INFO: task syz-executor.2:4860 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid: 4860 ppid: 3062 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 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:1651 sync_fs_one_sb+0x64/0x90 fs/sync.c:84 iterate_supers+0xc0/0x150 fs/super.c:723 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:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 INFO: task syz-executor.2:4889 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid: 4889 ppid: 3062 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 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:1651 sync_fs_one_sb+0x64/0x90 fs/sync.c:84 iterate_supers+0xc0/0x150 fs/super.c:723 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:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 INFO: task syz-executor.1:4878 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid: 4878 ppid: 3066 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 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:1651 sync_fs_one_sb+0x64/0x90 fs/sync.c:84 iterate_supers+0xc0/0x150 fs/super.c:723 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:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 INFO: task syz-executor.1:4888 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid: 4888 ppid: 3066 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 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:1651 sync_fs_one_sb+0x64/0x90 fs/sync.c:84 iterate_supers+0xc0/0x150 fs/super.c:723 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:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 INFO: task syz-executor.1:4904 blocked for more than 143 seconds. Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid: 4904 ppid: 3066 flags:0x00000009 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557 context_switch kernel/sched/core.c:5182 [inline] __schedule+0x414/0x5a0 kernel/sched/core.c:6494 schedule+0x64/0xa4 kernel/sched/core.c:6570 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:1651 sync_fs_one_sb+0x64/0x90 fs/sync.c:84 iterate_supers+0xc0/0x150 fs/super.c:723 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:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d433568 ( 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: ffff80000d433bb8 ( 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: ffff80000d433440 ( rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279 2 locks held by getty/2714: #0: ffff0000c732f898 ( &tty->ldisc_sem ){++++}-{0:0} , at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f6162f0 ( &ldata->atomic_read_lock ){+.+.}-{3:3} , at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 1 lock held by syz-executor.2/4860: #0: ffff000114ec20e0 (&type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.2/4889: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.1/4878: #0: ffff000114ec20e0 ( &type->s_umount_key #77){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.1/4888: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.1/4904: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 3 locks held by f2fs_ckpt-7:2/4865: 1 lock held by syz-executor.1/4978: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.1/4981: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.1/4982: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.2/4985: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.2/4986: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 1 lock held by syz-executor.3/5544: #0: ffff000114ec20e0 ( &type->s_umount_key #77 ){++++}-{3:3} , at: iterate_supers+0x7c/0x150 fs/super.c:721 =============================================