INFO: task kworker/0:14:4350 blocked for more than 143 seconds. Not tainted 5.15.187-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:14 state:D stack: 0 pid: 4350 ppid: 2 flags:0x00000008 Workqueue: events_long flush_old_commits Call trace: __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xe00/0x1c0c kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6518 __mutex_lock_common+0xa9c/0x1edc kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_sync_fs fs/reiserfs/super.c:76 [inline] flush_old_commits+0x194/0x29c fs/reiserfs/super.c:111 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457 kthread+0x374/0x454 kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:855 Showing all locks held in the system: 3 locks held by kworker/0:1/13: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001b337c00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff0000c987c240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1c8/0x2704 drivers/net/netdevsim/fib.c:1480 1 lock held by khungtaskd/27: #0: ffff800014351360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 3 locks held by kworker/u4:5/414: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001fa27c00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 1 lock held by dhcpcd/3707: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 2 locks held by getty/3815: #0: ffff0000d3e45098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001b8262e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158 2 locks held by kworker/0:7/4120: #0: ffff0000c0021938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001f8a7c00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 4 locks held by kworker/u4:10/4238: #0: ffff0000c038c138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001fde7c00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff8000162a1f10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x12c/0xa98 net/core/net_namespace.c:589 #3: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 4 locks held by kworker/0:14/4350: #0: ffff0000c0021138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001f987c00 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff0000cf0620e0 (&type->s_umount_key#74){++++}-{3:3}, at: flush_old_commits+0xc8/0x29c fs/reiserfs/super.c:97 #3: ffff0000c1cd6090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 3 locks held by kworker/0:15/4352: #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001f997c00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 3 locks held by syz.4.126/4697: 3 locks held by kworker/1:13/5968: #0: ffff0000d2ff9d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff800022167c00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 1 lock held by syz-executor/7191: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x98c/0xd04 net/core/rtnetlink.c:5647 1 lock held by syz.2.644/7206: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 1 lock held by syz.2.644/7249: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 2 locks held by syz.5.647/7244: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x98c/0xd04 net/core/rtnetlink.c:5647 #1: ffff800014355e28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #1: ffff800014355e28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2f0/0x5e0 kernel/rcu/tree_exp.h:845 1 lock held by syz.5.647/7245: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 1 lock held by syz.3.648/7255: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 1 lock held by syz.3.648/7258: #0: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 2 locks held by syz.3.648/7260: #0: ffff800016296348 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x600/0x87c net/socket.c:1219 #1: ffff8000162ad7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 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