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 AB1BFC4332F for ; Thu, 20 Oct 2022 06:16:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230083AbiJTGQz (ORCPT ); Thu, 20 Oct 2022 02:16:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34686 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230059AbiJTGQv (ORCPT ); Thu, 20 Oct 2022 02:16:51 -0400 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D9B7183E24 for ; Wed, 19 Oct 2022 23:16:49 -0700 (PDT) Received: by mail-io1-f71.google.com with SMTP id 75-20020a6b144e000000b006bbed69b669so15958378iou.21 for ; Wed, 19 Oct 2022 23:16:49 -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=0vv0g5Hf0bDXF9rf4LbrVovhSHtbDdHpYzUlhBOmk0E=; b=eCtnSTsR/x1lfLmD4QcZw3UyT2Q3wETahHvO1oqadmeb5jyLjWKVEsEdpmw1TSMDsg qgLFzLGE81nEHZHKi7XAuH62j4/930s8iCkxoqRXlhysN1nxYR5VwnDLVhovYut9us4N yMIdfsaLAbgc4PL8TW3V0OTFmzIAZq80afYHY5oxvvP+XeLBvAGT7iBB0nr4v4KDDBeh aa9GTs+uULbsDilMA0j0Ineees7DcdT0U41x/UIUIl/07ZYm7BtNvjkInRTiK41bBzIK htA0ag5OKSM/tWyl1A2J4u3XwUkblBTlnPIPS/AJDeglI5T8svrekvJxYBbG3K/4zKlO WDLA== X-Gm-Message-State: ACrzQf10IKWeqrXxjHzlU+VQ6NfIXUkbLLVhHzjYF+2g2heXa8kdWK2q 6sWMNWzF7v7EPhiq866aVQavo7R1/pHtCxlNFO9OeNldxXKi X-Google-Smtp-Source: AMsMyM6j+9TtjoaJUYpUPpYNDY1++MYiTnFj3C5I807Q44YlHw+HnHfvSqp9XSY1w8SbWLIyswQgte5lJkbg3tF+TKXCBKDLrP+i MIME-Version: 1.0 X-Received: by 2002:a05:6e02:170b:b0:2fc:59ab:bcd2 with SMTP id u11-20020a056e02170b00b002fc59abbcd2mr8701132ill.74.1666246608396; Wed, 19 Oct 2022 23:16:48 -0700 (PDT) Date: Wed, 19 Oct 2022 23:16:48 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000033a7b505eb714534@google.com> Subject: [syzbot] INFO: task hung in __gfs2_trans_begin From: syzbot To: agruenba@redhat.com, cluster-devel@redhat.com, linux-kernel@vger.kernel.org, rpeterso@redhat.com, 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: 493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13aa22ba880000 kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901 dashboard link: https://syzkaller.appspot.com/bug?extid=a159cc6676345e04ff7d compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15fbd70c880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14dceee2880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f1ff6481e26f/disk-493ffd66.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/101bd3c7ae47/vmlinux-493ffd66.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/510833e7acb6/mount_1.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a159cc6676345e04ff7d@syzkaller.appspotmail.com INFO: task syz-executor714:3609 blocked for more than 143 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor714 state:D stack:23256 pid: 3609 ppid: 3606 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1087 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252 __gfs2_trans_begin+0x4e4/0x8c0 fs/gfs2/trans.c:87 gfs2_trans_begin+0x6d/0xe0 fs/gfs2/trans.c:118 gfs2_write_jdata_pagevec+0x100/0xe20 fs/gfs2/aops.c:220 gfs2_write_cache_jdata+0x46d/0x7b0 fs/gfs2/aops.c:349 gfs2_jdata_writepages+0x81/0x150 fs/gfs2/aops.c:391 do_writepages+0x3c3/0x680 mm/page-writeback.c:2469 filemap_fdatawrite_wbc+0x11e/0x170 mm/filemap.c:388 gfs2_ail1_start_one fs/gfs2/log.c:134 [inline] gfs2_ail1_flush+0xbc3/0xeb0 fs/gfs2/log.c:214 gfs2_ail1_start fs/gfs2/log.c:245 [inline] empty_ail1_list+0x17f/0x260 fs/gfs2/log.c:977 gfs2_log_flush+0x212a/0x26a0 fs/gfs2/log.c:1122 gfs2_kill_sb+0x50/0xd0 fs/gfs2/ops_fstype.c:1725 deactivate_locked_super+0xa7/0xf0 fs/super.c:331 cleanup_mnt+0x4ce/0x560 fs/namespace.c:1186 task_work_run+0x146/0x1c0 kernel/task_work.c:177 ptrace_notify+0x29a/0x340 kernel/signal.c:2354 ptrace_report_syscall include/linux/ptrace.h:420 [inline] ptrace_report_syscall_exit include/linux/ptrace.h:482 [inline] syscall_exit_work+0x8c/0xe0 kernel/entry/common.c:249 syscall_exit_to_user_mode_prepare+0x63/0xc0 kernel/entry/common.c:276 __syscall_exit_to_user_mode_work kernel/entry/common.c:281 [inline] syscall_exit_to_user_mode+0xa/0x60 kernel/entry/common.c:294 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8dc1bc527 RSP: 002b:00007fff602f2de8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc8dc1bc527 RDX: 00007fff602f2ea9 RSI: 000000000000000a RDI: 00007fff602f2ea0 RBP: 00007fff602f2ea0 R08: 00000000ffffffff R09: 00007fff602f2c80 R10: 000055555558c653 R11: 0000000000000206 R12: 00007fff602f3f10 R13: 000055555558c5f0 R14: 00007fff602f2e10 R15: 0000000000000005 INFO: task gfs2_logd:3658 blocked for more than 143 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:gfs2_logd state:D stack:29592 pid: 3658 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_write_slowpath+0xf1c/0x1350 kernel/locking/rwsem.c:1182 __down_write_common kernel/locking/rwsem.c:1297 [inline] __down_write kernel/locking/rwsem.c:1306 [inline] down_write+0x163/0x170 kernel/locking/rwsem.c:1553 gfs2_log_flush+0xe7/0x26a0 fs/gfs2/log.c:1034 gfs2_logd+0x41f/0xe50 fs/gfs2/log.c:1319 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task gfs2_quotad:3659 blocked for more than 144 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:gfs2_quotad state:D stack:27576 pid: 3659 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1087 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252 __gfs2_trans_begin+0x4e4/0x8c0 fs/gfs2/trans.c:87 gfs2_trans_begin+0x6d/0xe0 fs/gfs2/trans.c:118 gfs2_statfs_sync+0x37f/0x4c0 fs/gfs2/super.c:294 quotad_check_timeo fs/gfs2/quota.c:1512 [inline] gfs2_quotad+0x485/0xb20 fs/gfs2/quota.c:1554 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task syz-executor714:3660 blocked for more than 144 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor714 state:D stack:27064 pid: 3660 ppid: 3608 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1087 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252 iterate_supers+0xb0/0x1f0 fs/super.c:721 ksys_sync+0xd5/0x1c0 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+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8dc1bb189 RSP: 002b:00007fff602f3ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 000000000000e657 RCX: 00007fc8dc1bb189 RDX: 00007fc8dc1baba7 RSI: 0000000000000004 RDI: 00007fc8dc1ff074 RBP: 0000000000000000 R08: 00007fff602f3950 R09: 00007fff602f3f00 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff602f3efc R13: 00007fff602f3f30 R14: 00007fff602f3f10 R15: 0000000000000005 INFO: task syz-executor714:3661 blocked for more than 144 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor714 state:D stack:27288 pid: 3661 ppid: 3610 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1087 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252 iterate_supers+0xb0/0x1f0 fs/super.c:721 ksys_sync+0xb7/0x1c0 fs/sync.c:102 __do_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8dc1bb189 RSP: 002b:00007fff602f3ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 000000000000e326 RCX: 00007fc8dc1bb189 RDX: 00007fc8dc1baba7 RSI: 0000000000000004 RDI: 00007fc8dc1ff074 RBP: 0000000000000000 R08: 00007fff602f3950 R09: 00007fff602f3f00 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff602f3efc R13: 00007fff602f3f30 R14: 00007fff602f3f10 R15: 0000000000000005 INFO: task syz-executor714:3662 blocked for more than 144 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor714 state:D stack:28088 pid: 3662 ppid: 3612 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1087 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252 iterate_supers+0xb0/0x1f0 fs/super.c:721 ksys_sync+0xb7/0x1c0 fs/sync.c:102 __do_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8dc1bb189 RSP: 002b:00007fff602f3ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 000000000000e34d RCX: 00007fc8dc1bb189 RDX: 00007fc8dc1baba7 RSI: 0000000000000004 RDI: 00007fc8dc1ff074 RBP: 0000000000000000 R08: 00007fff602f3950 R09: 00007fff602f3f00 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff602f3efc R13: 00007fff602f3f30 R14: 00007fff602f3f10 R15: 0000000000000005 INFO: task syz-executor714:3663 blocked for more than 144 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor714 state:D stack:28088 pid: 3663 ppid: 3607 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1087 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252 iterate_supers+0xb0/0x1f0 fs/super.c:721 ksys_sync+0xb7/0x1c0 fs/sync.c:102 __do_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8dc1bb189 RSP: 002b:00007fff602f3ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 000000000000e673 RCX: 00007fc8dc1bb189 RDX: 00007fc8dc1baba7 RSI: 0000000000000004 RDI: 00007fc8dc1ff074 RBP: 0000000000000000 R08: 00007fff602f3950 R09: 00007fff602f3f00 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff602f3efc R13: 00007fff602f3f30 R14: 00007fff602f3f10 R15: 0000000000000005 INFO: task syz-executor714:3664 blocked for more than 145 seconds. Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor714 state:D stack:28088 pid: 3664 ppid: 3611 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5183 [inline] __schedule+0x91f/0xdf0 kernel/sched/core.c:6495 schedule+0xcb/0x190 kernel/sched/core.c:6571 rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1087 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252 iterate_supers+0xb0/0x1f0 fs/super.c:721 ksys_sync+0xb7/0x1c0 fs/sync.c:102 __do_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8dc1bb189 RSP: 002b:00007fff602f3ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 000000000000e62e RCX: 00007fc8dc1bb189 RDX: 00007fc8dc1baba7 RSI: 0000000000000004 RDI: 00007fc8dc1ff074 RBP: 0000000000000000 R08: 00007fff602f3950 R09: 00007fff602f3f00 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff602f3efc R13: 00007fff602f3f30 R14: 00007fff602f3f10 R15: 0000000000000005 INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 nmi_cpu_backtrace+0x425/0x450 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x169/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xcd5/0xd20 kernel/hung_task.c:369 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1081 Comm: kworker/u4:5 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:__sanitizer_cov_trace_switch+0x0/0x100 kernel/kcov.c:310 Code: 48 83 c8 08 48 c7 04 01 07 00 00 00 48 89 d0 48 83 c8 10 48 89 3c 01 48 83 ca 18 48 89 34 11 4e 89 44 c9 20 c3 0f 1f 44 00 00 <41> 57 41 56 53 48 8b 46 08 48 83 c0 f8 48 c1 c0 3d 48 83 f8 07 0f RSP: 0018:ffffc9000515f810 EFLAGS: 00000246 RAX: 1ffff92000a2bf00 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff8880200fd880 RSI: ffffffff8d1c1900 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffffffff846979e0 R09: ffffc9000515f960 R10: fffff52000a2bf37 R11: 1ffff92000a2bf2c R12: ffffc9000515f960 R13: 0000000000000044 R14: 1ffff92000a2bf39 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c30a147990 CR3: 000000000c88e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: insn_get_displacement+0x33b/0x9a0 arch/x86/lib/insn.c:490 insn_get_immediate+0x427/0x12e0 arch/x86/lib/insn.c:632 insn_get_length arch/x86/lib/insn.c:707 [inline] insn_decode+0x3b0/0x550 arch/x86/lib/insn.c:747 text_poke_loc_init+0xb3/0x500 arch/x86/kernel/alternative.c:1590 arch_jump_label_transform_queue+0x70/0xd0 arch/x86/kernel/jump_label.c:138 __jump_label_update+0x19b/0x3b0 kernel/jump_label.c:447 static_key_disable_cpuslocked+0xc8/0x1b0 kernel/jump_label.c:207 static_key_disable+0x16/0x20 kernel/jump_label.c:215 toggle_allocation_gate+0x3b8/0x450 mm/kfence/core.c:825 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches