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 X-Spam-Level: X-Spam-Status: No, score=-5.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E354CC282E1 for ; Fri, 24 May 2019 21:18:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B74D521773 for ; Fri, 24 May 2019 21:18:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404237AbfEXVSG (ORCPT ); Fri, 24 May 2019 17:18:06 -0400 Received: from mail-it1-f199.google.com ([209.85.166.199]:50402 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404230AbfEXVSG (ORCPT ); Fri, 24 May 2019 17:18:06 -0400 Received: by mail-it1-f199.google.com with SMTP id o128so9778284ita.0 for ; Fri, 24 May 2019 14:18:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=iwQ0M9CA7WD3CQrUHbNlAadS5e9SUIuyFRzHEIBPCXM=; b=YWcf1Ym7edcFUlgLYzfE2ON8OCYhXx2qpMmD4bzu4xcvO0stPlCQXarkrjUq2YFB4I YjJv9yg2lice+rjNM/oMh3g1IcXJvzCAXQM+/Fz5z9dpRuB+uM4L6OdRynlHs5mO7KhX 36xWZXcZ42t6niYYpgr93VA5AScskTLFSHBWnWkyW2fNCRrVzDOeBnRq1O4aDoEnF0gQ HUmVRDC757eG4N4+EWWlTv9RIbcZve5YDi4GWaXn7UbRDNsFnXM9xi0rXYOAi6PN9jFu X5Sa2g3xaS5eLafputPJSOTaAv/3E+qzlHo4rrMbHYIOB0kjq1RTRM+/i6WGiSnmvPuQ m+rQ== X-Gm-Message-State: APjAAAV6pEUcIsJ9OrBpitTtyHLCeUgRb0WZYd56qwirtpiBn0dT2+id QCkXjmwIDido7Py+vyZ4gWxOGyezpxMY7dNnhwIy/8dJhRGy X-Google-Smtp-Source: APXvYqw2HB6J75GoxtRxYkMnf6F2vK1JXy8Y5ouepC1qjzt+mjoav9oNRh5I4tAnqwBGDCpiyiyP7tdKO2lNbWz7DpOji1jwbcQA MIME-Version: 1.0 X-Received: by 2002:a5e:8805:: with SMTP id l5mr5254873ioj.90.1558732685179; Fri, 24 May 2019 14:18:05 -0700 (PDT) Date: Fri, 24 May 2019 14:18:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000000c060589a8bc66@google.com> Subject: memory leak in tipc_buf_acquire From: syzbot To: davem@davemloft.net, jon.maloy@ericsson.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 4dde821e Merge tag 'xfs-5.2-fixes-1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=107db73aa00000 kernel config: https://syzkaller.appspot.com/x/.config?x=61dd9e15a761691d dashboard link: https://syzkaller.appspot.com/bug?extid=78fbe679c8ca8d264a8d compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162bd84ca00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=160c605ca00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+78fbe679c8ca8d264a8d@syzkaller.appspotmail.com type=1400 audit(1558701681.775:36): avc: denied { map } for pid=7128 comm="syz-executor987" path="/root/syz-executor987656147" dev="sda1" ino=15900 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program BUG: memory leak unreferenced object 0xffff88810df83c00 (size 512): comm "softirq", pid 0, jiffies 4294942354 (age 19.830s) hex dump (first 32 bytes): 38 1a 0d 0f 81 88 ff ff 38 1a 0d 0f 81 88 ff ff 8.......8....... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000009375ee42>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000009375ee42>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000009375ee42>] slab_alloc_node mm/slab.c:3269 [inline] [<000000009375ee42>] kmem_cache_alloc_node+0x153/0x2a0 mm/slab.c:3579 [<000000004c563922>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:198 [<00000000ec87bfa1>] alloc_skb_fclone include/linux/skbuff.h:1107 [inline] [<00000000ec87bfa1>] tipc_buf_acquire+0x2f/0x80 net/tipc/msg.c:66 [<00000000d151ef84>] tipc_msg_create+0x37/0xe0 net/tipc/msg.c:98 [<000000008bb437b0>] tipc_group_create_event+0xb3/0x1b0 net/tipc/group.c:679 [<00000000947b1d0f>] tipc_group_proto_rcv+0x569/0x640 net/tipc/group.c:781 [<00000000b75ab039>] tipc_sk_proto_rcv net/tipc/socket.c:1996 [inline] [<00000000b75ab039>] tipc_sk_filter_rcv+0x9ac/0xf20 net/tipc/socket.c:2163 [<000000000dab7a6c>] tipc_sk_enqueue net/tipc/socket.c:2255 [inline] [<000000000dab7a6c>] tipc_sk_rcv+0x494/0x8a0 net/tipc/socket.c:2306 [<00000000023a7ddd>] tipc_node_xmit+0x196/0x1f0 net/tipc/node.c:1442 [<00000000337dd9eb>] tipc_node_xmit_skb net/tipc/node.c:1491 [inline] [<00000000337dd9eb>] tipc_node_distr_xmit+0x7d/0x120 net/tipc/node.c:1506 [<00000000b6375182>] tipc_group_delete+0xe6/0x130 net/tipc/group.c:224 [<000000000361ba2b>] tipc_sk_leave+0x57/0xb0 net/tipc/socket.c:2925 [<000000009df90505>] tipc_release+0x7b/0x5e0 net/tipc/socket.c:584 [<000000009f3189da>] __sock_release+0x4b/0xe0 net/socket.c:607 [<00000000d3568ee0>] sock_close+0x1b/0x30 net/socket.c:1279 [<00000000266a6215>] __fput+0xed/0x300 fs/file_table.c:280 BUG: memory leak unreferenced object 0xffff888111895400 (size 1024): comm "softirq", pid 0, jiffies 4294942354 (age 19.830s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000e2e2855e>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<00000000e2e2855e>] slab_post_alloc_hook mm/slab.h:439 [inline] [<00000000e2e2855e>] slab_alloc_node mm/slab.c:3269 [inline] [<00000000e2e2855e>] kmem_cache_alloc_node_trace+0x15b/0x2a0 mm/slab.c:3597 [<00000000a5030ce7>] __do_kmalloc_node mm/slab.c:3619 [inline] [<00000000a5030ce7>] __kmalloc_node_track_caller+0x38/0x50 mm/slab.c:3634 [<0000000039212451>] __kmalloc_reserve.isra.0+0x40/0xb0 net/core/skbuff.c:142 [<00000000307cb4cf>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:210 [<00000000ec87bfa1>] alloc_skb_fclone include/linux/skbuff.h:1107 [inline] [<00000000ec87bfa1>] tipc_buf_acquire+0x2f/0x80 net/tipc/msg.c:66 [<00000000d151ef84>] tipc_msg_create+0x37/0xe0 net/tipc/msg.c:98 [<000000008bb437b0>] tipc_group_create_event+0xb3/0x1b0 net/tipc/group.c:679 [<00000000947b1d0f>] tipc_group_proto_rcv+0x569/0x640 net/tipc/group.c:781 [<00000000b75ab039>] tipc_sk_proto_rcv net/tipc/socket.c:1996 [inline] [<00000000b75ab039>] tipc_sk_filter_rcv+0x9ac/0xf20 net/tipc/socket.c:2163 [<000000000dab7a6c>] tipc_sk_enqueue net/tipc/socket.c:2255 [inline] [<000000000dab7a6c>] tipc_sk_rcv+0x494/0x8a0 net/tipc/socket.c:2306 [<00000000023a7ddd>] tipc_node_xmit+0x196/0x1f0 net/tipc/node.c:1442 [<00000000337dd9eb>] tipc_node_xmit_skb net/tipc/node.c:1491 [inline] [<00000000337dd9eb>] tipc_node_distr_xmit+0x7d/0x120 net/tipc/node.c:1506 [<00000000b6375182>] tipc_group_delete+0xe6/0x130 net/tipc/group.c:224 [<000000000361ba2b>] tipc_sk_leave+0x57/0xb0 net/tipc/socket.c:2925 [<000000009df90505>] tipc_release+0x7b/0x5e0 net/tipc/socket.c:584 [<000000009f3189da>] __sock_release+0x4b/0xe0 net/socket.c:607 BUG: memory leak unreferenced object 0xffff88810e63de00 (size 512): comm "softirq", pid 0, jiffies 4294943548 (age 7.890s) hex dump (first 32 bytes): 38 10 0d 0f 81 88 ff ff 38 10 0d 0f 81 88 ff ff 8.......8....... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000009375ee42>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<000000009375ee42>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000009375ee42>] slab_alloc_node mm/slab.c:3269 [inline] [<000000009375ee42>] kmem_cache_alloc_node+0x153/0x2a0 mm/slab.c:3579 [<000000004c563922>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:198 [<00000000ec87bfa1>] alloc_skb_fclone include/linux/skbuff.h:1107 [inline] [<00000000ec87bfa1>] tipc_buf_acquire+0x2f/0x80 net/tipc/msg.c:66 [<00000000d151ef84>] tipc_msg_create+0x37/0xe0 net/tipc/msg.c:98 [<000000008bb437b0>] tipc_group_create_event+0xb3/0x1b0 net/tipc/group.c:679 [<00000000947b1d0f>] tipc_group_proto_rcv+0x569/0x640 net/tipc/group.c:781 [<00000000b75ab039>] tipc_sk_proto_rcv net/tipc/socket.c:1996 [inline] [<00000000b75ab039>] tipc_sk_filter_rcv+0x9ac/0xf20 net/tipc/socket.c:2163 [<000000000dab7a6c>] tipc_sk_enqueue net/tipc/socket.c:2255 [inline] [<000000000dab7a6c>] tipc_sk_rcv+0x494/0x8a0 net/tipc/socket.c:2306 [<00000000023a7ddd>] tipc_node_xmit+0x196/0x1f0 net/tipc/node.c:1442 [<00000000337dd9eb>] tipc_node_xmit_skb net/tipc/node.c:1491 [inline] [<00000000337dd9eb>] tipc_node_distr_xmit+0x7d/0x120 net/tipc/node.c:1506 [<00000000b6375182>] tipc_group_delete+0xe6/0x130 net/tipc/group.c:224 [<000000000361ba2b>] tipc_sk_leave+0x57/0xb0 net/tipc/socket.c:2925 [<000000009df90505>] tipc_release+0x7b/0x5e0 net/tipc/socket.c:584 [<000000009f3189da>] __sock_release+0x4b/0xe0 net/socket.c:607 [<00000000d3568ee0>] sock_close+0x1b/0x30 net/socket.c:1279 [<00000000266a6215>] __fput+0xed/0x300 fs/file_table.c:280 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches