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_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 60F2AC433E0 for ; Thu, 9 Jul 2020 09:45:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36EE6206E2 for ; Thu, 9 Jul 2020 09:45:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726687AbgGIJpW (ORCPT ); Thu, 9 Jul 2020 05:45:22 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:52220 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726315AbgGIJpV (ORCPT ); Thu, 9 Jul 2020 05:45:21 -0400 Received: by mail-il1-f198.google.com with SMTP id s137so900863ilc.18 for ; Thu, 09 Jul 2020 02:45:20 -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=oLKGElfUNJ8ohVHuma0T7moqJ7X4ZlGuJjco+f1OcMI=; b=sWGNMaLWyip/uLHhMaWW5Z0ZSyWXaC1pizI3Eq5aag5ako/HbF49QyKzlLV8HNIYog kPQoLO4yulPqKmW9s3Y2P63eDSkmncu0Wtcq4Jptja6i06WGSfMA5Y90hFeboqDQEzVo JtIy/lF+pU2/kkRKHMN3ZlqfFyPGFogB637JUa+LMx97sVk9g8lYAnsvLAgxOVQuxE6H FDcdJT3Q70ZEnJu75kHBOtGyPh29vbcNGjlXl0PTdVHyXGN8JPYe3fRqplUDcfqqN48O p3Bykgq+KffbWagkE1h0gTEYihrWYnsCtpjja7OX3n4PoqhQ5RGioqPkIt3f+ps31ppq rJuA== X-Gm-Message-State: AOAM533RdI4ASrpGPUFls8VCMWpFc3IM8TAqon3c7WXVvRGHY+mKwTQI BHR+rEIJnP8SxK42w3vIFWOvfYZ18MBolVBYI8C5+XKE0BX9 X-Google-Smtp-Source: ABdhPJxiJLLQYeRg3Nwupczld6I6/f+eHT4G1RUz5KWLRZnBhPT8EBaCRzLRRL/SvTgleHqT0vEJpv4k9KzhlbDs71NiuSa6iO75 MIME-Version: 1.0 X-Received: by 2002:a05:6602:2f0f:: with SMTP id q15mr41784349iow.23.1594287920390; Thu, 09 Jul 2020 02:45:20 -0700 (PDT) Date: Thu, 09 Jul 2020 02:45:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002a265205a9ff15e3@google.com> Subject: BUG: stack guard page was hit in mark_held_locks From: syzbot To: linux-kernel@vger.kernel.org, mingo@redhat.com, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" 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: 9e50b94b Add linux-next specific files for 20200703 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1051ee8f100000 kernel config: https://syzkaller.appspot.com/x/.config?x=f99cc0faa1476ed6 dashboard link: https://syzkaller.appspot.com/bug?extid=c66218bec77a89793c66 compiler: gcc (GCC) 10.1.0-syz 20200507 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+c66218bec77a89793c66@syzkaller.appspotmail.com BUG: stack guard page was hit at 00000000d2019c30 (stack is 0000000006f487e0..0000000048f31ef3) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7063 Comm: syz-executor.3 Not tainted 5.8.0-rc3-next-20200703-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_held_locks+0xa/0xe0 kernel/locking/lockdep.c:3593 Code: 8a e8 6a dd 59 00 e9 db f1 ff ff 48 c7 c7 a0 51 92 8c e8 59 dd 59 00 e9 02 f2 ff ff 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df <41> 56 41 55 41 54 49 89 fc 48 81 c7 d0 08 00 00 48 89 fa 55 89 f5 RSP: 0018:ffffc90004cc0000 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88805638c240 RBP: ffff88805638c240 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff81340ba2 R14: 0000000000000200 R15: ffff88808fe4e780 FS: 00000000025e3940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004cbfff8 CR3: 0000000056360000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __trace_hardirqs_on_caller kernel/locking/lockdep.c:3627 [inline] lockdep_hardirqs_on_prepare+0x1bc/0x590 kernel/locking/lockdep.c:3686 trace_hardirqs_on+0x5f/0x220 kernel/trace/trace_preemptirq.c:49 do_user_addr_fault+0x792/0xd00 arch/x86/mm/fault.c:1196 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 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 RSP: 0018:ffffc90004cc01a8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff839880cb RDI: 0000000000000001 RBP: ffffffff810078f7 R08: ffffffff83af6ae0 R09: ffffc90004cc016f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88808fe4e780 search_module_extables+0xce/0x100 kernel/module.c:4422 search_exception_tables+0x42/0x50 kernel/extable.c:59 do_user_addr_fault+0xa59/0xd00 arch/x86/mm/fault.c:1237 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 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 RSP: 0018:ffffc90004cc0338 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff839880cb RDI: 0000000000000001 RBP: ffffffff810078f7 R08: ffffffff83af6ae0 R09: ffffc90004cc02ff R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88808fe4e780 search_module_extables+0xce/0x100 kernel/module.c:4422 search_exception_tables+0x42/0x50 kernel/extable.c:59 do_user_addr_fault+0xa59/0xd00 arch/x86/mm/fault.c:1237 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 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 RSP: 0018:ffffc90004cc04c8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff839880cb RDI: 0000000000000001 RBP: ffffffff810078f7 R08: ffffffff83af6ae0 R09: ffffc90004cc048f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88808fe4e780 search_module_extables+0xce/0x100 kernel/module.c:4422 search_exception_tables+0x42/0x50 kernel/extable.c:59 do_user_addr_fault+0xa59/0xd00 arch/x86/mm/fault.c:1237 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 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 RSP: 0018:ffffc90004cc0658 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff839880cb RDI: 0000000000000001 RBP: ffffffff810078f7 R08: ffffffff83af6ae0 R09: ffffc90004cc061f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88808fe4e780 search_module_extables+0xce/0x100 kernel/module.c:4422 search_exception_tables+0x42/0x50 kernel/extable.c:59 do_user_addr_fault+0xa59/0xd00 arch/x86/mm/fault.c:1237 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 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 RSP: 0018:ffffc90004cc07e8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff839880cb RDI: 0000000000000001 RBP: ffffffff810078f7 R08: ffffffff83af6ae0 R09: ffffc90004cc07af R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88808fe4e780 search_module_extables+0xce/0x100 kernel/module.c:4422 search_exception_tables+0x42/0x50 kernel/extable.c:59 do_user_addr_fault+0xa59/0xd00 arch/x86/mm/fault.c:1237 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 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 RSP: 0018:ffffc90004cc0978 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff839880cb RDI: 0000000000000001 RBP: ffffffff810078f7 R08: ffffffff83af6ae0 R09: ffffc90004cc093f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88808fe4e780 search_module_extables+0xce/0x100 kernel/module.c:4422 search_exception_tables+0x42/0x50 kernel/extable.c:59 do_user_addr_fault+0xa59/0xd00 arch/x86/mm/fault.c:1237 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 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 RSP: 0018:ffffc90004cc0b08 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff839880cb RDI: 0000000000000001 RBP: ffffffff810078f7 R08: ffffffff83af6ae0 R09: ffffc90004cc0acf R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88808fe4e780 search_module_extables+0xce/0x100 kernel/module.c:4422 search_exception_tables+0x42/0x50 kernel/extable.c:59 do_user_addr_fault+0xa59/0xd00 arch/x86/mm/fault.c:1237 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40 Code: 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 00 00 00 00 00 00 00 00 00 00 < Lost 1355 message(s)! ---[ end trace 445352104cff919d ]--- RIP: 0010:mark_held_locks+0xa/0xe0 kernel/locking/lockdep.c:3593 Code: 8a e8 6a dd 59 00 e9 db f1 ff ff 48 c7 c7 a0 51 92 8c e8 59 dd 59 00 e9 02 f2 ff ff 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df <41> 56 41 55 41 54 49 89 fc 48 81 c7 d0 08 00 00 48 89 fa 55 89 f5 RSP: 0018:ffffc90004cc0000 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff88805638c240 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88805638c240 RBP: ffff88805638c240 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff81340ba2 R14: 0000000000000200 R15: ffff88808fe4e780 FS: 00000000025e3940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004cbfff8 CR3: 0000000056360000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug is generated by a bot. 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