INFO: task syz-executor.2:26461 blocked for more than 143 seconds.
Not tainted 6.9.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27408 pid:26461 tgid:26404 ppid:25400 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1796/0x4a00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
xfs_ail_push_all_sync+0x236/0x310 fs/xfs/xfs_trans_ail.c:742
xfs_log_quiesce+0xe0/0x690 fs/xfs/xfs_log.c:1070
xfs_log_clean+0xa4/0xc40 fs/xfs/xfs_log.c:1082
xfs_remount_ro fs/xfs/xfs_super.c:1891 [inline]
xfs_fs_reconfigure+0x7d2/0x960 fs/xfs/xfs_super.c:1947
reconfigure_super+0x445/0x880 fs/super.c:1071
vfs_cmd_reconfigure fs/fsopen.c:267 [inline]
vfs_fsconfig_locked fs/fsopen.c:296 [inline]
__do_sys_fsconfig fs/fsopen.c:476 [inline]
__se_sys_fsconfig+0xab5/0xec0 fs/fsopen.c:349
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf2967dca9
RSP: 002b:00007fcf2a2fc0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007fcf297ac050 RCX: 00007fcf2967dca9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007fcf296c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fcf297ac050 R15: 00007ffc1c39d4d8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/1:1/44:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc90000b47d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc90000b47d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
4 locks held by kworker/u8:3/50:
2 locks held by getty/4835:
#0: ffff88807c9500a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/u9:1/12423:
#0: ffff88807e4e5148 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff88807e4e5148 ((wq_completion)hci3){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc9000929fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc9000929fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffff88805e8ad060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:309
2 locks held by kworker/u8:4/25256:
5 locks held by kworker/u8:7/25301:
#0: ffff888015ecb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015ecb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc90009bc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc90009bc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f587b50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:591
#3: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11626
#4: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#4: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
2 locks held by syz-executor.2/26461:
#0: ffff88802da3e470 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:474 [inline]
#0: ffff88802da3e470 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x8e6/0xec0 fs/fsopen.c:349
#1: ffff8880821980e0 (&type->s_umount_key#62){++++}-{3:3}, at: vfs_cmd_reconfigure fs/fsopen.c:266 [inline]
#1: ffff8880821980e0 (&type->s_umount_key#62){++++}-{3:3}, at: vfs_fsconfig_locked fs/fsopen.c:296 [inline]
#1: ffff8880821980e0 (&type->s_umount_key#62){++++}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:476 [inline]
#1: ffff8880821980e0 (&type->s_umount_key#62){++++}-{3:3}, at: __se_sys_fsconfig+0xaab/0xec0 fs/fsopen.c:349
1 lock held by syz-executor.2/27463:
#0: ffff8880821980e0 (&type->s_umount_key#62){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880821980e0 (&type->s_umount_key#62){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor.1/28699:
#0: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.2/28736:
#0: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3110
1 lock held by syz-executor.2/28737:
#0: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1096
1 lock held by syz-executor.4/28742:
#0: ffffffff8e33a000 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x550 kernel/rcu/tree.c:4073
1 lock held by syz-executor.0/28749:
#0: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f594248 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/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
CPU: 1 PID: 28751 Comm: syz-executor.3 Not tainted 6.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0033:0x7f7770c39ab4
Code: ee e8 40 fa ff ff 4c 39 eb 74 3b 0f 1f 00 49 8b 4d 00 49 8b 55 f8 49 8d 45 f8 48 39 d1 0f 83 e5 00 00 00 0f 1f 00 48 89 50 08 <48> 89 c6 48 8b 50 f8 48 83 e8 08 48 39 d1 72 ec 49 83 c5 08 48 89
RSP: 002b:00007ffd14f99720 EFLAGS: 00000297
RAX: 00007f777052e338 RBX: 00007f777055b428 RCX: ffffffff8233d3ce
RDX: ffffffff8233d46f RSI: 00007f777052e340 RDI: 00007f7770401008
RBP: 00007f7770401008 R08: 00007f7770401070 R09: 0000000000000892
R10: 000000008136afde R11: 0000000000000246 R12: 0000001b2f82001c
R13: 00007f777052e368 R14: 00007f7770da0000 R15: 00007f7770dac018
FS: 00005555860a6480 GS: 0000000000000000