From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f197.google.com (mail-oi1-f197.google.com [209.85.167.197]) (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 4656037205D for ; Sun, 27 Sep 2026 12:19:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790511544; cv=none; b=UlbKCmuFexPNRhY6YQUjafM+It/1Lsr0i6WLYzkNngtnFwkIaPxhHw2wW7bVS3FXpcfV5fX/MT1hfLRxFk5uwatoLQECzyc1bJK3a2IKcdE4m1VKpTpksaGTwps8g5hlP0tPzrqxD6joNABp7hqz7WvzBwh+HBfq9Zmq+KS6MRo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790511544; c=relaxed/simple; bh=a8n1E2/lMVF1zqBZxT6CmOyrlFh/Zu9ZIDll06CmaEM=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=JRkXirgl9i3TBV036oxgOXKbBTS7cde6no05kTA9UhTb3KmH0V0GSGAD6+s6Ls1T6mW162UzRukNjqQAA4qQZZ9aOm5UFYAh5Hdw5uwPjc7n9fARkzRxOQMOVnUhPeJ1RTnb+uj7AM3DJRkBn7XK59ngAwrtSCuZ1NCCQx5uKVM= 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=209.85.167.197 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-f197.google.com with SMTP id 5614622812f47-4b28dbf4197so4667949b6e.2 for ; Sun, 27 Sep 2026 05:19:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790511542; x=1791116342; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=gCTWLbJQ8Ce/a5WTqLJ7RH9q86LaM3ig7/K74TA/OjE=; b=eisKI+zGojS9dGBG0VBSxmesCCyzD4zCflMl5RGloo/zVes10zKQydRZudLlHBEkme PSic8vsk0FlBgfnZ6v/zjd2fQGyB7LkeQEDeYjUcTiIKCMbI9+x//IPUtid2aQ0VwDJF sBhrlYaqjVcIs8/7Sr8vT5qFtbj7AaOJZ1DntYLZpXHL1sAEn07LNCZluyHA/HzLBfgT tSRBNRhUnt36VzWUyd8JdnWN/HdEV/gljnbjjT1pGN/waqEl36AhfL+1lg0jQdPs/neY vwhKvpFSfv1L9nOwe0IXBEVpLjIWZ+F+la6FWemehYKNzYfohFHqJOOd8BlD9ACoyq8O nznA== X-Forwarded-Encrypted: i=1; AKwUvByqBjOGqL0FAcBmrVJpHz8KaUCZfHNM2h/eTaoj0oZsboGDtj5eaaQNmlqj/avd1SFolREJcFVjBN7qAnc=@vger.kernel.org X-Gm-Message-State: AFuF++n89owGbwDdpeIGePOK5M+l1qxLxyCXdS8rt9xLHJQo6aIBIGUZ Fq7eWoGzu9nHuLZeYxtKvEAyixDa+Pp+KRkef6yFOZpTLiyJq2m8q/SW9EVowSAmHT2GWkQ9Z5T sPB0jJqf5+VTsoq6qwfhifsCjmP767aGh6vO4W+8jGMfOi1I166a50GLH5X0= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:eca:b0:4c3:bc6a:a328 with SMTP id 5614622812f47-4d72df6fcebmr10064801b6e.31.1790511542277; Sun, 27 Sep 2026 05:19:02 -0700 (PDT) Date: Sun, 27 Sep 2026 05:19:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ab909b6.e548f532.1ca396.003c.GAE@google.com> Subject: Re: [syzbot] [net?] [afs?] kernel BUG in rxrpc_destroy_all_connections (2) From: syzbot To: azpijr@gmail.com, davem@davemloft.net, dhowells@redhat.com, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, marc.dionne@auristor.com, netdev@vger.kernel.org, pabeni@redhat.com, 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: kernel BUG in rxrpc_destroy_all_connections rxrpc: AF_RXRPC: proc conn 7f4 cid fba44d28 state 7 ref 1 act 0 flags 2 cache_empty 1 calls 0000000000000000 0000000000000000 0000000000000000 0000000000000000 bundle ffff88802d3d1000 rxrpc: Assertion failed ------------[ cut here ]------------ kernel BUG at net/rxrpc/conn_object.c:506! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 5762 Comm: kworker/u32:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: netns cleanup_net RIP: 0010:rxrpc_destroy_all_connections.cold+0x12/0x34f net/rxrpc/conn_object.c:506 Code: ff 90 0f 0b e8 6e a7 99 00 48 c7 c7 20 73 5d 8d e8 72 be af ff 90 0f 0b e8 5a a7 99 00 48 c7 c7 20 73 5d 8d e8 5e be af ff 90 <0f> 0b e8 46 a7 99 00 48 c7 c7 60 78 5d 8d e8 4a be af ff 4c 89 e7 RSP: 0018:ffffc9000443f928 EFLAGS: 00010286 RAX: 0000000000000017 RBX: ffff888054ab4000 RCX: 0000000000000000 RDX: 0000000000000017 RSI: ffffffff81ea2579 RDI: fffff52000887f16 RBP: ffff888054ab4064 R08: 0000000000000007 R09: 0000000000000000 R10: 8000000000000000 R11: 0000000000000001 R12: ffff888054ab4098 R13: ffff888054ab3e70 R14: ffff888054ab4078 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880d5e52000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe0fcd74e9c CR3: 0000000035950000 CR4: 0000000000352ef0 Call Trace: rxrpc_exit_net+0x7b/0xc0 net/rxrpc/net_ns.c:113 ops_exit_list net/core/net_namespace.c:200 [inline] ops_undo_list+0x2ee/0xab0 net/core/net_namespace.c:253 cleanup_net+0x499/0x920 net/core/net_namespace.c:706 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 process_scheduled_works kernel/workqueue.c:3479 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560 kthread+0x373/0x450 kernel/kthread.c:436 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:rxrpc_destroy_all_connections.cold+0x12/0x34f net/rxrpc/conn_object.c:506 Code: ff 90 0f 0b e8 6e a7 99 00 48 c7 c7 20 73 5d 8d e8 72 be af ff 90 0f 0b e8 5a a7 99 00 48 c7 c7 20 73 5d 8d e8 5e be af ff 90 <0f> 0b e8 46 a7 99 00 48 c7 c7 60 78 5d 8d e8 4a be af ff 4c 89 e7 RSP: 0018:ffffc9000443f928 EFLAGS: 00010286 RAX: 0000000000000017 RBX: ffff888054ab4000 RCX: 0000000000000000 RDX: 0000000000000017 RSI: ffffffff81ea2579 RDI: fffff52000887f16 RBP: ffff888054ab4064 R08: 0000000000000007 R09: 0000000000000000 R10: 8000000000000000 R11: 0000000000000001 R12: ffff888054ab4098 R13: ffff888054ab3e70 R14: ffff888054ab4078 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880d5e52000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe0fcd74e9c CR3: 0000000035950000 CR4: 0000000000352ef0 Tested on: commit: a7bfaba4 ipv6: fix prefix route expiry in modify_prefi.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git console output: https://syzkaller.appspot.com/x/log.txt?x=13e06605580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d012d9c67977ee4 dashboard link: https://syzkaller.appspot.com/bug?extid=89001660f14fb7684c83 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=124d5315580000