From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B74807478 for ; Tue, 6 Oct 2026 00:04:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791245080; cv=none; b=Xf4aHtdt5y9TTw1YpVNJoBVlyGM7RXUiz61u1AaavD4w8QWS8li0KKzNHTW2dEQD45IIY/DF72l1XQQVeShADa6/P4n8OXCePnethOhYpwBNHXrGRVV55vnMxs3bin+wZCSB/IFsLxcVXpvNMyxnXjvkgPrWtz+90tzKPua4A9I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791245080; c=relaxed/simple; bh=P2ZLfK5sQH+NFxJaRgE3SKD/e9ahhwg1IfGSDEhQpyE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Wn/HulAtsYz6FyPQiSA8+PRByM7mlNlSsKDkn5YFqgvV1FQQaT2T72uBEKUAITJp0dL/fXBu9IflzmbXC3A7cdcyIgeHlqSTKOkEBlMmwREcyNgMjsWIqB+9il20LDb46K1+teziuvNRcK2n+7YMH84TIfAn6qO49icE8WQsGd0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.167.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi1-f199.google.com with SMTP id 5614622812f47-4d2f0f77124so2734364b6e.3 for ; Mon, 05 Oct 2026 17:04:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791245077; x=1791849877; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=YZfHvdcoS6BGVaobjlEJFKWcAFbVdkN8rdALLDkhIdI=; b=AugbAIUJcuaJc6VQyzjBIUZMc0TH+JLpPpmdft3yBedmzJmiJsvn0HV2UxZvsByxzY KsQPKeBlBdj7YE53Jtfr3A1ABRkrIC4w5WD0Rfn4QV8Np4OBIOFDOcdNVU1LgB0HMkZZ 9Z+97LlbHxbqY/AATcy/Xdk0VALXEKLFjDpMWHDTiW0X/zJfv4yxZ5rfrlodJ5OZH22Z GSphbZs3Yunz+3v1HDZu+huz4sKbYLTDbIreyUkCpdKiahISHsKeLk2M8SNYZOFKY3LF 3Ogu6qvKR/kBRkMRBiLh2Dtk3AovGTnpvc4oGCElDPwBjTmIazFi3/Mc57Sckvu/q3fl /DNQ== X-Forwarded-Encrypted: i=1; AKwUvBwjuxGuPQSPHvGYX3fBqv4qirxJRqosE/L2u9OrZkkqETcMVdnoiowotqrHOZ1s2xFvhbF74Jw=@vger.kernel.org X-Gm-Message-State: AFuF++mDGVF1swOgQU9oa2cZsCiqDn6c5hc1lhqSZvYPyTT2OMIRsrF0 t4oWXhBVRMNvirJK9k6li/mxrK9tJwI2UXZZiY4HaVBRtkFDVdU1dgrIBr0x0RKgM0jCEMtfVNh KkvCdW/rIhRrR/UsjVjlpsiE85A/r7jJg0XzCDkS4GV8Eee9iv9J0tH82oS4= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:470b:b0:4ec:19e3:4072 with SMTP id 5614622812f47-4f529d205afmr11124559b6e.18.1791245077677; Mon, 05 Oct 2026 17:04:37 -0700 (PDT) Date: Mon, 05 Oct 2026 17:04:37 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ac43b15.34119e79.2f92f3.0039.GAE@google.com> Subject: [syzbot] [wireless?] WARNING in cfg80211_ibss_joined From: syzbot To: johannes@sipsolutions.net, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 7b12c538697f Merge branch 'bpf-fix-objects-stuck-in-free_b.. git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=16192035580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9d4242cb1c54cdf7 dashboard link: https://syzkaller.appspot.com/bug?extid=d0a52209bddfa0948065 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4306e2a7031b/disk-7b12c538.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4f631dc420c7/vmlinux-7b12c538.xz kernel image: https://storage.googleapis.com/syzbot-assets/6633caf1195c/bzImage-7b12c538.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d0a52209bddfa0948065@syzkaller.appspotmail.com wlan1: Creating new IBSS network, BSSID 8d:8d:8d:ff:00:00 ------------[ cut here ]------------ !bss WARNING: net/wireless/ibss.c:72 at cfg80211_ibss_joined+0x3a7/0x5b0 net/wireless/ibss.c:72, CPU#1: kworker/u8:15/6639 Modules linked in: CPU: 1 UID: 0 PID: 6639 Comm: kworker/u8:15 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:cfg80211_ibss_joined+0x3a7/0x5b0 net/wireless/ibss.c:72 Code: 48 89 da 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 fd 81 50 f6 e8 d8 25 8a f6 90 0f 0b 90 e9 0b fd ff ff e8 ca 25 8a f6 90 <0f> 0b 90 eb 5c 44 89 fe 83 e6 01 31 ff e8 b7 2a 8a f6 44 89 f8 83 RSP: 0018:ffffc90010217570 EFLAGS: 00010293 RAX: ffffffff8b3db6f6 RBX: 0000000000000001 RCX: ffff888032853e80 RDX: 0000000000000000 RSI: ffffffff8c6da760 RDI: ffffffff8c6da720 RBP: ffff888069cc3518 R08: ffffffff907a547f R09: 1ffffffff20f4a8f R10: dffffc0000000000 R11: fffffbfff20f4a90 R12: ffff8880561e4ed0 R13: 0000000000000001 R14: 1ffff1100ac3c9da R15: 0000000000000cc0 FS: 0000000000000000(0000) GS:ffff888124dcb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb644e39246 CR3: 0000000059b92000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __ieee80211_sta_join_ibss+0xdd8/0x1660 net/mac80211/ibss.c:375 ieee80211_sta_create_ibss+0x300/0x480 net/mac80211/ibss.c:1287 ieee80211_sta_find_ibss net/mac80211/ibss.c:1448 [inline] ieee80211_ibss_work+0xb85/0x1060 net/mac80211/ibss.c:1637 cfg80211_wiphy_work+0x29e/0x420 net/wireless/core.c:564 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup