From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8DEF618DB37 for ; Mon, 9 Mar 2026 03:18:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773026306; cv=none; b=LkjQu4MvQvEtS1DuQWZuNFFQ8ZZ4krgdst6xzUVtrdd5O5VBkbqwPQmhO+2s7TAQIMUpEQwcekIMiT8k0/uOFYay+T3/33GXIwRJ0ByTPYr9XP0VPwIMvV3xiHpo+ojWkz+SBrZI2AD/UWnLj1ZeLxnXGrFI7vc+lQK1JCneD44= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773026306; c=relaxed/simple; bh=ZgUd83HYbXnzE4yuTbBpQMYTVblYpQTEFj/3IWHq7bM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=tG9+umG/o3OWS9yGijKsSCxtSaqydMayCcYTLbogU4j3haKpy8x4YrKALnm3uM/sX5PExx8tY2WmuaWGxWlKAcMFR7moBO+ITreL0YWAJgxUgBvTlBqpC6a58YxIE+6/c04W9/EjdjsPoY2nQcr4W3VizXfoaI4V37zajNzayL0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f70.google.com with SMTP id 006d021491bc7-67bb58103daso2728768eaf.2 for ; Sun, 08 Mar 2026 20:18:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773026304; x=1773631104; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=GD8bcTWofBjnYQ3aQVNTHpJCJ5pB4DTaYb3sbZFn2BU=; b=b4dF2GIrZEi3a5Kk0u5CbM4P9evY2viyXCSZ1K4ZmRqhfAtH8Ha6uXkdxbaXrGRkeN 3A1D8X+7vhOSI+4wj99vLjPgcpyfZCJshbJqx09CVTha2hFS+QS5fK3XFTCuCg2b9XH6 jYM6jLBGP0eTM4uDuFc1gSY6D8vzqCVKVZwgeqOB6jSjOWeo4yrvdIb2AV/0mggbmE5W XoOzG1yuvjZj1yNH+IoQq0+Vcnx62ymByTsv7NUgF3oDyv7FMbCLy/jifkWGgI8mGkl5 J8zucLghU0n7SWTbFyoET8SnTaK52vVaQU1ahcDr2rt5ugO617Ule+vSgXWps2U/nJRv XWCw== X-Forwarded-Encrypted: i=1; AJvYcCVUdfR+66yX/dDjSKAG4ub7DyPVYJcHYEZmBtfSf4yrPOibXFw2cBlHex25Gk8BVHDDVgbnVlMd04HYzUz/h/ksHrU=@vger.kernel.org X-Gm-Message-State: AOJu0YwLnMNv2x0oUCrcqRNtOGNTIjirzxPh2Pyo5XTK3rUhfqZsEqdT 9wgyaFHEiEuXTtqc4aji1aw1Buv9mhUQlcKXVJV7VEUKpJWSTgYCXVV+UWKdP9ct5zxKt0dYkxY VNfUnoXQjGnA6se/h/2H6McbzjTSQI0fEHv/HdvZOcB+NJZXo322vFk52s1c= Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:f022:b0:67b:b77d:70aa with SMTP id 006d021491bc7-67bb77d74ecmr178913eaf.15.1773026304519; Sun, 08 Mar 2026 20:18:24 -0700 (PDT) Date: Sun, 08 Mar 2026 20:18:24 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69ae3c00.050a0220.310d8.0013.GAE@google.com> Subject: [syzbot] [trace?] WARNING in ring_buffer_nr_dirty_pages From: syzbot To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com, mhiramat@kernel.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot found the following issue on: HEAD commit: ecc64d2dc9ff Merge tag 'sysctl-7.00-fixes-rc3' of git://gi.= . git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D109bf0ba580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D163cf0fb07ea84d= 3 dashboard link: https://syzkaller.appspot.com/bug?extid=3D855a87cfc76c52ce7= a59 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Deb= ian) 2.44 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/23b82e01c157/disk-= ecc64d2d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e98b1b4abbdf/vmlinux-= ecc64d2d.xz kernel image: https://storage.googleapis.com/syzbot-assets/41e18c482bbb/bzI= mage-ecc64d2d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+855a87cfc76c52ce7a59@syzkaller.appspotmail.com Invalid ELF header magic: !=3D =7FELF ------------[ cut here ]------------ read > cnt + 1 WARNING: kernel/trace/ring_buffer.c:788 at ring_buffer_nr_dirty_pages+0x207= /0x290 kernel/trace/ring_buffer.c:788, CPU#1: syz.1.4985/28848 Modules linked in: CPU: 1 UID: 0 PID: 28848 Comm: syz.1.4985 Tainted: G U L syz= kaller #0 PREEMPT(full)=20 Tainted: [U]=3DUSER, [L]=3DSOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Goo= gle 02/12/2026 RIP: 0010:ring_buffer_nr_dirty_pages+0x207/0x290 kernel/trace/ring_buffer.c= :788 Code: 83 c3 01 48 89 ee 48 89 df e8 95 24 fc ff 48 39 eb 72 11 31 db eb cc = e8 67 2a fc ff 90 0f 0b 90 31 db eb bf e8 5a 2a fc ff 90 <0f> 0b 90 31 db e= b b2 4c 89 e7 e8 4a af 67 00 e9 f8 fe ff ff 4c 89 RSP: 0018:ffffc900052875c0 EFLAGS: 00010087 RAX: 000000000000014d RBX: 0000000000000001 RCX: ffffc90007725000 RDX: 0000000000080000 RSI: ffffffff820be6e6 RDI: ffff88805e5f0000 RBP: 0000000000000002 R08: 0000000000000006 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88813fea5000 R14: ffff88813fe5a4b0 R15: ffff88813fea5000 FS: 00007f8292df66c0(0000) GS:ffff88812444e000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e2ebff8 CR3: 00000000621de000 CR4: 00000000003526f0 Call Trace: full_hit kernel/trace/ring_buffer.c:810 [inline] rb_watermark_hit+0x1f5/0x300 kernel/trace/ring_buffer.c:907 ring_buffer_poll_wait+0x2b2/0x490 kernel/trace/ring_buffer.c:1064 trace_poll kernel/trace/trace.c:5895 [inline] tracing_buffers_poll+0x1cf/0x250 kernel/trace/trace.c:7841 vfs_poll include/linux/poll.h:82 [inline] select_poll_one fs/select.c:480 [inline] do_select+0xd54/0x1850 fs/select.c:536 core_sys_select+0x55b/0xbb0 fs/select.c:677 kern_select+0x20c/0x270 fs/select.c:718 __do_sys_select fs/select.c:725 [inline] __se_sys_select fs/select.c:722 [inline] __x64_sys_select+0xbd/0x160 fs/select.c:722 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8294b9c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 f= f 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8292df6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000017 RAX: ffffffffffffffda RBX: 00007f8294e15fa0 RCX: 00007f8294b9c799 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000e RBP: 00007f8294c32bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 00002000000002c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8294e16038 R14: 00007f8294e15fa0 R15: 00007ffe7dd14a88 --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup