INFO: task syz-executor.5:24727 blocked for more than 143 seconds. Not tainted 6.1.0-rc4-syzkaller-31872-g1621b6eaebf7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:0 pid:24727 ppid:3083 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 syz-executor.0:24755 blocked for more than 143 seconds. Not tainted 6.1.0-rc4-syzkaller-31872-g1621b6eaebf7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:24755 ppid:3072 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 syz-executor.0:24757 blocked for more than 143 seconds. Not tainted 6.1.0-rc4-syzkaller-31872-g1621b6eaebf7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:0 pid:24757 ppid:3072 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 syz-executor.2:24770 blocked for more than 143 seconds. Not tainted 6.1.0-rc4-syzkaller-31872-g1621b6eaebf7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:24770 ppid:3082 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 syz-executor.4:24773 blocked for more than 143 seconds. Not tainted 6.1.0-rc4-syzkaller-31872-g1621b6eaebf7 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:24773 ppid:3088 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 Showing all locks held in the system: 2 locks held by kworker/u4:0/9: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d3f3868 (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: ffff80000d3f3eb8 (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: ffff80000d3f3740 ( rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:303 2 locks held by getty/2708: #0: ffff0000c685a898 ( &tty->ldisc_sem ){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f5f62f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 1 lock held by syz-executor.5/24727: #0: ffff00011359b0e0 (&type->s_umount_key#78){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722 2 locks held by f2fs_ckpt-7:5/24708: 1 lock held by syz-executor.0/24755: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.0/24757: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.2/24770: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.4/24773: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.5/24873: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.5/24875: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.4/24890: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.2/24899: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.0/24902: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.5/24958: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.4/25001: #0: ffff00011359b0e0 ( &type->s_umount_key #78 ){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.2/25008: #0: ffff00011359b0e0 (&type->s_umount_key#78){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722 1 lock held by syz-executor.0/25014: #0: ffff00011359b0e0 (&type->s_umount_key#78){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:722 =============================================