INFO: task syz.1.12:6535 blocked for more than 143 seconds. Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.12 state:D stack:0 pid:6535 tgid:6512 ppid:6382 flags:0x00000001 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 io_schedule+0x8c/0x124 kernel/sched/core.c:9043 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1307 __folio_lock+0x2c/0x3c mm/filemap.c:1645 lock_page include/linux/pagemap.h:1081 [inline] release_metapage+0x168/0xc4c fs/jfs/jfs_metapage.c:764 discard_metapage fs/jfs/jfs_metapage.h:88 [inline] __get_metapage+0xb10/0x1054 fs/jfs/jfs_metapage.c:644 jfs_readdir+0x1ed4/0x37bc fs/jfs/jfs_dtree.c:3018 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540 iterate_dir+0x408/0x648 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c0/0x404 fs/readdir.c:394 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008f4b7be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 2 locks held by kworker/u8:6/366: 2 locks held by getty/6141: #0: ffff0000d71d90a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff8000980ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz.1.12/6535: #0: ffff0000d9f31c48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ef5833c0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.3.160/7209: #0: ffff0000cef08848 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ef7c8580 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.2.200/7360: #0: ffff0000d541cac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ef7ccf80 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.0.202/7368: #0: ffff0000ce87e5c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ddf1eb40 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.4.274/7940: #0: ffff0000d5bc6848 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ddf1aa80 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 1 lock held by syz.3.651/9046: 1 lock held by syz.1.657/9066: =============================================