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e9e14a558f8ab-3ce849c00d4mr72302085ab.4.1737049111314; Thu, 16 Jan 2025 09:38:31 -0800 (PST) Date: Thu, 16 Jan 2025 09:38:31 -0800 In-Reply-To: <67605870.050a0220.37aaf.0137.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67894417.050a0220.20d369.0040.GAE@google.com> Subject: Re: [syzbot] Re: [syzbot] [mptcp?] WARNING in __mptcp_clean_una (2) From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Re: [syzbot] [mptcp?] WARNING in __mptcp_clean_una (2) Author: pabeni@redhat.com On 12/16/24 5:42 PM, syzbot wrote: > syzbot found the following issue on: > > HEAD commit: 00a5acdbf398 bpf: Fix configuration-dependent BTF function.. > git tree: bpf-next > console output: https://syzkaller.appspot.com/x/log.txt?x=148de730580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=fee25f93665c89ac > dashboard link: https://syzkaller.appspot.com/bug?extid=ebc0b8ae5d3590b2c074 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d82344580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=179654f8580000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/fc306c95490c/disk-00a5acdb.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/e17d5125ee77/vmlinux-00a5acdb.xz > kernel image: https://storage.googleapis.com/syzbot-assets/65f791a7fd14/bzImage-00a5acdb.xz > > The issue was bisected to: > > commit 3f83d8a77eeeb47011b990fd766a421ee64f1d73 > Author: Paolo Abeni > Date: Thu Feb 8 18:03:51 2024 +0000 > > mptcp: fix more tx path fields initialization > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12d2c7e8580000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=11d2c7e8580000 > console output: https://syzkaller.appspot.com/x/log.txt?x=16d2c7e8580000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+ebc0b8ae5d3590b2c074@syzkaller.appspotmail.com > Fixes: 3f83d8a77eee ("mptcp: fix more tx path fields initialization") > > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 9846 at net/mptcp/protocol.c:1024 __mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1024 > Modules linked in: > CPU: 0 UID: 0 PID: 9846 Comm: syz-executor351 Not tainted 6.13.0-rc2-syzkaller-00059-g00a5acdbf398 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 > RIP: 0010:__mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1024 > Code: fa ff ff 48 8b 4c 24 18 80 e1 07 fe c1 38 c1 0f 8c 8e fa ff ff 48 8b 7c 24 18 e8 e0 db 54 f6 e9 7f fa ff ff e8 e6 80 ee f5 90 <0f> 0b 90 4c 8b 6c 24 40 4d 89 f4 e9 04 f5 ff ff 44 89 f1 80 e1 07 > RSP: 0018:ffffc9000c0cf400 EFLAGS: 00010293 > RAX: ffffffff8bb0dd5a RBX: ffff888033f5d230 RCX: ffff888059ce8000 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: ffffc9000c0cf518 R08: ffffffff8bb0d1dd R09: 1ffff110170c8928 > R10: dffffc0000000000 R11: ffffed10170c8929 R12: 0000000000000000 > R13: ffff888033f5d220 R14: dffffc0000000000 R15: ffff8880592b8000 > FS: 00007f6e866496c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f6e86f491a0 CR3: 00000000310e6000 CR4: 00000000003526f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > __mptcp_clean_una_wakeup+0x7f/0x2d0 net/mptcp/protocol.c:1074 > mptcp_release_cb+0x7cb/0xb30 net/mptcp/protocol.c:3493 > release_sock+0x1aa/0x1f0 net/core/sock.c:3640 > inet_wait_for_connect net/ipv4/af_inet.c:609 [inline] > __inet_stream_connect+0x8bd/0xf30 net/ipv4/af_inet.c:703 > mptcp_sendmsg_fastopen+0x2a2/0x530 net/mptcp/protocol.c:1755 > mptcp_sendmsg+0x1884/0x1b10 net/mptcp/protocol.c:1830 > sock_sendmsg_nosec net/socket.c:711 [inline] > __sock_sendmsg+0x1a6/0x270 net/socket.c:726 > ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2583 > ___sys_sendmsg net/socket.c:2637 [inline] > __sys_sendmsg+0x269/0x350 net/socket.c:2669 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7f6e86ebfe69 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 1f 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007f6e86649168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > RAX: ffffffffffffffda RBX: 00007f6e86f491b8 RCX: 00007f6e86ebfe69 > RDX: 0000000030004001 RSI: 0000000020000080 RDI: 0000000000000003 > RBP: 00007f6e86f491b0 R08: 00007f6e866496c0 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6e86f491bc > R13: 000000000000006e R14: 00007ffe445d9420 R15: 00007ffe445d9508 > I can't repro the issue locally on net, please let me double check if the bot can reply it on such a tree and additionally add report debug info if the splat happens #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git main