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_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 B8B73C43381 for ; Mon, 11 Mar 2019 20:42:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8BBA62147C for ; Mon, 11 Mar 2019 20:42:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728062AbfCKUmI (ORCPT ); Mon, 11 Mar 2019 16:42:08 -0400 Received: from mail-it1-f199.google.com ([209.85.166.199]:52803 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726675AbfCKUmH (ORCPT ); Mon, 11 Mar 2019 16:42:07 -0400 Received: by mail-it1-f199.google.com with SMTP id z131so288246itb.2 for ; Mon, 11 Mar 2019 13:42:07 -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=bItM+VRk6jJF0KAwdaT1c7fAc/vef/B+nUNuBS5+Pws=; b=Fc21SwC/knBzttm6oOByAYNF+Yb6tL9aW3G65YSy2pi/+HwSPqhwPIreWPTg5cHzKn A289NEqx4Oni6F0vFZX6ryk4FGEKdIS9jCIP6qOSOLGKErjp3H9E5YeAhFHez45/UAKn GZTPsAT5pCV4427kBlJSgFmKOWDGbR2YykD2N9noc9xY+5MJUQUmvceZwxjKtTDK9cTO PAPoJiKPCV5VyNTXPx2rPM9B+i6PRh1fYWCcfQPltYqUUyrJfWdyc0IYqljCp9UkmHko PKHs6DAfa9gvdaJPF1BEYttBejMe4rsZ/v430U+QIwAtXf++XSG4HmlK+bqpoTBgnwYi uaqw== X-Gm-Message-State: APjAAAVR/qkckzTCAaIM7NTY4B1QKwK7QhtgmU1dHECGqYQjajne+kRn k+EJ9r4fZim4pgXAbFThds6mzHSvA9r50TYZyOrWj15HLwzI X-Google-Smtp-Source: APXvYqxbPIFr1Mfb5vjlLrjnAaO/Uk3TTLwwI3GHCJogGZoS8MRorcajooh7DH8IjMszM5kiN3kYiOQxFOdGwYpcKiGOAUyhdazG MIME-Version: 1.0 X-Received: by 2002:a24:37c6:: with SMTP id r189mr45971itr.13.1552336926731; Mon, 11 Mar 2019 13:42:06 -0700 (PDT) Date: Mon, 11 Mar 2019 13:42:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000016f7d40583d79bd9@google.com> Subject: WARNING: bad usercopy in fanotify_read From: syzbot To: akpm@linux-foundation.org, cai@lca.pw, crecklin@redhat.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, 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: 12ad143e Merge branch 'perf-urgent-for-linus' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12776f57200000 kernel config: https://syzkaller.appspot.com/x/.config?x=e9d91b7192a5e96e dashboard link: https://syzkaller.appspot.com/bug?extid=2c49971e251e36216d1f compiler: gcc (GCC) 9.0.0 20181231 (experimental) userspace arch: amd64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1287516f200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ee410b200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2c49971e251e36216d1f@syzkaller.appspotmail.com ------------[ cut here ]------------ Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLAB object 'fanotify_event' (offset 40, size 8)! WARNING: CPU: 1 PID: 7649 at mm/usercopy.c:78 usercopy_warn+0xeb/0x110 mm/usercopy.c:78 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7649 Comm: syz-executor381 Not tainted 5.0.0+ #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x45 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:usercopy_warn+0xeb/0x110 mm/usercopy.c:78 Code: c8 e8 d9 88 c0 ff 4c 8b 45 c0 4d 89 e9 4c 89 e1 48 8b 55 c8 41 57 48 89 de 48 c7 c7 e0 dc 74 87 ff 75 d0 41 56 e8 03 4b 93 ff <0f> 0b 48 83 c4 18 e9 46 ff ff ff 49 c7 c5 e0 da 74 87 4d 89 ee 4d RSP: 0018:ffff8880a417fb18 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffffff8774dca0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815ad7b6 RDI: ffffed101482ff55 RBP: ffff8880a417fb70 R08: ffff888088d78580 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8859408d R13: ffffffff8775d500 R14: ffffffff8774db20 R15: 0000000000000008 __check_heap_object+0x88/0xb3 mm/slab.c:4453 check_heap_object mm/usercopy.c:238 [inline] __check_object_size mm/usercopy.c:284 [inline] __check_object_size+0x342/0x42f mm/usercopy.c:254 check_object_size include/linux/thread_info.h:119 [inline] check_copy_size include/linux/thread_info.h:150 [inline] copy_to_user include/linux/uaccess.h:151 [inline] copy_fid_to_user fs/notify/fanotify/fanotify_user.c:236 [inline] copy_event_to_user fs/notify/fanotify/fanotify_user.c:294 [inline] fanotify_read+0xde0/0x1430 fs/notify/fanotify/fanotify_user.c:362 __vfs_read+0x8d/0x110 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0xea/0x1f0 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4456b9 Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb296f31db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004456b9 RDX: 000000000000006b RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c R13: 00007ffd8eb3d16f R14: 00007fb296f329c0 R15: 20c49ba5e353f7cf 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#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches 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_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 19839C4360F for ; Mon, 11 Mar 2019 20:42:10 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B71A7214D8 for ; Mon, 11 Mar 2019 20:42:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B71A7214D8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1E3478E0003; Mon, 11 Mar 2019 16:42:09 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1916E8E0002; Mon, 11 Mar 2019 16:42:09 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0A8A18E0003; Mon, 11 Mar 2019 16:42:09 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-it1-f197.google.com (mail-it1-f197.google.com [209.85.166.197]) by kanga.kvack.org (Postfix) with ESMTP id D72508E0002 for ; Mon, 11 Mar 2019 16:42:08 -0400 (EDT) Received: by mail-it1-f197.google.com with SMTP id x87so448517ita.1 for ; Mon, 11 Mar 2019 13:42:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:mime-version :date:message-id:subject:from:to; bh=bItM+VRk6jJF0KAwdaT1c7fAc/vef/B+nUNuBS5+Pws=; b=gheqdhKcWfu8AQJqA87Byy3q8nk8Tx9+FvzxcnQS+GgL7DIKAVdDV7AGiMFtan1kh9 1ycCZbjX/Vzv/Wo085zmvx2HoCgDAxa8nC5FugRJxzENLwdbB3dO0BFEgzZ2m9LgPJV0 jxe4PfB6A944/aFj4rc5fKxAL3H+ZJS96/Q8ZGDexsxORq+WMwIYaRVQNu8PEwog0M+/ RZLFX3pky/xOT2iouvX9e1K8yFFh23m0SDdODF0FiJbKLRQAVJKNlgns8pvllNondqyS BJLtVWtZnjCIG9FY149ape0fN4J5IzjYK6OPXpzhcn+XEJhwyzMYDSFV77pFHtxPbHeR ntcQ== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of 3hsigxakbalmlrsdteexktiibw.zhhzexnlxkvhgmxgm.vhf@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3HsiGXAkbALMlrsdTeeXkTiibW.ZhhZeXnlXkVhgmXgm.Vhf@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Gm-Message-State: APjAAAVg910zMpQi2ipojUg3q8BUP2VluZN6MRin1R83yJt+w8PpNgzh xindh2KCVIaPs7Hks+ShRZVfPdVJfrmthMVWeHIvQNt9YTbqq2WA9Ojz28jdq8iocCU6deHCzDH jALVjwp3V3357aQVOUzaTRfdoP5NQIoXS4Su6VClfIZ+by3/h+N6u6fOKt8VEFhKfeEsIpohwJc 9k0RyHADmeKQQdY0Y2eT5oJpr4vMVR9Jq3MJhhW5x4JlnlbBkiD8FmAeHJChTAcS0r6NIumF0Z/ G6R4FR5oufOD5bHep9NynTO5h6ojEfkOoHsHU6djGPboeJsv1RmqJexKMB0NsjOuch07aFQfCtq dT+WwI1oxU0YJlwHqEhCOtupMo28T9X5uCt2ZPf3eeeXDDWHz7K345JbEuLyl0I1+V19YeNR2w= = X-Received: by 2002:a6b:4108:: with SMTP id n8mr18030028ioa.168.1552336928544; Mon, 11 Mar 2019 13:42:08 -0700 (PDT) X-Received: by 2002:a6b:4108:: with SMTP id n8mr18029961ioa.168.1552336927096; Mon, 11 Mar 2019 13:42:07 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1552336927; cv=none; d=google.com; s=arc-20160816; b=yDaONjlKyXntQHRV06sYKBoZQaA14PRHzE2786Pkt76f9vmKTrG8G0WrWPfuVFx01X 5bgnUKTfmBQZmcxZN843Yse9QHU+nvH4L2dQw4cS8NEu+r/vht4m2H3+X7azBObWJg3M 76n6X+0RoLn5kmSVNApxQ4wfeJlg6EGdmHQvPaaVtoIv5RyRYL9pOzwO3e4G9+4JR8GX XKO7614BzAXQY2TBdk/onbgoZT5G+ClZ3lgxYLqFnmfg9qKUpbR2cmwhRM8V8Amh0n7p aTO3UOLuvEfynDeEGcxsPuQRsvGP3wWTFz2R/uodMiq+Bw2TaVShO7TJnh+3HO1W9HQ5 7JUA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=to:from:subject:message-id:date:mime-version; bh=bItM+VRk6jJF0KAwdaT1c7fAc/vef/B+nUNuBS5+Pws=; b=PZohYJWB4szuKgXiSiqN+ZrD7J7qBSKjLcl/U3M0kC+Zip3tyyrWjyTNvoEObZfltY 0f3ldI4WCAj93xMgAt5lIwdpKnTi5FnchEY5LqBHPJtG63vrNVZgGHFZke1rOde3ZlrS xvNJ+BnAnv7Ir0bQTT7Xk1viQgkJJ+fJq9bvRf5UI3jS0cFmou0MHnMXlCEUN0jTzTN1 AnhR7qPsw9pOyaZTUFNJ3GZ7fOyxPe31iX4eqrGe/GQW/XC03DYCqjuUU5EKqQ7waGY5 wSbianb0qWI/ywlIaNyOKad1EoydfdWy5IwYN0l1Id6GnWcwSdi+yBNEzUYdRuge/qFb o7qQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of 3hsigxakbalmlrsdteexktiibw.zhhzexnlxkvhgmxgm.vhf@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3HsiGXAkbALMlrsdTeeXkTiibW.ZhhZeXnlXkVhgmXgm.Vhf@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: from mail-sor-f69.google.com (mail-sor-f69.google.com. [209.85.220.69]) by mx.google.com with SMTPS id h12sor482430itb.29.2019.03.11.13.42.06 for (Google Transport Security); Mon, 11 Mar 2019 13:42:07 -0700 (PDT) Received-SPF: pass (google.com: domain of 3hsigxakbalmlrsdteexktiibw.zhhzexnlxkvhgmxgm.vhf@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) client-ip=209.85.220.69; Authentication-Results: mx.google.com; spf=pass (google.com: domain of 3hsigxakbalmlrsdteexktiibw.zhhzexnlxkvhgmxgm.vhf@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3HsiGXAkbALMlrsdTeeXkTiibW.ZhhZeXnlXkVhgmXgm.Vhf@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Google-Smtp-Source: APXvYqxbPIFr1Mfb5vjlLrjnAaO/Uk3TTLwwI3GHCJogGZoS8MRorcajooh7DH8IjMszM5kiN3kYiOQxFOdGwYpcKiGOAUyhdazG MIME-Version: 1.0 X-Received: by 2002:a24:37c6:: with SMTP id r189mr45971itr.13.1552336926731; Mon, 11 Mar 2019 13:42:06 -0700 (PDT) Date: Mon, 11 Mar 2019 13:42:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000016f7d40583d79bd9@google.com> Subject: WARNING: bad usercopy in fanotify_read From: syzbot To: akpm@linux-foundation.org, cai@lca.pw, crecklin@redhat.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, syzbot found the following crash on: HEAD commit: 12ad143e Merge branch 'perf-urgent-for-linus' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12776f57200000 kernel config: https://syzkaller.appspot.com/x/.config?x=e9d91b7192a5e96e dashboard link: https://syzkaller.appspot.com/bug?extid=2c49971e251e36216d1f compiler: gcc (GCC) 9.0.0 20181231 (experimental) userspace arch: amd64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1287516f200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ee410b200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2c49971e251e36216d1f@syzkaller.appspotmail.com ------------[ cut here ]------------ Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLAB object 'fanotify_event' (offset 40, size 8)! WARNING: CPU: 1 PID: 7649 at mm/usercopy.c:78 usercopy_warn+0xeb/0x110 mm/usercopy.c:78 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7649 Comm: syz-executor381 Not tainted 5.0.0+ #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x45 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:usercopy_warn+0xeb/0x110 mm/usercopy.c:78 Code: c8 e8 d9 88 c0 ff 4c 8b 45 c0 4d 89 e9 4c 89 e1 48 8b 55 c8 41 57 48 89 de 48 c7 c7 e0 dc 74 87 ff 75 d0 41 56 e8 03 4b 93 ff <0f> 0b 48 83 c4 18 e9 46 ff ff ff 49 c7 c5 e0 da 74 87 4d 89 ee 4d RSP: 0018:ffff8880a417fb18 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffffff8774dca0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815ad7b6 RDI: ffffed101482ff55 RBP: ffff8880a417fb70 R08: ffff888088d78580 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8859408d R13: ffffffff8775d500 R14: ffffffff8774db20 R15: 0000000000000008 __check_heap_object+0x88/0xb3 mm/slab.c:4453 check_heap_object mm/usercopy.c:238 [inline] __check_object_size mm/usercopy.c:284 [inline] __check_object_size+0x342/0x42f mm/usercopy.c:254 check_object_size include/linux/thread_info.h:119 [inline] check_copy_size include/linux/thread_info.h:150 [inline] copy_to_user include/linux/uaccess.h:151 [inline] copy_fid_to_user fs/notify/fanotify/fanotify_user.c:236 [inline] copy_event_to_user fs/notify/fanotify/fanotify_user.c:294 [inline] fanotify_read+0xde0/0x1430 fs/notify/fanotify/fanotify_user.c:362 __vfs_read+0x8d/0x110 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0xea/0x1f0 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4456b9 Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb296f31db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004456b9 RDX: 000000000000006b RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c R13: 00007ffd8eb3d16f R14: 00007fb296f329c0 R15: 20c49ba5e353f7cf 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#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches