INFO: task syz-executor.3:5190 blocked for more than 143 seconds. Not tainted 6.10.0-rc1-syzkaller-00027-g4a4be1ad3a6e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:26328 pid:5190 tgid:5188 ppid:5116 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x1796/0x49d0 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178 __down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306 inode_lock include/linux/fs.h:791 [inline] vfs_rmdir+0x101/0x510 fs/namei.c:4203 do_rmdir+0x3b5/0x580 fs/namei.c:4273 __do_sys_rmdir fs/namei.c:4292 [inline] __se_sys_rmdir fs/namei.c:4290 [inline] __x64_sys_rmdir+0x49/0x60 fs/namei.c:4290 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2e14a7cee9 RSP: 002b:00007f2e145de0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007f2e14bb4070 RCX: 00007f2e14a7cee9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f2e14ac947f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f2e14bb4070 R15: 00007ffc058a4508 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 2 locks held by getty/4838: #0: ffff88802a69e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201 2 locks held by syz-fuzzer/5084: 3 locks held by syz-executor.3/5190: #0: ffff88807b928420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409 #1: ffff8880608982b8 (&sb->s_type->i_mutex_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline] #1: ffff8880608982b8 (&sb->s_type->i_mutex_key#20/1){+.+.}-{3:3}, at: do_rmdir+0x263/0x580 fs/namei.c:4261 #2: ffff8880608982b8 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline] #2: ffff8880608982b8 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: vfs_rmdir+0x101/0x510 fs/namei.c:4203 3 locks held by syz-executor.4/5737: #0: ffff8880117e6420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409 #1: ffff888060a3a360 (&sb->s_type->i_mutex_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:826 [inline] #1: ffff888060a3a360 (&sb->s_type->i_mutex_key#20/1){+.+.}-{3:3}, at: do_rmdir+0x263/0x580 fs/namei.c:4261