INFO: task can't die in pipe

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task can't die in pipe_release ext4	syz		1	1642d	1638d	0/28	closed as dup on 2020/08/07 10:37
upstream	INFO: task hung in pipe_release (5) fs			160	26d	136d	0/28	moderation: reported on 2024/09/14 11:01
linux-6.1	INFO: task hung in pipe_release			2	94d	153d	0/3	upstream: reported on 2024/08/28 18:21
upstream	INFO: task hung in pipe_release (4) fs	C	done	51	566d	566d	23/28	fixed on 2023/10/12 12:48
upstream	INFO: task hung in pipe_release (3) fs			4	1169d	1283d	0/28	closed as invalid on 2022/02/07 19:19
linux-4.19	INFO: task hung in pipe_release			1	1405d	1405d	0/1	auto-closed as invalid on 2021/07/23 11:59
linux-5.15	INFO: task hung in pipe_release			2	101d	163d	0/3	auto-obsoleted due to no activity on 2025/01/27 06:00

INFO: task syz-executor.4:16676 can't die for more than 147 seconds. task:syz-executor.4 state:D stack:29048 pid:16676 ppid: 8473 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4326 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5077 schedule+0xcf/0x270 kernel/sched/core.c:5156 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5215 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103 __pipe_lock fs/pipe.c:87 [inline] pipe_release+0x49/0x320 fs/pipe.c:703 __fput+0x283/0x920 fs/file_table.c:280 task_work_run+0xdd/0x190 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x417b71 RSP: 002b:00007ffc01d8d550 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000417b71 RDX: 0000001b2ca20000 RSI: ffffffff8903e45e RDI: 0000000000000003 RBP: 0000000000000001 R08: ffffffff8132e020 R09: 000000009ef3fe36 R10: 00007ffc01d8d630 R11: 0000000000000293 R12: 000000000119ca00 R13: 000000000119ca00 R14: 00000000000003e8 R15: 000000000119c0dc INFO: task syz-executor.4:16676 blocked for more than 151 seconds. Not tainted 5.11.0-rc5-next-20210128-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29048 pid:16676 ppid: 8473 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4326 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5077 schedule+0xcf/0x270 kernel/sched/core.c:5156 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5215 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103 __pipe_lock fs/pipe.c:87 [inline] pipe_release+0x49/0x320 fs/pipe.c:703 __fput+0x283/0x920 fs/file_table.c:280 task_work_run+0xdd/0x190 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x417b71 RSP: 002b:00007ffc01d8d550 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000417b71 RDX: 0000001b2ca20000 RSI: ffffffff8903e45e RDI: 0000000000000003 RBP: 0000000000000001 R08: ffffffff8132e020 R09: 000000009ef3fe36 R10: 00007ffc01d8d630 R11: 0000000000000293 R12: 000000000119ca00 R13: 000000000119ca00 R14: 00000000000003e8 R15: 000000000119c0dc