INFO: task syz.4.479:8390 blocked for more than 143 seconds. Not tainted 6.14.0-rc6-syzkaller-ga5618886fdab #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.479 state:D stack:0 pid:8390 tgid:8384 ppid:6440 task_flags:0x400140 flags:0x00000001 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5378 [inline] __schedule+0x1360/0x257c kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6857 d_wait_lookup+0x1a0/0x27c fs/dcache.c:2494 d_alloc_parallel+0x9fc/0x11bc fs/dcache.c:2576 lookup_open fs/namei.c:3573 [inline] open_last_lookups fs/namei.c:3750 [inline] path_openat+0x788/0x2b1c fs/namei.c:3986 do_filp_open+0x1e8/0x404 fs/namei.c:4016 do_sys_openat2+0x124/0x1b8 fs/open.c:1428 do_sys_open fs/open.c:1443 [inline] __do_sys_openat fs/open.c:1459 [inline] __se_sys_openat fs/open.c:1454 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1454 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/32: #0: ffff80008fda2620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 2 locks held by getty/6199: #0: ffff0000d2cca0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009bcae2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz-executor/7848: #0: ffff0000f55a20e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000f55a20e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000f55a20e0 (&type->s_umount_key#54){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff80008fda7a00 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x58/0x534 kernel/rcu/tree.c:3741 2 locks held by syz.4.479/8385: 2 locks held by syz.4.479/8388: 1 lock held by syz.4.479/8390: #0: ffff0000fe170180 (&type->i_mutex_dir_key#17){.+.+}-{4:4}, at: inode_lock_shared include/linux/fs.h:887 [inline] #0: ffff0000fe170180 (&type->i_mutex_dir_key#17){.+.+}-{4:4}, at: open_last_lookups fs/namei.c:3749 [inline] #0: ffff0000fe170180 (&type->i_mutex_dir_key#17){.+.+}-{4:4}, at: path_openat+0x674/0x2b1c fs/namei.c:3986 3 locks held by syz-executor/8696: 1 lock held by syz.3.1002/10595: 1 lock held by syz.2.1013/10629: #0: ffff0000f2885c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline] #0: ffff0000f2885c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:646 [inline] #0: ffff0000f2885c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x80/0x1e8 net/socket.c:1398 =============================================