INFO: task syz-executor.4:8826 blocked for more than 144 seconds. Not tainted 5.15.106-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack: 0 pid: 8826 ppid: 4101 flags:0x00000009 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xf10/0x1e38 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 io_schedule+0x8c/0x194 kernel/sched/core.c:8472 bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0xcc/0x1f0 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0x194/0x21c kernel/sched/wait_bit.c:117 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer fs/buffer.c:69 [inline] lock_buffer+0x108/0x174 include/linux/buffer_head.h:402 __sync_dirty_buffer+0x6c/0x350 fs/buffer.c:3144 sync_dirty_buffer+0x24/0x34 fs/buffer.c:3170 __ext4_handle_dirty_metadata+0x198/0x740 fs/ext4/ext4_jbd2.c:381 ext4_handle_dirty_dirblock+0x2d0/0x5c0 fs/ext4/namei.c:438 ext4_finish_convert_inline_dir+0x4e8/0x6c8 fs/ext4/inline.c:1188 ext4_convert_inline_data_nolock+0x5c4/0xc18 fs/ext4/inline.c:1265 ext4_try_add_inline_entry+0x954/0xdc4 fs/ext4/inline.c:1338 ext4_add_entry+0x554/0xf0c fs/ext4/namei.c:2384 ext4_mkdir+0x43c/0xa74 fs/ext4/namei.c:3006 vfs_mkdir+0x350/0x514 fs/namei.c:3994 do_mkdirat+0x20c/0x610 fs/namei.c:4019 __do_sys_mkdirat fs/namei.c:4034 [inline] __se_sys_mkdirat fs/namei.c:4032 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4032 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz-executor.4:8830 blocked for more than 144 seconds. Not tainted 5.15.106-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack: 0 pid: 8830 ppid: 4101 flags:0x00000001 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xf10/0x1e38 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6514 rwsem_down_read_slowpath+0x5b0/0x988 kernel/locking/rwsem.c:1047 __down_read_common+0x6c/0x2dc kernel/locking/rwsem.c:1231 __down_read kernel/locking/rwsem.c:1244 [inline] down_read+0xc8/0x11c kernel/locking/rwsem.c:1490 inode_lock_shared include/linux/fs.h:797 [inline] open_last_lookups fs/namei.c:3461 [inline] path_openat+0x62c/0x26f0 fs/namei.c:3669 do_filp_open+0x1a8/0x3b4 fs/namei.c:3699 do_sys_openat2+0x128/0x3d8 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1238 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff800014aa1660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268 1 lock held by udevd/3585: 2 locks held by getty/3736: #0: ffff0000d3175098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001a27b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1200 drivers/tty/n_tty.c:2147 2 locks held by kworker/u4:13/4641: 3 locks held by syz-executor.4/8826: #0: ffff0001216a2460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff000121aa8de8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #1: ffff000121aa8de8 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x200/0x464 fs/namei.c:3765 #2: ffff000121aa8ac0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline] #2: ffff000121aa8ac0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xdc/0xdc4 fs/ext4/inline.c:1296 2 locks held by syz-executor.4/8830: #0: ffff0001216a2460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff000121aa8de8 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #1: ffff000121aa8de8 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3461 [inline] #1: ffff000121aa8de8 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x62c/0x26f0 fs/namei.c:3669 2 locks held by syz-executor.2/10713: 1 lock held by syz-executor.0/10721: 2 locks held by syz-executor.3/10725: 4 locks held by syz-executor.1/10728: =============================================