From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.zx2c4.com (lists.zx2c4.com [165.227.139.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 10336C5AD49 for ; Mon, 2 Jun 2025 13:21:53 +0000 (UTC) Received: by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 861c6b36; Mon, 2 Jun 2025 13:21:52 +0000 (UTC) Received: from mail-qv1-f78.google.com (mail-qv1-f78.google.com [209.85.219.78]) by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id 285bb18f (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO) for ; Mon, 2 Jun 2025 13:21:50 +0000 (UTC) Received: by mail-qv1-f78.google.com with SMTP id 6a1803df08f44-6fad8b4c92cso52939206d6.0 for ; Mon, 02 Jun 2025 06:21:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748870509; x=1749475309; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=HUxnwz0MGqaQx/zzJuI4xbyeSwmPEWwIYhs+1mkMIT8=; b=Ovv6WdNUvyhfyAmb0UzEapwRZjwOBlS52wXkCde7rxdiU6gW59mvGA0wOjvThIkiP0 vXKSV+DnL/FZ8TM6hRu1ztMAZe30RfxGcU4j1lKKA/WOa4vMDKXIq/nMnq72/Ef63Ahn iXkKXcStzX0DXXgvbbwgt3x4+LROLsFJElXF//ROJLL/grhVK7lq0X6XfiVfJR1Ihpwi qqGV1NKDvwQ4FA4LVKZU5HJ/j+pvcM8cnEBqpOOc1gOe6SrpVlTuaqzHBziMmOmqq0DO m8rEiwh29UeTKdjGjbombHsgAEEJjxiborit5qL/0Ktnn29YK7b6yVDCglfp6T2rIKe1 zpmQ== X-Forwarded-Encrypted: i=1; AJvYcCUz4FEUa5rlbqWe2CRLCqozQERCjDOzxlaZW8Dh/wZ0zprV5Fjyflzr5Apgd0iVgwk+EezhBFPH5/g=@lists.zx2c4.com X-Gm-Message-State: AOJu0YynTlJtVzSNMs8uQA4Sx9xE94lG5rPRBjjB2TPpcGt1PA/431Kd rXS2yMjN/rH6WTts5C+1vEIngW6OtHNSTX/NpyiIWPbms50mTB1jXnlWAjf7lJGC2wvMceEi1eI N8YEYp1dTQguR9Nn8VQ1hap8KATvfKh1ZgyTNOLNmVAggUwIAsqCk7m+XHy8= X-Google-Smtp-Source: AGHT+IEh3nfkVLswdHnJS8ur7GuATtva0rua850ix/lTROv5zWXN/jjUZkJz7/vW14hs16b5xIOW7gtzQrm24KrNeMlkL6Gv7a0y MIME-Version: 1.0 X-Received: by 2002:a05:6e02:154e:b0:3dd:75fe:9d68 with SMTP id e9e14a558f8ab-3dd9cc02bf8mr114767705ab.17.1748870494212; Mon, 02 Jun 2025 06:21:34 -0700 (PDT) Date: Mon, 02 Jun 2025 06:21:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <683da55e.a00a0220.d8eae.0052.GAE@google.com> Subject: [syzbot] [net?] general protection fault in veth_xdp_rcv From: syzbot To: Jason@zx2c4.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, wireguard@lists.zx2c4.com Content-Type: text/plain; charset="UTF-8" X-BeenThere: wireguard@lists.zx2c4.com X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: wireguard-bounces@lists.zx2c4.com Sender: "WireGuard" Hello, syzbot found the following issue on: HEAD commit: 4cb6c8af8591 selftests/filesystems: Fix build of anon_inod.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11e8300c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5319177d225a42f1 dashboard link: https://syzkaller.appspot.com/bug?extid=c4c7bf27f6b0c4bd97fe compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-4cb6c8af.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bc0e5dfdd686/vmlinux-4cb6c8af.xz kernel image: https://storage.googleapis.com/syzbot-assets/2cdd323de6ca/bzImage-4cb6c8af.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c4c7bf27f6b0c4bd97fe@syzkaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xdffffc0000000098: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x00000000000004c0-0x00000000000004c7] CPU: 1 UID: 0 PID: 5975 Comm: kworker/1:4 Not tainted 6.15.0-syzkaller-10402-g4cb6c8af8591 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker RIP: 0010:netdev_get_tx_queue include/linux/netdevice.h:2636 [inline] RIP: 0010:veth_xdp_rcv.constprop.0+0x142/0xda0 drivers/net/veth.c:912 Code: 54 d9 31 fb 45 85 e4 0f 85 db 08 00 00 e8 06 de 31 fb 48 8d bd c0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 18 0c 00 00 44 8b a5 c0 04 00 RSP: 0018:ffffc900006a09b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff868a1686 RDX: 0000000000000098 RSI: ffffffff868a0d9a RDI: 00000000000004c0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: ffffc900006a0ff8 R12: 0000000000000001 R13: 1ffff920000d4145 R14: ffffc900006a0e58 R15: ffff8880503d0000 FS: 0000000000000000(0000) GS:ffff8880d686e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe5e3a6ad58 CR3: 000000000e382000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: veth_poll+0x19c/0x9c0 drivers/net/veth.c:979 __napi_poll.constprop.0+0xba/0x550 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0xa9f/0xfe0 net/core/dev.c:7605 handle_softirqs+0x219/0x8e0 kernel/softirq.c:579 do_softirq kernel/softirq.c:480 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:467 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:407 local_bh_enable include/linux/bottom_half.h:33 [inline] fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline] kernel_fpu_end+0x5e/0x70 arch/x86/kernel/fpu/core.c:476 blake2s_compress+0x7f/0xe0 arch/x86/lib/crypto/blake2s-glue.c:46 blake2s_final+0xc9/0x150 lib/crypto/blake2s.c:54 hmac.constprop.0+0x335/0x420 drivers/net/wireguard/noise.c:333 kdf.constprop.0+0x122/0x280 drivers/net/wireguard/noise.c:360 mix_dh+0xe8/0x150 drivers/net/wireguard/noise.c:413 wg_noise_handshake_consume_initiation+0x265/0x880 drivers/net/wireguard/noise.c:608 wg_receive_handshake_packet+0x219/0xbf0 drivers/net/wireguard/receive.c:144 wg_packet_handshake_receive_worker+0x17f/0x3a0 drivers/net/wireguard/receive.c:213 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:netdev_get_tx_queue include/linux/netdevice.h:2636 [inline] RIP: 0010:veth_xdp_rcv.constprop.0+0x142/0xda0 drivers/net/veth.c:912 Code: 54 d9 31 fb 45 85 e4 0f 85 db 08 00 00 e8 06 de 31 fb 48 8d bd c0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 18 0c 00 00 44 8b a5 c0 04 00 RSP: 0018:ffffc900006a09b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff868a1686 RDX: 0000000000000098 RSI: ffffffff868a0d9a RDI: 00000000000004c0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: ffffc900006a0ff8 R12: 0000000000000001 R13: 1ffff920000d4145 R14: ffffc900006a0e58 R15: ffff8880503d0000 FS: 0000000000000000(0000) GS:ffff8880d686e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe5e3a6ad58 CR3: 000000000e382000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 54 push %rsp 1: d9 31 fnstenv (%rcx) 3: fb sti 4: 45 85 e4 test %r12d,%r12d 7: 0f 85 db 08 00 00 jne 0x8e8 d: e8 06 de 31 fb call 0xfb31de18 12: 48 8d bd c0 04 00 00 lea 0x4c0(%rbp),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e 18 0c 00 00 jle 0xc52 3a: 44 rex.R 3b: 8b .byte 0x8b 3c: a5 movsl %ds:(%rsi),%es:(%rdi) 3d: c0 .byte 0xc0 3e: 04 00 add $0x0,%al --- 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