From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f69.google.com (mail-oo1-f69.google.com [209.85.161.69]) (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 DCD723563E1 for ; Thu, 2 Apr 2026 03:39:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775101145; cv=none; b=c5U458kEXdRWvQcPHT8bXEKai6/K9eWhBAgv4kU26vneXR5X6Hd5tdrZ2pOsbD50F3JmLoDxCp0E0RgZIr2Okv/1fAz4HfvXiAWkmxbul1M7tW0wCWpH0Z6GnATU7CLxq3J31p8ztXNadBJnpH8RA8je6N8dzoIwZaxXjXKOnG4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775101145; c=relaxed/simple; bh=/oQPYI9WvXZ3yaZ1QNCs7ppG4vxa+fWKlpPG/HXE/Gw=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=n/d9LFwHTL1qBDx8ig8gn8siMuuK+vWG+pICZ0rSin/EpSyKhP+3T0IehMnR62NqJOqrjXSLC5hUX07cz2F3B6Koso/1rRtOMofd2WOnKs1DyRNEA1iPEG9s4XpXfP61/de5W94PzgQilncDp2LfHkzbjEn0AObpa+sS2Bn3Dts= 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=209.85.161.69 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-oo1-f69.google.com with SMTP id 006d021491bc7-67de56b5bd4so1768607eaf.0 for ; Wed, 01 Apr 2026 20:39:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775101143; x=1775705943; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=E8g9XkkWjftsC3xjtGTUfK99DwGJSb7dONEj1d3/ayg=; b=GjAqwT/XRu1/bYrd54S+WM+Wi2I86GP1YwF/+18U1b0leEc34nn3WWU4dsTefcXWtA 1WFiV0CBkWLqVJqfLamNwdosapQpoAE8lC2z7dEyE3C6pFujKujE+aYDUAVmXOr7l3Tp WKYqfQ3Cs0HqvcllJDU1z64/B1Lk/m0W52g32bG/+Vde4qOgdGG2mzHmekhjTFKQU7GS ViMVDyA7etkCHIdRXygivx4J9IMYHT8ixSVRn3lmDO6BCKPE0/ML9qnfMwHVp2xLNKKr HyJAynV6XZxPKr3ZhQJoquGUlva7ND1ux3XxT8BUSdnqYQ2LI9xE1WoJnyCHrLLCmlnk 0w9w== X-Forwarded-Encrypted: i=1; AJvYcCVADVmDRmcdsJz74eWuK7FRlnJ+qoGZFmlnQpQnMMzdxnrKjGreBXNMzGILqxlsLWQFBS4B4FxyBttalPA=@vger.kernel.org X-Gm-Message-State: AOJu0Ywq9ppGGctyI56hBwLEQKoWiAH5tLLTSCor2ffLkCNKiPPXrGNg 0Ly1xpaXDbh9axK5XqqLhe27v+uoxJcu+9yNkg0zTXNZ8JgVhqnUbbVc0lzpp2OxG5ohHLiwcqD LDj3ktaFiJO2wX6wgucjQ36+1eI8RVi+kFLsgClOdhXYWge3ysiJjCNOhJcM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2112:b0:67e:1380:a046 with SMTP id 006d021491bc7-680a63c9a67mr1209354eaf.30.1775101142745; Wed, 01 Apr 2026 20:39:02 -0700 (PDT) Date: Wed, 01 Apr 2026 20:39:02 -0700 In-Reply-To: <20260402021644.30008-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69cde4d6.050a0220.25c253.047b.GAE@google.com> Subject: Re: [syzbot] [net?] [bpf?] KASAN: slab-use-after-free Read in __sk_msg_recvmsg From: syzbot To: kartikey406@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in inet_sock_destruct ------------[ cut here ]------------ sk->sk_forward_alloc WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x62d/0x740 net/ipv4/af_inet.c:162, CPU#1: ksoftirqd/1/23 Modules linked in: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:inet_sock_destruct+0x62d/0x740 net/ipv4/af_inet.c:162 Code: 0f 0b 90 e9 58 fe ff ff e8 50 dd 9e f7 90 0f 0b 90 e9 8b fe ff ff e8 42 dd 9e f7 90 0f 0b 90 e9 b1 fe ff ff e8 34 dd 9e f7 90 <0f> 0b 90 e9 d7 fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 95 fc RSP: 0018:ffffc900001d7ae8 EFLAGS: 00010246 RAX: ffffffff8a26d13c RBX: dffffc0000000000 RCX: ffff88801daf8000 RDX: 0000000000000100 RSI: 0000000000000090 RDI: 0000000000000000 RBP: 0000000000000090 R08: ffff88801bffcf27 R09: 1ffff110037ff9e4 R10: dffffc0000000000 R11: ffffed10037ff9e5 R12: ffff88801bffcc80 R13: dffffc0000000000 R14: ffff88801bffcf0c R15: ffffffff8fca6c00 FS: 0000000000000000(0000) GS:ffff888125557000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdb873e9f00 CR3: 000000000e54c000 CR4: 00000000003526f0 Call Trace: __sk_destruct+0x85/0x880 net/core/sock.c:2350 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Tested on: commit: a77fb1ac Octeontx2-af: add WQ_PERCPU to alloc_workqueu.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git main console output: https://syzkaller.appspot.com/x/log.txt?x=137ed5da580000 kernel config: https://syzkaller.appspot.com/x/.config?x=71d49d824b43a0d9 dashboard link: https://syzkaller.appspot.com/bug?extid=431f9a9e3f5227fbb904 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=143bf0f2580000