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Fri, 05 Dec 2025 15:03:50 -0800 (PST) Received: from dkarn-thinkpadp16vgen1.punetw6.csb ([2402:e280:3e0d:a45:3861:8b7f:6ae1:6229]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-29daeae71eesm57758725ad.100.2025.12.05.15.03.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Dec 2025 15:03:50 -0800 (PST) From: Deepakkumar Karn To: johannes@sipsolutions.net Cc: dkarn@redhat.com, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, shaul.triebitz@intel.com, syzbot+5bb5f06f99924ea0cf86@syzkaller.appspotmail.com Subject: Re: [PATCH] mac80211_hwsim: fix divide error in mac80211_hwsim_link_info_changed Date: Sat, 6 Dec 2025 04:33:44 +0530 Message-ID: <20251205230344.326220-1-dkarn@redhat.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <717b98574a9037a5e81c929f97cc1258e00ee2f7.camel@sipsolutions.net> References: <717b98574a9037a5e81c929f97cc1258e00ee2f7.camel@sipsolutions.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Fri, 05 Dec 2025 18:39:49 +0100, Johannes Berg wrote: > Seems like we should not let userspace do that, to protect all other > drivers too, not just hwsim. As suggested, we should provide a zero-value division check for other drivers as well. I will investigate other places where divide errors can occur due to edge cases. Please let me know if you meant something different. In the meantime, I will analyze other drivers for similar cases. Thanks, Deepakkumar Karn