From: patchwork-bot+netdevbpf@kernel.org
To: Jinjian Song <jinjian.song@fibocom.com>
Cc: chandrashekar.devegowda@intel.com,
chiranjeevi.rapolu@linux.intel.com, haijun.liu@mediatek.com,
m.chetan.kumar@linux.intel.com, ricardo.martinez@linux.intel.com,
loic.poulain@linaro.org, ryazanov.s.a@gmail.com,
johannes@sipsolutions.net, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
linux-doc@vger.kernel.org,
angelogioacchino.delregno@collabora.com,
linux-arm-kernel@lists.infradead.org, matthias.bgg@gmail.com,
corbet@lwn.net, linux-mediatek@lists.infradead.org,
helgaas@kernel.org, danielwinkler@google.com,
andrew+netdev@lunn.ch, horms@kernel.org,
sreehari.kancharla@linux.intel.com,
ilpo.jarvinen@linux.intel.com
Subject: Re: [net v3] net: wwan: t7xx: Fix napi rx poll issue
Date: Tue, 03 Jun 2025 09:00:28 +0000 [thread overview]
Message-ID: <174894122801.1429658.207799656496074697.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20250530031648.5592-1-jinjian.song@fibocom.com>
Hello:
This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:
On Fri, 30 May 2025 11:16:48 +0800 you wrote:
> When driver handles the napi rx polling requests, the netdev might
> have been released by the dellink logic triggered by the disconnect
> operation on user plane. However, in the logic of processing skb in
> polling, an invalid netdev is still being used, which causes a panic.
>
> BUG: kernel NULL pointer dereference, address: 00000000000000f1
> Oops: 0000 [#1] PREEMPT SMP NOPTI
> RIP: 0010:dev_gro_receive+0x3a/0x620
> [...]
> Call Trace:
> <IRQ>
> ? __die_body+0x68/0xb0
> ? page_fault_oops+0x379/0x3e0
> ? exc_page_fault+0x4f/0xa0
> ? asm_exc_page_fault+0x22/0x30
> ? __pfx_t7xx_ccmni_recv_skb+0x10/0x10 [mtk_t7xx (HASH:1400 7)]
> ? dev_gro_receive+0x3a/0x620
> napi_gro_receive+0xad/0x170
> t7xx_ccmni_recv_skb+0x48/0x70 [mtk_t7xx (HASH:1400 7)]
> t7xx_dpmaif_napi_rx_poll+0x590/0x800 [mtk_t7xx (HASH:1400 7)]
> net_rx_action+0x103/0x470
> irq_exit_rcu+0x13a/0x310
> sysvec_apic_timer_interrupt+0x56/0x90
> </IRQ>
>
> [...]
Here is the summary with links:
- [net,v3] net: wwan: t7xx: Fix napi rx poll issue
https://git.kernel.org/netdev/net/c/905fe0845bb2
You are awesome, thank you!
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next prev parent reply other threads:[~2025-06-03 8:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-30 3:16 [net v3] net: wwan: t7xx: Fix napi rx poll issue Jinjian Song
2025-06-03 9:00 ` patchwork-bot+netdevbpf [this message]
2025-06-03 9:34 ` Larysa Zaremba
2025-06-04 10:19 ` Jinjian Song
2025-06-04 12:01 ` Larysa Zaremba
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