From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) (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 DEFAE847B for ; Thu, 23 May 2024 02:27:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716431246; cv=none; b=YuulXEXCQIpToEz3B04xknI9kY+6xfqp8osW/cM7l+LKP25eDuasGqH2uQer+tOALi/SQnOHYFwzNc51uR0YMps5RXh9XtcipL2pW7jnTPBX/0IU+6g68SoygqX1B7AcvaX/V5zJwS0+hyigLTV7ae3MTYCH0bQxM88tFnV8xRo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716431246; c=relaxed/simple; bh=bSFp0V3O/8ow+t83Egk4O9tbQmALaBMG+AVxfZAfrD4=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=KrRYJ1siz/0KQ8LVJ3d6MgC4fBlhF8ePs4EtIQPKS7O+/N1WcxE1Ynign42pb71Ufy1fKWzmLTmNRSM4uEWdEzow0vxCN4ojvIxURsZexkyaFpSUdH7umQP+FhpBawtLWq9xsA9ChOVjhzFOmXWfvUKTvme88UaBzToBXORAPOo= 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=209.85.166.77 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-io1-f77.google.com with SMTP id ca18e2360f4ac-7e1e409d1f4so117232739f.0 for ; Wed, 22 May 2024 19:27:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716431244; x=1717036044; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=rgJmmoVp+JrxU5ljaXxCBdzfp456SHHaXgodLVHwqLU=; b=vvhPBOTRwSScJKOF5zv1eXDVp7ZoXweMGBr1NRHqjoSqtOznhIxDH0dK9jxkfKAZbS X978/c+adDrOcj/faLn7g+4+Eu4S+2A+zZWhQKQ9mWE2bjoRW1v9uXyucTf8NlSrg81b eypvv8cYNTC/wkriZAFkLnkD/kD99o8nLwEw87dcksP+WRMx7KVXQO/FW0ATLkTpPrT/ aTMd+CZSAY0lar2F8GYa4cB8FY3SaLzmavQE/VZ9flBeB4tne9OWDKsLijj+sTHAjeyG 042RnSZtMJwxAUkjJbTgNfMDfzPpdGO0L07QMt3SdpqG+FAsxXWWSWTAYX0blAwjlN+0 YnAQ== X-Forwarded-Encrypted: i=1; AJvYcCUEUkZckVPLLXzwinx7LuH3OO21iOE+lR+hcpK9UhuqsqOo8J7oLfnv8XgOxWdqx8j8b2wbuxVRcO4jwjL5nKys3RkCWF/y2W3btZfK X-Gm-Message-State: AOJu0YzlTpaaWq2fszCir6939Bi7h7+XAOZ+8lMy7H7jF5qzALeJ1mqA qJ/7RLbBWvYTxGTmu1H6uK4wpcBMEIttDIjRDNhXC3kpTQlfxKFkkdkYR8EA28m0d5ZPWMewnBE eX8O8BFIy4sBdH0bPLw589iOkI5J4ulE7TR10DPoGcfjoEIxjTYvOdJA= X-Google-Smtp-Source: AGHT+IGiLWtutli4ybjmH9BuUV3InSOSYt1Rcxi2bqzc28tMI8TpNlDUASjdVONvrYgZ0Btznzpv9gg592hcdjpmD0VCiri33Fi+ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2182:b0:369:f7ca:a361 with SMTP id e9e14a558f8ab-371f8f1cd31mr3282225ab.1.1716431243480; Wed, 22 May 2024 19:27:23 -0700 (PDT) Date: Wed, 22 May 2024 19:27:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008c9d27061915ca9c@google.com> Subject: [syzbot] [kernel?] WARNING in flush_cpu_slab From: syzbot To: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2a8120d7b482 Merge tag 's390-6.10-2' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17d42b0a980000 kernel config: https://syzkaller.appspot.com/x/.config?x=5dd4fde1337a9e18 dashboard link: https://syzkaller.appspot.com/bug?extid=50e25cfa4f917d41749f compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-2a8120d7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/78c72ae6bdaf/vmlinux-2a8120d7.xz kernel image: https://storage.googleapis.com/syzbot-assets/99dbb805b738/bzImage-2a8120d7.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+50e25cfa4f917d41749f@syzkaller.appspotmail.com ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(l->owner) WARNING: CPU: 3 PID: 5221 at include/linux/local_lock_internal.h:30 local_lock_acquire include/linux/local_lock_internal.h:30 [inline] WARNING: CPU: 3 PID: 5221 at include/linux/local_lock_internal.h:30 flush_slab mm/slub.c:3088 [inline] WARNING: CPU: 3 PID: 5221 at include/linux/local_lock_internal.h:30 flush_cpu_slab+0x37f/0x410 mm/slub.c:3146 Modules linked in: CPU: 3 PID: 5221 Comm: kworker/3:3 Not tainted 6.9.0-syzkaller-10713-g2a8120d7b482 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: slub_flushwq flush_cpu_slab RIP: 0010:local_lock_acquire include/linux/local_lock_internal.h:30 [inline] RIP: 0010:flush_slab mm/slub.c:3088 [inline] RIP: 0010:flush_cpu_slab+0x37f/0x410 mm/slub.c:3146 Code: ff e8 e5 b2 fc 08 e9 25 ff ff ff e8 db b2 fc 08 e9 46 ff ff ff 90 48 c7 c6 7f 68 37 8d 48 c7 c7 b6 33 37 8d e8 72 88 6f ff 90 <0f> 0b 90 90 e9 dd fe ff ff 90 48 c7 c6 88 68 37 8d 48 c7 c7 b6 33 RSP: 0018:ffffc90002b57c98 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffffe8ffac1021b0 RCX: ffffffff81510229 RDX: ffff88801bb7c880 RSI: ffffffff81510236 RDI: 0000000000000001 RBP: ffff88802790b540 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 000000002d2d2d2d R12: 0000000000000200 R13: ffffe8ffac1021d0 R14: 0000000000000000 R15: ffffc90002b57d80 FS: 0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000f73ffec2 CR3: 00000000268ca000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 --- 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