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 161C2C3A5A5 for ; Tue, 3 Sep 2019 16:38:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EC5CF215EA for ; Tue, 3 Sep 2019 16:38:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731193AbfICQiL (ORCPT ); Tue, 3 Sep 2019 12:38:11 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:49717 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730418AbfICQiI (ORCPT ); Tue, 3 Sep 2019 12:38:08 -0400 Received: by mail-io1-f70.google.com with SMTP id j23so13053930iog.16 for ; Tue, 03 Sep 2019 09:38:08 -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=6951hsx/JflbcnHJ38448inFnROH/ckXY2OtbJ5vDFE=; b=V/+OcJ7xIiKib0cDEqjNC0mE+wmyWeO7yI/F2gBrkg7oxniUYfi7MMcxbnpM4vcwMM r+QmqlO+VAMEOW9nBu22VIwONJJYUs6IHlWFWX8eEH1w323suubH+w4WytyLDCa6UecK aVznF6eaYo+EY9gtAXj0iE7Ah+drG8dIGyOkUBXuvfMmiduhxPGKagQ5zAZV45W+qsaW qCU8MSH2KasuGfDF72JKmkbPKqPmdr0VCyXyxvdOiYhrQ+dlXH20kDL+2z+Jzr/TC8KK HiWek/AgGtFkZAiwbzl/8aKKzKq+haz8YB67IfQMjYVthT4MDX0NbE0reMN3CEOgjbKf 09UA== X-Gm-Message-State: APjAAAWohz70bWh01ZMm+31xCdeyKkzCJNskMHFA4bCDyxj3gdU+2RQh zy5ZpxJmVMVd65BEV04hnYrDhmqkjfJbzrIQlL9/36KHGTXE X-Google-Smtp-Source: APXvYqwrU6A8cwbVDiefeDbG61BgxpLVwJThXBg0CYPw9OE/gQx+fwY2U7wsQYTgYqSjABN+gvG8aW/NDEw/iSL4rXBccyWNsVTY MIME-Version: 1.0 X-Received: by 2002:a6b:f307:: with SMTP id m7mr13064789ioh.84.1567528687722; Tue, 03 Sep 2019 09:38:07 -0700 (PDT) Date: Tue, 03 Sep 2019 09:38:07 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009b6b880591a8b697@google.com> Subject: WARNING in posix_cpu_timer_del (3) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de 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: 6d028043 Add linux-next specific files for 20190830 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=179e59de600000 kernel config: https://syzkaller.appspot.com/x/.config?x=82a6bec43ab0cb69 dashboard link: https://syzkaller.appspot.com/bug?extid=dabf3198a30ed5a2158f compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13bb4546600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13af4356600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+dabf3198a30ed5a2158f@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9805 at kernel/time/posix-cpu-timers.c:401 posix_cpu_timer_del+0x2f0/0x3b0 kernel/time/posix-cpu-timers.c:401 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9805 Comm: syz-executor380 Not tainted 5.3.0-rc6-next-20190830 #75 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+0x2dc/0x755 kernel/panic.c:220 __warn.cold+0x2f/0x3c kernel/panic.c:581 report_bug+0x289/0x300 lib/bug.c:195 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+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:posix_cpu_timer_del+0x2f0/0x3b0 kernel/time/posix-cpu-timers.c:401 Code: 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 83 bb c8 00 00 00 00 74 16 e8 00 58 0d 00 <0f> 0b e9 87 fe ff ff e8 c4 38 48 00 e9 dd fd ff ff e8 ea 57 0d 00 RSP: 0018:ffff88809ac87a30 EFLAGS: 00010093 RAX: ffff888090a6e0c0 RBX: ffff88809ae762e0 RCX: 1ffff1101214dd2a RDX: 0000000000000000 RSI: ffffffff8164fe10 RDI: ffff88809ae763a8 RBP: ffff88809ac87ac0 R08: 0000000000000002 R09: ffff888090a6e958 R10: fffffbfff138aef8 R11: ffffffff89c577c7 R12: ffff88809b326100 R13: 1ffff11013590f47 R14: ffff88809ac87a98 R15: ffff88809ae76338 timer_delete_hook kernel/time/posix-timers.c:978 [inline] itimer_delete kernel/time/posix-timers.c:1021 [inline] exit_itimers+0xdb/0x2e0 kernel/time/posix-timers.c:1041 do_exit+0x1980/0x2e60 kernel/exit.c:853 do_group_exit+0x135/0x360 kernel/exit.c:983 get_signal+0x47c/0x2500 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x65f/0x760 arch/x86/entry/common.c:300 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x446679 Code: e8 5c b3 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 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffff909e168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 0000000000017a92 RCX: 0000000000446679 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc2c RBP: 00000000006dbc2c R08: 000000037ffffa00 R09: 000000037ffffa00 R10: 00007ffff909e180 R11: 0000000000000246 R12: 00000000006dbc20 R13: 0000000000000000 R14: 000000000000002d R15: 20c49ba5e353f7cf Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. 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