INFO: task syz.4.22:6440 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-g8a03d70c27fc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.22 state:D stack:0 pid:6440 tgid:6439 ppid:6288 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: 1 lock held by khungtaskd/31: #0: ffff80008f387a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 3 locks held by kworker/u8:4/146: #0: ffff0000d1f09948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff800097f87c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 4 locks held by udevd/5898: #0: ffff0000d90fe418 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xac/0xc44 fs/seq_file.c:182 #1: ffff0000eb8bdc88 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x58/0x384 fs/kernfs/file.c:154 #2: ffff0000d2514a58 (kn->active#4){.+.+}-{0:0}, at: kernfs_seq_start+0x74/0x384 fs/kernfs/file.c:155 #3: ffff0000eb51a0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #3: ffff0000eb51a0e8 (&dev->mutex){....}-{3:3}, at: uevent_show+0x17c/0x33c drivers/base/core.c:2743 1 lock held by dhcpcd/5952: #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632 2 locks held by getty/6044: #0: ffff0000d27840a0 (&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 3 locks held by kworker/1:6/6344: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff80009b8c7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 5 locks held by kworker/u8:8/6415: #0: ffff0000c1819948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff800098e57c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff800091fb2710 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594 #3: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #4: ffff0000e8f31408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_netns_pre_exit+0xbc/0x1d4 drivers/net/wireguard/device.c:419 2 locks held by syz.4.22/6440: #0: ffff0000ccf89748 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ec8fb3c0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.1.70/6981: #0: ffff0000d9e46fc8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000df8eb3c0 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 2 locks held by syz.3.103/7171: #0: ffff0000da304348 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191 #1: ffff0000ec8fcf80 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: wrap_directory_iterator+0x64/0xf4 fs/readdir.c:56 3 locks held by kworker/u8:11/7353: 7 locks held by syz-executor/9083: #0: ffff0000d860a420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline] #0: ffff0000d860a420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x368/0xc78 fs/read_write.c:586 #1: ffff0000e10c3488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325 #2: ffff0000cbfa44b8 (kn->active#46){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1e4/0x48c fs/kernfs/file.c:326 #3: ffff800091192de8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x170/0x704 drivers/net/netdevsim/bus.c:166 #4: ffff0000eb51a0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #4: ffff0000eb51a0e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x90/0x434 drivers/base/dd.c:1003 #5: ffff0000eb519250 (&devlink->lock_key#16){+.+.}-{3:3}, at: devl_lock+0x24/0x34 net/devlink/core.c:276 #6: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz-executor/9130: #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632 1 lock held by syz-executor/9179: #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632 1 lock held by syz-executor/9196: #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632 2 locks held by syz-executor/9245: #0: ffff800091fb2710 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x3b4/0x654 net/core/net_namespace.c:504 #1: ffff800091fbe968 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 =============================================