INFO: task syz-executor.5:16734 blocked for more than 148 seconds. Not tainted 5.15.114-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack: 0 pid:16734 ppid: 4017 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 wait_on_state fs/btrfs/extent_io.c:868 [inline] wait_extent_bit+0x3e4/0x52c fs/btrfs/extent_io.c:906 lock_extent_bits+0x100/0x1d4 fs/btrfs/extent_io.c:1469 btrfs_page_mkwrite+0x66c/0xde8 fs/btrfs/inode.c:8898 do_page_mkwrite+0x144/0x37c mm/memory.c:2883 wp_page_shared+0x14c/0x398 mm/memory.c:3216 do_wp_page+0x7cc/0x9c4 mm/memory.c:3317 handle_pte_fault mm/memory.c:4626 [inline] __handle_mm_fault mm/memory.c:4743 [inline] handle_mm_fault+0x1ce4/0x33c4 mm/memory.c:4841 __do_page_fault arch/arm64/mm/fault.c:505 [inline] do_page_fault+0x700/0xb60 arch/arm64/mm/fault.c:605 do_mem_abort+0x70/0x1d8 arch/arm64/mm/fault.c:819 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:358 el1h_64_sync_handler+0x5c/0x98 arch/arm64/kernel/entry-common.c:409 el1h_64_sync+0x78/0x7c arch/arm64/kernel/entry.S:579 __arch_copy_to_user+0x88/0x218 arch/arm64/lib/copy_template.S:90 emit_fiemap_extent fs/btrfs/extent_io.c:5460 [inline] extent_fiemap+0xd84/0x10d4 fs/btrfs/extent_io.c:5686 btrfs_fiemap+0x100/0x150 fs/btrfs/inode.c:8521 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x1bcc/0x2a38 fs/ioctl.c:814 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860 __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: ffff800014aa19a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268 4 locks held by kworker/u4:2/148: 2 locks held by kworker/u4:3/298: 2 locks held by kworker/u4:4/393: 1 lock held by udevd/3584: 2 locks held by getty/3724: #0: ffff0000d2f08098 (&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 1 lock held by syz-executor.0/3996: 2 locks held by kworker/1:13/7953: #0: ffff0000c0021d38 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2280 #1: ffff80001d6e7c00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2282 3 locks held by syz-executor.5/16734: #0: ffff0000d1231818 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #0: ffff0000d1231818 (&mm->mmap_lock){++++}-{3:3}, at: do_page_fault+0x380/0xb60 arch/arm64/mm/fault.c:586 #1: ffff0000c7c9a558 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x144/0x37c mm/memory.c:2883 #2: ffff000129b80e68 (&ei->i_mmap_lock){.+.+}-{3:3}, at: btrfs_page_mkwrite+0x530/0xde8 fs/btrfs/inode.c:8887 2 locks held by syz-executor.2/29467: #0: ffff8000169b5c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffff8000169b5c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0xa2c/0xdac net/core/rtnetlink.c:5584 #1: ffff800014aa5f28 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x320/0x660 kernel/rcu/tree_exp.h:842 1 lock held by syz-executor.3/29478: #0: ffff8000169b5c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 3 locks held by syz-executor.5/29491: #0: ffff800016a13990 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:802 #1: ffff800016a13848 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffff800016a13848 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x114/0x1018 net/netlink/genetlink.c:790 #2: ffff8000169b5c08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 3 locks held by syz-executor.0/29595: =============================================