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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97E45C433EF for ; Tue, 26 Apr 2022 16:52:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353550AbiDZQ4C (ORCPT ); Tue, 26 Apr 2022 12:56:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353489AbiDZQzd (ORCPT ); Tue, 26 Apr 2022 12:55:33 -0400 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B6FD2409D for ; Tue, 26 Apr 2022 09:51:33 -0700 (PDT) Received: by mail-io1-f69.google.com with SMTP id b1-20020a05660214c100b006572ddc92f7so13455063iow.2 for ; Tue, 26 Apr 2022 09:51:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=S9x94AQu8d4JXk5DNNXWvFbZRbNhzXfzQ/V2yVrTFZI=; b=T6/arpAl1d41Iql48aT38IrNcMe7r3/Zboc/3To/Zt7dGSa3ppedkZrB3sysRqEDqY MjoT1s4rATmoiQBj18rqr1JUmwmhRighiyVWzuJzuNpdnBcirqux5rcw7p/0U0cB9713 foZH/8xevhD4gUriHgJVvaLHNWCB9HF6MC74NEIbrPZtmluGXC5QQxDwIVlZxE0CkiaU ikShBExRqCfym0ok1kgqhfC5nukD9jKvReF+lr4Muhv+fDSj0xBSfh+cA6tAtYHVua1Q Y0G8nWOKirOt+8K9ZF9dFrezObr+7CWaRnApbkIZFwXXiSDkzQD1hHTWL4T+1eI3YQ7r C6GA== X-Gm-Message-State: AOAM532gC5K5mnSKwJn6o14sJpMPT1A/WDcTYiaHvk5M/2mGErls26gL 3PtrZuZsIbmi79qIMNmQOTCSAbiAbvF0W5YCrloUwEi7OVY0 X-Google-Smtp-Source: ABdhPJweBUyIOvcW4iPBhWtjUxIeevUR7kNelZFMr3IQyIwGf5UW5QKspXnRzdYiIASV7TMyGwoEdpX06Vk73xAvfxVVHvEHKW90 MIME-Version: 1.0 X-Received: by 2002:a05:6638:4183:b0:32b:216:2ddb with SMTP id az3-20020a056638418300b0032b02162ddbmr2233250jab.101.1650991892436; Tue, 26 Apr 2022 09:51:32 -0700 (PDT) Date: Tue, 26 Apr 2022 09:51:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000469c2805dd9181e9@google.com> Subject: [syzbot] WARNING in ring_buffer_lock_reserve 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" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: c00c5e1d157b Merge tag 'ext4_for_linus_stable' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16c71798f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=d1843173f299d1e8 dashboard link: https://syzkaller.appspot.com/bug?extid=7cc6f78de62bf22bda9c compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7cc6f78de62bf22bda9c@syzkaller.appspotmail.com ------------[ cut here ]------------ Delta way too big! 8384096949562536641 ts=8384098609305280746 before=1659742744105 after=1659742744105 write stamp=8384098609305280746 WARNING: CPU: 0 PID: 19417 at kernel/trace/ring_buffer.c:2744 rb_check_timestamp+0x129/0x130 kernel/trace/ring_buffer.c:2734 Modules linked in: CPU: 0 PID: 19417 Comm: syz-executor.2 Tainted: G S 5.18.0-rc3-syzkaller-00190-gc00c5e1d157b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rb_check_timestamp+0x129/0x130 kernel/trace/ring_buffer.c:2734 Code: e8 91 8a 48 0f 44 e8 48 c7 c7 e0 ea 91 8a 48 8b 34 24 4c 89 fa 4c 89 e9 4d 89 f0 49 89 d9 31 c0 55 e8 5b 17 c6 ff 48 83 c4 08 <0f> 0b e9 f4 fe ff ff 55 41 57 41 56 41 55 41 54 53 48 83 ec 58 49 RSP: 0018:ffffc90002bef798 EFLAGS: 00010082 RAX: 45645b4ce4a40800 RBX: 745a4d43a97ce0ea RCX: 0000000000040000 RDX: ffffc9000bb08000 RSI: 000000000000adf6 RDI: 000000000000adf7 RBP: ffffffff8a91e8e0 R08: ffffffff816ac162 R09: ffffed1017344f24 R10: ffffed1017344f24 R11: 1ffff11017344f23 R12: ffff888011468930 R13: 0000018270606e29 R14: 0000018270606e29 R15: 745a4d43a97ce0ea FS: 00007ff57856c700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff57759d090 CR3: 0000000073001000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rb_add_timestamp+0x324/0x520 kernel/trace/ring_buffer.c:2772 rb_update_event kernel/trace/ring_buffer.c:2809 [inline] __rb_reserve_next kernel/trace/ring_buffer.c:3565 [inline] rb_reserve_next_event kernel/trace/ring_buffer.c:3635 [inline] ring_buffer_lock_reserve+0x10df/0x22a0 kernel/trace/ring_buffer.c:3694 __trace_buffer_lock_reserve kernel/trace/trace.c:949 [inline] trace_event_buffer_lock_reserve+0xd8/0x6a0 kernel/trace/trace.c:2821 trace_event_buffer_reserve+0x2ae/0x3d0 kernel/trace/trace_events.c:496 trace_event_raw_event_bpf_trace_printk+0xfd/0x210 kernel/trace/./bpf_trace.h:11 trace_bpf_trace_printk+0x1c8/0x210 kernel/trace/./bpf_trace.h:11 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline] bpf_trace_printk+0x194/0x200 kernel/trace/bpf_trace.c:371 bpf_prog_0605f9f479290f07+0x2f/0x33 bpf_dispatcher_nop_func include/linux/bpf.h:804 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2022 [inline] bpf_trace_run2+0x18a/0x320 kernel/trace/bpf_trace.c:2059 __bpf_trace_sys_exit+0x60/0x70 include/trace/events/syscalls.h:44 trace_sys_exit+0xb2/0xd0 include/trace/events/syscalls.h:44 syscall_exit_work+0x4a/0xe0 kernel/entry/common.c:245 syscall_exit_to_user_mode_prepare+0x62/0x80 kernel/entry/common.c:276 __syscall_exit_to_user_mode_work kernel/entry/common.c:281 [inline] syscall_exit_to_user_mode+0xa/0x70 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ff5774890e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff57856c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: 0000000000000004 RBX: 00007ff57759bf60 RCX: 00007ff5774890e9 RDX: 0000000000000010 RSI: 0000000020000180 RDI: 0000000000000011 RBP: 00007ff5774e308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5033831f R14: 00007ff57856c300 R15: 0000000000022000 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.