INFO: task syz.3.21:6432 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-gfdd6064ff31c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.21 state:D stack:0 pid:6432 tgid:6431 ppid:6283 flags:0x00000009 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+0x4b8/0x640 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 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 INFO: task syz.0.104:6788 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-gfdd6064ff31c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.104 state:D stack:0 pid:6788 tgid:6787 ppid:6282 flags:0x00000009 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+0x4b8/0x640 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 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: 2 locks held by kworker/u8:0/11: 1 lock held by khungtaskd/31: #0: ffff80008f387960 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 3 locks held by kworker/u8:5/258: 4 locks held by kworker/u8:7/285: #0: ffff0000c1819948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff800098787c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff800091fb2610 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594 #3: ffff80008f38cb80 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x58/0x534 kernel/rcu/tree.c:4448 2 locks held by getty/6043: #0: ffff0000cc5250a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800097f9b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 2 locks held by syz.3.21/6432: #0: ffff0000d5d480c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ebe21800 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.0.104/6788: #0: ffff0000cef37c48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ebe258c0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.1.639/9298: #0: ffff0000d64560c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000fe470ec0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.4.702/9594: #0: ffff0000ea39f9c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000dbda8580 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.2.872/10494: #0: ffff0000d643a348 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ebd4eb40 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.4.887/10518: =============================================