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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 D2CDAC1975A for ; Thu, 12 Mar 2020 06:37:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C44AE20575 for ; Thu, 12 Mar 2020 06:37:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387920AbgCLGhO (ORCPT ); Thu, 12 Mar 2020 02:37:14 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:42967 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387889AbgCLGhO (ORCPT ); Thu, 12 Mar 2020 02:37:14 -0400 Received: by mail-il1-f199.google.com with SMTP id j88so3212649ilg.9 for ; Wed, 11 Mar 2020 23:37:13 -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=FuH0nsCbwe86/j2RoJ1s3qJai4VV2bvq/TdtvNazlJE=; b=GQMr7i36+P7sFWEVrwCqQNjpVjXRnSxs43onVz9xiCNFoVb8woSStKmUfFKUyisQHG TsD4SIvWR2SICxzJIf10Lr6shDB2KXmOTHucXpDTXKklUwKIyIXavXlNEJkQYH7Fv9qH NchoUAAPPNGSMqlcyn+toJOvaeQx4qiZTSgiCzi4qSL3j8YCdjOBqDa9HbTCVJmjemzm ITdeLQmyr3QZgg8bjRRp7w/J7MBGFdpXhcFRzvKgrjMZbnq64cyh4LaVeb+Sx3BbIncR Layb9N/CEbYtCSrttPIXy6k/3AEHMUjT1Ne0l1B71CQkRb9NH2RrzY/bi/qpQJplqEBM YK5w== X-Gm-Message-State: ANhLgQ0I+CnXwSfe6r6gNU+spXg8UzXCxouCV205QWyKSwVxWLxczeIX /Dveh4puH3te++0yDpCXKFmx66CvarYko0kIbeJJN/nJGceZ X-Google-Smtp-Source: ADFU+vvZFSVb32AaAPGQNJt0QTHRGIRHmGWOfnZ9CqGWioVTITgpF3zUSoTuKs+f9tVy8KMCaJEqIWr57Fyf8zqGAot/tm+pq3Nn MIME-Version: 1.0 X-Received: by 2002:a6b:8ec2:: with SMTP id q185mr6112676iod.180.1583995032813; Wed, 11 Mar 2020 23:37:12 -0700 (PDT) Date: Wed, 11 Mar 2020 23:37:12 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000041c6a905a0a295ef@google.com> Subject: WARNING: ODEBUG bug in remove_client_context From: syzbot To: dledford@redhat.com, jgg@ziepe.ca, kamalheib1@gmail.com, 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" Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 61a09258 Merge tag 'for-linus' of git://git.kernel.org/pub.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10a6d70de00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7aef917d2e37d731 dashboard link: https://syzkaller.appspot.com/bug?extid=c3b8c2a85d37162cc6ab compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) 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+c3b8c2a85d37162cc6ab@syzkaller.appspotmail.com ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: work_struct hint: smc_ib_port_event_work+0x0/0x340 net/smc/smc_ib.c:523 WARNING: CPU: 0 PID: 298 at lib/debugobjects.c:488 debug_print_object lib/debugobjects.c:485 [inline] WARNING: CPU: 0 PID: 298 at lib/debugobjects.c:488 __debug_check_no_obj_freed lib/debugobjects.c:967 [inline] WARNING: CPU: 0 PID: 298 at lib/debugobjects.c:488 debug_check_no_obj_freed+0x45c/0x640 lib/debugobjects.c:998 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 298 Comm: kworker/u4:5 Not tainted 5.6.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound ib_unregister_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1e9/0x30e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1ac/0x2d0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0xca/0x1c0 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:debug_print_object lib/debugobjects.c:485 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:967 [inline] RIP: 0010:debug_check_no_obj_freed+0x45c/0x640 lib/debugobjects.c:998 Code: 74 08 4c 89 f7 e8 64 26 18 fe 4d 8b 06 48 c7 c7 13 08 d1 88 48 c7 c6 cf f8 ce 88 48 89 da 89 e9 4d 89 f9 31 c0 e8 14 c0 ae fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 56 28 b1 05 48 8b 5c 24 RSP: 0018:ffffc90001e07b78 EFLAGS: 00010046 RAX: 4ee5a22e59a59c00 RBX: ffffffff88d4e56a RCX: ffff8880a8a14440 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff815e16e6 R09: ffffed1015d04592 R10: ffffed1015d04592 R11: 0000000000000000 R12: ffff88809325f864 R13: ffffffff8b558e00 R14: ffffffff890d13a0 R15: ffffffff87bf6590 kfree+0xfc/0x220 mm/slab.c:3756 remove_client_context+0xb3/0x1e0 drivers/infiniband/core/device.c:724 disable_device+0xec/0x2e0 drivers/infiniband/core/device.c:1268 __ib_unregister_device+0x6c/0x160 drivers/infiniband/core/device.c:1435 ib_unregister_work+0x15/0x30 drivers/infiniband/core/device.c:1545 process_one_work+0x76e/0xfd0 kernel/workqueue.c:2264 worker_thread+0xa7f/0x1450 kernel/workqueue.c:2410 kthread+0x317/0x340 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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.