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 D1414FA3740 for ; Mon, 31 Oct 2022 11:54:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230340AbiJaLyG (ORCPT ); Mon, 31 Oct 2022 07:54:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51904 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231177AbiJaLxy (ORCPT ); Mon, 31 Oct 2022 07:53:54 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA025D6E for ; Mon, 31 Oct 2022 04:53:53 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id i11-20020a056e02152b00b003007c106191so8735348ilu.9 for ; Mon, 31 Oct 2022 04:53:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=yAFMAvxlxMoFnG+XfsZSIIGrHwoTQNmkec9dxETMnqg=; b=jDmjiZFaVcNpQHtdm6ea/p5ZsWJUmlBbf1QPMDM5rX3RAyLlPGVqguKpnZWBU0lHak bHLYm/Ex3kvaNCpPLBX6hcQIJ+n4cZguBacrAblgBg0WY6xvW5JE7Gib6yEQKShrhuN1 lws8LGVdKTMnhykltYnJgWdyJAjiGmVStkvQ5IOdlc99GJXWmicfx3kcKDhYQaFUROsd k9PjArC+he9a9kd2+DfQqhLJVJDcJ0rLwiUxcpjtsAyCx8xoEpvz10oNwdlyjPPeNZLS sNJsVAQbZDb9RJ0xZn9i+CGmhVRClxJD4wy2BHbB7APR+y2uy2g2OGrWDAyAizL7Hkob wJeA== X-Gm-Message-State: ACrzQf2ihNmgedYLpPPeMpc3iYnagu9xL2duitla95HnFQ3ybdhVVvtd ExfFi++m/XnBdRCBtVJZQrJzF+ofllnA+TCWhlirxhRiSf8j X-Google-Smtp-Source: AMsMyM49tlFv28uXTo2fsgxAWnme+TK3gmDlYPlvAU8F9RaO83DOKQFXKH4yBGTt1MQ8KgsG/zYIpHxg7WUn5vIjASQhNFhXbu3C MIME-Version: 1.0 X-Received: by 2002:a05:6638:3795:b0:375:cca:7024 with SMTP id w21-20020a056638379500b003750cca7024mr7142594jal.103.1667217233315; Mon, 31 Oct 2022 04:53:53 -0700 (PDT) Date: Mon, 31 Oct 2022 04:53:53 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f48ffe05ec534218@google.com> Subject: [syzbot] INFO: task hung in f2fs_issue_checkpoint From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.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: b229b6ca5abb Merge tag 'perf-tools-fixes-for-v6.1-2022-10-.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=133b675a880000 kernel config: https://syzkaller.appspot.com/x/.config?x=a66c6c673fb555e8 dashboard link: https://syzkaller.appspot.com/bug?extid=8c1c6ffb39e290968f8d compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ba5b49fa77de/disk-b229b6ca.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7c061f2ae4dc/vmlinux-b229b6ca.xz kernel image: https://storage.googleapis.com/syzbot-assets/bc45c1300e9b/bzImage-b229b6ca.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8c1c6ffb39e290968f8d@syzkaller.appspotmail.com INFO: task syz-executor.0:4475 blocked for more than 143 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27384 pid:4475 ppid:3641 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ca/0x5c0 kernel/sched/completion.c:106 f2fs_issue_checkpoint+0x358/0x460 fs/f2fs/checkpoint.c:1882 f2fs_sync_fs+0x240/0x4c0 fs/f2fs/super.c:1656 sync_fs_one_sb fs/sync.c:84 [inline] sync_fs_one_sb+0x107/0x140 fs/sync.c:80 iterate_supers+0x13c/0x290 fs/super.c:723 ksys_sync+0xa8/0x150 fs/sync.c:104 __do_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc11668b5a9 RSP: 002b:00007fc1173be168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007fc1167abf80 RCX: 00007fc11668b5a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fc1166e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5b7e66ff R14: 00007fc1173be300 R15: 0000000000022000 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc71/0xfc0 kernel/hung_task.c:377 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Workqueue: phy10 ieee80211_iface_work RIP: 0010:_compound_head include/linux/page-flags.h:255 [inline] RIP: 0010:virt_to_folio include/linux/mm.h:892 [inline] RIP: 0010:kfree+0x61/0x1a0 mm/slab_common.c:999 Code: 0f 86 33 01 00 00 4c 89 e7 e8 ab 13 86 ff 48 bf 00 00 00 00 00 ea ff ff 48 c1 e8 0c 48 89 c5 48 c1 e5 06 48 01 fd 48 8b 45 08 01 0f 85 19 01 00 00 66 90 48 89 ef e8 ad f2 ff ff 48 8b 00 f6 RSP: 0018:ffffc900000e7960 EFLAGS: 00000282 RAX: ffffea000073f401 RBX: ffff8880888af874 RCX: 0000000000000000 RDX: ffff888011a50000 RSI: ffffffff8136c4f4 RDI: ffffea0000000000 RBP: ffffea000073f480 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000008c07e R12: ffff88801cfd2800 R13: 0000000000000028 R14: ffff88801d0b0de0 R15: ffff88801cfd2800 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f110a37f1b8 CR3: 000000002118d000 CR4: 0000000000350ef0 Call Trace: ieee80211_bss_info_update+0x49e/0xaf0 net/mac80211/scan.c:223 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x1a31/0x3190 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline] ieee80211_iface_work+0xa47/0xd30 net/mac80211/iface.c:1684 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 --- 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.