From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) (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 26A12433BE for ; Tue, 9 Jul 2024 03:12:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720494742; cv=none; b=KgJNGOYvirUJCLwohS8IyoiWZhj7SfJtqCrJRJyUefctw2lm5v2x2xKs63wPkHa0aLfhsrjTkOzlwA2SyAtagU8KY2Auw4wZVRJIWHxIyKRWZOCN1GeTVSQBoNvCaEjy68OHYukdfOqDfi9TI6gWu79+tMEZDeeO03ggu1JdZwY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720494742; c=relaxed/simple; bh=XFZV0Qc4ElXWa6xsPTH1q6tmPFm4bZl/59yAA5SYUPo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=MnppUO3lDuyetjeSaEQJtTT8zuX5nMbmIgsi940lbPUfrj5wPuiYJ+YqvwBUrquKjmBFqGcJsTzwpwmBr6C+w7EcCed48ckCqblvslr7GYoUsm6AucxqXZh7+PgbLbJvisb4ZxER3fxNFaXVzwyfhCCW/bMH3qFLNrqGCORi7Fs= 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=209.85.166.71 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-f71.google.com with SMTP id ca18e2360f4ac-7f12ee1959cso590205039f.1 for ; Mon, 08 Jul 2024 20:12:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720494740; x=1721099540; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=iTcOd6S5hjqJaw4entfORyAfTyoeoPtGdQQtiW3Xu+0=; b=AOJj0ExQtFl5DHOIwCYNHGt4mdk80s1WJq51uBKHMutGJiXA41HpDgWI9RkZxg8Udq k7wm0zg7Qav+Iq4knvW2L397eNpBjtYAzsQXfEeBl67s0Hxc1b1CS/VIevf4zNxVr/yd csb0f4X4Y8vU5mWMo6c+Ie52xOsP1m6zC18PukOF46NHXVFF2hUtKP4XOzorhGjXiDbr jqKpKL4xAjXyrAdg2IE1hSzXbLwSY5FugwruJSJor00eVysM8bgtm5uWBJ7gSUgmxoQz CBRmg/kOhDLraRXWHObPnbV0YNQCzPA6exC/f2YstIkfBmL2VK/RQyD5jkRh+mfcuKOf 316g== X-Forwarded-Encrypted: i=1; AJvYcCV9ZWV9ZXv34OtiR0laYBtEHRhqiaJ/sKBGJV7GkmzYoqCxHn9ERaMLXpZNg992MFtLkvp7vcUfp5HFlmFXTVMEpIArcZ0NmpnKFg5k X-Gm-Message-State: AOJu0Yw8zMABxgNg3cDz+8LnoHlthXmu5D2w4R0GJX9qQiWIhCw9aHoO /uKGqfrep9mQXMFt58Zo0eZPXmJrN85iisonh3sQrbDKiRKgoeXjmrHiSRt6ZrhgOvJ5o1OvJrX t8i/6WkDBuAfIgKWb/wGoKWs4CmfTOrQ6oVutkQ7TSusI5Ih3Em+tmYY= X-Google-Smtp-Source: AGHT+IHCkPwdiq/I65r8mVNNcFB5ddKi+JZqFLSl5kiqL1VBKN+R733LItz1xqfogQGSn+L11xbxyKAqT0hOIRtszNm6L5WoOluE Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:2d85:b0:7fc:dfb0:4e52 with SMTP id ca18e2360f4ac-80006d99988mr10069739f.4.1720494739840; Mon, 08 Jul 2024 20:12:19 -0700 (PDT) Date: Mon, 08 Jul 2024 20:12:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ce6fdb061cc7e5b2@google.com> Subject: [syzbot] [batman?] BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet From: syzbot To: a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, mareklindner@neomailbox.ch, netdev@vger.kernel.org, pabeni@redhat.com, sven@narfation.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 795c58e4c7fc Merge tag 'trace-v6.10-rc6' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11bf7976980000 kernel config: https://syzkaller.appspot.com/x/.config?x=c950e46ec3ea637a dashboard link: https://syzkaller.appspot.com/bug?extid=572f6e36bc6ee6f16762 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/393fdf1d08dd/disk-795c58e4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/724001a1b4be/vmlinux-795c58e4.xz kernel image: https://storage.googleapis.com/syzbot-assets/1ede352392b0/bzImage-795c58e4.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+572f6e36bc6ee6f16762@syzkaller.appspotmail.com watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [kworker/u8:8:2833] Modules linked in: irq event stamp: 1708674 hardirqs last enabled at (1708673): [] ___slab_alloc+0x870/0x1870 mm/slub.c:3577 hardirqs last disabled at (1708674): [] sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (1708660): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (1708660): [] batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:661 [inline] softirqs last enabled at (1708660): [] batadv_iv_ogm_schedule_buff+0x97d/0x1500 net/batman-adv/bat_iv_ogm.c:833 softirqs last disabled at (1708658): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (1708658): [] batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:639 [inline] softirqs last disabled at (1708658): [] batadv_iv_ogm_schedule_buff+0x933/0x1500 net/batman-adv/bat_iv_ogm.c:833 CPU: 0 PID: 2833 Comm: kworker/u8:8 Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline] RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline] RIP: 0010:kfence_alloc include/linux/kfence.h:127 [inline] RIP: 0010:slab_alloc_node mm/slub.c:3986 [inline] RIP: 0010:kmem_cache_alloc_noprof+0x1bd/0x2f0 mm/slub.c:4009 Code: 5d 41 5e 41 5f 5d e9 2d aa 2e 09 31 c9 e9 71 ff ff ff 41 8b 44 24 08 a8 82 0f 84 5b ff ff ff a8 08 41 0f 45 de e9 50 ff ff ff <8b> 05 fd b8 f4 0b 85 c0 0f 85 c0 fe ff ff 4c 89 e7 44 89 f6 44 89 RSP: 0018:ffffc90009717840 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000002120 RCX: 0000000000000000 RDX: 1ffffffff1bace70 RSI: 0000000000000028 RDI: ffff88802ba3b3c4 RBP: ffffc90009717888 R08: 00000000ffffffff R09: ffff8880250de500 R10: 0000000000000000 R11: 0000000000000004 R12: ffff88801544f8c0 R13: 0000000000002120 R14: 0000000000000028 R15: 00000000250de500 FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f64bd0ce2d8 CR3: 000000006623e000 CR4: 0000000000350ef0 Call Trace: fill_pool+0x26b/0x5d0 lib/debugobjects.c:168 debug_objects_fill_pool lib/debugobjects.c:615 [inline] __debug_object_init+0xf7/0x480 lib/debugobjects.c:627 __init_work+0x4c/0x60 kernel/workqueue.c:678 batadv_iv_ogm_aggregate_new+0x2dd/0x4a0 net/batman-adv/bat_iv_ogm.c:584 batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:670 [inline] batadv_iv_ogm_schedule_buff+0x99b/0x1500 net/batman-adv/bat_iv_ogm.c:833 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline] batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline] batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712 process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3248 process_scheduled_works kernel/workqueue.c:3329 [inline] worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409 kthread+0x2c4/0x3a0 kernel/kthread.c:389 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:112 --- 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