Subject: Re: [PATCH net] net: macb: Use dev_consume_skb_any() to free TX SKBs

From: [email-masked]
Date: Tue, 24 Mar 2026 12:30:04 +0000

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <[email-masked]>:

On Sat, 21 Mar 2026 22:04:41 +0800 you wrote:
> The napi_consume_skb() function is not intended to be called in an IRQ
> disabled context. However, after commit 6bc8a5098bf4 ("net: macb: Fix
> tx_ptr_lock locking"), the freeing of TX SKBs is performed with IRQs
> disabled. To resolve the following call trace, use dev_consume_skb_any()
> for freeing TX SKBs:
>    WARNING: kernel/softirq.c:430 at __local_bh_enable_ip+0x174/0x188, CPU#0: ksoftirqd/0/15
>    Modules linked in:
>    CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 7.0.0-rc4-next-20260319-yocto-standard-dirty #37 PREEMPT
>    Hardware name: ZynqMP ZCU102 Rev1.1 (DT)
>    pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
>    pc : __local_bh_enable_ip+0x174/0x188
>    lr : local_bh_enable+0x24/0x38
>    sp : ffff800082b3bb10
>    x29: ffff800082b3bb10 x28: ffff0008031f3c00 x27: 000000000011ede0
>    x26: ffff000800a7ff00 x25: ffff800083937ce8 x24: 0000000000017a80
>    x23: ffff000803243a78 x22: 0000000000000040 x21: 0000000000000000
>    x20: ffff000800394c80 x19: 0000000000000200 x18: 0000000000000001
>    x17: 0000000000000001 x16: ffff000803240000 x15: 0000000000000000
>    x14: ffffffffffffffff x13: 0000000000000028 x12: ffff000800395650
>    x11: ffff8000821d1528 x10: ffff800081c2bc08 x9 : ffff800081c1e258
>    x8 : 0000000100000301 x7 : ffff8000810426ec x6 : 0000000000000000
>    x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
>    x2 : 0000000000000008 x1 : 0000000000000200 x0 : ffff8000810428dc
>    Call trace:
>     __local_bh_enable_ip+0x174/0x188 (P)
>     local_bh_enable+0x24/0x38
>     skb_attempt_defer_free+0x190/0x1d8
>     napi_consume_skb+0x58/0x108
>     macb_tx_poll+0x1a4/0x558
>     __napi_poll+0x50/0x198
>     net_rx_action+0x1f4/0x3d8
>     handle_softirqs+0x16c/0x560
>     run_ksoftirqd+0x44/0x80
>     smpboot_thread_fn+0x1d8/0x338
>     kthread+0x120/0x150
>     ret_from_fork+0x10/0x20
>    irq event stamp: 29751
>    hardirqs last  enabled at (29750): [<ffff8000813be184>] _raw_spin_unlock_irqrestore+0x44/0x88
>    hardirqs last disabled at (29751): [<ffff8000813bdf60>] _raw_spin_lock_irqsave+0x38/0x98
>    softirqs last  enabled at (29150): [<ffff8000800f1aec>] handle_softirqs+0x504/0x560
>    softirqs last disabled at (29153): [<ffff8000800f2fec>] run_ksoftirqd+0x44/0x80
> 
> [...]

Here is the summary with links:
  - [net] net: macb: Use dev_consume_skb_any() to free TX SKBs
    https://git.kernel.org/netdev/net/c/647b8a2fe474

You are awesome, thank you!
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