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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58118C433FE for ; Mon, 15 Nov 2021 08:38:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E76761875 for ; Mon, 15 Nov 2021 08:38:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232430AbhKOIlo (ORCPT ); Mon, 15 Nov 2021 03:41:44 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:57101 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230047AbhKOIlV (ORCPT ); Mon, 15 Nov 2021 03:41:21 -0500 Received: by mail-io1-f71.google.com with SMTP id r199-20020a6b2bd0000000b005e234972ddfso10272102ior.23 for ; Mon, 15 Nov 2021 00:38:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=45KPnjgNpXV74fXbnG/ZGDYPdj4xK0W4REEDBd8I3to=; b=lS01DRWGXo/9Bv3l3GVYE0vE9nkbR+UmmLD9go/ROYOQcbMS4kQkw07cOsjPiG4T+7 N4zXoa/MLDU6sEya05sTfhWwWyUAtETZ3KxF30XJFujrJuDBmuWODTSkidc7qBPm2ix9 y4ah03BX3eovNyO2OtPzIHuNpAlTBLjDjoAa+6VN+pU0CyvCIuNEVirZ9iYZxQn2sRI9 SGgu/8yXEFHXjD1MpSB4UzK4lsulOgbzKyjk6b7KLBGcr76PKGvuoh8R/8e0K1xPBcDQ 3MItAxxPy8q1NeMtFOQKAuy9YleFu/VR2q5VF/fMqfJPUNnz6pQApuWpsJkawRr6x487 8J5Q== X-Gm-Message-State: AOAM532yXB6JOKgqlOB3IWvNdYuaqPz1kwswCgd26gpA79gnkqT/RcEC xPQ5Mk3UfVD0wOe7lNAB6iSR3y9qlx+28eFivkhXN5T7r1wK X-Google-Smtp-Source: ABdhPJwRgQGr9EeOkC+KCTUBhnSP/m0VgHnHjs2I2tJ7M/+PX+Hmz23heH5Bg+sNdDoDS7TWf3T155tJpzm/VH6FveybAeC4BKcs MIME-Version: 1.0 X-Received: by 2002:a5d:80c4:: with SMTP id h4mr24747166ior.40.1636965505998; Mon, 15 Nov 2021 00:38:25 -0800 (PST) Date: Mon, 15 Nov 2021 00:38:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007ea16705d0cfbb53@google.com> Subject: [syzbot] kernel BUG in pskb_expand_head From: syzbot To: anthony.l.nguyen@intel.com, davem@davemloft.net, intel-wired-lan@lists.osuosl.org, jesse.brandeburg@intel.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: debe436e77c7 Merge tag 'ext4_for_linus' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17cdbcf1b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=dcce4e862d74e466 dashboard link: https://syzkaller.appspot.com/bug?extid=4c63f36709a642f801c5 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4c63f36709a642f801c5@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:1695! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 13268 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:pskb_expand_head+0xb28/0x1060 net/core/skbuff.c:1695 Code: 8d 75 ff e9 60 fe ff ff e8 75 dd 5a fa 48 c7 c6 a0 60 8c 8a 4c 89 f7 e8 c6 d6 8d fa 0f 0b e8 5f dd 5a fa 0f 0b e8 58 dd 5a fa <0f> 0b e8 51 dd 5a fa 41 81 cc 00 00 02 00 e9 f6 f5 ff ff e8 40 dd RSP: 0018:ffffc90005a6f2e0 EFLAGS: 00010212 RAX: 0000000000030e8b RBX: ffff88801fa215c0 RCX: ffffc90020bf5000 RDX: 0000000000040000 RSI: ffffffff871c2298 RDI: 0000000000000003 RBP: 00000000ffffffbb R08: 0000000000000001 R09: ffff88801fa2169f R10: ffffffff871c1842 R11: 0000000000000000 R12: 0000000000000a20 R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f39135d8700(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020004038 CR3: 0000000065ef5000 CR4: 0000000000150ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __skb_pad+0x181/0x5f0 net/core/skbuff.c:1929 __skb_put_padto include/linux/skbuff.h:3331 [inline] skb_put_padto include/linux/skbuff.h:3350 [inline] eth_skb_pad include/linux/etherdevice.h:584 [inline] e1000_xmit_frame+0x2de3/0x4650 drivers/net/ethernet/intel/e1000/e1000_main.c:3125 __netdev_start_xmit include/linux/netdevice.h:4987 [inline] netdev_start_xmit include/linux/netdevice.h:5001 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3606 sch_direct_xmit+0x19f/0xbc0 net/sched/sch_generic.c:342 __dev_xmit_skb net/core/dev.c:3817 [inline] __dev_queue_xmit+0x149c/0x3630 net/core/dev.c:4194 llc_sap_action_send_test_c+0x22e/0x2c0 net/llc/llc_s_ac.c:144 llc_exec_sap_trans_actions net/llc/llc_sap.c:153 [inline] llc_sap_next_state net/llc/llc_sap.c:182 [inline] llc_sap_state_process+0x22a/0x4f0 net/llc/llc_sap.c:209 llc_ui_sendmsg+0x9f3/0x10b0 net/llc/af_llc.c:964 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x331/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmmsg+0x195/0x470 net/socket.c:2549 __do_sys_sendmmsg net/socket.c:2578 [inline] __se_sys_sendmmsg net/socket.c:2575 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2575 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3916062ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f39135d8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f3916175f60 RCX: 00007f3916062ae9 RDX: 03fffffffffffeed RSI: 0000000020001380 RDI: 0000000000000005 RBP: 00007f39160bcf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe4b72644f R14: 00007f39135d8300 R15: 0000000000022000 Modules linked in: ---[ end trace 518f993fe030bf9b ]--- RIP: 0010:pskb_expand_head+0xb28/0x1060 net/core/skbuff.c:1695 Code: 8d 75 ff e9 60 fe ff ff e8 75 dd 5a fa 48 c7 c6 a0 60 8c 8a 4c 89 f7 e8 c6 d6 8d fa 0f 0b e8 5f dd 5a fa 0f 0b e8 58 dd 5a fa <0f> 0b e8 51 dd 5a fa 41 81 cc 00 00 02 00 e9 f6 f5 ff ff e8 40 dd RSP: 0018:ffffc90005a6f2e0 EFLAGS: 00010212 RAX: 0000000000030e8b RBX: ffff88801fa215c0 RCX: ffffc90020bf5000 RDX: 0000000000040000 RSI: ffffffff871c2298 RDI: 0000000000000003 RBP: 00000000ffffffbb R08: 0000000000000001 R09: ffff88801fa2169f R10: ffffffff871c1842 R11: 0000000000000000 R12: 0000000000000a20 R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f39135d8700(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020004038 CR3: 0000000065ef5000 CR4: 0000000000150ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 --- 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.