INFO: task syz-executor.0:12424 blocked for more than 143 seconds. Not tainted 5.15.108-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid:12424 ppid: 4106 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_convert_inline_data_nolock+0x680/0xc18 fs/ext4/inline.c:1262 ext4_convert_inline_data+0x390/0x53c fs/ext4/inline.c:2045 ext4_fallocate+0x12c/0x1d1c fs/ext4/extents.c:4707 vfs_fallocate+0x478/0x5b4 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __arm64_sys_fallocate+0xc0/0x110 fs/open.c:337 __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 2 locks held by getty/3732: #0: ffff0000d286c098 (&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/0:5/4146: #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2279 #1: ffff80001d4b7c00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2281 3 locks held by kworker/u4:24/5083: 1 lock held by syz-executor.2/6311: #0: ffff800014aa5be8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #0: ffff800014aa5be8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x320/0x660 kernel/rcu/tree_exp.h:840 3 locks held by syz-executor.0/12424: #0: ffff000124a76460 (sb_writers#3){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2966 [inline] #0: ffff000124a76460 (sb_writers#3){.+.+}-{0:0}, at: vfs_fallocate+0x404/0x5b4 fs/open.c:307 #1: ffff0001231df198 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff0001231df198 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: ext4_fallocate+0x124/0x1d1c fs/ext4/extents.c:4706 #2: ffff0001231dee70 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline] #2: ffff0001231dee70 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x2dc/0x53c fs/ext4/inline.c:2043 3 locks held by syz-executor.3/13791: #0: ffff0000d5326460 (sb_writers#3){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2966 [inline] #0: ffff0000d5326460 (sb_writers#3){.+.+}-{0:0}, at: vfs_fallocate+0x404/0x5b4 fs/open.c:307 #1: ffff0001212bdda8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff0001212bdda8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: ext4_fallocate+0x124/0x1d1c fs/ext4/extents.c:4706 #2: ffff0001212bda80 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline] #2: ffff0001212bda80 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x2dc/0x53c fs/ext4/inline.c:2043 2 locks held by syz-executor.5/14538: #0: ffff0001213d44d0 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0001213d44d0 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1675 #1: ffff0001213d4938 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd4/0x11c fs/fuse/inode.c:436 1 lock held by syz-executor.5/14556: #0: ffff0001213d44d0 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0001213d44d0 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1675 2 locks held by syz-executor.1/14559: #0: ffff0001213d7410 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline] #0: ffff0001213d7410 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1675 #1: ffff0001213d7878 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd4/0x11c fs/fuse/inode.c:436 =============================================