INFO: task syz.8.855:10817 blocked for more than 143 seconds. Not tainted 6.14.0-rc5-syzkaller-g77c95b8c7a16 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.8.855 state:D stack:0 pid:10817 tgid:10817 ppid:8626 task_flags:0x400040 flags:0x00000005 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5378 [inline] __schedule+0x1360/0x257c kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6857 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6914 rwsem_down_write_slowpath+0xd10/0x14c8 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:877 [inline] fuse_flush+0x234/0x7d4 fs/fuse/file.c:535 filp_flush+0xb4/0x18c fs/open.c:1540 filp_close+0x28/0x48 fs/open.c:1553 __range_close fs/file.c:746 [inline] __do_sys_close_range fs/file.c:805 [inline] __se_sys_close_range fs/file.c:769 [inline] __arm64_sys_close_range+0x300/0x634 fs/file.c:769 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 INFO: task syz.8.855:10824 blocked for more than 143 seconds. Not tainted 6.14.0-rc5-syzkaller-g77c95b8c7a16 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.8.855 state:D stack:0 pid:10824 tgid:10817 ppid:8626 task_flags:0x400040 flags:0x00000009 Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5378 [inline] __schedule+0x1360/0x257c kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6857 fuse_set_nowrite+0x1a8/0x2d4 fs/fuse/dir.c:1829 fuse_sync_writes fs/fuse/file.c:512 [inline] fuse_fsync+0x138/0x2c4 fs/fuse/file.c:614 vfs_fsync_range+0x160/0x19c fs/sync.c:187 generic_write_sync include/linux/fs.h:2970 [inline] generic_file_write_iter+0x28c/0x4b4 mm/filemap.c:4320 fuse_cache_write_iter fs/fuse/file.c:1466 [inline] fuse_file_write_iter+0x978/0xb7c fs/fuse/file.c:1807 do_iter_readv_writev+0x558/0x7d8 vfs_writev+0x2dc/0x92c fs/read_write.c:1050 do_writev+0x178/0x304 fs/read_write.c:1096 __do_sys_writev fs/read_write.c:1164 [inline] __se_sys_writev fs/read_write.c:1161 [inline] __arm64_sys_writev+0x80/0x94 fs/read_write.c:1161 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 4 locks held by kworker/u8:1/13: 1 lock held by khungtaskd/31: #0: ffff80008fda22e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 2 locks held by dhcpcd/6114: #0: ffff0000d5d586c8 (nlk_cb_mutex-ROUTE){+.+.}-{4:4}, at: __netlink_dump_start+0xf8/0x720 net/netlink/af_netlink.c:2387 #1: ffff800092b71f68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #1: ffff800092b71f68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dumpit+0x8c/0x1d0 net/core/rtnetlink.c:6780 2 locks held by getty/6205: #0: ffff0000d2cb70a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009bcdb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:4/6527: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff8000a1917ba0 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800092e4c828 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_global_led_trigger_worker+0x30/0xe4 net/rfkill/core.c:182 3 locks held by kworker/u8:22/8612: #0: ffff0000d2588148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009dcf7ba0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800092b71f68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syz.8.855/10817: #0: ffff0000f3990148 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline] #0: ffff0000f3990148 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: fuse_flush+0x234/0x7d4 fs/fuse/file.c:535 3 locks held by syz.8.855/10824: #0: ffff0000de815278 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x220/0x2ac fs/file.c:1192 #1: ffff0000f94de420 (sb_writers#18){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3035 [inline] (sb_writers#18){.+.+}-{0:0}, at: vfs_writev+0x24c/0x92c fs/read_write.c:1048 #2: ffff0000f3990148 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline] #2: ffff0000f3990148 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: fuse_fsync+0xf8/0x2c4 fs/fuse/file.c:603 1 lock held by syz-executor/12995: #0: ffff800092b71f68 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by syz.0.1254/13480: #0: ffff800092e4c828 (rfkill_global_mutex){+.+.}-{4:4}, at: rfkill_fop_write+0x290/0x778 net/rfkill/core.c:1293 #1: ffff800092b71f68 ( rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #2: ffff0000d4010768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6061 [inline] #2: ffff0000d4010768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_netdev_notifier_call+0x3ec/0x1260 net/wireless/core.c:1539 1 lock held by syz.6.1265/13560: 2 locks held by dhcpcd/13579: #0: ffff0000f1010258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1624 [inline] #0: ffff0000f1010258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x4c/0xb2c net/packet/af_packet.c:3253 #1: ffff80008fda77f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline] #1: ffff80008fda77f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x324/0x674 kernel/rcu/tree_exp.h:996 1 lock held by syz.4.1270/13581: =============================================