INFO: task syz.1.75:6811 blocked for more than 145 seconds. Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.75 state:D stack:0 pid:6811 tgid:6810 ppid:6526 task_flags:0x400140 flags:0x00000019 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5397 [inline] __schedule+0x141c/0x2a14 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6879 io_schedule+0x84/0xf0 kernel/sched/core.c:7724 xfs_buf_wait_unpin+0x164/0x2bc fs/xfs/xfs_buf.c:1025 xfs_buf_submit+0x1e0/0xa5c fs/xfs/xfs_buf.c:1454 xfs_buf_delwri_submit+0x254/0x414 fs/xfs/xfs_buf.c:2057 xfs_qm_quotacheck+0x390/0x648 fs/xfs/xfs_qm.c:1583 xfs_qm_mount_quotas+0x1f0/0x598 fs/xfs/xfs_qm.c:1692 xfs_mountfs+0x1554/0x1c04 fs/xfs/xfs_mount.c:1186 xfs_fs_fill_super+0xe74/0x11f0 fs/xfs/xfs_super.c:1965 get_tree_bdev_flags+0x360/0x414 fs/super.c:1681 get_tree_bdev+0x2c/0x3c fs/super.c:1704 xfs_fs_get_tree+0x28/0x38 fs/xfs/xfs_super.c:2012 vfs_get_tree+0x90/0x28c fs/super.c:1804 do_new_mount+0x228/0x814 fs/namespace.c:3902 path_mount+0x5b4/0xde0 fs/namespace.c:4226 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount fs/namespace.c:4427 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4427 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by kthreadd/2: 2 locks held by kworker/0:0/9: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/14: 1 lock held by khungtaskd/32: #0: ffff80008f869980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 3 locks held by kworker/u8:4/238: 3 locks held by kworker/u8:5/273: 3 locks held by kworker/u8:6/298: 3 locks held by kworker/u8:7/511: 2 locks held by kworker/1:2/1826: 3 locks held by kworker/u8:8/2118: 3 locks held by kworker/u8:9/3888: 3 locks held by kworker/R-ipv6_/4173: #0: ffff0000d23fc148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a08e7ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 4 locks held by kworker/R-bat_e/4254: 1 lock held by klogd/6131: 2 locks held by udevd/6142: 1 lock held by dhcpcd/6196: 1 lock held by dhcpcd/6197: 1 lock held by crond/6271: 4 locks held by kworker/0:3/6280: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a1b67bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000d5850768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline] #3: ffff0000d5850768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 2 locks held by getty/6296: #0: ffff0000d78a00a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba302f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 1 lock held by udevd/6520: 2 locks held by syz-executor/6527: 3 locks held by syz-executor/6532: 1 lock held by syz-executor/6536: 3 locks held by syz-executor/6538: 4 locks held by udevd/6736: 1 lock held by syz.1.75/6811: #0: ffff0000d285a0e0 (&type->s_umount_key#67/1){+.+.}-{4:4}, at: alloc_super+0x1a0/0x80c fs/super.c:345 2 locks held by kworker/u8:10/6844: 3 locks held by syz-executor/6847: =============================================