INFO: task syz-executor.0:5205 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:5205 ppid:3108 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5191 [inline] __schedule+0x408/0x594 kernel/sched/core.c:6503 schedule+0x64/0xa4 kernel/sched/core.c:6579 schedule_timeout+0x64/0x1b4 kernel/time/timer.c:1911 do_wait_for_common+0xf4/0x184 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 f2fs_issue_checkpoint+0x158/0x244 f2fs_sync_fs+0x8c/0xc8 fs/f2fs/super.c:1656 sync_fs_one_sb+0x64/0x90 fs/sync.c:84 iterate_supers+0xc0/0x150 fs/super.c:724 ksys_sync+0x64/0xc8 fs/sync.c:104 __arm64_sys_sync+0x14/0x24 fs/sync.c:113 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 INFO: task f2fs_ckpt-7:0:5196 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:f2fs_ckpt-7:0 state:D stack:0 pid:5196 ppid:2 flags:0x00000008 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5191 [inline] __schedule+0x408/0x594 kernel/sched/core.c:6503 schedule+0x64/0xa4 kernel/sched/core.c:6579 rwsem_down_write_slowpath+0x258/0x468 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x84/0x88 kernel/locking/rwsem.c:1563 f2fs_down_write fs/f2fs/f2fs.h:2205 [inline] __write_checkpoint_sync fs/f2fs/checkpoint.c:1766 [inline] __checkpoint_and_complete_reqs+0x90/0x290 fs/f2fs/checkpoint.c:1786 issue_checkpoint_thread+0x5c/0x17c fs/f2fs/checkpoint.c:1817 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d4d4768 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d4d4db8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d4d4640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:303 2 locks held by getty/2760: #0: ffff0000c7bf3898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 3 locks held by kworker/u4:10/4189: 3 locks held by syz-executor.0/5174: 1 lock held by syz-executor.0/5205: #0: ffff00011145a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by f2fs_ckpt-7:0/5196: #0: ffff000112297140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2205 [inline] #0: ffff000112297140 (&sbi->gc_lock){+.+.}-{3:3}, at: __write_checkpoint_sync fs/f2fs/checkpoint.c:1766 [inline] #0: ffff000112297140 (&sbi->gc_lock){+.+.}-{3:3}, at: __checkpoint_and_complete_reqs+0x90/0x290 fs/f2fs/checkpoint.c:1786 1 lock held by syz-executor.0/5277: #0: ffff00011145a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.2/7277: =============================================