INFO: task syz-executor.3:22982 blocked for more than 143 seconds. Not tainted 6.1.21-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:22982 ppid:4363 flags:0x0000000d Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5238 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6551 schedule+0xc4/0x170 kernel/sched/core.c:6627 coredump_task_exit+0x278/0x394 kernel/exit.c:432 do_exit+0x1b8/0x1a88 kernel/exit.c:819 do_group_exit+0x194/0x22c kernel/exit.c:1019 get_signal+0x14a0/0x158c kernel/signal.c:2858 do_signal arch/arm64/kernel/signal.c:1076 [inline] do_notify_resume+0x3ac/0x3470 arch/arm64/kernel/signal.c:1129 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 INFO: task syz-executor.3:22989 blocked for more than 143 seconds. Not tainted 6.1.21-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:22989 ppid:4363 flags:0x00000009 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5238 [inline] __schedule+0xee4/0x1c98 kernel/sched/core.c:6551 schedule+0xc4/0x170 kernel/sched/core.c:6627 coredump_task_exit+0x278/0x394 kernel/exit.c:432 do_exit+0x1b8/0x1a88 kernel/exit.c:819 do_group_exit+0x194/0x22c kernel/exit.c:1019 get_signal+0x14a0/0x158c kernel/signal.c:2858 do_signal arch/arm64/kernel/signal.c:1076 [inline] do_notify_resume+0x3ac/0x3470 arch/arm64/kernel/signal.c:1129 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 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/12: #0: ffff800015754a30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffff800015755230 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffff800015754860 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:305 1 lock held by udevd/3839: 2 locks held by getty/3988: #0: ffff0000d4087098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001ca002f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 3 locks held by syz-executor.5/4346: 2 locks held by kworker/u4:9/8982: 4 locks held by kworker/u4:16/9277: #0: ffff0000c0e3d938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2262 #1: ffff800020dc7c20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2264 #2: ffff000121af40e0 (&type->s_umount_key#66){++++}-{3:3}, at: trylock_super+0x28/0xf8 fs/super.c:415 #3: ffff000120601140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2207 [inline] #3: ffff000120601140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x40c/0x60c fs/f2fs/segment.c:418 2 locks held by syz-executor.3/22981: 1 lock held by udevd/23026: 2 locks held by syz-executor.3/24740: 1 lock held by syz-executor.4/24745: 1 lock held by syz-executor.0/24743: 4 locks held by syz-executor.2/24748: =============================================