INFO: task syz-executor.5:9809 blocked for more than 143 seconds. Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:0 pid:9809 ppid:6004 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5304 [inline] __schedule+0x1130/0x1fd0 kernel/sched/core.c:6622 schedule+0xc4/0x170 kernel/sched/core.c:6698 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6757 rwsem_down_write_slowpath+0xcb8/0x146c kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0xc0/0xcc kernel/locking/rwsem.c:1574 inode_lock include/linux/fs.h:758 [inline] do_truncate+0x1ac/0x28c fs/open.c:64 handle_truncate fs/namei.c:3219 [inline] do_open fs/namei.c:3564 [inline] path_openat+0x2148/0x2810 fs/namei.c:3715 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1375 __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 INFO: task syz-executor.5:9831 blocked for more than 143 seconds. Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:0 pid:9831 ppid:6004 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5304 [inline] __schedule+0x1130/0x1fd0 kernel/sched/core.c:6622 schedule+0xc4/0x170 kernel/sched/core.c:6698 io_schedule+0x8c/0x120 kernel/sched/core.c:8884 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:1255 ext4_convert_inline_data+0x38c/0x50c fs/ext4/inline.c:2066 ext4_fallocate+0x124/0x2130 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: ffff800015eb7c90 (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: ffff800015eb8490 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffff800015eb7ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 2 locks held by getty/5629: #0: ffff0000d3385098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001a9e02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 4 locks held by kworker/1:9/6063: #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2363 #1: ffff80001ebd7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2365 #2: ffff800018397088 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:75 #3: ffff800015ebcf38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #3: ffff800015ebcf38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ac/0x728 kernel/rcu/tree_exp.h:989 2 locks held by kworker/u4:7/6111: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2363 #1: ffff80001ec87c20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2365 2 locks held by kworker/1:15/6563: #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2363 #1: ffff800021487c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2365 3 locks held by kworker/u4:16/8120: #0: ffff0000d6741938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 kernel/workqueue.c:2363 #1: ffff8000222b7c20 ((work_completion)(&ifibss->csa_connection_drop_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 kernel/workqueue.c:2365 #2: ffff0000d66e8d40 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1115 [inline] #2: ffff0000d66e8d40 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_csa_connection_drop_work+0x30/0x8c net/mac80211/ibss.c:737 2 locks held by syz-executor.5/9809: #0: ffff00013296a460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:394 #1: ffff000133875e48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff000133875e48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:64 3 locks held by syz-executor.5/9831: #0: ffff00013296a460 (sb_writers#3){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2505 [inline] #0: ffff00013296a460 (sb_writers#3){.+.+}-{0:0}, at: vfs_fallocate+0x404/0x5b4 fs/open.c:323 #1: ffff000133875e48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff000133875e48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x11c/0x2130 fs/ext4/extents.c:4700 #2: ffff000133875b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline] #2: ffff000133875b10 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x2dc/0x50c fs/ext4/inline.c:2064 3 locks held by syz-executor.3/13822: =============================================