From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (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 544F51D432D for ; Sat, 14 Mar 2026 16:56:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773507390; cv=none; b=jhUZYIXImffMzQ7aWjQp0jHcAhgZKty2oltu04MMLsLGiERW+CrBp1o9VGZLLcELxIl5h4WaYlcMUCrU7ANPIhTi76Pj8rVE9lj4Mbvb1/YufoDtXT2yk9TJ/SJA/RRfbVRVgJUMy3Q2B0lsP+W8JxOfZHRdPpoW3SeVDY6eTHA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773507390; c=relaxed/simple; bh=xr+POcCpfs9cO0lUth94L1W+tqquTxdgvs052WUZgRM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=DOl/i6T1yfRDd1d0DKWjoYLqpYsM5LV20Q1+53FA7bH6OT32rA5E9/I5k6myEQvJVA7reTIOFBcYKXTPhq/QsqAB0F0mkjnBpTmJn62e9jyl9nSOldBQzQ0Tjrz1LSimR4r9BLP9opH3fZ1j5q/8G84WMut0C2q8G/OjzxTcH2M= 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=209.85.161.71 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-f71.google.com with SMTP id 006d021491bc7-67bb57af478so48851451eaf.1 for ; Sat, 14 Mar 2026 09:56:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773507388; x=1774112188; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=FpjDYaQvLSGD+SaXbcF6rYQe3AXTGT0kjYEb1W1u5aE=; b=m7l5597lYcqWDNoFH6tEQZcNQmKGyueD3p+5PNSDqlJc3SzeGIE/+/809XcGpE4+gH ckDm+Uf3dmcmg79LibfWlvVrXEUhiA7WdYt/erOjpAgBo75UCIsfzLOOR3yVN5znxb1u VkRIcP+LF4xTb6VKjFF5VdRw74gaIHHA4x3dOoMwrzokDLUwSqOQ3Yn8A6X8PeqtNHlL pwJpbdHlctoLWm8dc306NFY3JvF8fpeEhOgKvQKd2oyNGDqmZSRVdYY+MhpeMV9xZ8Z1 6R7qXlgoOzTDYXLxIV4LY96hgkoEHwD/VwyX9K6EHntWVcgJnfi/gmFWMFQNGl3sr2uz EFtg== X-Forwarded-Encrypted: i=1; AJvYcCUX9+hZkq9KbWJeHGphKwpQ6vDrBfArEg5xMMUojYXWHOwG0x71M1x9QbcW8hFo5MB4pdhU1ZQ=@vger.kernel.org X-Gm-Message-State: AOJu0YxsKceyYaaIqqtzsRWuHNBHmRIz2Hn663RYQcyeIIiLpcQF04uX HLimyOcXrs4qh4PDArPojBKTWcbsTyvv77bFRn1hHuZnEomVkmtbvD/A8AcE9J2tzwlR8qxDG9o Mr8/7yshqw6heJdJYO2gqPBw8yVxi5lmfno0IJR4xn2bwfdkP5zCBlTS6n/Y= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:178d:b0:67b:f13c:3fd2 with SMTP id 006d021491bc7-67bf13c4351mr764556eaf.62.1773507388329; Sat, 14 Mar 2026 09:56:28 -0700 (PDT) Date: Sat, 14 Mar 2026 09:56:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69b5933c.050a0220.248e02.00f2.GAE@google.com> Subject: [syzbot] [net?] kernel BUG in pfkey_send_migrate From: syzbot To: davem@davemloft.net, edumazet@google.com, herbert@gondor.apana.org.au, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, steffen.klassert@secunet.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 99600f79b28c mpls: add missing unregister_netdevice_notifi.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=12291def980000 kernel config: https://syzkaller.appspot.com/x/.config?x=779072223d02a312 dashboard link: https://syzkaller.appspot.com/bug?extid=b518dfc8e021988fbd55 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15123c16580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1598434a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/c7ebefcbe2a3/disk-99600f79.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/02ff03abfaec/vmlinux-99600f79.xz kernel image: https://storage.googleapis.com/syzbot-assets/0c74709d060b/bzImage-99600f79.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b518dfc8e021988fbd55@syzkaller.appspotmail.com skbuff: skb_over_panic: text:ffffffff8a752120 len:392 put:16 head:ffff88802a4ad040 data:ffff88802a4ad040 tail:0x188 end:0x180 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:214! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5984 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:214 Code: c7 60 24 dc 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 0e 55 f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003a06bc0 EFLAGS: 00010286 RAX: 0000000000000088 RBX: dffffc0000000000 RCX: efbd12c4feea6d00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 0000000000000180 R08: ffffc90003a06927 R09: 1ffff92000740d24 R10: dffffc0000000000 R11: fffff52000740d25 R12: ffff8880312a6510 R13: ffff88802a4ad040 R14: ffff88802a4ad040 R15: 0000000000000188 FS: 000055555b534500(0000) GS:ffff888125461000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbef80720c0 CR3: 000000007ae2a000 CR4: 00000000003526f0 Call Trace: skb_over_panic net/core/skbuff.c:219 [inline] skb_put+0x159/0x210 net/core/skbuff.c:2655 skb_put_zero include/linux/skbuff.h:2788 [inline] set_ipsecrequest net/key/af_key.c:3532 [inline] pfkey_send_migrate+0x1270/0x2e50 net/key/af_key.c:3636 km_migrate+0x155/0x260 net/xfrm/xfrm_state.c:2848 xfrm_migrate+0x2140/0x2450 net/xfrm/xfrm_policy.c:4705 xfrm_do_migrate+0x8ff/0xaa0 net/xfrm/xfrm_user.c:3150 xfrm_user_rcv_msg+0x746/0xb20 net/xfrm/xfrm_user.c:3507 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550 xfrm_netlink_rcv+0x79/0x90 net/xfrm/xfrm_user.c:3529 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2592 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2681 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbef819c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe28231e98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fbef8415fa0 RCX: 00007fbef819c799 RDX: 0000000000000000 RSI: 0000200000000380 RDI: 0000000000000004 RBP: 00007fbef8232c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbef8415fac R14: 00007fbef8415fa0 R15: 00007fbef8415fa0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:214 Code: c7 60 24 dc 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 0e 55 f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003a06bc0 EFLAGS: 00010286 RAX: 0000000000000088 RBX: dffffc0000000000 RCX: efbd12c4feea6d00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 0000000000000180 R08: ffffc90003a06927 R09: 1ffff92000740d24 R10: dffffc0000000000 R11: fffff52000740d25 R12: ffff8880312a6510 R13: ffff88802a4ad040 R14: ffff88802a4ad040 R15: 0000000000000188 FS: 000055555b534500(0000) GS:ffff888125461000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbef80720c0 CR3: 000000007ae2a000 CR4: 00000000003526f0 --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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