From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f77.google.com (mail-oa1-f77.google.com [209.85.160.77]) (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 23BD7324718 for ; Sat, 2 May 2026 12:20:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777724430; cv=none; b=lDBNHg+cdtSGcEk7/FHcIrM1XJ9nDboFpOeSa5bGgJNHIKo5a31m3ckF0fh50nKvAZrRFCyk6mTD8TktK/zYc/qrixHHfPSj/QyoQDdjJ4RybEQ2rBtt2MK7vo8lMVm2OJ2xPDHQkqWKKBm/AuQc7HGwA1Djwg6QHa/U/Ocro5A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777724430; c=relaxed/simple; bh=ve80Bt+PjVx/Yw2TVuNHlUhVCIcFVlnJdgpgF7sLDxI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ujtMY0Y/4mcyvFBv9GJCZomcSoz8ymO0z4GuMO0Lj6NJETX98tGAQw3PJ89r0L4dSk2N9bvoXQfVkf5IqVMa2F4nLGPN5uoKVFreqSzAWdk9uFQ0FbFgEw34ZiC6OKFEXT69bJ36aSpJ9FomSUUywnKBDviVxRFNGUspbbevRmw= 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=209.85.160.77 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-oa1-f77.google.com with SMTP id 586e51a60fabf-42c0b246c18so3170557fac.2 for ; Sat, 02 May 2026 05:20:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777724428; x=1778329228; 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=g8gpLaQScmNGj6F0EfSqXYadIGjIKRsZ0ouNxm0o6z0=; b=NVWttPFFMufyokLLPeAeZ9ybLTg4jqj00hJNyIMVvkVEMQMbkTVwsPYF4W5UrBgpQQ aKToVWxps2Sz3L7fBqnCKBOG/YbCfbY/Aos3Fjnyzud0CBpR7+eGkDdVDdMuocwgtThP 29Mb+23nr6UFtMrDN0aOpDX8h+DU7isMuBeOD54REsXALue+rhyPrevO/VpKGa3kD3tj PgTgJJrkCq2q/58MJ8hlTuHk3v/F7T9iaFJ5fQgWRDiYqU7+LyTKW3QqfssSLatN9RDN xnHIkuTitR3VC+GEn5jtrQnoVhpK0BkzIy7j7j05+XzbmWH9v7rJ836f41jbWkEfKU91 u+Aw== X-Gm-Message-State: AOJu0Yy3cghk7KEMrP5l08F7vtUf09FlxlXjv4VacFglNspVcI2dHq8n Gu9bBpdN2UiqTqMBtA1mDzxeFqFEpEMuPrYwxOBXcRNIQzVO8VAnp5QmgY98GjuSt0qvwqMI9XJ QctwFcdPBOgKidc99FgpumZbeVYHdyqtFF5yvgv6JwcHulGmx49zGu0HsZqlXrg== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1508:b0:696:2cb1:a005 with SMTP id 006d021491bc7-69697a07fafmr1155558eaf.25.1777724428163; Sat, 02 May 2026 05:20:28 -0700 (PDT) Date: Sat, 02 May 2026 05:20:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69f5ec0c.050a0220.312cd3.0023.GAE@google.com> Subject: [syzbot] [kernel?] WARNING in do_exit From: syzbot To: linux-kernel@vger.kernel.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: 3b3bea6d4b9c Merge tag 'cgroup-for-7.1-rc1-fixes' of git:/.= . git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D105a7236580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D59da38148f3a3d2= 4 dashboard link: https://syzkaller.appspot.com/bug?extid=3D8fdf0d8e10bdde1c2= e88 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 (non-bootable): https://storage.googleapis.com/syzbot-assets/d90= 0f083ada3/non_bootable_disk-3b3bea6d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9e011051a02c/vmlinux-= 3b3bea6d.xz kernel image: https://storage.googleapis.com/syzbot-assets/dd9d977be0e6/bzI= mage-3b3bea6d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+8fdf0d8e10bdde1c2e88@syzkaller.appspotmail.com WARNING: kernel/signal.c:2174 at do_notify_parent+0xea8/0x10b0 kernel/signa= l.c:2174, CPU#2: syz.2.2072/13056 Kernel panic - n=00o=00t sync=00i=00n=00g=00:=00 =00k=00e=00r=00n=00e=00l= =00:=00 =00panic_on_warn set ... Tainted: [L]=3DSOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16= .3-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 check_panic_on_warn kernel/panic.c:524 [inline] check_panic_on_warn.cold+0x19/0x34 kernel/panic.c:519 __warn.cold+0x191/0x328 kernel/panic.c:1103 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616 RSP: 0018:ffffc9000f407aa8 EFLAGS: 00010093 RDX: ffff88805386ca00 RSI: ffffffff81caad07 RDI: ffff88805386ca00 R10: 0000000000000080 R11: 0000000000000000 R12: 1ffff92001e80f58 exit_notify kernel/exit.c:757 [inline] do_exit+0x1b05/0x2a60 kernel/exit.c:987 get_signal+0x1ec7/0x21e0 kernel/signal.c:3037 asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:612 RSP: 002b:00002000000001e0 EFLAGS: 00010217 R13: 00007fcbfe616038 R14: 00007fcbfe615fa0 R15: 00007ffd58e78548 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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