+0x53/0x80 [ntb_transport]
> [74412.623332]  idxd_dma_complete_txd+0xe3/0x160 [idxd]
> [74412.628963]  idxd_wq_thread+0x1a6/0x2b0 [idxd]
> [74412.634046]  irq_thread_fn+0x21/0x60
> [74412.638134]  ? irq_thread+0xa8/0x290
> [74412.642218]  irq_thread+0x1a0/0x290
> [74412.646212]  ? __pfx_irq_thread_fn+0x10/0x10
> [74412.651071]  ? __pfx_irq_thread_dtor+0x10/0x10
> [74412.656117]  ? __pfx_irq_thread+0x10/0x10
> [74412.660686]  kthread+0x100/0x130
> [74412.664384]  ? __pfx_kthread+0x10/0x10
> [74412.668639]  ret_from_fork+0x31/0x50
> [74412.672716]  ? __pfx_kthread+0x10/0x10
> [74412.676978]  ret_from_fork_asm+0x1a/0x30
> [74412.681457]  </TASK>
> 
> [...]

Here is the summary with links:
  - [v2] net: ntb_netdev: Move ntb_netdev_rx_handler() to call netif_rx() from __netif_rx()
    https://git.kernel.org/netdev/net/c/e15a5d821e51

You are awesome, thank you!
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