INFO: task syz-executor.2:7950 blocked for more than 144 seconds. Not tainted 6.3.0-rc5-syzkaller-g9a03cbd79d3a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:7950 ppid:6033 flags:0x00000009 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5307 [inline] __schedule+0x1048/0x1e38 kernel/sched/core.c:6625 schedule+0xc4/0x170 kernel/sched/core.c:6701 io_schedule+0x8c/0x120 kernel/sched/core.c:8887 bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0xcc/0x1e8 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:70 [inline] lock_buffer+0xf8/0x14c include/linux/buffer_head.h:400 __sync_dirty_buffer+0x6c/0x300 fs/buffer.c:2780 sync_dirty_buffer+0x24/0x34 fs/buffer.c:2806 __ext4_handle_dirty_metadata+0x188/0x714 fs/ext4/ext4_jbd2.c:387 ext4_convert_inline_data_nolock+0x66c/0xbc4 fs/ext4/inline.c:1254 ext4_convert_inline_data+0x38c/0x50c fs/ext4/inline.c:2065 ext4_fallocate+0x124/0x1c88 fs/ext4/extents.c:4701 vfs_fallocate+0x478/0x5b4 fs/open.c:324 ioctl_preallocate+0x278/0x324 fs/ioctl.c:290 do_vfs_ioctl+0x1ad8/0x26f8 fs/ioctl.c:849 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015e5f250 (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: ffff800015e5fa50 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 3 locks held by kworker/1:0/22: #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363 #1: ffff80001a577c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2365 #2: ffff00014a275240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 1 lock held by khungtaskd/28: #0: ffff800015e5f080 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 2 locks held by kworker/u4:2/39: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363 #1: ffff0001b428bd88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3c0/0x618 kernel/sched/psi.c:976 2 locks held by getty/5669: #0: ffff0000d3677098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001aaf02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 2 locks held by kworker/0:6/6094: #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363 #1: ffff80001ee47c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2365 2 locks held by kworker/u4:14/6860: 3 locks held by syz-executor.2/7950: #0: ffff0000ea7d8460 (sb_writers#3){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2505 [inline] #0: ffff0000ea7d8460 (sb_writers#3){.+.+}-{0:0}, at: vfs_fallocate+0x404/0x5b4 fs/open.c:323 #1: ffff0000ddd7e850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff0000ddd7e850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x11c/0x1c88 fs/ext4/extents.c:4700 #2: ffff0000ddd7e518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline] #2: ffff0000ddd7e518 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x2dc/0x50c fs/ext4/inline.c:2063 3 locks held by syz-executor.2/9353: #0: ffff000131ccee10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #0: ffff000131ccee10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline] #0: ffff000131ccee10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x80/0x1fc net/socket.c:1395 #1: ffff8000184d7cb0 ((netlink_chain).rwsem){++++}-{3:3}, at: blocking_notifier_call_chain+0x60/0x198 kernel/notifier.c:381 #2: ffff0000d2aed0a8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nft_rcv_nl_event+0x108/0x4c4 net/netfilter/nf_tables_api.c:10275 2 locks held by syz-executor.0/9372: #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x700/0xdb8 net/core/rtnetlink.c:6171 #1: ffff800015e644f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #1: ffff800015e644f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x37c/0x728 kernel/rcu/tree_exp.h:989 1 lock held by syz-executor.3/9385: #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x700/0xdb8 net/core/rtnetlink.c:6171 1 lock held by syz-executor.1/9386: #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x700/0xdb8 net/core/rtnetlink.c:6171 2 locks held by syz-executor.4/9392: #0: ffff00012f5e1a10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #0: ffff00012f5e1a10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline] #0: ffff00012f5e1a10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x80/0x1fc net/socket.c:1395 #1: ffff800015e644f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #1: ffff800015e644f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x37c/0x728 kernel/rcu/tree_exp.h:989 1 lock held by syz-executor.4/9400: #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffff80001847dbc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x700/0xdb8 net/core/rtnetlink.c:6171 =============================================