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([121.185.186.233]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a7190ab9cbsm98532215ad.14.2026.01.19.06.38.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jan 2026 06:38:18 -0800 (PST) From: Jeongjun Park To: syzbot+81cd9dc1596563141d19@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [wireless?] general protection fault in ieee80211_put_srates_elem Date: Mon, 19 Jan 2026 23:38:15 +0900 Message-Id: <20260119143815.198401-1-aha310510@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <696e34bf.a70a0220.34546f.04ad.GAE@google.com> References: <696e34bf.a70a0220.34546f.04ad.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test upstream master --- net/mac80211/mesh.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 68901f1def0d..eb3a346226bd 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -964,6 +964,8 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh) sdata = container_of(ifmsh, struct ieee80211_sub_if_data, u.mesh); sband = ieee80211_get_sband(sdata); + if (!sband) + return -EINVAL; ie_len_he_cap = ieee80211_ie_len_he_cap(sdata); ie_len_eht_cap = ieee80211_ie_len_eht_cap(sdata); --