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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 15703C433F4 for ; Fri, 21 Sep 2018 08:35:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C30992147C for ; Fri, 21 Sep 2018 08:35:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C30992147C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389528AbeIUOWw (ORCPT ); Fri, 21 Sep 2018 10:22:52 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:54349 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389511AbeIUOWv (ORCPT ); Fri, 21 Sep 2018 10:22:51 -0400 Received: by mail-io1-f70.google.com with SMTP id l24-v6so19056548iok.21 for ; Fri, 21 Sep 2018 01:35:03 -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=RAwuJWH0FaepMt26Z+HoL0YZOLWhlntXcBvX57FFTdg=; b=dCGfamvpiNoNGnXKJIoTngLIX1D0k2xIAEm5PPvDhnLhnrsfsE47RZbUew2iXpQwNx w+Vga7FolAbPcxBLcy0BXjsRW9KrcYgNmQWj4JimwrRjwIQDcnx0+q0VOa7S8Rt0y+Jz Wpt+26/rJIoqzl1mOGsUMZyu5lCUN4Up8/LZ7FoZBcO6rAm5VO51lWGyqd3qp0Hx/ISl XpuenVr3+AazZn1UjkylTC6ZLxhBPO+TWHRuXlRolxMRpZYPGYMplyMNutliK9KbmDEZ BY4MYAh5sj/kSISyxtzpOPRjCCCdr5ylXA2X3jGuYedEAs5euxfs8d0PzML1akv7/mKv kvoA== X-Gm-Message-State: ABuFfohypIuHKYoTXjyTKKvA3Yq0FqkkxCiBB79yGADaa6kcw3n9T5VH WMpGaV0hQXRhDi2WZ8tIiLLNkznmlcE2OB/bXsBvO3QErPtS X-Google-Smtp-Source: ACcGV60w1PxPTHBy37RMigEAaxH6skuwSppJw35XSoQjS+dl1jEtOSeVmXLcT/QBRWBeeEBz6Gse3rJTytatxG61wg21u+sMmDS9 MIME-Version: 1.0 X-Received: by 2002:a6b:5f02:: with SMTP id t2-v6mr199435iob.15.1537518903040; Fri, 21 Sep 2018 01:35:03 -0700 (PDT) Date: Fri, 21 Sep 2018 01:35:03 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000d23fc05765d8484@google.com> Subject: general protection fault in addr_resolve From: syzbot To: danielj@mellanox.com, dledford@redhat.com, jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, parav@mellanox.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: a0cb0cabe4bb Add linux-next specific files for 20180920 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14b14e2a400000 kernel config: https://syzkaller.appspot.com/x/.config?x=786006c5dafbadf6 dashboard link: https://syzkaller.appspot.com/bug?extid=20c32fa6ff84a2d28c36 compiler: gcc (GCC) 8.0.1 20180413 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+20c32fa6ff84a2d28c36@syzkaller.appspotmail.com kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 976 Comm: syz-executor4 Not tainted 4.19.0-rc4-next-20180920+ #76 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:copy_src_l2_addr drivers/infiniband/core/addr.c:489 [inline] RIP: 0010:rdma_set_src_addr_rcu drivers/infiniband/core/addr.c:518 [inline] RIP: 0010:addr_resolve+0x7c4/0x1c90 drivers/infiniband/core/addr.c:593 Code: 0f 84 dd 01 00 00 e8 9b 6c e9 fb 48 8b 85 d8 fd ff ff 48 8d b8 54 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 24 RSP: 0018:ffff8801c863f360 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801c863f578 RCX: ffffc90003e76000 RDX: 000000000000003e RSI: ffffffff8593e355 RDI: 00000000000001f1 RBP: ffff8801c863f5a0 R08: ffff8801d95722c0 R09: ffffed003b585b57 R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: ffff8801d78a1560 R13: 0000000000000001 R14: 000000000000000a R15: 0000000000000000 kobject: 'loop5' (000000009a4a0383): kobject_uevent_env FS: 00007fefce9ca700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000706158 CR3: 00000001d370a000 CR4: 00000000001406f0 Call Trace: kobject: 'loop5' (000000009a4a0383): fill_kobj_path: path = '/devices/virtual/block/loop5' rdma_resolve_ip+0x499/0x790 drivers/infiniband/core/addr.c:697 rdma_resolve_addr+0x2d6/0x2870 drivers/infiniband/core/cma.c:2992 kobject: 'loop3' (00000000f158c859): kobject_uevent_env kobject: 'loop3' (00000000f158c859): fill_kobj_path: path = '/devices/virtual/block/loop3' ucma_resolve_ip+0x242/0x2a0 drivers/infiniband/core/ucma.c:713 ucma_write+0x336/0x420 drivers/infiniband/core/ucma.c:1686 __vfs_write+0x119/0x9f0 fs/read_write.c:485 kobject: 'loop2' (00000000ed1b199d): kobject_uevent_env vfs_write+0x1fc/0x560 fs/read_write.c:549 kobject: 'loop2' (00000000ed1b199d): fill_kobj_path: path = '/devices/virtual/block/loop2' ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fefce9c9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fefce9ca6d4 RCX: 0000000000457679 RDX: 0000000000000048 RSI: 0000000020000100 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d8a48 R14: 00000000004cb698 R15: 0000000000000000 Modules linked in: ---[ end trace 416e29924dbdc1a0 ]--- RIP: 0010:copy_src_l2_addr drivers/infiniband/core/addr.c:489 [inline] RIP: 0010:rdma_set_src_addr_rcu drivers/infiniband/core/addr.c:518 [inline] RIP: 0010:addr_resolve+0x7c4/0x1c90 drivers/infiniband/core/addr.c:593 Code: 0f 84 dd 01 00 00 e8 9b 6c e9 fb 48 8b 85 d8 fd ff ff 48 8d b8 54 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 24 kobject: 'loop5' (000000009a4a0383): kobject_uevent_env kobject: 'loop5' (000000009a4a0383): fill_kobj_path: path = '/devices/virtual/block/loop5' RSP: 0018:ffff8801c863f360 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801c863f578 RCX: ffffc90003e76000 RDX: 000000000000003e RSI: ffffffff8593e355 RDI: 00000000000001f1 RBP: ffff8801c863f5a0 R08: ffff8801d95722c0 R09: ffffed003b585b57 R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: ffff8801d78a1560 R13: 0000000000000001 R14: 000000000000000a R15: 0000000000000000 FS: 00007fefce9ca700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffef CR3: 00000001d370a000 CR4: 00000000001406f0 --- 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#bug-status-tracking for how to communicate with syzbot.