syzbot

INFO: task jfsCommit:93 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:0     pid:93    ppid:2      flags:0x00000008
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562
 schedule+0xc4/0x170 kernel/sched/core.c:6638
 io_schedule+0x84/0x154 kernel/sched/core.c:8798
 __lock_metapage+0x180/0x418 fs/jfs/jfs_metapage.c:50
 lock_metapage fs/jfs/jfs_metapage.c:64 [inline]
 __get_metapage+0x900/0xfac fs/jfs/jfs_metapage.c:639
 diIAGRead+0xe4/0x14c fs/jfs/jfs_imap.c:2672
 diFree+0x6f4/0x1e00 fs/jfs/jfs_imap.c:959
 jfs_evict_inode+0x2c4/0x3e4 fs/jfs/inode.c:162
 evict+0x3e0/0x828 fs/inode.c:705
 iput_final fs/inode.c:1834 [inline]
 iput+0x754/0x7e4 fs/inode.c:1860
 txUpdateMap+0x674/0x794 fs/jfs/jfs_txnmgr.c:2368
 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
 jfs_lazycommit+0x354/0x908 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
INFO: task jfsCommit:94 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:0     pid:94    ppid:2      flags:0x00000008
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562
 schedule+0xc4/0x170 kernel/sched/core.c:6638
 io_schedule+0x84/0x154 kernel/sched/core.c:8798
 __lock_metapage+0x180/0x418 fs/jfs/jfs_metapage.c:50
 lock_metapage fs/jfs/jfs_metapage.c:64 [inline]
 __get_metapage+0x900/0xfac fs/jfs/jfs_metapage.c:639
 diIAGRead+0xe4/0x14c fs/jfs/jfs_imap.c:2672
 diFree+0x6f4/0x1e00 fs/jfs/jfs_imap.c:959
 jfs_evict_inode+0x2c4/0x3e4 fs/jfs/inode.c:162
 evict+0x3e0/0x828 fs/inode.c:705
 iput_final fs/inode.c:1834 [inline]
 iput+0x754/0x7e4 fs/inode.c:1860
 txUpdateMap+0x674/0x794 fs/jfs/jfs_txnmgr.c:2368
 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
 jfs_lazycommit+0x354/0x908 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
INFO: task syz-executor:4627 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:4627  ppid:1      flags:0x0000000c
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562
 schedule+0xc4/0x170 kernel/sched/core.c:6638
 jfs_flush_journal+0x57c/0xd14 fs/jfs/jfs_logmgr.c:1564
 jfs_sync_fs+0x80/0xac fs/jfs/super.c:684
 sync_filesystem+0x1a0/0x218 fs/sync.c:66
 generic_shutdown_super+0x70/0x324 fs/super.c:474
 kill_block_super+0x70/0xdc fs/super.c:1470
 deactivate_locked_super+0xac/0x120 fs/super.c:332
 deactivate_super+0xe4/0x104 fs/super.c:363
 cleanup_mnt+0x390/0x418 fs/namespace.c:1191
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198
 task_work_run+0x1ec/0x278 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0x550/0x19b0 kernel/exit.c:880
 do_group_exit+0x194/0x22c kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __wake_up_parent+0x0/0x60 kernel/exit.c:1031
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff8000153f7c30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
 #0: ffff8000153f8450 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
 #0: ffff8000153f72c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
2 locks held by jfsCommit/93:
 #0: ffff0000da5b8920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x244/0x1e00 fs/jfs/jfs_imap.c:889
 #1: ffff0000e235a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x258/0x1e00 fs/jfs/jfs_imap.c:894
2 locks held by jfsCommit/94:
 #0: ffff0000d6a90920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x244/0x1e00 fs/jfs/jfs_imap.c:889
 #1: ffff0000ea752638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x258/0x1e00 fs/jfs/jfs_imap.c:894
2 locks held by getty/4076:
 #0: ffff0000d71ce098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80002096b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xfa0 drivers/tty/n_tty.c:2198
3 locks held by kworker/1:3/4393:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6b8/0x13a4 kernel/workqueue.c:2265
 #1: ffff800021207c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6fc/0x13a4 kernel/workqueue.c:2267
 #2: ffff0000db6d2240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1d0/0x27cc drivers/net/netdevsim/fib.c:1491
1 lock held by dhcpcd/4542:
 #0: ffff0000e2371410 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
 #0: ffff0000e2371410 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: __sock_release net/socket.c:653 [inline]
 #0: ffff0000e2371410 (&sb->s_type->i_mutex_key#12){+.+.}-{3:3}, at: sock_close+0x7c/0x1f8 net/socket.c:1399
1 lock held by syz-executor/4627:
 #0: ffff0000e028c0e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
1 lock held by syz-executor/4901:
 #0: ffff0000cccf00e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
1 lock held by syz-executor/5177:
 #0: ffff0000d86860e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
2 locks held by syz-executor/5456:
 #0: ffff0000d43e40e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
 #1: ffff8000157df1e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz-executor/5752:
 #0: ffff0000f017a0e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
2 locks held by syz-executor/6053:
 #0: ffff0000db6600e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
 #1: ffff8000157df1e8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz-executor/6349:
 #0: ffff0000dca580e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
1 lock held by syz-executor/6646:
 #0: ffff0000ead100e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
1 lock held by syz-executor/6952:
 #0: ffff0000f30220e0 (&type->s_umount_key#51){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
1 lock held by dhcpcd-run-hook/7608:
 #0: ffff00019f566198 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:538 [inline]
 #0: ffff00019f566198 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1362 [inline]
 #0: ffff00019f566198 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1652 [inline]
 #0: ffff00019f566198 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2b8/0x1b0c kernel/sched/core.c:6478

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