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Wed, 25 Mar 2026 18:37:34 -0700 (PDT) From: =?UTF-8?q?=E5=82=85=E7=BB=A7=E6=99=97?= To: oscar.alfonso.diaz@gmail.com Cc: fjhhz1997@gmail.com, johannes@sipsolutions.net, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH v2] wifi: mac80211: fix the issue of NULL pointer access when deleting the virtual interface Date: Thu, 26 Mar 2026 09:37:19 +0800 Message-ID: <20260326013719.1662-1-fjhhz1997@gmail.com> X-Mailer: git-send-email 2.45.0.windows.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Óscar, Lucid-Duck spent some time trying to reproduce your crash and wasn't able to trigger it. Here's a summary of what was tested: - Kali 2025.4 (kernel 6.18.12+kali-amd64) VM on QEMU/KVM, with my v2 patch applied - MT7921AU USB adapter, passthrough to VM - Full airgeddon evil twin flow: monitor VIF + hostapd AP + continuous deauth via aireplay-ng - Also tested on bare metal Fedora 6.19.8 with the same adapter All tests were stable -- no crash, no dmesg errors, load stayed low. The deauth frames were confirmed sending for 30+ seconds under the v2 patch without issues. The one variable that couldn't be matched was the VM hypervisor. Lucid-Duck used QEMU/KVM, which handles USB passthrough at the kernel level (xHCI). If you're using VirtualBox or VMware, the USB passthrough path is quite different (userspace proxy), and that could potentially explain a total VM freeze that isn't a kernel panic. Could you please reply to Lucid-Duck directly on GitHub with the following information? Here's the link: https://github.com/morrownr/USB-WiFi/issues/682#issuecomment-4129198757 1. Which hypervisor are you using? (VirtualBox, VMware, QEMU/KVM, etc.) 2. Your exact USB adapter model and ID? (0e8d:7961 covers several MT7921 variants) 3. If possible, try SSHing into the VM from the host while the display is frozen -- if SSH still works, the issue is at the hypervisor/display level, not the kernel. Thanks, 傅继晗