INFO: task kworker/u4:7:472 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:7 state:D stack:0 pid:472 ppid:2 flags:0x00000008 Workqueue: btrfs-endio-write btrfs_work_helper Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 wait_on_state fs/btrfs/extent-io-tree.c:719 [inline] wait_extent_bit+0x4cc/0x620 fs/btrfs/extent-io-tree.c:763 lock_extent+0x18c/0x230 fs/btrfs/extent-io-tree.c:1755 btrfs_finish_one_ordered+0x51c/0x16f8 fs/btrfs/inode.c:3080 btrfs_finish_ordered_io+0xf8/0x10c fs/btrfs/inode.c:3229 finish_ordered_fn+0x20/0xa8 fs/btrfs/ordered-data.c:303 btrfs_work_helper+0x340/0x1504 fs/btrfs/async-thread.c:314 process_one_work+0x694/0x1204 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2784 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 INFO: task kworker/u4:16:7352 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:16 state:D stack:0 pid:7352 ppid:2 flags:0x00000008 Workqueue: btrfs-endio-write btrfs_work_helper Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 wait_on_state fs/btrfs/extent-io-tree.c:719 [inline] wait_extent_bit+0x4cc/0x620 fs/btrfs/extent-io-tree.c:763 lock_extent+0x18c/0x230 fs/btrfs/extent-io-tree.c:1755 btrfs_finish_one_ordered+0x51c/0x16f8 fs/btrfs/inode.c:3080 btrfs_finish_ordered_io+0xf8/0x10c fs/btrfs/inode.c:3229 finish_ordered_fn+0x20/0xa8 fs/btrfs/ordered-data.c:303 btrfs_work_helper+0x340/0x1504 fs/btrfs/async-thread.c:314 process_one_work+0x694/0x1204 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2784 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 INFO: task kworker/u4:21:7357 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:21 state:D stack:0 pid:7357 ppid:2 flags:0x00000008 Workqueue: btrfs-endio-write btrfs_work_helper Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 wait_on_state fs/btrfs/extent-io-tree.c:719 [inline] wait_extent_bit+0x4cc/0x620 fs/btrfs/extent-io-tree.c:763 lock_extent+0x18c/0x230 fs/btrfs/extent-io-tree.c:1755 btrfs_finish_one_ordered+0x51c/0x16f8 fs/btrfs/inode.c:3080 btrfs_finish_ordered_io+0xf8/0x10c fs/btrfs/inode.c:3229 finish_ordered_fn+0x20/0xa8 fs/btrfs/ordered-data.c:303 btrfs_work_helper+0x340/0x1504 fs/btrfs/async-thread.c:314 process_one_work+0x694/0x1204 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2784 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 INFO: task kworker/u4:29:7482 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:29 state:D stack:0 pid:7482 ppid:2 flags:0x00000008 Workqueue: btrfs-delalloc btrfs_work_helper Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 wait_on_state fs/btrfs/extent-io-tree.c:719 [inline] wait_extent_bit+0x4cc/0x620 fs/btrfs/extent-io-tree.c:763 lock_extent+0x18c/0x230 fs/btrfs/extent-io-tree.c:1755 submit_one_async_extent fs/btrfs/inode.c:1124 [inline] submit_compressed_extents+0x3b0/0x11c4 fs/btrfs/inode.c:1585 run_ordered_work fs/btrfs/async-thread.c:245 [inline] btrfs_work_helper+0x4e8/0x1504 fs/btrfs/async-thread.c:324 process_one_work+0x694/0x1204 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2784 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 INFO: task syz-executor.3:12718 blocked for more than 143 seconds. Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:12718 ppid:6129 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5382 [inline] __schedule+0x1364/0x23b4 kernel/sched/core.c:6695 schedule+0xc4/0x170 kernel/sched/core.c:6771 wait_on_state fs/btrfs/extent-io-tree.c:719 [inline] wait_extent_bit+0x4cc/0x620 fs/btrfs/extent-io-tree.c:763 lock_extent+0x18c/0x230 fs/btrfs/extent-io-tree.c:1755 btrfs_page_mkwrite+0x62c/0xcbc fs/btrfs/inode.c:8143 do_page_mkwrite+0x140/0x2dc mm/memory.c:2931 wp_page_shared mm/memory.c:3291 [inline] do_wp_page+0xb6c/0x2f4c mm/memory.c:3376 handle_pte_fault mm/memory.c:4994 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x11b0/0x49fc mm/memory.c:5284 __do_page_fault arch/arm64/mm/fault.c:513 [inline] do_page_fault+0x4e8/0xa54 arch/arm64/mm/fault.c:626 do_mem_abort+0x74/0x200 arch/arm64/mm/fault.c:846 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:398 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:458 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:590 __arch_copy_to_user+0x88/0x234 arch/arm64/lib/copy_template.S:90 emit_fiemap_extent+0x1f8/0x388 fs/btrfs/extent_io.c:2472 extent_fiemap+0xce8/0x1a44 fs/btrfs/extent_io.c:2962 btrfs_fiemap+0x154/0x1c0 fs/btrfs/inode.c:7815 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1958/0x2704 fs/ioctl.c:811 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:857 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffff80008e513840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302 3 locks held by kworker/u4:7/472: #0: ffff0000c764e938 ((wq_completion)btrfs-endio-write#26){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603 #1: ffff800097ac7c20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605 #2: ffff0000ce7c2498 (btrfs_ordered_extent){++++}-{0:0}, at: btrfs_finish_one_ordered+0x274/0x16f8 fs/btrfs/inode.c:3039 2 locks held by getty/5854: #0: ffff0000d26b50a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094c202f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2206 3 locks held by kworker/u4:16/7352: #0: ffff0000c764e938 ((wq_completion)btrfs-endio-write#26){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603 #1: ffff8000978f7c20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605 #2: ffff0000ce7c2498 (btrfs_ordered_extent){++++}-{0:0}, at: btrfs_finish_one_ordered+0x274/0x16f8 fs/btrfs/inode.c:3039 3 locks held by kworker/u4:21/7357: #0: ffff0000c764e938 ((wq_completion)btrfs-endio-write#26){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603 #1: ffff800097927c20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605 #2: ffff0000ce7c2498 (btrfs_ordered_extent){++++}-{0:0}, at: btrfs_finish_one_ordered+0x274/0x16f8 fs/btrfs/inode.c:3039 2 locks held by kworker/u4:29/7482: #0: ffff0000d3537d38 ((wq_completion)btrfs-delalloc#26){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603 #1: ffff800097f07c20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605 3 locks held by kworker/u4:33/7487: #0: ffff0000c1c0e538 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2603 #1: ffff800097f67c20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2605 #2: ffff0000db0060e0 (&type->s_umount_key#62){++++}-{3:3}, at: super_trylock_shared+0x28/0xe4 fs/super.c:607 4 locks held by syz-executor.3/12718: #0: ffff000122430ee0 (&sb->s_type->i_mutex_key#27){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline] #0: ffff000122430ee0 (&sb->s_type->i_mutex_key#27){++++}-{3:3}, at: btrfs_inode_lock+0x68/0xe0 fs/btrfs/inode.c:369 #1: ffff0000d882f990 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline] #1: ffff0000d882f990 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5311 [inline] #1: ffff0000d882f990 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x38/0x2d8 mm/memory.c:5371 #2: ffff0000db006508 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x140/0x2dc mm/memory.c:2931 #3: ffff000122430d68 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x4d4/0xcbc fs/btrfs/inode.c:8132 2 locks held by syz-executor.4/15387: #0: ffff0000db0060e0 (&type->s_umount_key#62){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff0000db0060e0 (&type->s_umount_key#62){++++}-{3:3}, at: super_lock+0x160/0x328 fs/super.c:117 #1: ffff0000ca1227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline] #1: ffff0000ca1227d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x208/0x944 fs/fs-writeback.c:2739 =============================================